DOWNLOAD PDF Land Rover 5.0 V8 ENGINE MANAGEMENT SYSTEM ON-BOARD DIAGNOSTICS Manual

ON-BOARD DIAGNOSTICS 5.0 V8 ENGINE MANAGEMENT SYSTEM

Vehicle Coverage: Landrover LR4 2010 MY Range Rover 2010 MY Range Rover Sport 2010 MY

Land Rover

Revision Date: November 2010

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1

Contents

1 2

Contents.....................................................................................................................................................................................................2 Introduction.................................................................................................................................................................................................6 2.1 Inputs and Outputs .....................................................................................................................................................................................6 2.2 Generic OBD-II Drive Cycle ........................................................................................................................................................................9 3 Inspection and Maintenance Test Readiness Setting for Vehicles Land Rover Test Group ALRXT05.0001 ...............................................10 3.1 Introduction...............................................................................................................................................................................................10 3.2 Readiness Setting.....................................................................................................................................................................................10 4 Communication of Monitor Test Results - Mode$06 ..................................................................................................................................12 5 Onboard Monitoring ..................................................................................................................................................................................16 5.1 Catalyst Monitoring ...................................................................................................................................................................................16 5.1.1 Description ...............................................................................................................................................................................................16 5.1.2 Monitoring Structure .................................................................................................................................................................................17 5.1.3 Drive Cycle Information.............................................................................................................................................................................20 5.2 Misfire Monitoring .....................................................................................................................................................................................20 5.2.1 Description ...............................................................................................................................................................................................20 5.2.2 Misfire Monitor Process Hierarchy.............................................................................................................................................................22 5.2.3 Strategy Description .................................................................................................................................................................................23 5.2.4 Misfire Malfunction Criteria........................................................................................................................................................................26 5.2.5 Misfire Enable Criteria...............................................................................................................................................................................27 5.2.6 Drive Cycle Information.............................................................................................................................................................................28 5.3 Evaporative Emission System Monitoring..................................................................................................................................................29 5.3.1 Schematic ................................................................................................................................................................................................29 5.3.2 Description ...............................................................................................................................................................................................30 5.3.3 Implementation for the 5.0 V8 Test Groups ...............................................................................................................................................31 5.3.4 Calculation................................................................................................................................................................................................31 5.3.5 Fault Determination ..................................................................................................................................................................................32 5.3.6 Typical monitoring results .........................................................................................................................................................................34 5.3.7 Monitoring Structure .................................................................................................................................................................................35 5.3.8 Diagnosis Frequency and MIL Illumination ................................................................................................................................................38 5.3.9 Evaporative Emission Canister Purge Valve Description ...........................................................................................................................40 5.3.10 Purge Flow Monitoring Structure...............................................................................................................................................................41 5.3.11 Drive Cycle Information.............................................................................................................................................................................45 5.4 Fuel System Monitoring ............................................................................................................................................................................46 5.4.1 Description ...............................................................................................................................................................................................46 5.4.2 Sub-Feedback Rationality Check - P2096, P2097, P2098 and P2099 .......................................................................................................46 5.4.3 Monitoring Structure .................................................................................................................................................................................47 5.4.4 Drive Cycle Information.............................................................................................................................................................................52 5.5 Oxygen Sensor Monitoring........................................................................................................................................................................53 Land Rover

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5.5.1 5.5.2 5.5.3 5.5.4 5.5.5 5.5.6 5.6 5.6.1 5.6.2 5.6.3 5.6.4 5.6.5 5.6.6 5.6.7 5.6.8 5.7 5.7.1 5.7.2 5.7.3 5.7.4 5.8 5.8.1 5.8.2 5.9 5.9.1 5.9.2 5.10 5.10.1 5.10.2 5.10.3 5.11 5.11.1 5.11.2 5.12 5.12.1 5.12.2 5.13 5.13.1 5.13.2 5.13.3 5.13.4 5.13.5

Upstream Heated Oxygen Sensor Slow Response - P0133, P0153 ..........................................................................................................53 Upstream Heated Oxygen Sensor Slow Activation - P0134 and P0154 .....................................................................................................58 Downstream Oxygen Sensor High or Low Monitor - P0137, P0138, P0157, P0158 ...................................................................................60 Downstream Oxygen Sensor Activity Check - P0140, P0160 ....................................................................................................................65 Downstream Oxygen Sensor Response Check - P0139, P0159................................................................................................................68 Drive Cycle Information.............................................................................................................................................................................86 Cooling System Monitoring .......................................................................................................................................................................87 Thermostat Monitoring - P0128.................................................................................................................................................................87 General Description ..................................................................................................................................................................................88 Flow Chart of Thermostat Monitoring Function ..........................................................................................................................................89 Engine Coolant Temperature Sensor Monitors Stuck - P0116 (ECT1) or P2183 (ECT2)............................................................................90 Range or Performance Failure - P0116 (ECT1) or P2183 (ECT2)..............................................................................................................92 Time to Closed Loop Fuelling Enable Temperature - P0125......................................................................................................................95 Highest Minimum Enable Temperature Achieved - P0126 .........................................................................................................................97 Drive Cycle Information........................................................................................................................................................................... 107 Positive Crankcase Ventilation (PCV) System Monitoring........................................................................................................................ 108 Description ............................................................................................................................................................................................. 108 PCV Valve Location and Hose Layout for the Naturally Aspirated Engine................................................................................................ 109 PCV Valve Location and Hose Layout for the Supercharged Engine ....................................................................................................... 110 Drive Cycle Information........................................................................................................................................................................... 112 Crankshaft Position Sensor..................................................................................................................................................................... 112 Description ............................................................................................................................................................................................. 112 Drive Cycle Information........................................................................................................................................................................... 113 Camshaft Position Sensors..................................................................................................................................................................... 114 Description ............................................................................................................................................................................................. 114 Drive Cycle Information........................................................................................................................................................................... 118 Camshaft Profile Switching (CPS) — Naturally Aspirated Engine Only .................................................................................................... 119 Schematic and Operation........................................................................................................................................................................ 119 Diagnosis ............................................................................................................................................................................................... 120 Drive Cycle Information........................................................................................................................................................................... 125 Cold Start Emission Reduction Monitoring .............................................................................................................................................. 126 Description ............................................................................................................................................................................................. 126 Drive Cycle Information........................................................................................................................................................................... 139 Idle Speed Control .................................................................................................................................................................................. 139 Description ............................................................................................................................................................................................. 139 Drive Cycle Information........................................................................................................................................................................... 141 Manifold Absolute Pressure Sensor ........................................................................................................................................................ 142 Schematic .............................................................................................................................................................................................. 142 High or low input failure - P0107, P0108, P0237 and P0238.................................................................................................................... 143 Range or performance failure - P0106 (Naturally Aspirated Engine) and P0236 (Super Charged Engine)................................................ 143 Range or performance failure - P0106 (Super Charged Engine only) ...................................................................................................... 145 Monitoring Structure ............................................................................................................................................................................... 148

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5.13.6 5.14 5.14.1 5.14.2 5.14.3 5.14.4 5.15 5.15.1 5.15.2 5.15.3 5.16 5.16.1 5.16.2 5.17 5.17.1 5.17.2 5.17.3 5.17.4 5.17.5 5.17.6 5.17.7 5.17.8 5.18 5.18.1 5.18.2 5.19 5.19.1 5.19.2 5.20 5.20.1 5.20.2 5.21 5.21.1 5.21.2 5.21.3 5.21.4 5.22 5.22.1 5.22.2 5.23 5.23.1 5.23.2

Drive Cycle Information........................................................................................................................................................................... 151 Mass Airflow Sensor ............................................................................................................................................................................... 152 Schematic .............................................................................................................................................................................................. 152 High or low input failure - P0102, P0103, P010C and P010D .................................................................................................................. 152 Range or performance failure - P0101, P010B ........................................................................................................................................ 153 Drive Cycle Information........................................................................................................................................................................... 159 Barometric Pressure Sensor ................................................................................................................................................................... 160 High /Low Input Failure ........................................................................................................................................................................... 160 Range / Performance Failure .................................................................................................................................................................. 160 Drive Cycle Information........................................................................................................................................................................... 161 Fuel Pressure System............................................................................................................................................................................. 162 Description ............................................................................................................................................................................................. 162 Drive Cycle Information........................................................................................................................................................................... 166 Intake Air Temperature Sensor ............................................................................................................................................................... 167 Air Intake Temperature Sensor Monitoring .............................................................................................................................................. 167 Intake Air Temperature Sensor - Stuck in Range Diagnostic - P0111 & P00AB ....................................................................................... 168 Intake Air Temperature Sensor - Biased Sensor Diagnostic - P0111 & P00AB ........................................................................................ 170 Intake Air Temperature Sensor 2 - Post-Supercharger - P007B............................................................................................................... 172 Range/Performance Check..................................................................................................................................................................... 174 Rationality Check.................................................................................................................................................................................... 174 Monitoring Structure ............................................................................................................................................................................... 176 Drive Cycle Information........................................................................................................................................................................... 184 Knock Sensor ......................................................................................................................................................................................... 184 Description ............................................................................................................................................................................................. 184 Drive Cycle Information........................................................................................................................................................................... 185 ECM Power Supplies .............................................................................................................................................................................. 186 Description ............................................................................................................................................................................................. 186 Drive Cycle Information........................................................................................................................................................................... 186 Engine Control Module Self Test............................................................................................................................................................. 187 Description ............................................................................................................................................................................................. 187 Drive Cycle Information........................................................................................................................................................................... 188 Engine Starting ....................................................................................................................................................................................... 189 Crank request Signal .............................................................................................................................................................................. 189 Park / Neutral Switch .............................................................................................................................................................................. 189 Starter relay............................................................................................................................................................................................ 189 Drive Cycle Information........................................................................................................................................................................... 191 Accelerator Pedal Position Sensor .......................................................................................................................................................... 192 Description ............................................................................................................................................................................................. 192 Drive Cycle Information........................................................................................................................................................................... 193 Throttle Control System .......................................................................................................................................................................... 194 Description ............................................................................................................................................................................................. 194 Drive Cycle Information........................................................................................................................................................................... 196

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5.24 5.24.1 5.24.2 5.25 5.25.1 5.25.2 5.26 5.26.1 5.26.2 5.27 5.27.1 5.27.2 5.28 5.28.1 5.28.2 5.28.3 5.29 5.29.1 5.29.2 5.30 5.30.1 5.31 5.31.1 5.31.2 5.32 5.32.1 5.32.2 5.33 5.33.1 5.34 5.34.1

Torque Monitoring................................................................................................................................................................................... 197 Description ............................................................................................................................................................................................. 197 Drive Cycle Information........................................................................................................................................................................... 197 Vehicle Speed Signal.............................................................................................................................................................................. 198 Description ............................................................................................................................................................................................. 198 Drive Cycle Information........................................................................................................................................................................... 198 Fuel Injectors.......................................................................................................................................................................................... 199 Description ............................................................................................................................................................................................. 199 Drive Cycle Information........................................................................................................................................................................... 201 Ignition Amplifiers / Coils......................................................................................................................................................................... 202 Description ............................................................................................................................................................................................. 202 Drive Cycle Information........................................................................................................................................................................... 203 Variable Valve Timing ............................................................................................................................................................................. 204 Hardware Check ..................................................................................................................................................................................... 204 Camshaft Position................................................................................................................................................................................... 204 Drive Cycle Information........................................................................................................................................................................... 210 Controller Area Network System ............................................................................................................................................................. 211 Monitoring Structure ............................................................................................................................................................................... 211 Drive Cycle Information........................................................................................................................................................................... 214 Fuel Level Sensor................................................................................................................................................................................... 215 Drive Cycle Information........................................................................................................................................................................... 215 Engine Off Timer .................................................................................................................................................................................... 216 Description ............................................................................................................................................................................................. 216 Drive Cycle Information........................................................................................................................................................................... 217 Ambient Air Temperature........................................................................................................................................................................ 218 Description ............................................................................................................................................................................................. 218 Drive Cycle Information........................................................................................................................................................................... 219 Supercharger Intercooler Water Pump .................................................................................................................................................... 220 Drive Cycle Information........................................................................................................................................................................... 220 High Range Enablement ......................................................................................................................................................................... 221 Drive Cycle Information........................................................................................................................................................................... 222

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2

Introduction This document describes the On Board Diagnostic features of the Engine Management System for the naturally aspirated and supercharged versions of the 5.0 litre V8 engine.

2.1

Inputs and Outputs Input Signals

Monitored by OBD II

•

Transmission Control Module (via CAN) *

•

Coolant Temperature (ECT1)

Yes

•

Radiator Outlet Temperature (ECT2)

Yes

•

Intake Air Temperature

Yes

•

Mass Air Flow (Engine)

Yes

•

Oxygen Sensors

Yes

•

Crankshaft Position

Yes

•

Camshaft Position

Yes

•

Throttle Position

Yes

•

Manifold Pressure

Yes

•

Fuel Pressure (High)

Yes

•

Fuel Pressure (Low)

Yes

•

Boost Pressure (2)

Yes

•

Accelerator Pedal Position (Driver Demand)

Yes

•

Vehicle Speed (ABS via CAN)

Yes

•

Ambient Temperature

Yes

•

Knock Sensors

Yes

•

Diagnosis Module - Leak Detection (EVAP System)

Yes

•

Brake Light Switch

No

•

Cruise Control Switches (via CAN)

No

Land Rover

Yes - Bus check

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Input Signals

Monitored by OBD II

•

Immobiliser (via CAN)

No

•

Alternator Monitor

No

•

SRS Signal

No

•

Real Time Clock (Inst Pack via CAN)

Yes

•

Fuel Tank Level (Inst Pack via CAN)

No

•

Intake Air Temperature Sensor 2 – post supercharger (2)

Yes

•

Fuel Pump Monitor

No

•

Ignition switch

Yes

•

Crank Request

Yes

•

Park/Neutral Switch

Yes

•

Atmospheric Pressure (sensor internal to ECM)

Yes

•

Oil Level and Bulk Temperature Sensor

No

(1) Naturally aspirated engine (2) Supercharged engine

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Output Signals

Monitored by OBD II

•

Transmission Control Module (via CAN) *

Yes – Signals checked separately

•

Throttle Valve Actuator

•

High Pressure Fuel Pumps

•

Ignition Coils

Yes

•

Injection Valves

Yes

•

Purge Valve (EVAP System)

Yes

•

Diagnosis Module - Leak Detection (EVAP System)

Yes

•

Malfunction Indicator Light (MIL) (via CAN)

•

Oxygen Sensor Heating

Yes

•

Engine Starter Relay

Yes

•

ECM Main Relay

Yes

•

Variable Camshaft Timing Valves

Yes

•

Fuel Pump Control (low)

•

Alternator Control

No

•

Main Engine Cooling Fan

No

•

Intercooler Water Pump (2)

Not directly

•

ECM Cooling Fan

No

•

Variable Intake System (1)

No

•

Cam Profile Switching (1)

Yes

•

Symposer (cabin NVH enhancement) (2)

No

•

Cooling Fan Speed

Not directly

•

A/c Condenser Fan

No

Yes Not directly

Not directly

Not directly

(1) Naturally aspirated engine (2) Supercharged engine Land Rover

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2.2

Generic OBD-II Drive Cycle

For each monitoring strategy, the OBD-II drive cycle to be used is stated. The purpose of the drive cycle is to run the onboard diagnostics monitoring strategy under consideration. The number of drive cycles that must be completed in order to illuminate the MIL is given in the Monitoring Operation table for each monitoring strategy. The drive cycle should be performed after any Diagnostic Trouble Codes (DTCs) have been erased from the ECM's memory, or after the battery has been disconnected.

1. Unless stated otherwise, the following generic drive cycle will apply: o

2. Ensure Engine Coolant Temperature is less than 60 C. 3. Start Engine.

4. Allow engine to idle for 3 minutes with heated rear window and aircon on.

5. Turn off HRW. 6. Two light accelerations (0 to 35 mph with light pedal pressure).

7. Two medium accelerations (0 to 45 mph with moderate pedal pressure).

8. Two hard accelerations (0 to 55 mph with heavy pedal pressure).

9. Decelerate to 20mph without braking.

10. Accelerate back to 55mph with moderate pedal pressure.

11. Maintain steady speed of 55mph for 2 minutes.

12. Decelerate gently to stop.

13. Allow engine to idle for 2 minutes.

The vehicle must be operated safely and within all prevailing traffic regulations, when being driven according to the requirements of the above procedure.

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3

Inspection and Maintenance Test Readiness Setting for Vehicles Land Rover Test Group ALRXT05.0001

3.1

Introduction

OBD II systems are required to report if a vehicle has completed its major diagnostic, since its fault memory was last cleared. This is often referred to as "readiness".

Readiness will also be reset if the battery is disconnected or discharged and by re-programming or replacement of the engine control module.

State vehicle emissions test programs usually require that readiness is set as a condition of a vehicle passing their test. This is because they need to know that the diagnostics have had the chance to find a fault, if one is present.

3.2

Readiness Setting

Determining Readiness for I/M Testing In the majority of cases, readiness will be set during normal use of the vehicle. Scan tools report this information as "Monitor status since DTCs last cleared" or similar.

The scan tool will list which of the main monitors are supported and which of these "non-continuous monitors" are "complete" or "ready". The scan tool may also list continuous monitors, such as misfire and fuel system monitoring, but these will always report as complete. (This information is reported under Service $01, PID$01, data bytes C and D according to the SAE scan tool communications standard).

This information allows a technician to identify which monitors are not ready and to operate the vehicle so that these monitors have the best chance of completion.

Data on the "enable conditions" for individual diagnostics is already included in Jaguar's (or Land Rover's) On-Board Diagnostics guide for these test groups, but the following table is intended as a brief guide as to which diagnostics must run to set readiness under each of the categories reported by a scan tool and the basic driving conditions for those monitors.

In addition to these basic parameters, many monitors will not run at abnormal conditions (e.g. high altitude or low ambient temperatures).

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Diagnostic

Typical Scan Tool Display for Support Status

Relevant DTCs (monitors that must run to set readiness)

Monitor Operation Conditions

CAT_SUP: YES

Typical Scan Tool Display for Completion Status CAT_ RDY

Catalyst Monitoring

P0420, P0430

Drive the vehicle until the engine is fully warm, then the vehicle must be driven at a steady speed and throttle, with the engine speed between 1200 and 2400 rpm, and the engine airflow between 14 and 55 grammes/second for at least 25 seconds

Heated Catalyst Monitoring Evaporative System Monitoring

HCAT_SUP: NO

Not relevant

EVAP_SUP: YES

EVAP_ RDY

Secondary Air Injection Monitoring A/C System Refrigerant Monitoring Oxygen Sensor Monitoring

AIR_SUP: NO

Not relevant

Not applicable to these test groups P0442, P0456 P2406, P2405 P2450, P2451 P2404, P2401 P2402, P0447 P0448, P0441 Not applicable to these test groups

O2S_SUP: YES

O2S_ RDY

Oxygen Sensor Heater Monitoring EGR and/or VVT System Monitoring

HTR_SUP: YES

HTR_ RDY

EGR_SUP: YES

EGR_RDY

Land Rover

Engine must have been off for at least 3 hours, fuel level must be between 15 and 85%, ambient between 0 and 40 degrees Celsius, must drive for at least 10 minutes, with 30 seconds of operation between 1200 and 2300 rpm, then leave with the ignition off for at least 15 minutes. May require more driving if the vehicle has been recently re-fuelled.

No longer relevant, may be reported by older scan tools as "ACRF_SUP: NO" P0133, P0153 P0131, P0132 P0151, P0152 P0134, P0154 P0137, P0138 P0157, P0138 P0031, P0032 P0051, P0052 P0054, P0060 P0026, P0028 P0016, P0017 P0018, P0019 P0027, P0029 P003C, P003E (Nat. asp engine only)

Drive the vehicle until the engine is fully warm. There must then be at least two idle periods of at least 30 seconds, a period of vehicle deceleration lasting at least 3 seconds.

Start from cold and allow to idle for at least 2 minutes

Drive the vehicle until the engine is fully warm. The naturally aspirated engine will require two or three periods of brisk acceleration.

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Some scan tools will report the "Monitor Status this Driving Cycle", which shows if the above monitors are able to run during the current period of vehicle operation and if they have completed during the current drive. (Service $01, PID$41, data bytes C and D according to the SAE scan tool communications standard).

The vehicle must be operated safely and within all prevailing traffic regulations, when being driven according to the requirements of the above table.

4

Communication of Monitor Test Results - Mode$06 Diagnostic test results are output to a scan tool in accordance with the requirements of Mode$06 of the SAE J1979 standard. The following table shows the allocation of monitor identifiers, test identifiers, unit and scaling identifiers and which DTCs are associated with each of the test results.

OBD MID

On-Board Diagnostic Monitor Name

00

OBD Monitor IDs supported ($01 - $20) Oxygen Sensor Monitor Bank 1 - Sensor 1

01

Test ID

82 9A 9B 9C

9E

Oxygen Sensor Monitor Bank 1 - Sensor 2

05

Oxygen Sensor Monitor Bank 2 - Sensor 1

83 85 86 9F 82 9A 9B 9C 9D 9E

Land Rover

Unit & Scaling ID

Associated DTC

Slow response A (Symmetric) Slow response A (Rich to Lean) Slow response A (Lean to Rich) Slow response A (Delay Symmetric) Slow response A (Delay Rich to Lean) Slow response A (Delay Lean to Rich) Slow activation A Stuck A Slow response A Slow response A - Time out, failure to reach lean threshold Slow response B (Symmetric) Slow response B (Rich to Lean) Slow response B (Lean to Rich) Slow response B (Delay Symmetric) Slow response B (Delay Rich to Lean) Slow response B (Delay Lean to Rich)

04 04 04 10

P0133 P0133 P0133 P0133

10

P0133

10

P0133

14 0B 10 10

P0134 P0140 P0139 P0139

04 04 04 10

P0153 P0153 P0153 P0153

10

P0153

10

P0153

-

9D

02

Description

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OBD MID

On-Board Diagnostic Monitor Name

Test ID

06

Oxygen Sensor Monitor Bank 2 - Sensor 2

83 85 86 9F

20

OBD Monitor IDs supported ($21 - $40) Catalyst Monitor Bank 1 Catalyst Monitor Bank 2 VVT Monitor Bank 1

21 22 35

88 88 A1 A2

A4 A5 A6 A7 A8 VVT Monitor Bank 2

A1 A2 A3 A4 A5 A6

Land Rover

Slow activation B Stuck B Slow response B Slow response B - Time out, failure to reach lean threshold

Unit & Scaling ID 14 0B 10 10

Associated DTC

0C 0C 1C 1C

P0420 P0430 P0016 P0016

9C

P0026

9C

P0026

1C

P0017

1C

P0017

9C

P0027

9C

P0027

1C 1C

P0018 P0018

9C

P0028

9C

P0028

1C

P0019

1C

P0019

P0154 P0160 P0159 P0159

-

A3

36

Description

Low efficiency A Low efficiency B VVT (intake) retard position fault VVT (intake) retard position fault (misalignment fault) VVT (intake) performance monitor hi A VVT (intake) performance monitor lo A VVT (exhaust) retard position fault VVT (exhaust) retard position fault (misalignment fault) VVT (exhaust) performance monitor hi A VVT (exhaust) performance monitor lo A VVT (intake) retard position fault VVT (intake) retard position fault (misalignment fault) VVT (intake) performance monitor hi B VVT (intake) performance monitor lo B VVT (exhaust) retard position fault VVT (exhaust) retard position fault (misalignment fault)

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OBD MID

On-Board Diagnostic Monitor Name

Test ID A7 A8

3B 3C

EVAP Monitor (0.040”) EVAP Monitor (0.020”)

3D 40

Purge Flow Monitor OBD Monitor IDs supported ($41 - $60) Oxygen Sensor Heater Monitor Bank 1 - Sensor 2 Oxygen Sensor Heater Monitor Bank 2 - Sensor 2 OBD Monitor IDs supported ($61 - $80) OBD Monitor IDs supported ($81 - $A0) Fuel System Monitor Bank 1

42 46 60 80 81

82

A0 A2

Fuel System Monitor Bank 2

OBD Monitor IDs supported ($A1 - $C0) Mis-Fire Cylinder 1 Data

8B 8D AD AE 8F -

Mis-Fire Cylinder 2 Data

Associated DTC

9C

P0029

04 04 04 11 05

P0442 P0456 P0456 P0456 P0441

P0029

Heater deterioration A

0C

P0054

91

Heater deterioration B

0C

P0060

AA

Lean fault A

05

P0171

AB AC AA

Rich fault A Lean/Rich sub-feedback fault A Lean fault B

05 05 05

P0172 P2096/97 P0174

AB AC -

Rich fault B Lean/Rich sub-feedback fault B

05 05

P0175 P2098/99

0B

Exponential Weighted Moving Average for Cyl#1 Stored misfire event during last/current DCY for Cyl#1 Exponential Weighted Moving Average for Cyl#2 Stored misfire event during

24

P0301

24

P0301

24

P0302

24

P0302

-

0B 0C

Land Rover

VVT (exhaust) performance monitor hi A VVT (exhaust) performance monitor lo A Rough leak Small leak area ratio Small leak relative current Small leak execution time Range/performance

Unit & Scaling ID 9C

91

0C A3

Description

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OBD MID

On-Board Diagnostic Monitor Name

Test ID

A4

Mis-Fire Cylinder 3 Data

0B 0C

A5

Mis-Fire Cylinder 4 Data

0B 0C

A6

Mis-Fire Cylinder 5 Data

0B 0C

A7

Mis-Fire Cylinder 6 Data

0B 0C

A8

Mis-Fire Cylinder 7 Data

0B 0C

A9

Mis-Fire Cylinder 8 Data

0B 0C

Land Rover

Description

Unit & Scaling ID

Associated DTC

24

P0303

24

P0303

24

P0304

24

P0304

24

P0305

24

P0305

24

P0306

24

P0306

24

P0307

24

P0307

24

P0308

24

P0308

last/current DCY for Cyl#2 Exponential Weighted Moving Average for Cyl#3 Stored misfire event during last/current DCY for Cyl#3 Exponential Weighted Moving Average for Cyl#4 Stored misfire event during last/current DCY for Cyl#4 Exponential Weighted Moving Average for Cyl#5 Stored misfire event during last/current DCY for Cyl#5 Exponential Weighted Moving Average for Cyl#6 Stored misfire event during last/current DCY for Cyl#6 Exponential Weighted Moving Average for Cyl#7 Stored misfire event during last/current DCY for Cyl#7 Exponential Weighted Moving Average for Cyl#8 Stored misfire event during last/current DCY for Cyl#8

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5

Onboard Monitoring

5.1

Catalyst Monitoring

5.1.1 Description The Catalyst monitor operates once per trip. It waits until all entry conditions are met.

Once all the entry conditions are met, the monitor will start to run. The fuelling is cycled rich and lean by approximately ±3% to achieve a reaction at the downstream oxygen sensor (d/s HO2S): this process is called dither. At the start of any monitoring period, a short delay will occur before data collection in order to ensure that the fuelling is stable when the diagnosis takes place. If for any reason, the entry conditions become invalid, but the monitor has not yet completed then the result and execution time data are retained. If the entry conditions are again fulfilled, the monitor will resume with the stored data, unless there have been more than four attempts to run the check, in which case the monitor will clear the accumulated data and restart the diagnosis.

After the monitor has run for a sufficient period of time, the results are calculated. These are determined by accumulating the locus of the downstream oxygen sensor signal against the accumulation of the upstream oxygen sensor (u/s HO2S), i.e. the more active the downstream sensor, the less oxygen storage capacity the catalyst has, resulting in a correspondingly higher locus value. With a correctly operating catalyst, the downstream sensor is not so active, so lower locus values are obtained than would be recorded with a faulty system.

If the accumulated count is lower than a calibratable threshold then the catalyst diagnostic test has been passed. If the accumulated count equals or exceeds the calibratable threshold then the catalyst system has a problem and the appropriate DTC will be stored.

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5.1.2 Monitoring Structure

Start

Entry Conditions:

Reset test conditions and monitor values

Engine Speed within window ECT within window Mass Airflow within window Engine Speed rate of change below threshold Throttle rate of change below threshold MAF rate of change below threshold Atmospheric Pressure above threshold Sub-feedback within window Short term A/F Trim within window Feedback control active Sub-feedback execution time above threshold Not at idle Vehicle speed within window Time after start above threshold Catalyst temperature within window Engine load within window Inlet Air Temp within window u/s HO2S element impedance within window Integrated airflow counter above threshold

No

Entry conditions met?

No Yes

Is stabilization delay complete?

Test counter maximum exceeded?

No

Yes

Yes

1. Calculate fuelling delays 2. Calculate and apply fuelling dither 3. Calculate front and rear locus levels 4. Calculate failure thresholds

Increment test attempt counter

Yes

Is the test complete?

No

Are entry conditions still met?

No

Yes

Normal judgment

No

Is the fault threshold exceeded?

Yes

Failure judgment

Do flag control and exit (Includes incrementing the catalyst check numerator)

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Catalyst Monitoring Operation Component/ System

Fault Code

Monitoring Strategy Description

Catalyst efficiency bank A P0420 Upstream HO2S signal locus Catalyst efficiency bank B P0430 compared to downstream HO2S signal locus during (catm) A/F dither.

Malfunction Criteria

Threshold value

Secondary Parameter

Locus ratio

>= 15

Engine speed Engine Coolant Temperature Mass airflow Engine speed change Throttle position change Mass airflow change Atmospheric pressure Sub F/B trim Short term A/F trim CL A/F control & sub F/B control Sub F/B executing for Idle Vehicle speed Time after engine start Catalyst temperature D/s HO2S signal (smoothed) Engine load Inlet air temperature U/s HO2S element impedance Integrated Airflow counter

Enable Conditions

Time MIL Required

1300 < RPM < 2400 rpm 60 <= ECT <= 120 degC 14 < MAF < 55 g/s <= 30 rpm/640ms <= 3.5% /1280ms <= 10 g/s/640ms >= 68 kPa 0.975 < F < 1.025 0.70 < trim < 1.30 Active >= 3.0 s Inactive 0 <= v <= 407 mph >= 0 s 500 <= Cat Temp <= 1000 degC 0.0 <= V <= 0.95 V 0.50 <= Engine Load <= 2.0 g/rev >= -20 degC 0 <= Z <= 60 Ohms >= 60 (Integration proceeds if time after start >= 30s and ECT >= 20 degC) High range transfer transmission Active

20 s

2 Drive Cycles

Fault Codes that disable P2229 P2228 P0113 P0112 P00AD P00AC P007D P0420 P007C P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0193 P0192 P0010 P2088 P2089 P0013 P2090 P2091 P001A P001B P001C P0031 (op) P0031 (gs) P0032 P0351 P2300 P2301 P0353 P2306 P2307 P0355 P2312 P2313 P0357 P2318 P2319 P0444 P0458 P0459 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0069 P02EE (bv) P02F0 (bv) P02F2 (bv) P02F4 (bv) P02EE (hl) P02F0 (hl) P02F2 (hl) P02F4 (hl) P0262 (hb) P0268 (hb) P0274 (hb) P0280 (hb) P0261 (lb) P0267 (lb) P0273 (lb) P0279 (lb) P0262 (hg) P0268 (hg) P0274 (hg) P0280 (hg) P0261 (lg) P0267 (lg) P0273 (lg) P0279 (lg) P0201 P0203 P0205 P0207 P0335 (_2) P0336 P0335 (_2s) P0336 (sub) P1315 P1316 P0132 P0131 P0133 P0133 (dl) P0134 P0137

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Catalyst Monitoring Operation Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time MIL Required

P0138 P0140 P2096 P2097 P0036 P0141 P0171 P0172 P0026 (hi) P0026 (lo) P0011 P0012 P0016 P0027 (hi) P0027 (lo) P0014 P0015 P0017 P0191 P0088 P0087 P0000 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P003C P00C6 (dual) P0054 Fault Codes that disable P2229 P2228 P0113 P0112 P00AD P00AC P007D P0430 P007C P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0193 P0192 P0020 P2092 P2093 P0023 P2094 P2095 P001D P001E P001F P0051 P0051 (gs) P0052 P0352 P2303 P2304 P0354 P2309 P2310 P0356 P2315 P2316 P0358 P2321 P2322 P0444 P0458 P0459 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0069 P02EF (bv) P02F1 (bv) P02F3 (bv) P02F5 (bv) P02EF (hl) P02F1 (hl) P02F3 (hl) P02F5 (hl) P0265 (hb) P0271 (hb) P0277 (hb) P0283 (hb) P0264 (lb) P0270 (lb) P0276 (lb) P0282 (lb) P0265 (hg) P0271 (hg) P0277 (hg) P0283 (hg) P0264 (lg) P0270 (lg) P0276 (lg) P0282 (lg) P0202 P0204 P0206 P0208 P1315 P1316 P0152 P0151 P0153 P0153 (dl) P0154 P0157 P0158 P0160 P2098 P2099 P0056 P0161 P0174 P0175 P0028 (hi) P0028 (lo) P0021 P0022 P0018 P0029 (hi) P0029 (lo) P0024 P0025 P0019 P0191 P0088 P0087 P0000 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P003E P00C6 (dual) P0060

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If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.1.3 Drive Cycle Information Please refer to the relevant part of the "Readiness Setting" section.

5.2

Misfire Monitoring

5.2.1 Description The misfire detection monitor runs continuously and is designed to detect levels of misfire that can cause thermal damage to the catalyst and/or result in excessive tailpipe emissions. Determination of a misfire is made by analysis of changes in crankshaft speed, since a misfire will cause a drop in acceleration after an anticipated firing event. This data is analysed in four ways to ensure the detection of all possible combinations of misfire.

The results of the misfire judgement process for each firing event are used to determine whether two failure levels have been met, 'catalyst damage' misfire and 'excess emissions' misfire. Each misfire judgement process has its own failure threshold and calculation period.

The following fault conditions can be identified by the monitor • • • • • •

Cylinder 1 (1A) misfire Cylinder 3 (2A) misfire Cylinder 5 (3A) misfire Cylinder 7 (4A) misfire Catalyst damage misfire Low fuel level misfire

• • • • • •

Cylinder 2 (1B) misfire Cylinder 4 (2B) misfire Cylinder 6 (3B) misfire Cylinder 8 (4B) misfire Excess emissions misfire Random/Multiple cylinder misfire

The misfire monitor operates continuously within the boundaries of the regulated monitor operation window, as shown in the following diagram.

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110 100

Relative Engine Load (%)

90 80

Misfire Monitor Operating Region (within solid boundary)

70 60

Eff ect of 4" Hg 'Pressure Relief'

50 40 30 Idle

20

FTP75 Operating Region

Stabilised engine, sea-level minimum load line

10 0 0

500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 Engine Speed (rpm)

After engine start, the monitor will be enabled as soon as the engine speed rises above the minimum operation speed (150 rpm below fully warm stabilised idle speed). Two revolutions of crank angle data, i.e. one sample of data from each cylinder firing, must then be 'buffered' before any decisions can be made by the monitor. Before engine speed has reached the top of the start flare the monitor will be ready to make misfire judgements, which are then made on every cylinder firing, irrespective of whether the monitor is enabled or not.

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5.2.2 Misfire Monitor Process Hierarchy Cylinder firing complete

Segment offset and period determined, dependent upon engine speed and engine operating conditions

"Catalyst Damage" judgement made and fault code set, if appropriate conditions have been met

Change in angular speed calculated and scaled for better signal resolution. Data manipulated and stored in memory

Adjustment of crank angle tolerance 'adaption' values updated in back up memory for all cylinders, if appropriate conditions met

"Excess emissions" judgement made and code set, if appropriate conditions have been met

Adjustment for crank angle tolerance calculated for current cylinder

Monitor execution conditions checked and monitor enable/disable flag set

No

OK to learn misfire 'adaptions'?

Conditions for adjustment of crank angle tolerance checked and adaption enable/disable flag set

Yes Roll adjustment for crank angle tolerance into existing calculation for current cylinder

Rough road and low fuel level judgments made

Misfire 'signals' calculated and compared against their respective thresholds

Misfire judgement made on the last cylinder firing, including sanity check with current cylinder firing data.

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5.2.3 Strategy Description Introduction Different sections of the monitor operate at different 'loop' rates. The flow chart above details the decisions made for each firing event in approximate chronological order, although some steps may not be made every 'loop'. A further explanation of these decisions is given below: Recording segment time and position, and its manipulation The monitor records crank angle time data every 30° of rotation with a 250 nanosecond measurement accuracy. Each 30° period is known as a 'segment'. The starting point of the segments relative to Top Dead Centre (TDC) firing and the number of segments used can be defined for each application so as to give the best and most robust probability of misfire detection. To maintain good detection across the entire engine speed range the measurement period can be altered between low and high engine speeds. The engine speed at which the measurement period is altered, if any, is determined by experiment.

Additionally, a third measurement period is defined for detection during start-up and when catalyst warm up ignition retard is being used after engine start.

The angular speed of the crankshaft during the ignition stroke is calculated using the segment data, multiplied by a scaling factor for easier storage in the ECM’s memory, manipulated further and stored for each cylinder firing, Adjustment of crank angle tolerance Calculations are made using the stored data to generate an adaptive misfire 'signal'. Errors in the crank angle time data (for example, due to manufacturing tolerances) are calculated for each cylinder individually at pre-determined engine speed breakpoints. Compensating for these errors reduces the variation in amplitude of the misfire signal.

The data is gathered during normal combustion, requiring strict entry conditions to ensure robust adaptions. Adaption values are rolled in to a temporary calculation for the current speed breakpoint.

Misfire 'signal' calculation Where calculated adaption values have been stored in memory the adaptive signal will be calculated. This signal generally has the best opportunity to detect. However, the signal requires data in each speed breakpoint to interpolate between. If there is a breakpoint where no adaptions have been stored then the adaptive signal will only be used for misfire judgements up to the breakpoint immediately below it. For example if there is adaption data stored in memory up to 2000 rpm but none at 2500 rpm the adaptive signal will only be used up to 2000 rpm.

To support detection across the entire engine speed range further misfire 'signals' are calculated. These signals are not adjusted for errors in crank angle tolerance. These signals typically give good probability of detection at low engine speeds but become less effective at higher engine speeds.

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Misfire judgement Misfire judgements are delayed by one firing cycle. This is to allow comparison of the signal with the cylinders that fire before and after it, eliminating 'noisy' signals. Should the monitor repeatedly eliminate the signal over 5 consecutive firings on the same cylinder the monitor will assume that two adjacent cylinders are misfiring, ignore the signal check and allocate the 5 eliminated misfire judgements to the appropriate cylinder.

Adapted and un-adapted signals are compared to their respective thresholds in series. The diagram below illustrates the behaviour of the 'adaptive' misfire signal with 1.0% intermittent misfire applied (data taken from a typical 8 cylinder application) and its judgement threshold.

Should one signal cross the threshold, indicating a misfire, the other methods will be skipped in order to prevent multiple counting of the same misfire event.

150

Misfire

100

Adaptive misfire signal threshold

Misfire Value

Pre-misfire 50

0

-50 Post-misfire

Adaptive misfire signal

-100 0

10

20

30 40 50 60 70 80 90 100 110 120 130 140 150 Cylinder Firing Number (90° crank angle logging)

Adaptive signal characteristic with intermittent misfire Catalyst damage judgement If 200 revolutions of misfire judgements have been made the monitor will make an assessment as to whether 'catalyst damage' levels of misfire have been exceeded or not. The failure level is determined from a look up table. The sum of individual cylinder misfire counters is then compared against this threshold. If the failure threshold is exceeded then the MIL will illuminate and the appropriate DTCs will be stored.

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Storing adaption values in back-up memory If no misfires have been recorded for the last 'catalyst damage' judgement, and sufficient temporary adaption calculations have been made, the temporary adaption data calculated for each cylinder will be stored in 'back-up' memory for the appropriate engine speed breakpoint.

If a single misfire is counted for the last 'catalyst damage' judgement, all temporary adaption data will be reset, along with the temporary calculation.

Once data has been stored in memory it can be updated but will not be erased, even after a battery reset.

Excess emissions judgement If 1000 revolutions of misfire judgements have been made the monitor will make an assessment as to whether 'emissions failure' levels of misfire have been exceeded or not. The failure level is a single threshold value. The sum of individual cylinder misfire counters is compared against this threshold.

If the failure threshold is exceeded then the MIL will illuminate and the appropriate DTCs will be stored.

Monitor execution check Different monitor enable conditions are checked depending upon the operating condition of the engine (for example, fewer conditions apply during engine start). If all the appropriate enable conditions are met the monitor execution flag is set.

Adaptive learning execution check Specific operating conditions necessary for learning misfire 'adaption' values are checked and the adaption execution flag set as appropriate.

Rough road and low fuel level judgement A rolling average of 'delta' wheel speed data is calculated from ABS vehicle speed data transmitted over the CAN. This data is compared to calibrated thresholds to determine if the vehicle is being driven over a rough surface that might cause misdiagnosis of a misfire. If a rough road judgement is made the appropriate flag is set and taken into account the next time monitor execution conditions are checked.

An additional DTC is stored alongside the misfire DTCs if the fuel level is below a calibrateable level. This is to indicate that a possible cause of the misfire DTCs was low fuel level.

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5.2.4 Misfire Malfunction Criteria Cylinder firing complete

B

C

Time measurements taken from toothed crank ring, change in angular velocity calculated, data manipulated and stored in memory

Increase catalyst damage judgement counter by 1 Sum catalyst damage counters for Bank 1 and Bank 2 separately

Increase emissions failure judgement counter by 1 Sum all emissions failure cylinder counters

No

Bank 1 or Bank 2 counts greater than calculated failure threshold?

Monitor enabled?

No

Set catalyst damage normal judgement flag.

Emissions failure counts greater than emissions failure threshold?

No

Set emissions failure normal judgement flag.

Yes Yes

Yes No

Misfire present on previous firing cylinder?

Set preliminary catalyst damage failure judgement flag.

Set preliminary emissions failure judgement flag.

Yes Increment catalyst damage and emissions failure counters by one for identified cylinder

Fuel level > threshold?

No

Yes

Catalyst damage firing cycle counter = 800 ?

Increment catalyst failure judgement counter.

Yes

B

No Fuel level > threshold?

Yes Increment emissions failure judgement counter.

Make temporary / permanent failure judgement based on "Fault Setting" requirements detailed in CARB mailout MSC 98-01

Make temporary / permanent failure judgement based on "Fault Setting" requirements detailed in CARB mailout MSC 98-01

Reset catalyst damage counters for every cylinder Reset catalyst damage firing cycle counter Reset stored values of maximum engine speed and load

Reset emissions failure counters for every cylinder Reset emissions failure firing cycle counter

No

Emissions failure firing cycle counter = 4000 ?

Yes

C

No Increase catalyst damage and emissions failure firing cycle counters by 1

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5.2.5 Misfire Enable Criteria A

Engine running

No Disable Monitor

Engine speed greater than minimum monitor operation speed?

2 Revolutions of cylinder firing data stored in memory?

No

Yes Yes

No

Calculated load greater than minimum load required for monitor operation?

Yes

Yes

No

All other enablement criteria met for monitoring during start & post start?

Yes

Land Rover

No

Any driver throttle transient above threshold?

Has the engine been running for at least 5 seconds?

Yes

No Enable Monitor (and make misfire judgement on every cylinder firing)

Record engine speed and load if greater than value stored in memory (used for catalyst damage fault setting)

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All other enablement criteria met for monitoring?

Yes

No A

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Misfire Monitoring Operation Component/ System

Fault Monitoring Strategy Code Description

Misfire Monitoring Random Misfire P0300 Misfire cylinder 1 P0301 Misfire cylinder 2 P0302 Misfire cylinder 3 P0303 Misfire cylinder 4 P0304 Misfire cylinder 5 P0305 Misfire cylinder 6 P0306 Misfire cylinder 7 P0307 Misfire cylinder 8 P0308

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time MIL Required

Crank speed fluctuation

Misfire during first 1000 P0316 revs Misfire low fuel level P0313

Misfire at catalyst damage level > See Engine speed (LR4 & R/R Sport) Misfire (200 rev block) Engine speed (Range Rover) Charts or Coolant temperature Misfire at excess emissions Estimated ambient temperature level: Atmospheric pressure Naturally aspirated engines > 110 counts Filtered fuel level Supercharged engines > 85 counts Engine load (1000 rev block) Engine speed delta Engine speed delta (R/Rover SC only) Engine load delta Throttle angle delta Throttle angle delta (R/R Sport SC only) Fuel cut off Rough road Slip control Misfire during the first 1000 engine revoultions after start Misfire at catalyst damage or Fuel level excessive emissions level

Catalyst damage P1315 These codes are stored Excess emissions P1316 with the relevant cylinder codes for use in inhibiting other functions, but are not output to a scan tool

450 <= RPM <= 6800 rpm 560 <= RPM <= 6800 rpm > -8.1 degC -20 < IAT < 119 degC > 68 kPa >= 3 % Positive < 400 rpm/80 ms < 500 rpm/80 ms

Depends on engine speed, misfire pattern and time after engine start

< 0.50 g/rev/80 ms < 30.1%/8 ms < 39.8%/8 ms Not Active Not Detected Not Active

<= 5 %

Fault Codes that disable Misfire P0335 (_1) P0335 (_2) P0336 P0335 (_1s) P0335 Detection (_2s) P0336 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.2.6 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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5.3

Evaporative Emission System Monitoring

5.3.1 Schematic

EVAP canister purge valve

Fuel Tank EVAP canister Engine

ECM

Solenoid Ambient Air M Pump

Filter Heater

Diagnostic Module – Tank Leakage (DMTL)

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5.3.2 Description The evaporative emission monitoring system permits the detection of leaks with a diameter of 0.5 mm (20 thou of an inch) or greater. This is achieved by means of a pressure test of the system, performed by the Diagnostic Module - Tank Leakage (DMTL), which is an electrically operated pump fitted to the atmospheric air intake of the EVAP canister.

The test proceeds in two stages: •

Reference Leak Measurement - The pump operates against the reference restriction within the DMTL. The Engine Control Module measures the current consumption of the pump motor during this phase.

•

Leak Measurement - The solenoid in the DMTL is operated in order to shut off normal purge airflow into the EVAP canister. The pump can now pressurise the fuel tank and vapour handling system. The Engine Control Module again measures the current consumed by the pump motor and by comparing this with the reference current, determines whether a leak is present. A high current indicates a tight system and a low current indicates a leaking system.

Fault Conditions That Can Be Identified Rough leak (1.0 mm >) - P0442 Small leak (0.5 mm >) - P0456 Reference current high - P2406 Reference current low - P2405 COV stuck open - P2450 COV stuck closed - P2451 Reference leak check too long - P2404 Noise fault - P2404 Pump electrical high - P2402 Pump electrical low - P2401 COV electrical high - P0448 COV electrical low - P0447 Pump heater open circuit - P240A Pump heater low - P240B Pump heater high - P240C

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5.3.3 Implementation for the 5.0 V8 Test Groups 5.3.4 Calculation Reference Current Measurement The measured pump motor current is filtered to remove noise. There are a number of levels in the filtering process: current_filter_0 is calculated every 0.010 seconds: current_filter_0 = Pump_current + (0.00001525 x (current_filter_0 (n-1) - Pump_current)) The following values are calculated every 0.080 seconds: current_filter_1 = current_filter_0 + (0.0039 x (current_filter_1 (n-1) - current_filter_0)) current_filter_2 = current_filter_0 + (0.9804 x (current_filter_2 (n-1) - current_filter_0)) current_filter_3 = current_filter_0 + (0.9804 x (current_filter_3 (n-1) - current_filter_0)) 1. At the start of the reference leak determination period, current_filter_2 and current_filter_3 are set equal to current_filter_1 2. If current_filter_1 is within ref_current_lower and ref_current_upper, then ref_stab_counter is incremented, where: ref_current_lower = 0.98 x current_filter_2 ref_current_upper = 1.0195 x current_filter_2 3. If ref_stab_counter has incremented from 0, then ref_stab_value = current_filter_3 4. If ref_stab_counter >= 5.0 seconds, then ref_stab_value_dev = absolute value of (current_filter_3 - ref_stab_value) 5. If ref_stab_counter >= 5.0 seconds and ref_stab_value_dev <= 0.1 mA, then Reference_current = current_filter_3 In summary, for the successful determination of the reference current, current_filter_1 must be within around +/- 2% of current_filter_2 for at least 5 seconds and current_filter_3 cannot change by more than 0.1 mA during that 5 second period.

If the current_filter_1 is above or below a threshold (14 or 37 milliamps) during the reference leak determination, then a timer is incremented.

If the timer exceeds 2 seconds, then a fault (P2405 or P2406) is set. There are separate timers for each of the two fault paths and the time must be continuous for the diagnostic to fail.

The P2404 diagnostic is set if the reference leak determination has been executing without completing for more than 60 seconds.

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5.3.5 Fault Determination Unlike some previous implementations of the DMTL system by Jaguar Land Rover, for these test groups the "area ratio" method of analysing the pump motor current is used in order to determine if a leak is present or not. The main advantage of this method is that the fault threshold is not dependent on the level in the fuel tank.

Two values are calculated, the relative pump current (Irel), which is given by: Relative Pump Current (Irel) =

Pump Current - Minimum Pump Current Reference Leak Current - Minimum Pump Current

And the Area Ratio (Ak), which is the area between the measured pump current and the ideal pump current (A1 in the chart below) divided by the area below the ideal pump current, corrected for the minimum pump current (A2 in the chart below):

Pump Current

Reference Leak Pump Current 0.5mm

A1

Actual Pump Current

Ideal Pump Current for Tight System

A2 Minimum Pump Current

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Time

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This graph shows the relationship between Area Ratio (Ak) and Relative Pump Current (Irel) for different leak conditions:

0.5mm Leak 1.0mm or > Leak

No Leak

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5.3.6 Typical monitoring results

Pump Current

Reference Leak Current 0.5mm

System Tight

0.5mm Leak

Leak > 1mm Minimum Pump Current

Time

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5.3.7 Monitoring Structure

Start

Engine Shut Down

End

No

Are release conditions for leak detection met?

Conditions Met

Yes Reference Leak Measurement

Reference Current in range?

Soak time > Threshold Time after start > Threshold Ignition switched off Engine Speed = 0 Vehicle at rest Voltage Supply in Range Ambient Temperature in Range Altitude < Threshold Canister Loading < Limit Fuel Level in Range Fuel level stabilised Evap. Purge Valve Closed No Component Errors Detected - (DMTL, Purge Valve)

Component Error Detected

No

Yes Rough Leak Measurement

Filler Cap Removal and/or Refuelling?

Yes

End

No

Reference Current - Min. Pump Current (during Rough Leak Measurement) < Threshold

Yes

Component Error Detected

No

Relative Pump Current > Threshold

No

No Rough Leak Detected

Yes

A

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Yes

Area Ratio or Time > Threshold

Yes

Potential Rough Leak Detected

Yes

End

No

Small Leak Measurement

Filler Cap Removal and/or Refuelling?

No

Component Error Detected

Yes

Maximum diagnostic time exceeded?

No

Relative pump Current > Threshold

Yes

No

Area ratio or Time > Threshold

No

Leak Free System Detected

Yes

A Reference Leak Repeat Measurement and Small Leak Judgement

New Reference Current in range?

No

Component Error Detected

Yes

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Yes

Leak Free System Detected

No

Current < New Reference Leak Current Yes Potential Small Leak Detected

A

Shut down ECM

Engine Start

Refueling Detected

No

Fuel level change during soak < threshold?

Yes

Potential rough leak detected during soak?

Yes

Rough Leak Confirmed

No

Small Leak Confirmed

Yes

Potential small leak detected during soak?

No

A Increment IUMPR small or large leak numerators as appropriate

Yes

Soak period time > Maximum diagnostic time?

No

End

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5.3.8 Diagnosis Frequency and MIL Illumination 5.3.8.1

No refueling detected; leak > 0.040" Soak > 3h

Ignition

Driving Cycle

Soak > 3h

Driving Cycle

Soak > 3h

Driving Cycle

Soak > 3h

Driving Cycle

ON OFF

Leak diagnosis

Cycle Bit

If Leak detected: Failure Bit < 2 min after engine start (tank fuel level settled) MIL

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ON OFF

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5.3.8.2

After refueling detected; leak > 0.020" Soak > 3h

Ignition

Driving Cycle

Soak > 3h

Driving Cycle

Soak > 3h

Driving Cycle

Soak > 3h

Driving Cycle

ON OFF

Refueling detected Leak diagnosis

Cycle Bit

If Leak detected: Failure Bit < 2 min after engine start (tank fuel level settled) MIL

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ON OFF

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5.3.9 Evaporative Emission Canister Purge Valve Description Circuit Continuity Circuit continuity is checked by monitoring the commanded and the actual state of the EVAP canister purge valve. If the commanded and actual states do not match, a timer is started. If the states do not match within the timed period then a failure is registered. If the failure occurs on two drive cycles then the appropriate DTC is logged.

Flow Check The purge flow monitor works continuously and is designed to detect low purge flow caused by a blockage in the purge system or a malfunctioning EVAP canister purge valve.

The basis of the diagnostic is to detect the presence of intake pressure pulses caused by the 10 Hz pulse width modulated control of the EVAP canister purge valve duty (as shown in the purge operation diagram below).

A discrete Fourier transform (DFT) calculation is used to help distinguish these pulses from other noises present in the intake pressure signal.

Purge operation

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5.3.10 Purge Flow Monitoring Structure

Start

Entry Conditions

No

Purge active Engine speed within a window Purge duty within a window Atmospheric pressure - MAP > threshold MAP delta < threshold IAT >= threshold Fuel cut not in progress

No Entry conditions satisfied?

Yes

No

No

Enable DFT calculation of purge flow pulsation amplitude

Initial monitoring delay complete?

No

Yes

Monitoring duration complete?

Yes

No

Pulsation amplitude > threshold?

Yes

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Increment “potential fault judgment” counter

Increment “potential normal judgment” counter

Fault counter > threshold?

Normal counter > threshold?

Yes

Yes

Fault judgment confirmed

Normal judgment confirmed

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Evaporative Emission System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Fuel Evaporative Leak Pressure test of system using Monitoring (leak) ECM driven pump Rough leak P0442 (leak_4)

Small leak P0456 (leak_6/7)

Reference current high P2406 (pump hardware fault) (leak_0) Reference current low P2405 (pump hardware fault) (leak_1) Change over valve stuck P2450 open (pump hardware fault) (leak_3) Change over valve stuck P2451 close (pump hardware fault) (leak_10) Reference leak (pump P2404 hardware fault) (leak_2)

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Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

MIL Time Required

[(Area ratio

>= 0.40

Soak time

>= 10800 secs

From 200 to

Time after start Ignition switch Voltage supply Estimated ambient temperature Atmospheric pressure Engine Coolant Temperature Canister loading Fuel level Refuelling not detected

>= 600 secs Off 10 <= Ubatt <= 15 V 0 <= Amb temp <= 40 degC >= 70 kPa <= 110 degC <= 5.0 15 <= FTL <= 85 % (level change < 10% during soak period) Stabilised Closed

250 secs

and Time taken to pressurize tank or Time taken to pressurize tank and Relative pump current [Area ratio or Time taken to pressurize tank and Relative pump current Reference leak current

> 200 s) > 250 s] < 0.35... < 0.55 > 0.40 > 700 s] < 1.4 > 37 mA

Reference leak current

< 14 mA

Pump current delta at Change over valve close point (for pump current <= ref leak current) Pump current delta at Change over valve close point (for pump current > ref leak current) Time taken for pump current stabilisation during reference leak measurement

> 2.0 mA

Fuel level stabilisation Purge valve duty

From 250 to 890 secs

> 2.0 mA

> 60 s

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2 Drive Cycles

Evaporative Emission System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Noise fault (pump P2404 hardware fault) (leak_5)

Malfunction Criteria

Threshold value

Total test duration without any other judgement being made

> 800 s

Secondary Parameter

Enable Conditions

MIL Time Required 2 Drive Cycles

Fault Codes that disable Leak P2229 P2228 P0643 P0642 P0073 P0072 P240A Detection P240B P240C P0444 P0458 P0459 P0071 (hi) P0071 (lo) P0069 P0441 P2610 P2610 (hi) P2610 (lo) U0155 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600 Electrical continuity checking P2402 Leak detection pump power stage P2401 (leak_8/9)

Short to battery Short to ground or open circuit

Leak detection module state

operating

4.0 s

2 Drive Cycles

Fault Codes that disable P2401 P2229 P2228 P0643 P0642 P0073 P0072 P240A & P2402 P240B P240C P0444 P0458 P0459 P0071 (hi) P0071 (lo) P0069 P0441 P2610 P2610 (hi) P2610 (lo) U0155 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600

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Evaporative Emission System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Leak detection pump P0448 solenoid valve P0447 (leak_11/12)

Short to battery Short to ground or open circuit

Leak detection pump P240A heater circuit P240B (ardph) P240C

Open circuit Short to ground Short to battery

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

Leak detection module state

operating

4.0 s

MIL

2 Drive Cycles Fault Codes that disable P0447 P2229 P2228 P0643 P0642 P0073 P0072 P240A P240B & P0448 P240C P0444 P0458 P0459 P0071 (hi) P0071 (lo) P0069 P0441 P2610 P2610 (hi) P2610 (lo) U0155 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600 1.52 s

2 Drive Cycles

Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 P240A, P240B & P240C (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600 Evaporative Purge Valve Circuit continuity P0444 (arprg) P0458 P0459

Open circuit Short to ground Short to battery

1.52 s

2 Drive Cycles

Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 purge valve circuit monitoring (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600

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Evaporative Emission System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Evaporative Purge Valve Low flow P0441 Check for intake pressure Amplitude of 10Hz intake (purg) pulsations caused by the 10Hz pressure pulsations pulse width modulated control of the purge valve duty

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

< 0.0003 kPa > 2 counts

Purge Fuel Cut Estimated ambient temperature Purge valve duty Intake manifold pressure delta Engine speed Atmospheric press - filtered MAP Accumulated pulsation samples

Active Not active >= -10 degC 0.45 < duty ratio < 0.65 < 0.8 kPa 500 < RPM < 2500 rpm see table = 750

25 s

2 Drive Cycles

Fault Codes that disable P0441 P0010 P0013 P001A P001B P001C P001D P001E P001F P0020 P0023 P001E P001F P0020 P0023 P0069 P0106 P0107 P0108 P0116 (hi) P0116 (lo) P0116 (stk) P0117 P0118 P0125 P0236 P0237 P0238 P0444 P0458 P0459 P0601 P0604 (ramint) P0604 (ramsht) P0605 (fmemo) P0605 (romcnt) P0605 (romexc) P0605 (romint) P0606 (cnt) P0606 (dupl) P0606 (eci) P0606 (ssc) P0606 (wdog) P0607 P0642 P0643 P0660 P0661 P0662 P1603 P2088 P2089 P2090 P2091 P2092 P2093 P2094 P2095 P2228 P2229

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

Entry Condition for Purge Valve Flow Diagnostic (TBD_PURG_DIFFPRESCHOK) – DTC P0441 - Naturally Aspirated Engines Engine Speed (rpm)

0

1000

2000

3000

4000

5000

6000

7000

Atmospheric press - filtered MAP (kPa)

30

30

30

30

30

30

30

30

Entry Condition for Purge Valve Flow Diagnostic (TBD_PURG_DIFFPRESCHOK) – DTC P0441 - Supercharged Engines Engine Speed (rpm)

0

1149

1150

1250

1251

5000

6000

7000

Atmospheric press - filtered MAP (kPa)

30

30

256

256

30

30

30

30

5.3.11 Drive Cycle Information Please refer to the relevant part of the "Readiness Setting" section.

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5.4

Fuel System Monitoring

5.4.1 Description This diagnostic monitors the long-term adaptions of the fuel system. If the adaptions exceed calibrated thresholds for a calibratable time then an appropriate DTC will be recorded.

This monitor operates continuously provided the entry conditions have been met. Any of the components that make up the fuel system and are individually monitored, like the oxygen sensors, fuel pressure sensor and fuel delivery system, must also themselves be in working order with no faults.

5.4.2 Sub-Feedback Rationality Check - P2096, P2097, P2098 and P2099 The sub-feedback function uses the downstream Oxygen sensor to correct for any deviation in the lambda = 1 point of the front sensor. This monitor checks that the sub-feedback adaption values calculated by this function are within a specified range.

The diagnostic runs if the entry conditions have been met, all the oxygen sensors are working, the fuel system adaptions are within their limits and sub-feedback is operating If the sub-feedback adaption values for either bank exceed a rich or lean threshold, then a fault will be detected.

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Start

5.4.3 Monitoring Structure

Reset fault and normal timers

A No Entry Conditions Time after start >= threshold Engine speed > threshold MAF >= threshold ECT within window

Entry conditions true?

Yes

Yes

Is fuelling adaption value >= lean threshold?

No

Reset lean normal timer

Increment lean fault timer

No

Increment lean normal timer

Is fuelling adaption value <= rich threshold?

Yes

Reset rich normal timer

Increment lean normal timer

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Increment rich fault timer

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Is lean normal timer > threshold?

No

Yes

Yes

Lean normal judgment

Is lean fault timer > threshold?

Lean fault judgment

Reset lean fault timer No

Is rich normal timer > threshold?

No

Yes

Yes

Rich normal judgment

Is rich fault timer > threshold?

Rich fault judgment

Reset rich fault timer

No

A

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Fuel System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Fuel System (fsys) Fuel too lean - Bank A P0171 Long term FT Fuel too lean - Bank B P0174 values outside limits in any 1 Fuel too rich - Bank A P0172 of the 5 adaption areas Fuel too rich - Bank B P0175

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Long term FT

>= 120 %

2 Drive Cycles

<= 78 %

>= 30.0 s >= 500 rpm >= 2.0 g/s 60 < T < 120 degC

10 s

Long term FT

Afterstart Engine speed Mass airflow Engine Coolant Temperature

Fault Codes that disable Bank P0118 P0117 P0643 P0642 A Monitoring P0116 (hi) P0116 (lo) P0116 (stk) P0125 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) Fault Codes that disable Bank P0118 P0117 P0643 P0642 B Monitoring P0116 (hi) P0116 (lo) P0116 (stk) P0125 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Fuel System Monitoring Component/ System

Fault Code

Fuel System - Secondary Trim Sub feedback too lean P2096 Bank A Sub feedback too lean P2098 Bank B Sub feedback too rich P2097 Bank A Sub feedback too rich P2099 Bank B

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Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Sub feedback adaption outside limit value

Sub feedback trim value

>= 1.8 %

All following entry conditions true Sub feedback

For > 2.0 s Executing & Catalyst Diagnosis Not currently executing >= 0 >= 0 >= 9.0 V > 60 degC < 85 degC <= 1.0 Not currently executing > 100 degC 850 < RPM < 3000 rpm 0.4 < load < 2.0 g/rev Not currently executing < 0.04 <= 100 % >= see table

>= 1.8 % <= 1.8 % <= 1.8 %

Subfeedback deviation rich limit Subfeedback deviation lean limit Battery volatge Engine Coolant Temperature Inlet air temperature Purge duty ratio CPS functional test Catalyst temperature Engine speed Engine load U/s HO2S slow response test Feedback compensation error Relative purge ratio Airflow since start of last fuel cut

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Time Required

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MIL

2 Drive Cycles

Fuel System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable Bank P2229 P2228 P0113 P0112 P00AD P00AC P007D A Sub Feedback Monitoring P007C P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0193 P0192 P0010 P2088 P2089 P0013 P2090 P2091 P001A P001B P001C P0031 (op) P0031 (gs) P0032 P0351 P2300 P2301 P0353 P2306 P2307 P0355 P2312 P2313 P0357 P2318 P2319 P0444 P0458 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P02EE (bv) P02F0 (bv) P02F2 (bv) P02F4 (bv) P02EE (hl) P02F0 (hl) P02F2 (hl) P02F4 (hl) P0262 (hb) P0268 (hb) P0274 (hb) P0280 (hb) P0261 (lb) P0267 (lb) P0273 (lb) P0279 (lb) P0262 (hg) P0268 (hg) P0274 (hg) P0280 (hg) P0261 (lg) P0267 (lg) P0273 (lg) P0279 (lg) P0201 P0203 P0205 P0207 P0335 (_2) P0336 P0340 (run) P0341 P0365 (run) P0366 P0335 (_2s) P0336 (sub) P0340 (sub) P0341 (sub) P0365 (run_s) P0366 (sub) P1315 P1316 P0132 P0131 P0133 P0133 (dl) P0134 P0137 P0138 P0140 P0036 P0141 P0171 P0172 P0026 (hi) P0026 (lo) P0011 P0012 P0016 P0027 (hi) P0027 (lo) P0014 P0015 P0017 P0441 P0191 P0088 P0087 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P003C P00C6 (dual) P2279 P0054

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Fuel System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable Bank P2229 P2228 P0113 P0112 P00AD P00AC P007D B Sub Feedback Monitoring P007C P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0193 P0192 P0020 P2092 P2093 P0023 P2094 P2095 P001D P001E P001F P0051 P0051 (gs) P0052 P0352 P2303 P2304 P0354 P2309 P2310 P0356 P2315 P2316 P0358 P2321 P2322 P0444 P0458 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P02EF (bv) P02F1 (bv) P02F3 (bv) P02F5 (bv) P02EF (hl) P02F1 (hl) P02F3 (hl) P02F5 (hl) P0265 (hb) P0271 (hb) P0277 (hb) P0283 (hb) P0264 (lb) P0270 (lb) P0276 (lb) P0282 (lb) P0265 (hg) P0271 (hg) P0277 (hg) P0283 (hg) P0264 (lg) P0270 (lg) P0276 (lg) P0282 (lg) P0202 P0204 P0206 P0208 P0335 (_2) P0336 P0345 (run) P0346 P0390 (run) P0391 P0335 (_2s) P0336 (sub) P0345 (run_s) P0346 (sub) P0390 (run_s) P0391 (sub) P1315 P1316 P0152 P0151 P0153 P0153 (dl) P0154 P0157 P0158 P0160 P0056 P0161 P0174 P0175 P0028 (hi) P0028 (lo) P0021 P0022 P0018 P0029 (hi) P0029 (lo) P0024 P0025 P0019 P0441 P0191 P0088 P0087 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P003E P00C6 (dual) P2279 P0060

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

Subfeedback Entry Condition (TFI_SUBFBADP_ FCAIRLIM) – DTCs P2096, P2097, P2098 and P2099 Airflow Since Start of Fuel Cut (g)

10.7

30.5

90.0

199.9

500.5

1199.3

1699.8

8000.2

Disablement Threshold (g)

10.7

30.5

50.4

100.7

300.6

700.4

999.5

10000.6

5.4.4 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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5.5

Oxygen Sensor Monitoring

5.5.1 Upstream Heated Oxygen Sensor Slow Response - P0133, P0153 The Heated Air Fuel Sensor (HAFS) response diagnostic monitors the primary exhaust gas sensor for an increase in its time to respond to a change in exhaust gas composition and its rate of response to that change, following the delay period. The monitor separately checks for symmetrical and asymmetrical deterioration in both of these characteristics. This gives a total of six separate failure modes that are monitored for each of the two sensors.

The monitor is designed to run during periods of idle operation. It is a non-continuous diagnostic that will attempt to run during a drive cycle whenever the entry conditions are met until a decision has been made. The monitor will not then operate again until the next drive cycle.

This is an intrusive monitor where the fuelling is cycled rich and lean by a set value at a frequency of about 0.5 Hz. Before this fuelling "dither" is applied, the monitor may set a reduced target pressure for the high pressure fuel system. This is to ensure that the injectors run in a more consistent area of their fuel delivery characteristic. Data is taken for each failure mode and accumulated over a set number of fuelling shifts from rich to lean and lean to rich.

The delay data is corrected for engine airflow, as this is a measure of the system transport time. The response data is calculated by measuring the lambda change between the signal turning point and the next change in the fuelling dither. This is divided by the time taken for this signal change and then multiplied by a correction factor that depends on the time taken. This lambda response is multiplied by an additional compensation factor that depends on the lambda response and the target lambda change. The target lambda change is equivalent to the lambda shift of the applied fuelling dither. The final corrected response is normalized by dividing it by the target lambda change.

Each accumulated value is divided by the number of samples to provide a mean result for each mode.

For the symmetrical failure modes, these test values are compared with fault thresholds. For a delay fault, the test value must exceed a threshold. Typically this is around 0.6 seconds. For a response fault, the final lambda response ratio must be lower than a fault threshold which is typically equal to 0.1.

Asymmetric faults are only assessed if the ratio of the test results indicates that the delay or response is biased in one direction. For example, for a rich to lean delay fault, the rich to lean delay test value divided by the lean to rich delay test value must be greater than or equal to 1.2.

If a fault is suspected, then the diagnostic will run an additional period of fuelling dither. There maybe a short delay time between the two monitoring periods. If the sensor exceeds a failure threshold for a second time then the fault condition is confirmed and the relevant DTC will be stored. Otherwise the sensor is judged as fault free.

If the sensor is judged as fault free at the end of the first period of fuelling dither, then a second, ghost test must be completed before the IUMPR numerator can be incremented.

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The flow chart below shows the operation of this monitor.

The diagnostic makes two measurements for each of the applied fuelling dithers:

t1

t2

t3

∆λ ∆ λTgt

Normal Operation: Delay time = t2 - t1 λ response = λ∆ / λ∆Tgt

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The diagnostic monitors for six different types of deterioration: 1. Slowed Response to a Fuelling Change Assessed as symmetrically deteriorated (lean to rich and rich to lean), asymmetrically deteriorated (rich to lean) or asymmetrically deteriorated (lean to rich)

t1

t2

t3

∆λ

∆ λTgt

Turning point in correct region, but λ does not respond as required Fault detected: λ response < threshold λ response = λ∆ / λ∆Tgt t3 – t2 is f(Engine speed, Airflow)

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2. Delayed Response to a Fuelling Change Assessed as symmetrically deteriorated (lean to rich and rich to lean), asymmetrically deteriorated (rich to lean) or asymmetrically deteriorated (lean to rich)

t1

t2

t3

∆λ

∆ λTgt

Turning point delayed: Fault detected: Delay time > threshold Where delay time = t2 – t1 Upper limit of t3 is set by dither interval, i.e. if the dither switch occurs before t3 is due, then t3 is set to the dither switch point

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Slow Response - Flowchart Start

Entry Conditions: Engine Speed within window Mass Airflow within window ECT above threshold Vehicle Speed within Window Pedal rate of change below threshold Throttle rate of change below threshold Atmospheric Pressure above threshold Sensor Element impedance within window Vapour concentration below threshold or purge not active After start time above threshold Feedback control active Engine Load within window Engine load rate of change below threshold MAP change over calibrated time period >= Threshold for at least a pre-determined time Catalyst Diagnostic not Executing Catalyst Oxygen Neutralisation not in progress Brake light switch not changed from off to on in last 0s

Reset test conditions and monitor values

Entry conditions met?

No

Yes

Is stabilization delay complete?

No

Yes

No

Calculate and apply fuelling dither Measure sensor response

Is ghost test Flag set?

Yes

Is the test complete?

Yes

No

Are entry conditions met?

No

Yes Yes

Yes

Is ghost test Flag set?

Is delay timer expired?

No

N o Are any fault thresholds exceeded?

No

Set ghost test flag

No

Set temporary failure flag

Y e Is the temporary failure flag set?

Y e

Normal judgment

Failure judgment

Do flag control and exit (Includes incrementing the upstream HO2S IUMPR numerator)

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5.5.2 Upstream Heated Oxygen Sensor Slow Activation - P0134 and P0154 This monitor is used to check that the pre-catalyst sensors are operating correctly after their heaters have been turned on.

After the engine has started, the sensor heaters are activated after a delay time. The diagnostic monitors the change in impedance of the element of the sensor due to the heating. If the impedance level has not dropped by a defined level in a defined amount of time, then a failure will be detected.

The general flowchart of the monitor is shown below.

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Monitor execution 512 msec

Upstream HO2 HO2S Activation Monitor P0134 & P0154

Start

Conditions For Sensor IC not being in Reset Heater duty >= threshold And Sensor IC not in reset

Battery Voltage within window Time after engine stall above a threshold Time after engine start above a threshold ECT above a threshold

No

Reset entry condition timer

No No

Yes Increment entry condition timer

Set fuel cut timer to post fuel cut wait time

Yes

Fuel cut in progress?

No

Decrement fuel cut timer

No

Entry condition timer >= threshold?

Yes

Fuel cut timer = 0?

Yes

Yes

HAFS impedance >= fault threshold?

No Increment normal timer

Increment fault timer

Fault timer Maximum Value exceeded?

Yes No

Normal timer Maximum Value exceeded?

Yes Set normal end judgment

Set failure end judgment

End

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5.5.3 Downstream Oxygen Sensor High or Low Monitor - P0137, P0138, P0157, P0158 This monitor checks the downstream oxygen sensor (d/s HO2S) for a circuit fault. There are three parts to this monitor.

• •

Low or Open circuit High

A low voltage failure is judged if the output of the sensor does not exceed a calibrated value when all of the entry conditions are satisfied and a timer has expired.

A high voltage failure is judged if the sensor output remains above a calibrated value when all of the entry conditions are satisfied, including a defined period of overrun fuel cut off being completed during the drive cycle.

A general flow diagram of the operation of this monitor is shown below.

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Downstream HO2 HO2S Low Monitor P0137 & P0157

Monitor execution 128 msec Start

Reset d/s HO2S max voltage to 0

Is current d/s HO2SVoltage > stored max d/s HO2S Voltage?

No Accumulated values from SubSub-Function

Yes

Heater Duty Mass Airflow

Max d/s HO2S Voltage = d/s HO2S Voltage

No No Entry Conditions For Low Voltage Check Feedback Active Heater control active Linear AFR compensation within window or fuel cut not active within a time period Lambda Signal within window Engine speed above a threshold Mass Air Flow above a threshold Heater control signal above a threshold Accumulated Mass Airflow above a threshold Accumulated heater duty above a threshold

Entry Conditions satisfied for Low Check?

Yes

D/s HO2S Max Voltage < threshold

Yes Increment Low Check fault timer No

Timer Maximum Value exceeded?

Reset fault timer

Yes

Set Low failure end judgment

Set Low normal end judgment

End

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Monitor execution 128 msec

Downstream HO2S High Monitor P0138 & P0158

Start

Reset d/s HO2S min voltage to 65536 Reset Fuel Cut Flag

Is current d/s HO2S Voltage < stored min d/s HO2S Voltage?

Accumulated values from Sub-Function

No

Heater Duty Mass Airflow

Yes

Min d/s HO2S Voltage = d/s HO2S Voltage No

Entry Conditions For High Voltage Check Feedback Active Heater control active Linear AFR compensation within window or fuel cut not active within a time period Heater control signal above a threshold Accumulated heater duty above a threshold Accumulated Mass Airflow above a threshold Fuel Cut Flag Set

Entry Conditions satisfied for High Check?

Yes

D/s HO2S Min Voltage > threshold Fuel Cut Flag from Sub-Function

Reset fault timer Yes

No

Set High failure end judgment

Set High normal end judgment

End

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MAF and d/s HO2S Heater Accummulated Values

Monitor execution 128 msec

Used in the d/s HO2S High, d/s HO2S Low, and d/s HO2S activity monitors Start

Entry Conditions For Mass Airflow Accumulation IAT within window ECT above a threshold After start timer has exceeded a threshold Atmospheric Pressure above a threshold

Are conditions for MAF signal accumulation true?

No Yes

Increment MAF Accumulation value

Entry Conditions For Heater Duty Accumulation IAT within window ECT above a threshold After start timer has exceeded a threshold Atmospheric Pressure above a threshold

Are conditions for Heater Duty accumulation true?

No Yes

Increment d/s HO2S Heater Accumulation value

Yes

Zero MAF Accumulation value

Has a fuel cut operation ended?

No

End

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Downstream HO2S Fuel Cut Flag Setting

Monitor execution 128 msec

Used for the d/s HO2S High and d/s HO2S Activity Monitors

Start

No Reset d/s HO2S fuel cut counter

Fuel cut execution enabled No

Yes

Increment d/s HO2S Fuel cut counter

Yes

Fuel cut counter > threshold

Yes

Set d/s HO2S fuel cut flag

End

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5.5.4 Downstream Oxygen Sensor Activity Check - P0140, P0160 The monitor runs once per drive cycle and is intended to detect if the downstream oxygen sensor signal is permanently at a voltage within its normal operating range. The monitor checks that the rear sensor voltage has moved by more than a calibrated threshold.

Maximum and minimum voltages are continuously updated for the downstream oxygen sensor. The difference between these values is then calculated.

Provided that the entry conditions are fulfilled, which include a fuel cut having occurred, then this voltage difference is compared with a failure threshold.

If the difference has not exceeded this failure threshold then a fault code will be stored.

A flow chart of the diagnostic is shown below.

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Downstream HO2S Activity Monitor P0140 & P0160

Monitor execution 128 msec Start

Accumulated values from Sub-Function Heater Duty Mass Airflow

Entry Conditions For D/s HO2S Activity Monitor Fuel cut not in progress above a threshold Closed loop fuelling active Linear AFR compensation within a window Heater control signal above a threshold Accumulated heater duty above a threshold Accumulated Mass Airflow above a threshold Fuel Cut flag set

Entry Conditions satisfied for Activity Monitor?

Fuel Cut Flag from Sub-Function

Yes

Test value from Sub-Function

Test value >= threshold?

Yes No

Set Activity failure end judgment

Set Activity normal end judgment

No Increment restart timer

Restart timer greater than threshold and fuel cut occurring?

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Reset restart timer

Yes

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Monitor execution 128 msec

Downstream HO2 HO2S Activity Test Value Calculation

Start

Set d/s HO2S max voltage to 0 Set d/s HO2S min voltage to 65536 Set Test Value to 0

Is current d/s HO2S Voltage < stored min d/s HO2S Voltage?

Yes

Min d/s HO2S Voltage = d/s HO2S Voltage No

Is current d/s HO2S Voltage > stored max d/s HO2S Voltage?

Yes

Max d/s HO2S Voltage = d/s HO2S Voltage

No

Test Value = Max Voltage - Min Voltage

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5.5.5 Downstream Oxygen Sensor Response Check - P0139, P0159 The diagnostic runs once per drive cycle and monitors the downstream oxygen sensor voltage for a correct response when exposed to a change in mixture from rich to lean.

The monitor checks the time taken for the downstream oxygen sensor voltage to drop from a higher to a lower value during 2 periods of fuel cut operation.

A number of entry conditions must be satisfied, before the diagnostic will operate: • • • • • •

There must have been more than 3 seconds since the last fuel cut The downstream oxygen sensor signal must have been above 0.55V for at least 5 seconds The accumulated downstream oxygen sensor heater energy must have exceeded a threshold The accumulated engine airflow must have exceeded a threshold The sensor heater control signal must be above a threshold The engine speed must be greater than 1650 rpm at the start of the fuel cut

If the response rate has exceeded the failure threshold, then a fault code will be stored.

If the downstream oxygen sensor voltage does not reach the lower threshold within a specified time, then a fault code will also be stored, this decision can be made on the first or second period of monitoring over a fuel cut.

A general flow chart of the diagnostic is shown below.

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Downstream HO2 HO2S Response Monitor P0139 & P0159

Monitor execution 8 msec Start

Reset Fuel Cut Flag

Reset Rich to Lean timer Reset Max Judge timer to 5 seconds

No

Fuel cut in progress?

No

Increment No Fuel Cut Off timer

No

Yes

Increment Rich Time counter

Yes

d/s HO2S signal > 0.55 V?

No

Entry Conditions Activity Check

Yes

Entry Conditions satisfied for Activity Check?

Accumulated heater energy above a threshold Engine speed above threshold (1300 rpm) Accumulated Engine Airflow above threshold d/s HO2S sensors activated

Yes

Accumulated values from SubSub-Functions

Engine Speed >= 1650 rpm, Fuel cut started, Rich Time counter >= 5 s and No Fuel cut off timer >= 3 s

Heater Duty Mass Airflow No

No

Yes

Decrement Max Judge timer

D/s HO2S signal between 0.2 and 0.5 V?

Yes

Increment Rich to Lean timer

No

D/s HO2S signal > 0.5 V or fuel cut not in progress?

No

Max judge timer expired?

No

D/s HO2S signal falls below 0.2V? Yes Calculate test value

Yes

Test completed twice?

Yes

Yes

Test value >= threshold?

Set Activity failure end judgment

No

Set Activity normal end judgment

End

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Oxygen Sensors Downstream (HO2S) D/s HO2S A low input P0137

Sensor voltage stuck low

Sensor voltage maximum

< 0.15 V

D/s HO2S B low input P0157 (doxh_l)

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Secondary Parameter

Enable Conditions

Time Required

Engine Speed >= 500 rpm Afterstart counter >= 0 s Heater control Active Heater PWM control signal >= 0% Accumulated Mass Air Flow >= 5000 (This accumulates if: Atmospheric pressure >= 65 kPa Closed Loop Fuelling Active Linear A/F compensation 0.70 <= A/F Comp <= 1.30 Engine Coolant Temperature >= -30 degC Afterstart counter >= 0 s Intake Air Temperature -30 <= IAT <= 120 degC Heater control Active) (The accumulated MAF resets if a fuel cut occurs or the engine stalls) Accumulated d/s HO2S heater >= 170000 energy (This accumulates if the MAF accumulation conditions are True)

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MIL

2 Drive Cycles

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Oxygen Sensors Downstream (HO2S) D/s HO2S A high input P0138 D/s HO2S B high input P0158 (doxh_h)

Sensor voltage stuck high

Sensor voltage minimum

> 0.05 V

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Secondary Parameter

Enable Conditions

Time Required

MIL

Engine Speed >= 500 rpm 2 Drive Cycles Afterstart counter >= 0 s Heater control Active Heater PWM control signal >= 0% Accumulated Mass Air Flow >= 5000 Accumulated d/s HO2S heater >= 170000 energy Over run fuel cutoff duration >= 3.0 sec has occurred Fault Codes that disable Bank A P0103 P0102 P010D P010C P0118 P0117 P0643 Monitoring P0642 P0351 P2300 P2301 P0353 P2306 P2307 P0355 P2312 P2313 P0357 P2318 P2319 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P02EE (bv) P02F0 (bv) P02F2 (bv) P02F4 (bv) P02EE (hl) P02F0 (hl) P02F2 (hl) P02F4 (hl) P0262 (hb) P0268 (hb) P0274 (hb) P0280 (hb) P0261 (lb) P0267 (lb) P0273 (lb) P0279 (lb) P0262 (hg) P0268 (hg) P0274 (hg) P0280 (hg) P0261 (lg) P0267 (lg) P0273 (lg) P0279 (lg) P0201 P0203 P0205 P0207 P1315 P1316 P0140 P0036 P0141 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0054

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable Bank B P0103 P0102 P010D P010C P0118 P0117 P0643 P0642 Monitoring P0352 P2303 P2304 P0354 P2309 P2310 P0356 P2315 P2316 P0358 P2321 P2322 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P02EF (bv) P02F1 (bv) P02F3 (bv) P02F5 (bv) P02EF (hl) P02F1 (hl) P02F3 (hl) P02F5 (hl) P0265 (hb) P0271 (hb) P0277 (hb) P0283 (hb) P0264 (lb) P0270 (lb) P0276 (lb) P0282 (lb) P0265 (hg) P0271 (hg) P0277 (hg) P0283 (hg) P0264 (lg) P0270 (lg) P0276 (lg) P0282 (lg) P0202 P0204 P0206 P0208 P1315 P1316 P0160 P0056 P0161 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0060

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Oxygen Sensors Downstream (HO2S) Heater control circuit Bank A Low P0036 Heater resistance check Bank B Low P0056 at OFF Or voltage check at OFF

Bank A Bank B

High P0141 Heater voltage check at ON High P0161 )

Heater functionality Bank A P0054 Bank B P0060 (doxd)

The voltage at the heater drive stage when the heater is off, is a measure of the resistance of the heating circuit.

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Heater circuit resistance

> 216 Ohms

Battery Voltage

11.0 < V < 16.0 V

5.0 s

2 Drive Cycles

Voltage

< 0.75 * Vbatt

Voltage

> 0.25 * Vbatt

Filtered low side heater voltage The fault threshold is mapped against the heater supply voltage, which is determined from the measured voltage at the ECM and the status of the other loads in the supply circuit, such as the VVT actuators and the u/s HO2S heaters

< See table

5.0 s

2 Drive Cycles Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) Downstream Heater circuit P0604 (ramint_s) P0605 (romint) P0605 (romint_s) Monitoring P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600

Heater voltage when heater is off Heater duty ratio Starter relay Battery voltage Time after ignition on or crank

<> 320 V < 95 % Not on >= 10.5 V >= 0.512 s

5.12 s

2 Drive Cycles

Fault Codes that disable P0036 P0141 P1603 P0606 (cnt) P0606 (cnt_s) P0604 Downstream Heater rationality (ramint) P0604 (ramint_s) P0605 (romint) P0605 Bank A Monitoring (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable P0056 P0161 P1603 P0606 (cnt) P0606 (cnt_s) P0604 Downstream Heater rationality (ramint) P0604 (ramint_s) P0605 (romint) P0605 Bank B Monitoring (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Oxygen Sensor Monitoring Component/ System

Fault Code

Oxygen Sensors Downstream (HO2S) Bank A no activity P0140 Bank B no activity P0160 (doxe)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

HO2S sensor voltage behaviour

d/s HO2S voltage max - min

< 0.35 V

Secondary Parameter

Time Required

Engine Speed >= 500 rpm Over run fuel cutoff duration >= 3 s has occurred Afterstart counter >= 0 s Heater PWM control signal >= 0% Accumulated Mass Air Flow >= 5000 (This accumulates if: Atmospheric pressure >= 65 kPa Closed Loop Fuelling Active Linear A/F compensation 0.70 <= A/F Comp <= 1.30 Engine Coolant Temperature >= -30 degC Afterstart counter >= 0 s Intake Air Temperature -30 <= IAT <= 120 degC Heater control Active) (The accumulated MAF resets if a fuel cut occurs or the engine stalls) Accumulated HO2S heater energy (This accumulates if the MAF accumulation conditions are True)

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Enable Conditions

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MIL

2 Drive Cycles

>= 170000

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Fault Codes that disable P0140 P0103 P0102 P010D P010C P0118 P0117 P0643 P0642 P0351 P2300 P2301 P0353 P2306 P2307 P0355 P2312 P2313 P0357 P2318 P2319 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P02EE (bv) P02F0 (bv) P02F2 (bv) P02F4 (bv) P02EE (hl) P02F0 (hl) P02F2 (hl) P02F4 (hl) P0262 (hb) P0268 (hb) P0274 (hb) P0280 (hb) P0261 (lb) P0267 (lb) P0273 (lb) P0279 (lb) P0262 (hg) P0268 (hg) P0274 (hg) P0280 (hg) P0261 (lg) P0267 (lg) P0273 (lg) P0279 (lg) P0201 P0203 P0205 P0207 P1315 P1316 P0137 P0138 P0036 P0141 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0054 Fault Codes that disable P0160 P0103 P0102 P010D P010C P0118 P0117 P0643 P0642 P0352 P2303 P2304 P0354 P2309 P2310 P0356 P2315 P2316 P0358 P2321 P2322 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P02EF (bv) P02F1 (bv) P02F3 (bv) P02F5 (bv) P02EF (hl) P02F1 (hl) P02F3 (hl) P02F5 (hl) P0265 (hb) P0271 (hb) P0277 (hb) P0283 (hb) P0264 (lb) P0270 (lb) P0276 (lb) P0282 (lb) P0265 (hg) P0271 (hg) P0277 (hg) P0283 (hg) P0264 (lg) P0270 (lg) P0276 (lg) P0282 (lg) P0202 P0204 P0206 P0208 P1315 P1316 P0157 P0158 P0056 P0161 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0060

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Oxygen Sensor Monitoring Component/ System

Fault Code

Oxygen Sensors Downstream (HO2S) HO2S Bank A slow P0139 response HO2S Bank B slow P0159 response

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Sensor voltage signal resonse Too slow during a fuel cut

Time taken for the sensor signal to drop from 0.50 to 0.15 V during a fuel cut

>= 0.6 s

Engine speed

>= 1000 rpm

2 Drive

(>= 1000 rpm at start of measurement) >= 68 kPa >= 0% >= 5000

Cycles

or Sensor signal does not fall below 0.15 V during a fuel cut within a time of

>= 3.0 s

Atmospheric pressure Heater PWM control signal Accumulated Mass Air Flow (This accumulates if: Atmospheric pressure >= 65 kPa Closed Loop Fuelling Active Linear A/F compensation 0.70 <= A/F Comp <= 1.30 Engine Coolant Temperature >= -30 degC Afterstart counter >= 0 s Intake Air Temperature -30 <= IAT <= 120 degC Heater control Active) (The accumulated MAF resets if a fuel cut occurs or the engine stalls) Accumulated HO2S heater energy (This accumulates if the MAF Accumulation conditions are True) Integrated heater duty or Heater duty ratio or Downstream HO2S Signal Number of fuel cuts required for judgement Fuel Cut Sensor Voltage before fuel cut

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Time Required

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>= 170000

>= See table >= See table >= 0.70 V >= 1 Active for >= 3.0 s >= 0.55 V for at least 1.0 s

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MIL

Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Fault Codes that disable P0139 P2229 P2228 P0103 P0102 P010D P010C P0118 P0117 P0643 P0642 P0351 P2300 P2301 P0353 P2306 P2307 P0355 P2312 P2313 P0357 P2318 P2319 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0069 P02EE (bv) P02F0 (bv) P02F2 (bv) P02F4 (bv) P02EE (hl) P02F0 (hl) P02F2 (hl) P02F4 (hl) P0262 (hb) P0268 (hb) P0274 (hb) P0280 (hb) P0261 (lb) P0267 (lb) P0273 (lb) P0279 (lb) P0262 (hg) P0268 (hg) P0274 (hg) P0280 (hg) P0261 (lg) P0267 (lg) P0273 (lg) P0279 (lg) P0201 P0203 P0205 P0207 P0335 (_2) P0336 P0335 (_2s) P0336 (sub) P1315 P1316 P0132 P0131 P0137 P0138 P0140 P0036 P0141 P0171 P0172 P0000 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0054

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable P0159 P2229 P2228 P0103 P0102 P010D P010C P0118 P0117 P0643 P0642 P0352 P2303 P2304 P0354 P2309 P2310 P0356 P2315 P2316 P0358 P2321 P2322 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0069 P02EF (bv) P02F1 (bv) P02F3 (bv) P02F5 (bv) P02EF (hl) P02F1 (hl) P02F3 (hl) P02F5 (hl) P0265 (hb) P0271 (hb) P0277 (hb) P0283 (hb) P0264 (lb) P0270 (lb) P0276 (lb) P0282 (lb) P0265 (hg) P0271 (hg) P0277 (hg) P0283 (hg) P0264 (lg) P0270 (lg) P0276 (lg) P0282 (lg) P0202 P0204 P0206 P0208 P0335 (_2) P0336 P0335 (_2s) P0336 (sub) P1315 P1316 P0152 P0151 P0157 P0158 P0160 P0056 P0161 P0174 P0175 P0000 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0060

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Oxygen Sensors Upstream (U/s HO2S) A slow response P0133 Accumulated response time to B slow response P0153 forced fuelling dither during (uoxs) steady state driving.

The test runs twice, if a fault is detected on the first test.

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Malfunction Criteria

Response rate test value

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

< 0.1

Engine speed Mass airflow Engine Coolant Temperature Vehicle speed Accelerator pedal change

500 < RPM < 1000 rpm 6.0 < MAF < 14.0 g/s >= 75 degC 0 <= VS <= 0.6 mph >= 4%/160ms no more than 7 times during test <= 1%/160ms >= 68 kPa 0 < Z < 60 ohm Not active

30 s For each test and 5.0 s between tests

2 Drive Cycles

Or (Lean to rich test value And Rich to lean test value And Lean to rich response ratio Or (Rich to lean test value And Lean to rich test value And Rich to lean response ratio Or Response delay time Or (Lean to rich delay time And Rich to lean delay time And Lean to rich delay ratio Or (Rich to lean delay time And Lean to rich delay time And Rich to lean delay ratio

< 0.1 <> 0 < 0.8) < 0.1 <> 0 < 0.8) > 0.62 s > 0.62 s <> 0 >= 1.20)

Throttle angle change Atmospheric pressure Element impedance Purge or Vapour concentration Afterstart Closed loop A/F control Engine load Engine load change MAP Change (current value compared with value 1.6 s ago) Catalyst diagnostic Catalyst Oxygen neutralisation Brake light switch

<= 255 >= 60 s Active 0.45 to 2.0 g/rev <= 0.001 g/rev over 1 rev <= 1.75 kPa for at least 0.256 s Not in progress Not in progress Not changed from off to on in last 0 s

> 0.62 s <> 0 >= 1.20)

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable P0133 P2229 P2228 P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0193 P0192 P0010 P2088 P2089 P0013 P2090 P2091 P001A P001B P001C P0031 (op) P0031 (gs) P0032 P0351 P2300 P2301 P0353 P2306 P2307 P0355 P2312 P2313 P0357 P2318 P2319 P0444 P0458 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P0507 P0506 P02EE (bv) P02F0 (bv) P02F2 (bv) P02F4 (bv) P02EE (hl) P02F0 (hl) P02F2 (hl) P02F4 (hl) P0262 (hb) P0268 (hb) P0274 (hb) P0280 (hb) P0261 (lb) P0267 (lb) P0273 (lb) P0279 (lb) P0262 (hg) P0268 (hg) P0274 (hg) P0280 (hg) P0261 (lg) P0267 (lg) P0273 (lg) P0279 (lg) P0201 P0203 P0205 P0207 P0335 (_2) P0336 P0340 (run) P0341 P0365 (run) P0366 P0335 (_2s) P0336 (sub) P0340 (sub) P0341 (sub) P0365 (run_s) P0366 (sub) P1315 P1316 P0132 P0131 P0134 P0171 P0172 P0026 (hi) P0026 (lo) P0011 P0012 P0016 P0027 (hi) P0027 (lo) P0014 P0015 P0017 P0441 P0191 P0088 P0087 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2123 P2122 P2128 P2127 P2138 P2138 (sub) P2119 (dif) P2119 (dif_h) P2118 P2119 (cnt) P2119 (spg) P0123 P0122 P0223 P0222 P0121 P2135 (dif) P2135 (dif_s) P0500 (ud) P0500 (qf) P0500 (ud_s) P0500 (qf_s) P003C P00C6 (dual) P2279

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable P0153 P2229 P2228 P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0193 P0192 P0020 P2092 P2093 P0023 P2094 P2095 P001D P001E P001F P0051 P0051 (gs) P0052 P0352 P2303 P2304 P0354 P2309 P2310 P0356 P2315 P2316 P0358 P2321 P2322 P0444 P0458 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P0507 P0506 P02EF (bv) P02F1 (bv) P02F3 (bv) P02F5 (bv) P02EF (hl) P02F1 (hl) P02F3 (hl) P02F5 (hl) P0265 (hb) P0271 (hb) P0277 (hb) P0283 (hb) P0264 (lb) P0270 (lb) P0276 (lb) P0282 (lb) P0265 (hg) P0271 (hg) P0277 (hg) P0283 (hg) P0264 (lg) P0270 (lg) P0276 (lg) P0282 (lg) P0202 P0204 P0206 P0208 P0335 (_2) P0336 P0345 (run) P0346 P0390 (run) P0391 P0335 (_2s) P0336 (sub) P0345 (run_s) P0346 (sub) P0390 (run_s) P0391 (sub) P1315 P1316 P0152 P0151 P0154 P0174 P0175 P0028 (hi) P0028 (lo) P0021 P0022 P0018 P0029 (hi) P0029 (lo) P0024 P0025 P0019 P0441 P0191 P0088 P0087 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2123 P2122 P2128 P2127 P2138 P2138 (sub) P2119 (dif) P2119 (dif_h) P2118 P2119 (cnt) P2119 (spg) P0123 P0122 P0223 P0222 P0121 P2135 (dif) P2135 (dif_s) P0500 (ud) P0500 (qf) P0500 (ud_s) P0500 (qf_s) P003E P00C6 (dual) P2279

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Oxygen Sensors Upstream (U/s HO2S) Heater control circuit Bank A low P0031 Bank B low P0051

Open circuit or Short to ground

Bank A high P0032 Bank B high P0052 (aruh)

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

1.52 s

2 Drive Cycles

Short to battery

Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) Upstream Heater Monitoring P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Oxygen Sensor Monitoring Component/ System

Fault Code

Upstream HO2S Control Module Bank A low P0131 B- bank low P0151

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Element short circuit check

U/s HO2S +ve voltage And Abs((U/s HO2S +ve voltage) - (U/s HO2S -ve voltage))

<= 3.58 V

Positive Sensor Element Voltage too low Negative Sensor Element Voltage too low Element impedance too high

Bank A high P0132 B- bank high P0152 (uoxm)

Positive Sensor Element Voltage too high Negative Sensor Element Voltage too high

< 0.23 V

Secondary Parameter

Ignition U/s HO2S control And for the Element Impedance Check only: Accumulated heater duty Total heater on time

Enable Conditions

Time Required

MIL

On Executing

4.96 s

2 Drive Cycles

And U/s HO2S Voltage U/s HO2S +ve voltage

> 3.55 V < 1.12 V

U/s HO2S -ve voltage

< 0.57 V

4.96 s

U/s HO2S impedance

>= 500 ohms

4.96 s

U/s HO2S +ve voltage

>= 3.58 V

4.96 s

U/s HO2S -ve voltage

>= 3.59 V

4.96 s

>= 20.0 s >= 125 s 4.96 s

Fault Codes that disable U/s P0031 (op) P0031 (gs) P0032 P1603 P0606 (cnt) HO2S Control Module Bank A P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 Monitoring (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) Fault Codes that disable U/s P0051 P0051 (gs) P0052 P1603 P0606 (cnt) P0606 HO2S Control Module Bank B (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 Monitoring (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Oxygen Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Oxygen Sensors Upstream (U/s HO2S) Bank A Slow Activation P0134 u/s HO2S Impedance not met Bank B Slow Activation P0154 closed loop fuelling enable (uoxe) condition

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

U/s HO2S impedance

> 60 ohms

Voltage supply Heater duty (see Table for Setting criteria) Time after engine stall Time after engine start Engine Coolant Temperature Time in above conditions Fuel Cut Time after fuel cut

9.0 <= V <= 16.0 V >= 0.119 s

5s

2 Drive Cycles

> 26.88 s >= 0.160 s >= -40 degC >= 30 s Not active > 10.00 s

Fault Codes that disable P0134 P0031 (op) P0031 (gs) P0032 P0132 P0131 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) Fault Codes that disable P0154 P0051 P0051 (gs) P0052 P0152 P0151 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

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Downstream HO2S Heater Fault Threshold (TBD_DOXD_ FALTLEVL) – DTCs P0054 and P0060 Filtered Heater Supply Voltage (V)

9.00

10.00

11.00

12.00

13.00

14.00

15.00

16.00

Fault Threshold (V)

8.00

9.00

10.00

11.00

12.00

13.00

14.00

15.00

HEGO Response Entry Condition (TCM_HEGOACTIV_ACTIVDUTY) – DTCs P0139 and P0159 Engine Coolant Temperature (degC)

-10.30

0.30

10.20

20.10

30.00

80.20

Integrated Duty Ratio (%)

30000

30000

38300

25500

17000

6300

HEGO Response Entry Condition (TCM_HEGOACTIV_TOTALDUTY) – DTCs P0139 and P0159 Initial Catalyst Temperature (degC)

-10

0

80

100

300

900

Integrated Duty Ratio (%)

77500

77500

50000

15000

10000

10000

Heater duty guard map for u/s HO2S activation diagnostic (MIUH_HEAT_GUARDFIXEX) – DTCs P0134 and P0154 -30.00 -20.00 -15.63 Engine Start -15.00 Temperature -0.63 (degC) 0.00 4.38 5.00

Time after Engine Start (ms) The highlighted region exceeds the 120ms entry criteria for the activation diagnostic 160 0 0 0 0 0 0 0 120

2080 18 18 18 18 18 18 18 160

14880 18 18 18 18 18 18 18 160

15040 18 18 18 18 18 18 18 120

24960 18 18 18 18 18 18 18 120

25120 18 18 18 120 120 120 120 120

40000 18 18 18 120 120 120 120 120

80000 18 18 18 120 120 120 120 120

120000 18 18 18 120 120 120 120 120

124800 120 120 120 120 120 120 120 120

5.5.6 Drive Cycle Information Please refer to the relevant part of the "Readiness Setting" section.

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5.6

Cooling System Monitoring

5.6.1 Thermostat Monitoring - P0128 System Schematic

Degas

Throttle Body Twin Venturi Pump

Head

Head

ECT1 sensor

Level sensor Engine Oil Cooler Block

Radiator

Cabin Heater

Trans Oil Cooler

nd

2 ECT Sensor

Pump Thermostat

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5.6.2 General Description Bypass Flow from Engine

2nd ECT Sensor (ECT2) Flow to Pump and back to Engine

Flow from Radiator

The diagnostic checks for a partially open thermostat under conditions when the thermostat would be expected to be shut.

A second engine coolant temperature sensor (ECT2) is installed in the inlet to the thermostat that measures the temperature of the coolant flowing out from the radiator. The diagnostic calculates the temperature drop across the radiator (ECT1 - ECT2).

If the enablement criteria are met and the temperature drop across the radiator is greater than or equal to a threshold that depends on engine coolant temperature (ECT1) and engine coolant temperature (ECT1) at engine start, then a timer will be incremented. If the timer exceeds a value that depends on engine coolant temperature (ECT1) at engine start and estimated ambient temperature, then a fault will be detected.

If the enablement criteria are met and the temperature drop across the radiator is less than a threshold that depends on engine coolant temperature (ECT1) and engine coolant temperature (ECT1) at engine start, then a second timer will be incremented. If this timer exceeds a predetermined value, then the thermostat is judged to be fault free.

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5.6.3 Flow Chart of Thermostat Monitoring Function Monitor execution 1280 msec

Thermostat Diagnostic - P0128

Start

No Reset Timers

Entry Conditions for Thermostat Diagnostic

Entry conditions satisfied for thermostat diagnosis?

Estimated ambient temperature within a window ECT at start within a window MAF > threshold Engine speed >= threshold Time after start >= threshold (ECT - estimated ambient temperature) at start within a window

Increment fault timer

Yes Calculate fault threshold from an ECT and ECT@start dependent map

Yes

ECT1 - ECT2 >= fault threshold?

No

Reset fault timer

No

Reset normal timer

No Calculate normal threshold from an ECT and ECT@start dependent map

Increment normal timer

Yes

ECT1 - ECT2 < normal threshold?

Calculate fault timer threshold from an ECT@start and estimated ambient temp. dependent map

Fault timer > fault timer threshold?

Yes

No

Normal Timer > threshold?

Yes

Set thermostat normal judgment

Set thermostat fault judgment

End

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5.6.4 Engine Coolant Temperature Sensor Monitors Stuck - P0116 (ECT1) or P2183 (ECT2) This monitor checks that the two engine coolant temperature sensors are not stuck in range. The monitor for each of the sensors is similar in operation, but with some differences in the entry conditions.

Entry conditions for P0116 (ECT1): • The engine speed is over a calibrated limit •

The radiator outlet temperature (ECT2) has changed by a calibrated value or the inlet air temperature must have dropped by more than a calibrated amount whilst the engine was off

Entry conditions for P2183 (ECT2): • The engine speed is over a calibrated limit •

The engine coolant temperature (ECT1) temperature has changed by a calibrated value

•

The engine coolant temperature (ECT1) temperature is above a threshold

After the entry conditions have been true for a calibrated time, then the engine coolant temperature must change by a calibrated amount otherwise a failure will be detected. If the engine coolant temperature does change by an amount equal to or greater than this threshold then a normal judgment is made.

The flow chart shown below explains the operation of this diagnostic.

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Engine Coolant Temperature Stuck in Range Check - P0116 & P2183

Monitor execution 160 msec Start

No

Reset Timer

Entry Conditions for ECT1 Stuck in Range Check Maximum ECT2 - minimum ECT2 >= threshold Or IAT at Ignition Off - IAT at Ignition On >= threshold No

No

Engine speed >= threshold?

Yes

Entry conditions satisfied for ECT stuck in range check?

Yes Entry Conditions for ECT2 Stuck in Range Check

Increment Timer

Maximum ECT - minimum ECT >= threshold ECT2 >= threshold

Timer >= threshold?

Yes

Yes

Maximum ECT - Minimum ECT > Fault Limit?

Set ECT stuck in range normal judgment

No

Set ECT stuck in range failure judgment

End

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5.6.5 Range or Performance Failure - P0116 (ECT1) or P2183 (ECT2) The monitor checks that each of the engine coolant temperature sensors is reading a correct value when compared to other temperature sensors on the vehicle at engine start. The diagnostic is similar for both sensors.

Diagnostic Operation for ECT1: If the engine has been off for greater than a calibrated time period, external engine heating has not been detected, and the ECT2 and right hand air flow temperature sensors are within a calibrateable range of each other, then the ECT1 coolant temperature sensor reading is compared to the average readings of the ECT2 sensor and the right hand airflow temperature sensor. The ECT1 coolant temperature sensor must be within a calibrated threshold of this value for a normal judgment to be made, otherwise if it is outside this threshold then a fault will be detected.

Diagnostic Operation for ECT2: If the engine has been off for greater than a calibrated time period, external engine heating has not been detected, and the ECT1 and right hand air flow temperature sensors are within a calibrateable range of each other, then the ECT2 coolant temperature sensor reading is compared to the average readings of the ECT1 sensor and the right hand airflow temperature sensor. The ECT2 coolant temperature sensor must be within a calibrated threshold of this value for a normal judgment to be made, otherwise if it is outside this threshold then a fault will be detected.

The flow charts below explain the operation of this diagnostic for each of the two engine coolant temperature sensors.

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Engine Coolant Temperature Biased at Start - P0116

Monitor execution 160 msec Start

Yes

Reset Temperature Sum Values Reset data point counter

No Entry Conditions for ECT Biased Check

No

Entry conditions satisfied for ECT biased check?

Engine has been stopped Engine soak time within window Block heater not detected

Yes

Starter motor being operated?

No ECT_Sum = ECT_Sum + ECT ECT2_Sum = ECT2_Sum + ECT2 RH IAT_Sum = RH IAT_Sum + RH IAT Data Point Counter = Data Point Counter + 1

Data Point Counter = 4?

Yes Average ECT = ECT_Sum/4 Average ECT2 = ECT2_Sum/4 Average RH IAT = RH IAT_Sum/4

(maximum of Average ECT2 and Average RH IAT) - (minimum of Average ECT2 and Average RH IAT) <= threshold?

Yes

Test Value High = Average ECT - (maximum of Average ECT2 and Average RH IAT)

Test Value Low = (minimum of Average ECT2 and Average RH IAT) - Average ECT

Yes

Test Value High > High Limit?

Set ECT biased high failure judgment

No

Set ECT biased high normal judgment

No Yes

Test Value Low > Low Limit?

Set ECT biased low failure judgment

No

Set ECT biased low normal judgment

End

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Engine Coolant Temperature Biased at Start - P2183

Monitor execution 160 msec Start

Yes

Reset Temperature Sum Values Reset data point counter

No Entry Conditions for ECT2 Biased Check

No

Entry conditions satisfied for ECT2 biased check?

Engine has been stopped Engine soak time within window Block heater not detected

Yes

Starter motor being operated?

No ECT_Sum = ECT_Sum + ECT ECT2_Sum = ECT2_Sum + ECT2 RH IAT_Sum = RH IAT_Sum + RH IAT Data Point Counter = Data Point Counter + 1

Data Point Counter = 4?

Yes Average ECT = ECT_Sum/4 Average ECT2 = ECT2_Sum/4 Average RH IAT = RH IAT_Sum/4

(maximum of Average ECT and Average RH IAT) - (minimum of Average ECT and Average RH IAT) <= threshold?

Yes

Test Value High = Average ECT2 - (maximum of Average ECT and Average RH IAT)

Test Value Low = (minimum of Average ECT and Average RH IAT) - Average ECT2

Yes

Test Value High > High Limit?

Set ECT2 biased high failure judgment

No

Set ECT2 biased high normal judgment

No Yes

Test Value Low > Low Limit?

Set ECT2 biased low failure judgment

No

Set ECT2 biased low normal judgment

End

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5.6.6 Time to Closed Loop Fuelling Enable Temperature - P0125 The engine coolant temperature is monitored to ensure it reaches the closed loop fuelling enable temperature. If the estimated ambient temperature is above the required level, then the following strategy will be enabled.

A timer is incremented when the engine speed and airflow are above pre-determined thresholds. A normal judgment is made if the engine coolant temperature reaches the value for closed loop fuelling before the timer reaches the fault threshold.

A failure judgment is made if the timer reaches the fault threshold before the engine coolant temperature reaches the value required for closed loop fuelling.

The fault threshold is obtained from a look up table that is mapped against the lowest engine coolant temperature measured whilst the check is in progress.

The flow chart shown below explains the operation of this diagnostic.

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Closed Loop Enable Temperature P0125

Monitor execution 160 msec

Start

Reset Min_ECT and Load Timer

No Estimated ambient temp >= threshold?

Yes

Min_ECT = minimum of ECT and Min_ECT

No Look up Judgment Time from Min_ECT dependent table

Speed & Load Conditions for Closed Loop Enable Temperature Check Engine Load >= threshold Engine speed >= threshold

Speed & load conditions satisfied for closed loop enable check?

Yes

Increment Load Timer

No

Load Timer > Judgment Time?

Yes

Yes

ECT < closed Loop Enable temperature?

Set Closed Loop Enable Temperature failure judgment

No

Set Closed Loop Enable Temperature normal judgment

End

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5.6.7 Highest Minimum Enable Temperature Achieved - P0126 This monitor operates once per drive cycle and checks that the engine coolant temperature reached the highest minimum enable temperature for other diagnostic functions.

The diagnostic calculates the difference between the measured engine coolant temperature and an estimated temperature that is derived from a model. This error between the two temperatures is then accumulated. The model used to calculate the estimated engine coolant temperature has look-up tables that use a number of engine and vehicle parameters (engine speed, engine airflow, vehicle speed and the difference between estimated ambient temperature and engine coolant temperature) to derive compensation values which are added or subtracted from the estimated engine coolant temperature as appropriate.

An after start counter is also included and the estimated engine coolant temperature is taken as the measured engine coolant temperature for a calibrated time following engine start (this time is dependent on the starting engine coolant temperature) to overcome second order effects which introduce inaccuracy into the estimate of engine coolant temperature.

A normal judgment is made if the measured engine coolant temperature reaches 80 degC and the accumulated error is not above the failure threshold. A failure judgment is made if the accumulated error equals or exceeds a calibrated fault threshold before the measured engine coolant temperature reaches 80 degC, provided the vehicle has spent less than a calibrated time at idle and the mean engine airflow during the monitoring period is within a calibrated window.

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Flow Chart of Highest Minimum Enable Temperature Achieved Monitor

Initialise and execute this section every 1280 ms

Estimated coolant temp = Actual temp Accumulated error = 0

Entry Conditions: Estimated Amb. Temp within window ECT at engine start within window Engine Speed above threshold Mass Airflow above threshold Time after start above a threshold ECT - Est. Amb. Temp at Start within window

No Entry conditions met?

Yes

Input Data for ECT Estimation: 1. Evaluate increase in estimated coolant temp and add to estimate.

2. Evaluate error between estimated coolant temp and actual, and add this to the error accumulator.

ECT Vehicle Speed Idle Flag Fuel Cut Enabled Mass Airflow Engine Speed Estimated Ambient Temperature

Fault Decision: ECT less than the normal threshold Idle ratio less than a threshold Mean Mass Airflow within window Accumulated error greater than the fault threshold (calibrated against start temp)

Are all fault conditions true?

Yes Failure judgment

No

No Is the ECT greater than the normal threshold?

Yes

Normal judgment

End

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Cooling System Monitoring Component/ System

Fault Code

Engine Coolant Temperature Sensor ECT high input P0118 ECT low input P0117 (hlect)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Out of range check Out of range check

ECT voltage (> 4.59 V) ECT voltage (< 0.07 V)

< -40 degC > 150 degC

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P0117 P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P0118 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) ECT range / P0116 performance (cltd)

Coolant temperature stuck

ECT voltage change

<= 0.05 V

Engine speed Delta Engine Coolant Temp 2 Or IAT at powerdown - IAT at ignition on

>= 400 rpm >= 45 degC

60 s

2 Drive Cycles

>= 250 degC

Fault Codes that disable P0116 P2183 (hi) P2183 (lo) P2183 (stk) P1603 P0606 (cnt) (stuck) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Cooling System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

ECT range / P0116 Coolant temperature biased performance at start (cltr)

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

ECT - (maximum of RH IAT average & ECT2 average) Or (Minimum of RH IAT average & ECT2 average) - ECT

> 20 degC

Engine off time Difference between maximum of RH IAT average & ECT2 average, and minimum of RH IAT average & ECT2 average Engine condition Block Heater

28800 <= soak time < 3930000 s <= 20 degC

> 20 degC

Time Required

MIL 2 Drive Cycles

Has been stopped Not detected (see table for conditions)

Fault Codes that disable P0116 P0113 P0112 P00AD P00AC P0118 P0117 P0643 (range performance) P0642 P2610 P2610 (mis) P2610 (hi) P2610 (lo) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Cooling System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Engine Coolant Temperature Sensor ECT range / P0125 performance (clti)

Time to CL A/F control

ECT/time (s)

See

Engine speed

>= 400 rpm

2 Drive

enable temp. (-15 degC)

table

Mass airflow Estimated ambient temperature

>= 3 g/s >= -40 degC

Cycles

Time Required

MIL

Fault Codes that disable P0125 P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0351 P2300 P2301 P0352 P2303 P2304 P0353 P2306 P2307 P0354 P2309 P2310 P0355 P2312 P2313 P0356 P2315 P2316 P0357 P2318 P2319 P0358 P2321 P2322 P0116 (hi) P0116 (lo) P0116 (stk) P0236 P0101 P010B P115D P0106 P02EE (bv) P02EF (bv) P02F0 (bv) P02F1 (bv) P02F2 (bv) P02F3 (bv) P02F4 (bv) P02F5 (bv) P02EE (hl) P02EF (hl) P02F0 (hl) P02F1 (hl) P02F2 (hl) P02F3 (hl) P02F4 (hl) P02F5 (hl) P0262 (hb) P0265 (hb) P0268 (hb) P0271 (hb) P0274 (hb) P0277 (hb) P0280 (hb) P0283 (hb) P0261 (lb) P0264 (lb) P0267 (lb) P0270 (lb) P0273 (lb) P0276 (lb) P0279 (lb) P0282 (lb) P0262 (hg) P0265 (hg) P0268 (hg) P0271 (hg) P0274 (hg) P0277 (hg) P0280 (hg) P0283 (hg) P0261 (lg) P0264 (lg) P0267 (lg) P0270 (lg) P0273 (lg) P0276 (lg) P0279 (lg) P0282 (lg) P0201 P0202 P0203 P0204 P0205 P0206 P0207 P0208 P1315 P1316 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Cooling System Monitoring Component/ System

Fault Code

Engine Coolant Temperature Sensor 2 ECT2 high input P2185 ECT2 low input P2184 (hlect2)

ECT2 range / P2183 performance (cltd2)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Out of range check Out of range check

ECT voltage (> 4.59 V) ECT voltage (< 0.073 V)

< -40 degC > 120 degC

Coolant temperature stuck

ECT voltage change

<= 0.04 V

ECT2 - (maximum of RH IAT average & ECT average) Or (Minimum of RH IAT average & ECT average) - ECT2

> 20 degC

ECT2 range / P2183 Coolant temperature biased performance at start (cltr2)

Land Rover

> 20 degC

Secondary Parameter

Enable Conditions

Time Required

Ignition on

2.21 s

MIL

2 Drive Cycles Fault Codes that disable P2184 P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P2185 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) Engine speed >= 600 rpm 120 s 2 Drive Cycles Delta Engine Coolant Temp >= 10 degC Engine Coolant Temperature >= 80 degC Fault Codes that disable P2183 P0116 (hi) P0116 (lo) P0116 (stk) P2183 (hi) P2183 (lo) (stuck) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) Engine off time 28800 <= soak time < 3930000 s 2 Drive Cycles Difference between maximum of <= 20 degC RH IAT average & ECT average, and minimum of RH IAT average & ECT average Engine condition Has been stopped Block Heater Not detected (see table for conditions) Fault Codes that disable P2183 P2185 P2184 P0116 (hi) P0116 (lo) P0116 (stk) P2183 (range performance) (stk) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Cooling System Monitoring Component/ System

Fault Code

Thermostat Range or Performance (thms)

P0128

Monitoring Strategy Description

Malfunction Criteria

Thermostat leakage Engine Out Coolant determined by comparing the Temperature - Radiator Outlet Coolant Temperature measured temperature drop across the radiator with the expected value during engine warm up

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

< see table

Estimated ambient temperature ECT@ start Mass airflow Engine speed Time after start (ECT - Est Amb Temp) @ start

-20 <= T < 50 degC -40 <= ECT < 60 degC >= 0 g/s >= 400 rpm >= 10 s -40 <= T < 120 degC

See table (from 120 To 180 s)

2 Drive Cycles

Fault Codes that disable P0128 P0118 P0117 P0643 P0642 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P2183 (hi) P2183 (lo) P2183 (stk) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Revision Date: November 2010

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Cooling System Monitoring Component/ System Coolant Temperature Performance (cltl)

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Accumulated difference P0126 Comparison of actual warm up profile with estimated. between estimated ECT and Fault flagged when actual ECT is too large. accumulated difference between actual and estimated coolant reaches threshold, without actual ECT reaching 80degC

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

>= see table

Estimated ambient temperature ECT@ start Mass airflow Engine sped Time after start (ECT - Est ATT) @ start Mean MAF value Proportion of time at idle

-20 <= T < 50 degC -40 <= ECT < 70 degC >= 0.5 g/s >= 400 rpm >= 0 s -40 <= T < 120 degC 20 <= MAF <= 175 g/s <= 50 %

2.56 s

2 Drive Cycles

Fault Codes that disable P0126 P0118 P0117 P0643 P0642 P0073 P0072 P0351 P2300 P2301 P0352 P2303 P2304 P0353 P2306 P2307 P0354 P2309 P2310 P0355 P2312 P2313 P0356 P2315 P2316 P0357 P2318 P2319 P0358 P2321 P2322 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0071 (hi) P0071 (lo) P2183 (hi) P2183 (lo) P2183 (stk) P02EE (bv) P02EF (bv) P02F0 (bv) P02F1 (bv) P02F2 (bv) P02F3 (bv) P02F4 (bv) P02F5 (bv) P02EE (hl) P02EF (hl) P02F0 (hl) P02F1 (hl) P02F2 (hl) P02F3 (hl) P02F4 (hl) P02F5 (hl) P0262 (hb) P0265 (hb) P0268 (hb) P0271 (hb) P0274 (hb) P0277 (hb) P0280 (hb) P0283 (hb) P0261 (lb) P0264 (lb) P0267 (lb) P0270 (lb) P0273 (lb) P0276 (lb) P0279 (lb) P0282 (lb) P0262 (hg) P0265 (hg) P0268 (hg) P0271 (hg) P0274 (hg) P0277 (hg) P0280 (hg) P0283 (hg) P0261 (lg) P0264 (lg) P0267 (lg) P0270 (lg) P0273 (lg) P0276 (lg) P0279 (lg) P0282 (lg) P0201 P0202 P0203 P0204 P0205 P0206 P0207 P0208 P0171 P0172 P0174 P0175 P0420 P0430 P0026 (hi) P0026 (lo) P0028 (hi) P0028 (lo) P0011 P0012 P0016 P0021 P0022 P0018 P0027 (hi) P0027 (lo) P0029 (hi) P0029 (lo) P0014 P0015 P0017 P0024 P0025 P0019 U0121 P2601 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0500 (ud) P0500 (qf) P0500 (ud_s) P0500 (qf_s)

Land Rover

Revision Date: November 2010

Page 104 of 222

Cooling System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

P0480 P0691 P0692

Open circuit Short to ground Short to battery

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

5.0 s

2 Drive Cycles

1.0 s

2 Drive Cycles

Radiator Cooling Fan Oil Control Solenoid (arvfan) Circuit continuity

Fault Codes that disable fan None speed sensor monitoring Radiator Cooling Fan Speed too High (vcush) P0493

Fan speed too high

Fan speed

> 4000 rpm

Engine speed Engine Coolant Temperature Engine state

600 <= RPM <= 7000 rpm -40 <= ECT <= 120 degC Not at Idle

Fault Codes that disable fan None speed rationality monitoring

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

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Revision Date: November 2010

Page 105 of 222

Engine Coolant Temperature Sensor Time to closed loop enable temperature (TBD_CLTI_JUDGETIMC) – P0125 Min. Clnt Temp (deg C)

-40.00

-30.00

-23.50

-23.30

-10.00

0.00

10.00

20.00

30.00

40.00

50.00

60.00

80.00

Time (s)

300.0

300.0

300.0

120.0

120.0

120.0

120.0

120.0

120.0

120.0

120.0

120.0

120.0

Thermostat Monitor Fault Threshold (MBD_THMS_DELTA_FALT) – DTC P0128 Coolant Temperature (degC)

Engine Coolant Temperature at Engine Start (degC)

-40.0

-19.9

0.3

19.8

39.9

60.0

75.1

80.1

80.8

-40.0

0.00

10.00

15.00

20.00

25.00

27.00

30.00

30.00

-20.00

-19.9

0.00

0.00

10.00

15.00

18.00

23.00

27.00

30.00

-20.00

0.3

0.00

0.00

0.00

10.00

15.00

20.00

25.00

28.00

-20.00

19.8

0.00

0.00

0.00

0.00

10.00

18.00

23.00

25.00

-20.00

39.9

0.00

0.00

0.00

0.00

0.00

10.00

20.00

22.00

-20.00

60.0

0.00

0.00

0.00

0.00

0.00

0.00

10.00

16.00

-20.00

70.1

0.00

0.00

0.00

0.00

0.00

0.00

0.00

10.00

-20.00

80.1

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

-20.00

80.8

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

-20.00

Thermostat Monitor Fault Detecttion Time (seconds) (MBD_THMS_FALTLEVL) – DTC P0128 Estmated Ambient Temperature (degC)

Engine Coolant Temperature at Engine Start (degC)

Land Rover

-40.0

-29.9

-19.9

-9.8

0.3

9.7

19.8

29.8

39.9

-40.0

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

-19.9

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

0.3

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

19.8

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

39.9

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

60.0

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

70.1

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

80.1

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

80.8

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

Revision Date: November 2010

Page 106 of 222

Thermostat Monitor Fault Detecttion Time (seconds) (MBD_THMS_FALTLEVL) – DTC P0128 Estmated Ambient Temperature (degC)

Coolant Temperature at Engine Start (degC)

-40.0

-29.9

-19.9

-9.8

0.3

9.7

19.8

29.8

39.9

-40.0

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

-19.9

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

0.3

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

19.8

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

39.9

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

60.0

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

70.1

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

80.1

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

80.8

180.5

180.5

180.5

170.2

160.0

149.8

139.5

130.6

120.3

Time to Temperature Monitor Fault Limit (accumulated difference) (MBD_CLTL_FALTLEVL) – DTC P0126 Estimated Ambient Temperature (degC)

Coolant Temperature at Engine Start (degC)

-40.0

-10.0

0.0

10.0

20.0

30.0

40.0

50.0

119.4

-40.0

7500

7500

5500

4500

3500

3000

2000

1500

10000

50.0

3750

3750

2750

2250

1750

1500

1000

750

10000

60.5

3000

3000

2375

1875

1375

1125

750

500

10000

116.1

10000

10000

10000

10000

10000

10000

10000

10000

10000

116.8

10000

10000

10000

10000

10000

10000

10000

10000

10000

117.5

10000

10000

10000

10000

10000

10000

10000

10000

10000

118.2

10000

10000

10000

10000

10000

10000

10000

10000

10000

118.9

10000

10000

10000

10000

10000

10000

10000

10000

10000

119.6

10000

10000

10000

10000

10000

10000

10000

10000

10000

5.6.8 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. Ensure that the engine has been stopped for at least 8 hours before engine start and less than 50% of the drive is at idle.

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Revision Date: November 2010

Page 107 of 222

5.7

Positive Crankcase Ventilation (PCV) System Monitoring

5.7.1 Description The crankcase ventilation valve is incorporated in the right hand cam cover.

Disconnection of the hose that runs between the valve and the intake manifold will result in one of the following: •

The engine will become very unstable at idle with a tendency to stall

•

The OBD system will detect a fuel system fault due to the un-metered air that enters the intake manifold

•

The OBD system will store a specific crankcase ventilation fault code P2279

Fault code P2279 is set if the measured lambda values for both cylinder banks simultaneously indicate an excessively lean condition, when all of the following entry conditions are true:

Land Rover

•

More than a pre-determined time has elapsed since engine start

•

The engine speed is below a threshold, or idle speed control is active

•

Closed loop fuel control is active

•

The pre-catalyst Oxygen sensors are active

•

The coolant temperature is within a window

•

The atmospheric pressure is within a window

•

Fuel cut off is not active

•

A pre-determined time has elapsed since fuel cut off was last active

•

The fuel tank level is above a threshold

Revision Date: November 2010

Page 108 of 222

5.7.2 PCV Valve Location and Hose Layout for the Naturally Aspirated Engine

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Revision Date: November 2010

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5.7.3 PCV Valve Location and Hose Layout for the Supercharged Engine

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Revision Date: November 2010

Page 110 of 222

PCV System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

PCV Disconnect Test P2279 Lambda values excessively lean (Idle check at low on both banks altitude) (pcvd)

Malfunction Criteria

Threshold value

Measured Lambda x A/F Compensation for both Cylinder banks

> 1.80

Secondary Parameter

Enable Conditions

Time Required

Afterstart >= 2.1 s 5.04 s 2 Drive Engine speed <= 1500 rpm or in idle speed control Cycles Fuel Control In closed loop u/s HO2S Sensors Activated Engine Coolant Temperature -30 <= T < 119.4 degC Atmospheric pressure 84.5 <= Baro < 107 kPa Fuel cut off Not active Time since last fuel cut > 5.04 s Fuel Level >= 3.0% Fault Codes that disable P2229 P2228 P0103 P0102 P010D P010C P0238 P0237 P2279 P0108 P0107 P0118 P0117 P0643 P0642 P0031 (op) P0031 (gs) P0032 P0051 P0051 (gs) P0052 P2301 P0352 P2303 P2304 P0353 P2306 P2307 P0354 P2309 P2310 P0355 P2312 P2313 P0356 P2315 P2316 P0357 P2318 P2319 P0358 P2321 P2322 P0444 P0458 P0459 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P02EE (bv) P02EF (bv) P02F0 (bv) P02F1 (bv) P02F2 (bv) P02F3 (bv) P02F4 (bv) P02F5 (bv) P02EE (hl) P02EF (hl) P02F0 (hl) P02F1 (hl) P02F2 (hl) P02F3 (hl) P02F4 (hl) P02F5 (hl) P0262 (hb) P0265 (hb) P0268 (hb) P0271 (hb) P0274 (hb) P0277 (hb) P0280 (hb) P0283 (hb) P0261 (lb) P0264 (lb) P0267 (lb) P0270 (lb) P0273 (lb) P0276 (lb) P0279 (lb) P0282 (lb) P0262 (hg) P0265 (hg) P0268 (hg) P0271 (hg) P0274 (hg) P0277 (hg) P0280 (hg) P0283 (hg) P0261 (lg) P0264 (lg) P0267 (lg) P0270 (lg) P0273 (lg) P0276 (lg) P0279 (lg) P0282 (lg) P0201 P0202 P0203 P0204 P0205 P0206 P0207 P0208 P0132 P0131 P0152 P0151 P0133 P0133 (dl) P0153 P0153 (dl) P0134 P0154 P0137 P0138 P0157 P0158 P0140 P0160 P0139 P0159 P0441 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

Land Rover

MIL

Revision Date: November 2010

Page 111 of 222

5.7.4 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. It isn't essential that this is from a cold start.

5.8

Crankshaft Position Sensor

5.8.1 Description The crankshaft position sensor is checked for loss of signal during engine cranking and engine running conditions. When the appropriate entry conditions have been met, a loss of sensor pulses for longer than a predefined time will register a fault. If the fault is registered on two drive cycles the MIL will illuminate.

Additionally, if the number of crankshaft position sensor pulses is incorrect by more than one pulse in any one engine revolution then a fault event is recorded. If the number of fault events exceeds the limit without the engine synchronising, a crankshaft position sensor range/performance fault is registered. If the fault is registered on two drive cycles the MIL will illuminate.

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Revision Date: November 2010

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Crankshaft Position Sensor Monitoring Component/ System

Fault Code

Malfunction P0335 (crnk_1)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

1) Crank sensor signal when engine cranking

Number of crank sensor pulses Seen

<1 Or > 110

Malfunction P0335 (crnk_2)

2) Crank sensor during engine running

Number of intervals with no crank target edges detected

Range / P0336 Performance (crnk_3)

Crank sensor pulses counted between missing teeth

Number of pulses

Secondary Parameter Delay Counter (Increments if: Ignition On Starter relay Off Battery voltage >= 10.5 V) Battery voltage Cranking Cam pulses seen

>= 10

Not equal To 58 For >= 10 revs

Enable Conditions

Time Required

MIL

>= 0 s

0.024 s

2 Drive Cycles

0.24 s

2 Drive Cycles

>= 8 V In progress >= 2

Engine speed

>= 500 rpm for >= 0.24s

Reverse gear Engine speed

Not selected for at least 0 s >= 575 rpm < 0.0087 s

30 degree crank rotation time

2 Drive Cycles

P0643 P0642 P0340 (strt) P0340 (run) P0341 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 Fault Codes that disable Crankshaft Sensor (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 monitoring (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.8.2 Drive Cycle Information Start the engine and allow to idle for at least 30 seconds.

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5.9

Camshaft Position Sensors

5.9.1 Description Each camshaft is fitted with a camshaft position sensor. The camshaft position sensors are checked for loss of signal during engine running conditions. When the appropriate entry conditions have been met, a loss of the camshaft position sensor pulses for longer than a predefined time will register a fault. If the fault is registered on two drive cycles the MIL will illuminate.

Additionally if a camshaft position sensor pulse is not detected between the crankshaft sensor missing teeth on more than four occasions a fault event is recorded. If the fault is registered on two drive cycles the MIL will illuminate.

There is also a crankshaft / camshaft alignment check. The cam adaption valve is compared to the previous trip value. If the difference between the two adaptions differs by more than a calibratable value a fault will be logged and the MIL will illuminate.

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Camshaft Position Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Intake Camshaft Sensors Bank A malfunction P0340 1) cam sensor at engine start Bank B malfunction P0345 (cammstaa/camstab) Bank A malfunction P0340 2) cam sensor during engine Bank B malfunction P0345 running (camelea/b)

Bank A range / P0341 Detection of cam pulse over 2 crankshaft revolutions performance Bank B range / P0346 performance (camrpa/b)

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Number of cam pulses seen

<= 0

Battery voltage Cranking Battery voltage

>= 8.0 V Active < 10.5 V

0.800 s

2 Drive Cycles

No cam pulses seen

No pulse

Battery voltage Engine speed Cranking Crank Sensor status Engine speed (assessed over 30 deg CA)

>= 8.0 V > 1500 rpm Not active No fault present > 1500 rpm

5 revs

2 Drive Cycles

Number of cam pulses seen

Not equal

Crank Sensor status

No fault present

5 revs

2 Drive

to 4 or 0

Battery voltage Engine running cam sensor entry conditions true

>= 8.0 V > 100 revs

Cycles

Fault Codes that disable Intake P0643 P0642 P0335 (_1) P0335 (_2) P0336 P0335 Camshaft Sensor monitoring (_1s) P0335 (_2s) P0336 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0616 P0615 P0617

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Camshaft Position Sensor Monitoring Component/ System

Fault Code

Exhaust Camshaft Sensors Bank A malfunction P0365 Bank B malfunction P0390 (caeelea/b)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Cam sensor during engine running

No cam pulses seen

No pulse

Battery voltage Engine speed Cranking Crank Sensor status Engine speed (assessed over 30 deg CA)

>= 8.0 V > 500 rpm Not active No fault present > 500 rpm

5 revs

2 Drive Cycles

Number of cam pulses seen

Not equal

Crank Sensor status

No fault present

5 revs

2 Drive

to 4 or 0

Battery voltage

>= 8.0 V

Engine running cam sensor entry conditions true

> 100 revs

Bank A range / P0366 Detection of cam pulse performance Bank B range / P0391 over 2 crankshaft revolutions performance (caerpa/b)

Cycles

Fault Codes that disable P0643 P0642 P0335 (_1) P0335 (_2) P0336 P0335 Exhaust Camshaft Sensor (_1s) P0335 (_2s) P0336 (sub) P1603 P0606 (cnt) monitoring P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0616 P0615 P0617

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Camshaft Position Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Cam and Crank Alignment Check Intake position fault Bank A P0016 Camshaft adapted position Bank B P0018 compared to stored value Exhaust position fault Bank A P0017 Bank B P0019

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Difference too Great (+/-) (i.e. more than single tooth)

> 11 deg CA

Atmospheric pressure Estimated ambient temperature Engine Coolant Temperature Camshaft adaption

>= 68.0 kPa >= -10 degC >= -10 degC Completed (on this trip)

Time Required

MIL

1 Drive Cycle

Fault Codes that disable Bank A P0010 P2088 P2089 P0335 (_1) P0335 (_2) P0336 Intake Monitoring P0340 (strt) P0340 (run) P0341 P0335 (_1s) P0335 (_2s) P0336 (sub) P0340 (strt_s) P0340 (sub) P0341 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) Fault Codes that disable Bank B P0020 P2092 P2093 P0335 (_1) P0335 (_2) P0336 Intake Monitoring P0345 (strt) P0345 (run) P0346 P0335 (_1s) P0335 (_2s) P0336 (sub) P0345 (strt_s) P0345 (run_s) P0346 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) Fault Codes that disable Bank A P0013 P2090 P2091 P0335 (_1) P0335 (_2) P0336 Exhaust Monitoring P0365 (run) P0366 P0335 (_1s) P0335 (_2s) P0336 (sub) P0365 (run_s) P0366 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub

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Camshaft Position Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable Bank B P0023 P2094 P2095 P0335 (_1) P0335 (_2) P0336 Exhaust Monitoring P0390 (run) P0391 P0335 (_1s) P0335 (_2s) P0336 (sub) P0390 (run_s) P0391 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

Conditions for Setting "Camshaft Adaption" - Entry Condition for P0016, P0017, P0018 and P0019 - Cam and Crank Alignment Check When the following conditions are satisfied, then the condition "Camshaft Adapted" will be confirmed: •

Camshaft position is stable, for this to be true the smoothed change in camshaft position must less than or equal to 0.5°CA determined between camshaft sensor target edges

•

Base control mode is active for 30 camshaft edge counts. There are 3 camshaft sensor target edges per 720°CA, so this takes 20 engine revolutions

•

Engine speed is between 400 and 2200 rpm

5.9.2 Drive Cycle Information Start the engine and allow to idle for at least 30 seconds.

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5.10 Camshaft Profile Switching (CPS) — Naturally Aspirated Engine Only 5.10.1 Schematic and Operation The intake camshafts of the naturally aspirated engine have high lift and low lift modes of operation. This is achieved by providing two sets of cam lobes for each intake valve and splitting the tappets into two sections. Oil pressure operates on a pin in each tappet to engage high lift.

The oil is controlled by a separate ECM commanded solenoid valve for each bank of cylinders. The transition from low to high lift happens at approximately 2,400 rpm.

Centre cam - provides low lift operation Outer cams - provide high lift operation

Pin - Oil pressure used to switch tappet between high and low lift modes

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5.10.2 Diagnosis Electrical Diagnosis Electrical continuity problems with the two oil control solenoids are reported with the following DTCs:

Open Circuit - Bank A

P001A

Short Circuit to Ground - Bank A Short Circuit to Battery - Bank A Open Circuit - Bank B

P001B

Short Circuit to Ground - Bank B Short Circuit to Battery - Bank B

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P001C P001D P001E P001F

Intake (A) Cam Profile Control Circuit / Open (Bank A) Intake (A) Cam Profile Control Circuit Low (Bank A) Intake (A) Cam Profile Control Circuit High (Bank A) Intake (A) Cam Profile Control Circuit / Open (Bank B) Intake (A) Cam Profile Control Circuit Low (Bank B) Intake (A) Cam Profile Control Circuit High (Bank B)

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Functional Diagnosis - DTCs P003C and P003E There is no reliable means of diagnosis at the switching point, so an intrusive diagnostic is used. When the entry conditions are true, the diagnostic forces one cylinder bank into high lift mode and holds it there for a period of approximately 1800ms. The difference in lambda compensation between the 2 cylinder banks is then used as a measure of the CPS switching or not switching.

Diagnostic Measurement: The ratio of lambda corrections for the two cylinder banks is calculated prior to the intrusive test and again during the intrusive test. The difference between the two measurements is the “deflection”.

Fault Determination: If the deflection is less than 5% the diagnostic flags a fault. Each bank is tested separately and two failure modes can be diagnosed for each cylinder bank: Stuck in low lift (unable to be switched to high lift) Stuck in high lift (no lambda deflection when high requested)

Camshaft Profile Switching Monitoring Component/ System

Fault Code

Circuit continuity Bank A intake P001A (arcp1) P001B P001C Bank B intake P001D (arcp2) P001E P001F

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Open circuit Short to ground Short to battery Open circuit Short to ground Short to battery

Enable Conditions

Time Required

MIL

1.52 s

2 Drive Cycles

Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 Camshaft Profile Switching (ramint_s) P0605 (romint) P0605 (romint_s) P0604 Circuit Monitoring (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600

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Camshaft Profile Switching Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Operation check Bank A intake P003C The functional response of each Camshaft Profile Bank B intake P003E Switching solenoid valve (one (cps) per bank for the intake camshafts) is checked by separately requesting an intrusive lift for each bank during light load conditions.

The Lambda response due to this intrusive test is monitored and if the Lambda deviation is sufficient, then Camshaft profile Switching operation is assessed as having occurred correctly. If insufficient Lambda deviation occurs, then Camshaft profile Switching operation did not occur correctly.

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Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

Test complete and average test ratio

<= 1.05

After start time Atmospheric pressure Engine Coolant Temperature Engine speed Speed vs Oil temp

>= 60 s >= 68 kPa >= 70 degC < 5000 rpm >= 0.5 (see table for NEOIL setting)

Following 3 conditions must have been true for at least 0.5 seconds: A/F regulator output 0.78 <= A/F <= 1.20 Target Lambda 0.9 <= lambda <= 1.1 Actual Lambda 0.9 <= lambda <= 1.1 for at least 0.5 s Lambda delta <= 2 for at least 0.0 s Lambda target error <= 0.2 Engine speed change >= 0 rpm/20ms Camshaft profile Switching Not for at least 7s operation Throttle Pedal Operation Check: Has been > 10.0 % Is now <= 7% Time to move between two values <= 3.0s CPS test must complete in <= 6.0 s A/F feedback control Operating Engine load < 1 g/s Vehicle speed >= 3.1 mph Fuel Cut Not occuring Variable Valve Timing angle 0 <= VVT angle <= 10 deg CA Camshaft Profile Switching Not in shift mode

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MIL

2 Drive Cycles

Camshaft Profile Switching Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

None of the following 3 conditions must have been true within the last 1.5s Intake VVT change > 5 deg CA/20ms Exhaust VVT change > 5 deg CA/20ms Pedal operation check False Stability check, none of the following must have been true within the last 0.5s Target Lambda change >= 0.04/20ms A/F regulator output change >= 0.03/20ms Intake VVT change > 90 deg CA/20ms Exhaust VVT change > 90 deg CA/20ms Intake VVT difference to target >= 90 deg CA Exhaust VVT difference to target >= 90 deg CA Engine load change >= 100 g/s/20ms Engine speed change >= 200 rpm Purge change >= 0.5/20ms Purge flow >= 10 Purge concentration >= 3 Injection Time <= 0.5 ms

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MIL

Camshaft Profile Switching Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Fault Codes that disable P0103 P0102 P010D P010C P0238 P0237 P0108 Camshaft Profile Switching P0107 P0118 P0117 P0643 P0642 P0010 P2088 P2089 Monitoring P0020 P2092 P2093 P0013 P2090 P2091 P0023 P2094 P2095 P001A P001B P001C P001D P001E P001F P0031 (op) P0031 (gs) P0032 P0051 P0051 (gs) P0052 P0351 P2300 P2301 P0352 P2303 P2304 P0353 P2306 P2307 P0354 P2309 P2310 P0355 P2312 P2313 P0356 P2315 P2316 P0357 P2318 P2319 P0358 P2321 P2322 P0444 P0458 P0459 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P0106 P02EE (bv) P02EF (bv) P02F0 (bv) P02F1 (bv) P02F2 (bv) P02F3 (bv) P02F4 (bv) P02F5 (bv) P02EE (hl) P02EF (hl) P02F0 (hl) P02F1 (hl) P02F2 (hl) P02F3 (hl) P02F4 (hl) P02F5 (hl) P0262 (hb) P0265 (hb) P0268 (hb) P0271 (hb) P0274 (hb) P0277 (hb) P0280 (hb) P0283 (hb) P0261 (lb) P0264 (lb) P0267 (lb) P0270 (lb) P0273 (lb) P0276 (lb) P0279 (lb) P0282 (lb) P0262 (hg) P0265 (hg) P0268 (hg) P0271 (hg) P0274 (hg) P0277 (hg) P0280 (hg) P0283 (hg) P0261 (lg) P0264 (lg) P0267 (lg) P0270 (lg) P0273 (lg) P0276 (lg) P0279 (lg) P0282 (lg) P0201 P0202 P0203 P0204 P0205 P0206 P0207 P0208 P0335 (_1) P0335 (_2) P0336 P0340 (strt) P0340 (run) P0341 P0345 (strt) P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P0335 (_1s) P0335 (_2s) P0336 (sub) P0340 (strt_s) P0340 (sub) P0341 (sub) P0345 (strt_s) P0345 (run_s) P0346 (sub) P0365 (run_s) P0366 (sub) P0390 (run_s) P0391 (sub) P0132 P0131 P0152 P0151 P0133 P0133 (dl) P0153 P0153 (dl) P0134 P0154 P2105 P0026 (hi) P0026 (lo) P0028 (hi) P0028 (lo) P0011 P0012 P0016 P0021 P0022 P0018 P0027 (hi) P0027 (lo) P0029 (hi) P0029 (lo) P0014 P0015 P0017 P0024 P0025 P0019 P0441 P018B P008B P008A P0191 P0088 P0087 U0300 P1603 P0610 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2123 P2122 P2128 P2127 P2138 P2138 (sub) P2118 P2119 (cnt)

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If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

Entry Condition for Camshaft Profile Switching Functional Diagnostic (MBD_CPS_NEOIL) – DTCs P003C and P003E Engine Speed (rpm)

Diagnostic runs when in highlighted region (setting >= 0.5)

999

1000

1100

1200

1400

1600

2399

2400

100

0.00

1.00

1.00

1.00

1.00

1.00

1.00

0.00

105

0.00

0.00

1.00

1.00

1.00

1.00

1.00

0.00

110

0.00

0.00

0.00

1.00

1.00

1.00

1.00

0.00

115

0.00

0.00

0.00

0.00

1.00

1.00

1.00

0.00

120

0.00

0.00

0.00

0.00

0.00

1.00

1.00

0.00

121

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.00

Engine Oil Temperature (degC)

5.10.3 Drive Cycle Information Please refer to the relevant part of the "Readiness Setting" section.

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5.11 Cold Start Emission Reduction Monitoring 5.11.1 Description When starting a cold engine, catalyst light-off times can be improved by generating high engine out energy. The energy is mainly dependent on exhaust temperature and mass flow rate. This is achieved by retarding the ignition timing and increasing engine idle speed as well as adjusting fuel injection and valve timing. Cold Start Monitoring ensures that the intended catalyst light-off times are being achieved. If the intended control is not achieved, then a DTC will be set and the MIL illuminated.

Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Engine Speed Performance Too low P0506 Too high P0507 (clne)

Monitoring Strategy Description

Malfunction Criteria

Actual engine idle speed compared to target value

Engine speed lower than expected by Engine speed higher than expected by

Threshold value

Secondary Parameter

The following 8 conditions true: for >= 3.0 s Afterstart time 0.0 <= time <= 180.0 s Vehicle speed <= 6.2 mph >= 200 rpm Low volatility gasoline <= 50% compensation Idle speed increase for catalyst >= 10 rpm heating Idle speed control Active Gearshift (D to N or P) Not occurring Brake switch state change Not occurring Change in fan drive signal <= 100%/160ms

Time Required

MIL

5.0 s

2 Drive Cycles

>= 200 rpm

Afterstart time Atmospheric pressure Engine Coolant Temperature Estimated ambient temperature

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Enable Conditions

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>= 5.0 s >= 68.0 kPa -10.0 <= ECT <= 80.0 degC >= -15 degC

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Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable Cold P2229 P2228 P0113 P0112 P00AD P00AC P007D Start Engine Speed P007C P0103 P0102 P010D P010C P0118 P0117 Performance Monitoring P0643 P0642 P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0507 P0506 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2119 (dif) P2119 (dif_h) P2118 P2119 (cnt) P0123 P0122 P0223 P0222 P0121 P2135 (dif) P2135 (dif_s)

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Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Ignition Timing P050B Performance

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Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

At every TDC when catalyst heating is active the requested Ignition timing is compared to the actual ignition timing.

The actual timing is determined by monitoring the coil drivers relative to the crankshaft position Any positve (advanced) or negative (retarded) deviation is separately summed. If either sum exceeds a threshold, then a fault will be detected.

Sum of invidual positive deviations or Sum of invidual negative deviations

>= 10 crank degrees >= 10 crank degrees

Battery voltage Engine speed Ignition dwell time Catalyst heating evaluation (P050E Diagnostic)

9.0 < Ubat < 16.0 V > 400 rpm > 0 ms Not complete

1360 revs (NA Engine)

2 Drive Cycles

320 revs (SC Engine)

Fault Codes that disable P050B P0113 P0112 P00AD P00AC P007D P007C P0103 P0102 P010D P010C P0193 P0192 P0351 P2300 P2301 P0352 P2303 P2304 P0353 P2306 P2307 P0354 P2309 P2310 P0355 P2312 P2313 P0356 P2315 P2316 P0357 P2318 P2319 P0358 P2321 P2322 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0335 (_1) P0335 (_2) P0336 P0340 (strt) P0340 (run) P0341 P0345 (strt) P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P0335 (_1s) P0335 (_2s) P0336 (sub) P0340 (strt_s) P0340 (sub) P0341 (sub) P0345 (strt_s) P0345 (run_s) P0346 (sub) P0365 (run_s) P0366 (sub) P0390 (run_s) P0391 (sub) P1315 P1316 P018B P008B P008A P0191 P0088 P0087 P0507 (cser) P0506 (cser) P052A P052B P052C P052D P054A P054B P054C P054D P0149 (ma_hi) P0149 (ma_lo) P0148 (mt_hi) P0148 (mt_lo) P0149 (sa_hi) P0149 (sa_lo) P0148 (st_hi) P0148 (st_lo) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P00C6 (dual)

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Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Intake VVT Performance Bank A - Too Advanced P052A During catalyst heating, if the Total error counter increments Bank B - Too Advanced P052C difference between the actual If actual cam position - target Variable Valve Timing Cam position position and the target Variable Valve Timing position is greater than a Fault set if total error threshold, then every 40 ms this error is added to a total.

There are separate totals for each cylinder bank for Bank A - Too Retarded P052B Total error counter increments positve (Variable Valve Bank B - Too Retarded P052D Timing too advanced) and If target cam position - actual Cam position negative (Variable Valve Fault set if total error Timing too retarded) errors.

At the completion of catalyst heating, if sufficient heating was required, then the error totals are compared with fault thresholds.

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Threshold value

Secondary Parameter

Enable Conditions

> 20 deg

Atmospheric pressure Engine Start Throttle position change Engine Coolant Temperature VVT Operating mode Accumulated heat index - checked when catalyst heating evaluation (P050E diagnostic) completes

>= 68.0 kPa Not in progress < 1 deg/40 ms for at least 5.0 s -10.0 <= ECT <= 80.0 degC 0 <= mode no. <= 5 > see table

> see table

Time Required

MIL

Depends 2 Drive on duration Cycles of catalyst heating phase

> 20 deg

> see table

Fault Codes that disable Bank A P0113 P0112 P00AD P00AC P007D P007C P0103 Cold Start Intake Variable Valve P0102 P010D P010C P0118 P0117 P0643 P0642 Timing Monitoring P0010 P2088 P2089 P001A P001B P001C P001D P001E P001F P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0340 (strt) P0340 (run) P0341 P0340 (strt_s) P0340 (sub) P0341 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P003C P003E

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Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable Bank B P0113 P0112 P00AD P00AC P007D P007C P0103 Cold Start Intake Variable Valve P0102 P010D P010C P0118 P0117 P0643 P0642 Timing Monitoring P0020 P2092 P2093 P001A P001B P001C P001D P001E P001F P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0345 (strt) P0345 (run) P0346 P0345 (strt_s) P0345 (run_s) P0346 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P003C P003E

VVT = Variable Valve Timing

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Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Exhaust VVT Performance Bank A - Too Advanced P054A During catalyst heating, if the Total error counter increments if actual cam Bank B - Too Advanced P054C difference between the actual Variable Valve Timing position position – target cam and the target Variable Valve position Timing position is greater than a Fault set if total error threshold, then every 40 ms this error is added to a total.

There are separate totals for Bank A - Too Retarded P054B each cylinder bank for positve Total error counter (Variable Valve Timing too increments advanced) and negative Bank B - Too Retarded P054D If target cam position - actual (Variable Valve Timing too Cam position retarded) errors.

At the completion of catalyst heating, if sufficient heating Fault set if total error was required, then the error totals are compared with fault thresholds.

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Threshold value

Secondary Parameter

Enable Conditions

> 20 deg

Atmospheric pressure Engine Start Throttle position change Engine Coolant Temperature VVT Operating mode Accumulated heat index - checked when catalyst heating evaluation (P050E diagnostic) completes

>= 68.0 kPa Not in progress < 1 deg/40 ms for at least 5.0 s -10.0 <= ECT <= 80.0 degC 0 <= mode no. <= 5 > see table

> see table

Time Required

MIL

Depends 2 Drive on duration Cycles of catalyst heating phase

> 20 deg

> see table

Fault Codes that disable Bank A P0113 P0112 P00AD P00AC P007D P007C P0103 Cold Start Exhaust Variable P0102 P010D P010C P0118 P0117 P0643 P0642 Valve Timing Monitoring P0013 P2090 P2091 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0365 (run) P0366 P0365 (run_s) P0366 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable Bank B P0113 P0112 P00AD P00AC P007D P007C P0103 Cold Start Exhaust Variable P0102 P010D P010C P0118 P0117 P0643 P0642 Valve Timing Monitoring P0023 P2094 P2095 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0390 (run) P0391 P0390 (run_s) P0391 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Main Injection Timing P0149 At every TDC when catalyst Performance (injm_ma) heating is active the requested main injection timing is compared to the actual main injection timing.

Theactualtimingis determined by monitoring the injector drivers relative to the crankshaft position Any positve (advanced) or negative (retarded) deviation is separately summed. If either sum exceeds a threshold, then A fault will be detected.

Main Injection Duration P0148 At every TDC when catalyst heating is active the requested Performance (injm_mt) main injection duration is compared to the actual main injection duration.

The actual duration is determined by monitoring the injector drivers relative to the crankshaft position.

Any positve (duration too long) or negative (duration too short) deviation is separately summed.

If either sum exceeds a threshold, then a fault will be. detected

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Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Sum of invidual positive deviations

> 30 crank degrees

Injection Mode Fuel cut Battery voltage Engine speed Ignition dwell time Injection mode switch Catalyst heating evaluation (P050E Diagnostic)

Split injection in progress Not present for at least 5 revs 9.0 < Ubat < 16.0 V > 400 rpm > 0 ms Not in progress Not complete

1360 revs (NA Engine)

2 Drive Cycles

Injection Mode Fuel cut Battery voltage Engine speed Ignition dwell time Injection mode switch Catalyst heating evaluation (P050E Diagnostic)

Split injection in progress Not present for at least 5 revs 9.0 < Ubat < 16.0 V > 400 rpm > 0 ms Not in progress Not complete

1360 revs (NA Engine)

or Sum of invidual negative deviations

Sum of invidual positive deviations or Sum of invidual negative deviations

> 30 crank degrees

> 0.070 s

> 0.070 s

Revision Date: November 2010

196 revs (SC Engine)

196 revs (SC Engine)

Page 133 of 222

2 Drive Cycles

Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Split (Secondary) P0149 At every TDC when catalyst Injection heating is active the requested Timing Performance split injection timing is compared (injm_sa) to the actual split injection timing.

The actual timing is determined by monitoring the injector drivers relative to the crankshaft position. Any positve (advanced) or negative (retarded) deviation is separately summed. If eithersum exceeds a threshold, then a fault will be detected.

Split (Secondary) P0148 Injection Duration Performance (injm_st)

Land Rover

At every TDC when catalyst heating is active the requested split injection duration is compared to the actual split injection duration. The actual duration is determined by monitoring the injector drivers relative to thecrankshaft position.

Any positve (duration too long) or negative (duration too short) deviation is separately summed.

If either sum exceeds a threshold, then a fault will be detected

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Sum of invidual positive deviations

> 30 crank degrees

Injection Mode Fuel cut Battery voltage Engine speed Ignition dwell time Injection mode switch Catalyst heating evaluation (P050E Diagnostic)

Split injection in progress Not present for at least 5 revs 9.0 < Ubat < 16.0 V > 400 rpm > 0 ms Not in progress Not complete

1360 revs (NA Engine)

2 Drive Cycles

Injection Mode Fuel cut Battery voltage Engine speed Ignition dwell time Injection mode switch Catalyst heating evaluation (P050E Diagnostic)

Split injection in progress Not present for at least 5 revs 9.0 < Ubat < 16.0 V > 400 rpm > 0 ms Not in progress Not complete

1360 revs (NA Engine)

or Sum of invidual negative deviations

Sum of invidual positive deviations or Sum of invidual negative deviations

> 30 crank degrees

> 0.070 s

> 0.070 s

Revision Date: November 2010

196 revs (SC Engine)

196 revs (SC Engine)

Page 134 of 222

2 Drive Cycles

Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable P0113 P0112 P00AD P00AC P007D P007C P0103 Injection Timing or Duration P0102 P010D P010C P0118 P0117 P018D P018C monitoring P0643 P0642 P0193 P0192 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P02EE (bv) P02EF (bv) P02F0 (bv) P02F1 (bv) P02F2 (bv) P02F3 (bv) P02F4 (bv) P02F5 (bv) P02EE (hl) P02EF (hl) P02F0 (hl) P02F1 (hl) P02F2 (hl) P02F3 (hl) P02F4 (hl) P02F5 (hl) P0262 (hb) P0265 (hb) P0268 (hb) P0271 (hb) P0274 (hb) P0277 (hb) P0280 (hb) P0283 (hb) P0261 (lb) P0264 (lb) P0267 (lb) P0270 (lb) P0273 (lb) P0276 (lb) P0279 (lb) P0282 (lb) P0262 (hg) P0265 (hg) P0268 (hg) P0271 (hg) P0274 (hg) P0277 (hg) P0280 (hg) P0283 (hg) P0261 (lg) P0264 (lg) P0267 (lg) P0270 (lg) P0273 (lg) P0276 (lg) P0279 (lg) P0282 (lg) P0201 P0202 P0203 P0204 P0205 P0206 P0207 P0208 P0335 (_1) P0335 (_2) P0336 P0340 (strt) P0340 (run) P0341 P0345 (strt) P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P0335 (_1s) P0335 (_2s) P0336 (sub) P0340 (strt_s) P0340 (sub) P0341 (sub) P0345 (strt_s) P0345 (run_s) P0346 (sub) P0365 (run_s) P0366 (sub) P0390 (run_s) P0391 (sub) P018B P008B P008A P0191 P0088 P0087 P0507 (cser) P0506 (cser) P052A P052B P052C P052D P054A P054B P054C P054D P050B (hi) P050B (lo) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P00C6 (dual)

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Cold Start Emission Reduction Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Catalyst Heating P050E An expected catalyst light off Evaluation time is determined at engine (tempm) start. This is dependent on engine off time and coolant temperature at engine start.

This time is modified with a correction factor for time in fuel cut or at low load.

After this expected time has elapsed, if the catalyst temperature is below a threshold for a further waiting time, then a fault is set.

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Evaluation time

> see table

Total fuel cut duration plus Time engine load <= 0.4 g/rev

<= 10 s

10 s

2 Drive Cycles

And Catalyst temperature (from model)

Fault Codes that disable Catalyst Heating Evaluation

< 350 degC

P2229 P2228 P0113 P0112 P00AD P00AC P007D P007C P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P018D P018C P0643 P0642 P0193 P0192 P0010 P2088 P2089 P0020 P2092 P2093 P0013 P2090 P2091 P0023 P2094 P2095 P001A P001B P001C P001D P001E P001F P0031 (op) P0031 (gs) P0032 P0051 P0051 (gs) P0052 P0351 P2300 P2301 P0352 P2303 P2304 P0353 P2306 P2307 P0354 P2309 P2310 P0355 P2312 P2313 P0356 P2315 P2316 P0357 P2318 P2319 P0358 P2321 P2322 P0444 P0458 P0459 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P0335 (_2) P0340 (run) P0341 P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P0335 (_2s) P0340 (sub) P0341 (sub) P0345 (run_s) P0346 (sub) P0365 (run_s) P0366 (sub) P0390 (run_s) P0391 (sub) P1315 P1316 P0171 P0172 P0174 P0175 P0026 (hi) P0026 (lo) P0028 (hi) P0028 (lo) P0011 P0012 P0016 P0021 P0022 P0018 P0027 (hi) P0027 (lo) P0029 (hi) P0029 (lo) P0014 P0015 P0017 P0024 P0025 P0019 P0441 P018B P008B P008A P0191 P0088 P0087 U0300 P2610 P2610 (mis) P2610 (hi) P2610 (lo) U0155 P0852 P0851 P0850 (cr1) P0850 (cr2) P0560 P0687 P0507 (cser) P0506 (cser) P052A P052B P052C P052D P054A P054B P054C P054D P050B (hi) P050B (lo) P0149 (ma_hi) P0149 (ma_lo) P0148 (mt_hi) P0148 (mt_lo) P0149 (sa_hi) P0149 (sa_lo) P0148 (st_hi) P0148 (st_lo) P1603 P0610 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P003C P003E P00C6 (dual)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

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Cold Start Emission Reduction Monitor Intake and Exhaust Variable Valve Timing Performance Entry Condition (TBD_CLVT_EXE & TBD_CLVE_EXE – DTCs P052A, P052B, P052C, P052D, P054A, P054B, P054C and P054D Engine Start Temperature (degC)

-40

-30

-20

-10

0

10

20

30

40

50

60

Accumulated Heat Index Threshold

500

500

500

500

500

500

500

500

400

300

200

Cold Start Emission Reduction Strategy VVT Performance Monitor Total Error Fault Threshold Intake VVT (NA Engine) (MBD_CLVT_FALTMINUS/PLUS) DTCs P052A, P052B, P052C and P052D 0 100 200 300 400 Accumulated Heat 500 600 700 800 900 1000

Cold Start Emission Reduction Strategy VVT Performance Monitor Total Error Fault Threshold Exhaust VVT (NA Engine) (MBD_CLVT_FALTMINUS/PLUS) DTCs P054A, P054B, P054C and P054D 0 100 200 300 400 Accumulated Heat 500 600 700 800 900 1000

Land Rover

Engine Coolant Temperature (degC)

-40

-30

-20

-10

0

10

20

30

40

50

60

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

Engine Coolant Temperature (degC)

-40

-30

-20

-10

0

10

20

30

40

50

60

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

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Cold Start Emission Reduction Strategy VVT Performance Monitor Total Error Fault Threshold Intake VVT (SC Engine) (MBD_CLVT_FALTMINUS/PLUS) DTCs P052A, P052B, P052C and P052D 0 100 200 300 400 Accumulated Heat 500 600 700 800 900 1000

Cold Start Emission Reduction Strategy VVT Performance Monitor Total Error Fault Threshold Exhaust VVT (SCEngine) (MBD_CLVT_FALTMINUS/PLUS) DTCs P054A, P054B, P054C and P054D 0 100 200 300 400 Accumulated Heat 500 600 700 800 900 1000

Land Rover

Engine Coolant Temperature (degC)

-40

-30

-20

-10

0

10

20

30

40

50

60

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

Engine Coolant Temperature (degC)

-40

-30

-20

-10

0

10

20

30

40

50

60

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

9200 9200 9200 9200 9200 9200 9200 9200 9200 9200 9200

Revision Date: November 2010

Page 138 of 222

Evaluation Time (seconds) for the Catalyst Heating Monitor (MBD_TEMPM_EVALTIMPRE) – DTC P050E 0 30 60 Engine Off Time 120 (minutes) 180 240 480 1000

Engine Start Temperature (degC) -40 120.0 120.0 120.0 120.0 120.0 120.0 120.0 140.0

-5 95.0 95.0 95.0 95.0 95.0 95.0 95.0 110.0

0 65.0 65.0 65.0 65.0 65.0 65.0 65.0 100.0

10 37.0 37.0 37.0 37.0 37.0 37.0 37.0 90.0

20 33.0 33.0 33.0 33.0 33.0 33.0 33.0 81.0

30 30.0 30.0 30.0 30.0 30.0 30.0 30.0 60.0

40 30.0 30.0 30.0 30.0 30.0 30.0 30.0 45.0

60 30.0 30.0 30.0 30.0 30.0 30.0 30.0 40.0

5.11.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

5.12 Idle Speed Control 5.12.1 Description The monitor will execute when all entry conditions have been satisfied.

The diagnostic functions by monitoring the engine speed. If the actual engine speed is more than 100 rpm below the target engine speed, then a counter is started. Once this counter exceeds the failure time limit a failure judgement is made for idle speed lower than expected. If the actual engine speed is more than 200 rpm above the target engine speed a counter is started. Once this counter exceeds the failure time limit a failure judgement is made for idle speed higher than expected.

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Idle Speed Control Monitoring Component/ System Idle speed control

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

P0506

Idle speed lower than expected Idle speed higher than expected

Idle speed versus target

100 rpm too low 100 rpm too high

Engine Coolant Temperature Atmospheric pressure Afterstart Estimated ambient temperature Vehicle speed ISC & vehicle speed conditions True for Stable condition

60 <= T <= 120 degC >= 64 kPa >= 5 s >= -40 degC <= 0 mph

10 s

2 Drive Cycles

P0507

Idle speed versus target

Power Switch Function Engine load (condition only relevant to low fault) ISC

>= 2.0 s 5 secs have elapsed following a change in state of the park/neutral switch or the Footbrake or Fan duty change was greater than 20% Not Active < 2 g/rev

In closed loop control

(this is true if: Fuel Cut Level <= 15% Time after engine start > 2.5 s if engine speed < 2500 rpm > 0 s if engine speed >= 2500 rpm Idle Flag* Set for > 2.5 s or engine speed within 10 rpm of target speed Vehicle speed <= from 5 to 15 mph (depends on gear) or <= 158 mph if in P or N Or Stall Protection In progress) *The idle flag is set if the driver requested torque is below the value required for idle

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Idle Speed Control Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Fault Codes that disable ISC monitoring

Enable Conditions

Time Required

P2229 P2228 P0113 P0112 P00AD P00AC P007D P007C P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0193 P0192 P0010 P2088 P2089 P0020 P2092 P2093 P0013 P2090 P2091 P0023 P2094 P2095 P001A P001B P001C P001D P001E P001F P0351 P2300 P2301 P0352 P2303 P2304 P0353 P2306 P2307 P0354 P2309 P2310 P0355 P2312 P2313 P0356 P2315 P2316 P0357 P2318 P2319 P0358 P2321 P2322 P007B (ris) P007B (dwn) P007B (scf) P0111(hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P02EE (bv) P02EF (bv) P02F0 (bv) P02F1 (bv) P02F2 (bv) P02F3 (bv) P02F4 (bv) P02F5 (bv) P02EE (hl)P02EF (hl) P02F0 (hl) P02F1 (hl) P02F2 (hl) P02F3 (hl) P02F4 (hl) P02F5 (hl) P0262 (hb) P0265 (hb) P0268 (hb) P0271 (hb) P0274 (hb) P0277 (hb) P0280 (hb) P0283 (hb) P0261 (lb) P0264 (lb) P0267 (lb) P0270 (lb) P0273 (lb) P0276 (lb) P0279 (lb) P0282 (lb) P0262 (hg) P0265 (hg) P0268 (hg) P0271 (hg) P0274 (hg) P0277 (hg) P0280 (hg) P0283 (hg) P0261 (lg) P0264 (lg) P0267 (lg) P0270 (lg) P0273 (lg) P0276 (lg) P0279 (lg) P0282 (lg) P0201 P0202 P0203 P0204 P0205 P0206 P0207 P0208 P0335 (_2) P0336 P0340 (run) P0341 P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P0335 (_2s) P0336 (sub) P2105 P0026 (hi) P0026 (lo) P0028 (hi) P0028 (lo) P0011 P0012 P0016 P0021 P0022 P0018 P0027 (hi) P0027 (lo) P0029 (hi) P0029 (lo) P0014 P0015 P0017 P0024 P0025 P0019 P0852 P0851 P0850 (cr1) P0850 (cr2) P0000 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2119 (dif) P2119 (dif_h) P2118 P2119 (cnt) P0123 P0122 P0223 P0222 P0121 P2135 (dif) P2135 (dif_s) P0500 (ud) P0500 (qf) P0500 (ud_s) P0500 (qf_s) P003C P003E

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.12.2 Drive Cycle Information Ensure that the vehicle is fully warm and allowed to idle for at least 30 seconds.

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5.13 Manifold Absolute Pressure Sensor 5.13.1 Schematic

MAP Sensor NA Engine P0106, P0107 and P0108

MAP Sensor at the Throttle (SC Engine) - P0106, P0107 and P0108

MAP Sensor after the Supercharger (SC Engine) - P0236, P0237 and P0238

The naturally aspirated engine has a single manifold pressure sensor, but the supercharged engine has two manifold pressure sensors. On the supercharged engine one sensor measures the pressure after the throttle, but before the supercharger and the second sensor measures the pressure after the inter cooler. The schematic shows the DTCs that are relevant to each of the sensors for the two different engine types.

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5.13.2 High or low input failure - P0107, P0108, P0237 and P0238 These monitors run continuously. The voltage from the sensor is compared with failure thresholds that are pre-defined.

If the voltage is below the low threshold, then a timer will be incremented. If this timer exceeds a threshold, then a failure flag is set and a DTC is stored.

If the voltage is over the high threshold, then a timer will be incremented. If this timer exceeds a threshold, then a failure flag is set and a DTC is stored.

5.13.3 Range or performance failure - P0106 (Naturally Aspirated Engine) and P0236 (Super Charged Engine) The manifold absolute pressure sensor monitor compares the measured manifold absolute pressure with an estimated pressure which is calculated from a model.

When the entry conditions are met, the manifold absolute pressure sensor is faulty if the difference between the actual and estimated values is greater than a calibrated percentage or greater than a second, absolute threshold.

The monitor has the ability to make a normal judgment followed by a failed judgment or vice versa as the monitor runs continuously whilst the entry conditions are met.

The functionality of this diagnostic is the same for each of the two pressure sensors on the supercharged engine, apart from some differences in the entry conditions.

The flow chart shown below explains the operation of this diagnostic.

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MAP Sensor Rationality P0106 (NA Engine) and P0236 (SC Engine)

Monitor execution 160 msec

Start

A

Throttle_Delta = Abs(Throttle_Angle (i) - Throttle_Angle (i-1))

Calculate Estimated_MAP

Decrement Waiting Time (unless Waiting Time = 0)

Throttle_Delta >= Threshold?

No

Entry Conditions For Rationality Check

Yes

Entry conditions satisfied for MAP rationality check?

Engine Speed within window Throttle angle within window Coolant temperature >= Threshold Purge valve duty < threshold Atmospheric pressure >= threshold Throttle_Delta Waiting Time = 0

No

Set throttle delay timer = Waiting Time

Set Monitor Execution Flag = 0

Yes

Set Monitor Execution Flag = 1

Calculate Max_Pressure_Limit Take maximum value of (Estimated_MAP * Hi_Factor) or (Estimated_MAP + Hi_Fault_Guard)

Calculate Min_Pressure_Limit Take minimum value of (Estimated_MAP * Lo_Factor) or (Estimated_MAP - Lo_Fault_Guard)

Increment Normal Timer Decrement Fault Timer (unless Fault Timer = 0)

Yes

Yes

Is Min_pressure_Limit < MAP < Max_pressure_Limit?

No

Increment Fault Timer Decrement Normal Timer (unless Normal Timer = 0)

Is Normal_Timer >= Threshold?

No

Set MAP rationality normal judgment

Is Fault_Timer >= Threshold?

Yes

Set Fault_timer and Normal_Timer = 0

Set MAP rationality failure judgment

Set Fault_timer and Normal_Timer = 0 No

A

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5.13.4 Range or performance failure - P0106 (Super Charged Engine only) The monitor for the absolute pressure sensor at the throttle compares the measured absolute pressure with an estimated pressure which is calculated from a model. This model uses a look-up table which has engine speed and throttle angle as inputs for deriving base and compensation values for intake air temperature, atmospheric pressure and variable valve timing, from which the estimated pressure is calculated.

When the entry conditions are met, the pressure sensor is faulty if the difference between the actual and estimated values is greater than a calibrated threshold and the accumulated difference is above a second threshold.

The monitor has the ability to make a normal judgment followed by a failed judgment or vice versa as the monitor runs continuously whilst the entry conditions are met.

The flow chart shown below explains the operation of this diagnostic.

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MAP Sensor at Throttle Rationality P0106 (SC Engine only)

Monitor execution 40 msec (throttle angle delta is calculated every 8 ms) Start

A

Throttle_Delta = Abs(Throttle_Angle (i) - Throttle_Angle (i-1))

Calculate Throttle_Press_Base Look up table dependent on engine speed and throttle angle

Entry Conditions For Rationality Check Entry conditions satisfied for MAP rationality check?

Engine Speed within window Throttle angle within window Coolant temperature within window Purge valve duty < threshold Atmospheric pressure >= threshold Throttle_Delta < threshold Vehicle Speed within window Estimated MAP >= threshold Inlet air temperature within window VVT angle <= threshold

Set Monitor Execution Flag = 0

No

Yes

Set Monitor Execution Flag = 1

Calculate AltitudeDifComp Look up table dependent on engine speed and throttle angle

Calculate AtmoPComp Look up table dependent on atmospheric pressure

Calculate InAirTComp Look up table dependent on inlet air temperature

Calculate Est_Throttle_Press Est_Throttle_Press = Throttle_Press_Base * (1 - AltitudeDifComp * AtmoPComp) * InAirTComp

Calculate MaxDiff Look up table dependent on engine speed and VVT angle

Calculate Thresh_Pos Thresh_Pos = Pos_Constant * MaxDiff * EGR_Factor

Calculate Thresh_Neg Thresh_Neg = Neg_Constant * MaxDiff * EGR_Factor

MAPDiffPos = MAP - Est_Throttle_Press MAPDiffNeg = 0

AccumDiffPos(i) = 0

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Yes

Yes

Is MAP - Est_Throttle_Press >= 0?

Is MAPDiffPos <= Thresh_Pos?

Revision Date: November 2010

No

No

MAPDiffPos = 0 MAPDiffNeg = Est_Throttle_Press - MAP

AccumDiffPos(i) = AccumDiffPos(i-1) + MAPDiffPos Thresh_Pos

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MAP Sensor at Throttle Rationality P0106 (SC Engine only) (continued)

TempFaltPos = 1 TempNormPos = 0

Yes

Is AccumDiffPos(i) >= FaltlevlPos?

TempNormPos = 0

No

No

TempFaltPos = 0

Is MAPDiffPos <= Thresh_Pos?

Yes

TempNormPos = 1

AccumDiffNeg(i) = 0

Yes

Is MAPDiffNeg <= Thresh_Neg?

TempFaltNeg = 1 TempNormNeg = 0

Yes

Is AccumDiffNeg >= FaltlevlNeg?

TempNormNeg = 0

AccumDiffNeg(i) = AccumDiffNeg(i-1) + MAPDiffNeg - Thresh_Neg

No

No

No

TempFaltNeg = 0

Is MAPDiffNeg <= DiffNeg_Constant?

Yes

TempNormNeg = 1

Yes

TempNormNeg = 1 And TempNormPos = 1?

No

Set MAP rationality normal judgment

TempFaltNeg = 1 Or TempFaltPos = 1?

Yes

Set MAP rationality failure judgment

No

A

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5.13.5 Monitoring Structure Manifold Pressure Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Manifold Pressure Sensor (naturally aspirated engine only) MAP high input P0108 Out of range check MAP low input P0107 Out of range check (hlmap)

MAP range / P0106 performance (mapr)

Rationality - measured versus estimate based on throttle position & engine speed with compensation for altitude and temperature.

Secondary Parameter

Enable Conditions

Time Required

Ignition on

2.21 s

1000 <= RPM <= 4500 rpm >= 50 degC > 68 kPa 5 <= TP <= 60% < 1.0 %/160 ms for at least 0.96 s <= 1.0

15 s

Malfunction Criteria

Threshold value

MAP voltage (> 215 kPa) MAP voltage (< 13.3 kPa)

> 4.90 V < 0.20 V

2 Drive Cycles Fault Codes that disable P0107 P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P0108 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

Measured MAP deviation from estimate

>= 25 %

Engine speed Engine Coolant Temperature Atmospheric pressure Throttle Position Throttle Position change Purge duty

Or

>= 10 kPa

MIL

2 Drive Cycles

Fault Codes that disable P0106 P2229 P2228 P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0010 P2088 P2089 P0020 P2092 P2093 P0013 P2090 P2091 P0023 P2094 P2095 P001A P001B P001C P001D P001E P001F P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0069 P0340 (run) P0341 P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P1315 P2105 P0420 P0430 P0441 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2123 P2122 P2128 P2127 P2138 P2138 (sub) P2119 (dif) P2119 (dif_h) P2118 P2119 (cnt) P2119 (spg) P0123 P0122 P0223 P0222 P0121 P2135 (dif) P2135 (dif_s) P003C P003E

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Manifold Pressure Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Manifold Pressure Sensor (post supercharger, SC engine only) MAP high input P0238 Out of range check MAP low input P0237 Out of range check (hlmap)

Malfunction Criteria

Threshold value

MAP voltage (> 280 kPa) MAP voltage (< 20 kPa)

> 4.90 V < 0.20 V

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P0237 P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P0238 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) MAP range / P0236 performance (mapr)

Land Rover

Rationality - measured versus estimate based on Throttle Position & Engine Speed with compensation for altitude and temperature.

Measured MAP deviation from estimate

>= 25 % Or

>= 10 kPa

Engine Speed 1000 <= RPM <= 4500 rpm 15 s 2 Drive Cycles Engine Coolant Temperature >= 50 degC Atmospheric pressure > 68 kPa Throttle Position 5 <= TP <= 60 % Throttle Position change < 1.0 %/160ms for at least 0.96s Purge duty <= 1.0 Fault Codes that disable P0236 P2229 P2228 P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0010 P2088 P2089 P0020 P2092 P2093 P0013 P2090 P2091 P0023 P2094 P2095 P001A P001B P001C P001D P001E P001F P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0069 P0340 (run) P0341 P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P1315 P2105 P0420 P0430 P0441 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2123 P2122 P2128 P2127 P2138 P2138 (sub) P2119 (dif) P2119 (dif_h) P2118 P2119 (cnt) P2119 (spg) P0123 P0122 P0223 P0222 P0121 P2135 (dif) P2135 (dif_s) P003C P003E

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Manifold Pressure Sensor Monitoring Component/ System

Fault Monitoring Strategy Description Code

Manifold Pressure Sensor (At the Throttle, Super Charged engine only) MAP high input P0108 MAP low input P0107 (hlmap2)

Out of range check Out of range check

Malfunction Criteria

Threshold value

MAP voltage (> 250 kPa) MAP voltage (< 13.3 kPa)

> 4.90 V < 0.20 V

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P0107 P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P0108 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) MAP range / P0106 Rationality - measured performance versusestimate based on (map2) Throttle Position & Engine Speed with compensation for altitude and temperature.

Land Rover

Measured MAP deviation from estimate And Accumulated MAP deviation from estimate (if the difference is above a threshold then the difference is accumulated. If the accummulated difference is above a threshold, then a fault is

>= 25 kPa

>= 5000

Engine Speed Engine Coolant Temperature Intake Air Temperature Atmospheric pressure Throttle Position Throttle Position change Purge duty VVT Advance Angle Estimated Manifold Pressure Vehicle speed

Revision Date: November 2010

1000 <= RPM <= 4500 rpm -10 <= T <= 119 degC -30 <=AT <= 100 degC >= 68 kPa 5 <= TP <= 60 % < 1.0 % /10 ms < 1.0 <= 50 degrees >= 0 kPa 0 <= v <= 407 mph

Dependent 2 Drive upon Cycles drive cycle

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Manifold Pressure Sensor Monitoring Component/ System

Fault Monitoring Strategy Code Description

Malfunction Criteria flagged)

Secondary Parameter

Threshold value

Enable Conditions

Time Required

Fault Codes that disable P0106 P2229 P2228 P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0010 P2088 P2089 P0020 P2092 P2093 P0013 P2090 P2091 P0023 P2094 P2095 P001A P001B P001C P001D P001E P001F P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0101 P010B P115D P0069 P0340 (run) P0341 P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P1315 P2105 P0420 P0430 P0441 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2123 P2122 P2128 P2127 P2138 P2138 (sub) P2119 (dif) P2119 (dif_h) P2118 P2119 (cnt) P2119 (spg) P0123 P0122 P0223 P0222 P0121 P2135 (dif) P2135 (dif_s) P003C P003E

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.13.6 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. It isn't essential that this is from a cold start.

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5.14 Mass Airflow Sensor 5.14.1 Schematic

MAF Sensor 1 - P0101, P0102, P0103 MAF Sensor 2 - P010B, P010C, P010D

The engine has two airflow meters, but only one throttle. The above schematic shows the relevant DTCs for each of the sensors.

5.14.2 High or low input failure - P0102, P0103, P010C and P010D These monitors run continuously. The voltage from the sensor is compared with failure thresholds that are pre-defined.

If the voltage is below the low threshold, then a timer will be incremented. If this timer exceeds a threshold, then a failure flag is set and a DTC is stored.

If the voltage is over the high threshold, then a timer will be incremented. If this timer exceeds a threshold, then a failure flag is set and a DTC is stored.

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5.14.3 Range or performance failure - P0101, P010B The monitor runs continuously so long as the entry conditions are valid.

The mass airflow sensor monitor compares the measured airflow with an estimated airflow which is calculated from a model. The model that calculates the estimated airflow uses a look-up table which has engine speed and throttle angle as inputs for deriving base airflow and then applies compensation values from additional look-up tables for intake air temperature and atmospheric pressure.

The mass airflow sensor reading (P0101 and P010B) is faulty if, when the entry conditions are true, the difference between the actual and estimated values has been greater than a calibrated threshold for a pre-determined time. At low airflows, upper and lower guard values are used to prevent false diagnosis of faults.

The monitor has the ability to make a normal judgment followed by a failed judgment or vice versa, as the monitor runs continuously whilst the entry conditions are true.

As the engine uses two intakes, each with a separate mass airflow sensor and a single throttle, then any of the air for each of the eight cylinders can pass through either of the throttles. This means that if there is a difference in air pressure between the two intakes, then there will be a difference in air flow through each of the intakes.

This is most likely to occur due to side winds and in extreme cases can result in air flowing out through one of the intake ducts. The monitor is able to identify this flow imbalance between the two sides of the intake system, so that the limits maybe adjusted in order to remove any tendency for false diagnosis of a sensor.

Flow imbalance is determined by comparing each MAF sensor reading with the estimated value. If it is lower than the minimum of a predetermined proportion of the estimated value or the estimated value minus an offset, then the high fault threshold for the other MAF sensor is increased by an amount that depends on the difference between the two MAF sensor readings. Using the minimum compare function with an offset or "guard" value ensures that the function is not too sensitive at low airflows.

If it is higher than the maximum of a pre-determined proportion of the estimated value or the estimated value plus an offset, then the low fault threshold for the other MAF sensor is decreased by an amount that depends on the difference between the two MAF sensor readings.

In both cases, the offset value for the fault threshold is determined from a look up table that depends on engine speed and throttle angle.

When imbalance occurs, both sensor readings move equally in opposite directions, the appropriate fault thresholds will be adjusted and no false fault detection will occur. If a single sensor is faulty, then it can only alter a fault threshold for the opposing sensor, its monitor is unaffected and will therefore flag a fault.

The flow chart below explains the operation of this diagnostic.

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Monitor execution 160 msec

MAF Sensor Rationality P0101 and P010B

Start

A

VVT_Delta = Abs(VVT_Angle (i) - VVT_Angle (i-1))

Throttle_Delta = Abs(Throttle_Angle (i) - Throttle_Angle (i-1))

Set throttle timer to Zero

Yes

Throttle_Delta >= Threshold?

No

Increment throttle timer

Set VVT timer to Zero

Yes

VVT_Delta >= Threshold?

No

Increment VVT timer

Entry Conditions For Rationality Check Inlet air temperature within window Coolant temperature within window Engine Speed within window Throttle angle within window Atmospheric pressure >= threshold Vehicle speed within window Not at idle Throttle timer >= threshold VVT timer >= threshold

Entry conditions satisfied for rationality check?

No

Set Monitor Execution Flag “StartDiag” = 0

Yes

Set Monitor Execution Flag “StartDiag” = 1

Calculate PrdGaMap1 and PrdGaMap2 Look up tables for Bank 1 and Bank 2, dependent on engine speed and throttle angle

Calculate AtmoPComp Look up table dependent on atmospheric pressure

Calculate AFMTComp1 and AFMTComp2 Look up tables for Bank 1 and Bank 2, dependent on inlet air temperature

Calculate PrdGa1 and PrdGa2 PrdGa1 = PrdGaMap1 * EGRComp * AtmoPComp * AFMTComp1 PrdGa2 = PrdGaMap2 * EGRComp * AtmoPComp * AFMTComp2

Calculate Intermediate MAF Limit Values for Individual Sensors (P0101 & P010B) HighLimit1 = maximum of (PrdGa1 * (1 + FactorHi)) and (PrdGa1 + HiFaultGuard) LowLimit1 = minimum of (PrdGa1 * (1 - FactorLo)) and (PrdGa1 - LoFaultGuard) HighLimit2 = maximum of (PrdGa2 * (1 + FactorHi)) and (PrdGa2 + HiFaultGuard) LowLimit2 = minimum of (PrdGa2 * (1 - FactorLo)) and (PrdGa2 - LoFaultGuard)

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MAF Sensor Rationality P0101 and P010B (continued)

Calculate Intermediate Values for Flow Imbalance Determination) InternLmtGA1Hi = maximum of (PrdGa1 * IntFctHi) and (PrdGa1 + IntLmtGrdHi) InternLmtGA1Lo = minimum of (PrdGa1 * IntFctLo) and (PrdGa1 - IntLmtGrdLo) InternLmtGA2Hi = maximum of (PrdGa2 * IntFctHi) and (PrdGa2 + IntLmtGrdHi) InternLmtGA2Lo = minimum of (PrdGa2 * IntFctLo) and (PrdGa2 - IntLmtGrdLo)

Calculate ImbMod Look up table, dependent on engine speed and throttle angle

Set Flag Ga2Lo = true

Yes

Is Ga2 < InternLmtGA2Lo?

No

HiLmt1_New = HighLimit1 + (Abs(Ga1 Ga2) * ImbMod)

Set Flag Ga2Hi = true

HiLmt1_New = HighLimit1

Yes

Is Ga2 > InternLmtGA2Hi?

No

LoLmt1_New = LowLimit1 - (Abs(Ga1 Ga2) * ImbMod)

Set Flag Ga1Lo = true

Yes

Is Ga1 < InternLmtGA1Lo?

No

Yes

Is Ga1 > InternLmtGA1Hi?

No

Set Flag Ga1Hi = false

LwLmt2_New = LowLimit2

No

Is Ga1 >= HiLmt1 Or <= LoLmt1?

Yes

Increment normal timer1

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Set Flag Ga1Lo = false

HiLmt2_New = HighLimit2

LoLmt2_New = LowLimit2 - (Abs(Ga1 Ga2) * ImbMod)

Decrement FaltTim1 (unless FaltTim1 = 0)

Set Flag Ga2Hi = false

LoLmt1_New = LowLimit1

HiLmt2_New = HighLimit2 + (Abs(Ga1 Ga2) * ImbMod)

Set Flag Ga1Hi = true

Set Flag Ga2Lo = false

Increment FaltTim1

Reset normal timer1 to zero

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MAF Sensor Rationality P0101 and P010B (continued)

Set MAF rationality normal judgment Bank 1 (P0101)

Yes

Normal timer1 >= NormalTime?

No

FaltTim1 >= FaultTime?

Yes

Set MAF rationality failure judgment Bank 1 (P0101)

No

Decrement FaltTim2 (unless FaltTim2 = 0)

No

Is Ga2 >= HiLmt2 Or <= LoLmt2?

Yes

Increment normal timer2

Set MAF rationality normal judgment Bank 2 (P010B)

Increment FaltTim2

Reset normal timer2 to zero

Yes

Normal timer2 >= NormalTime?

No

FaltTim2 >= FaultTime?

Yes

Set MAF rationality failure judgment Bank 2( P010B)

No

A

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Mass Airflow Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

MAF high input P0103

Out of range check

MAF voltage (> 409.2 g/s)

> 4.90 V

MAF low input P0102 (hlmaf)

Out of range check

MAF voltage (< 0.29 g/s)

< 0.15 V

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P0102 P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P0103 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) 2nd Sensor MAF high input P010D MAF low input P010C (hlmaf2)

Out of range check

MAF voltage (> 391.9 g/s)

> 4.90 V

Out of range check

MAF voltage (< 0.27 g/s)

< 0.15 V

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P010D P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P010C (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Mass Airflow Sensor Monitoring Component/ System

Fault Code

MAF range / performance (mafr2) P0101 P010B

Monitoring Strategy Description

Malfunction Criteria

Measured mass airflow for either Rationality - measured versus estimate based on sensor varies from predicted Throttle Position & Engine airflow by: Speed with compensation for The maximum of altitude and temperature.

Or The minimum of

Threshold value

>= 30 % And + 7 g/s <= 30 % And - 7 g/s

See “Fault Threshold Modifier for the MAF Rationality Diagnostic” table below

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These limits will be adjusted in the presence of flow imbalance: If LH MAF Reading< minimum of (0.94 * Predicted airflow) or (Predicted airflow - 3.0) Then RH Upper Threshold is increased by (Difference In MAF Readings * IMBMOD) Or If LH MAF Reading > maximum of (1.06 *Predicted airflow) or (Predicted airflow + 3.0) Then RH Lower Threshold decreased by (Difference In MAF Readings * IMBMOD) The RH MAF can determine the limits for the LH MAF in the same way.

IMBMOD is determined from the MBD_MAFR2_IMBMOD lookup table in the appendix.

Secondary Parameter

Enable Conditions

Time Required

MIL

Engine Speed 1000 <= N <= 4500 rpm 10.0 s 2 Drive Engine Coolant Temperature -10 <= T <= 120 degC (LR4 & R/R Cycles Vehicle speed 0 <= v <= 407 mph Sport) IAT (Right Hand Sensor) -30 <= IAT <=100 degC 7.0 s IAT (Left Hand Sensor) -30 <= IAT <=100 degC (R/Rover) Atmospheric pressure >= 68 kPa Throttle Position (Range Rover) 5 <= TP <= 60 % Throttle Position (LR4 & R/Rover 10 <= TP <= 60 % Sport) Throttle Position change < 1 %/160 ms for at least 1.02 s VVT change rate (inlet cams) < 5degCA/160ms for at least 1.02s VVT change rate (exhaust cams) < 5degCA/160ms for at least 1.02s Not idling

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Mass Airflow Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable MAF P2229 P2228 P0103 P0102 P010D P010C P0238 rationality monitoring P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0010 P2088 P2089 P0020 P2092 P2093 P0013 P2090 P2091 P0023 P2094 P2095 P001A P001B P001C P001D P001E P001F P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0069 P0340 (run) P0341 P0345 (run) P0346 P0365 (run) P0366 P0390 (run) P0391 P1315 P2105 P0420 P0430 P0441 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P2123 P2122 P2128 P2127 P2138 P2138 (sub) P2119 (dif) P2119 (dif_h) P2118 P2119 (cnt) P2119 (spg) P0123 P0122 P0223 P0222 P0121 P2135 (dif) P2135 (dif_s) P0500 (ud) P0500 (qf) P0500 (ud_s) P0500 (qf_s) P003C P003E

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor Fault Threshold Modifier for the MAF Rationality Diagnostic (MBD_MAFR2_IMBMOD) – DTCs P0101 and P010B 5.2 10.0 Throttle Angle 15.2 (degrees) 20.0 30.0 45.2

Engine Speed (rpm) 1000

2000

3000

4000

1.00 0.80 0.66 0.56 0.50 0.40

1.00 0.80 0.66 0.56 0.50 0.40

1.00 0.80 0.66 0.56 0.50 0.40

1.00 0.80 0.66 0.56 0.50 0.40

5.14.4 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. It isn't essential that this is from a cold start.

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5.15 Barometric Pressure Sensor The Barometric Pressure (BARO) sensor (also referred to as the High Altitude Compensation sensor) is located within the ECM.

5.15.1 High /Low Input Failure These are continuous monitors. The voltage from the sensor is compared to failure thresholds defined in the software. If the voltage is less than the minimum threshold, then a timer starts to increment. Once this timer exceeds another threshold a failure flag is set and a DTC is stored. If the voltage exceeds the maximum threshold defined in the software, then a timer starts to increment. Once this timer exceeds another threshold a failure flag is set and a DTC is stored.

5.15.2 Range / Performance Failure The signal from the sensor is compared to the signal from the MAP sensor at ignition on. During this time the pressure within the inlet manifold should be at atmospheric, and therefore should match the value from the barometric pressure sensor.

The following conditions must be met first before the monitor can execute; Engine speed = 0 rpm Vehicle speed = 0 mph Monitor is not inhibited Ignition on Engine not cranking Battery voltage exceeds minimum threshold Engine coolant temperature is above minimum threshold Atmospheric pressure within limits Inlet manifold pressure value has stabilised If the absolute value of the difference between the signal from the barometric pressure sensor and the MAP sensor differ by more than a defined amount, a timer is executed. If the timer exceeds a calibrated threshold, a temperature failure is judged. Providing there is no failure of the MAP sensor, a DTC is then stored.

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Barometric Pressure Sensor Monitoring Component/ System

Fault Monitoring Strategy Code Description

BARO. sensor high input P2229 BARO. sensor low input P2228 (hlatmp)

Out of range check Out of range check

Malfunction Criteria

Threshold value

BARO. sensor voltage (> 126 kPa) BARO. sensor voltage (< 44 kPa)

> 4.53 V < 0.08 V

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P2228 P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) & P2229 P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) BARO sensor P0069 range / performance (atpr)

Comparison with MAP sensor signal and BARO. signal

Absolute value of Barometric Pressure - MAP

> 10 kPa

Ignition Estimated ambient temperature Engine Coolant Temperature Engine Speed Vehicle speed Battery voltage Time after Ignition on Delta MAP Starter Relay Ignition off time (prior to test)

on >= -30 degC >= -30 degC <= 0 rpm <= 0 mph >= 10.5 V 0.080 <= time <= 0.400 s < 0.35 kPa/40ms Not on = 0 or >= 60 s

0.20 s

2 Drive Cycles

Fault Codes that disable P0069 P2229 P2228 P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0073 P0072 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0071 (hi) P0071 (lo) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.15.3 Drive Cycle Information Start the engine and allow to idle for at least 30 seconds. Ensure that the ignition has been off for at least 1 minute before starting the engine.

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5.16 Fuel Pressure System 5.16.1 Description This monitor runs continuously. The voltage from the sensor is compared with failure thresholds defined in the software. If the sensor voltage is less than the minimum threshold, a timer will be started. If this timer exceeds a threshold, a failure flag is set and a DTC is stored. If the sensor voltage is greater than the maximum threshold, a timer will be started. If this timer exceeds a threshold, a failure flag is set and a DTC is stored.

Fuel Pressure System Monitoring Component/ System

Fault Monitoring Strategy Code Description

Fuel Supply Pressure Sensor Fuel pressure sensor P018D high input Fuel pressure sensor P018C low input (hlfulp)

Out of range check Out of range check

Malfunction Criteria

Threshold value

Fuel rail pressure voltage (> 1000 kPa) Fuel rail pressure voltage (< 50 kPa)

> 4.95 V

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

< 0.11 V Fault Codes that disable P018C P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P018D (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

Fuel pressure sensor P018B range / performance (fpss)

Rationality – deviation Measured during pump duty deviation

Difference between maximum and minimum pressure values

< 3.0kPa

Fuel level Battery Voltage Estimated ambient temperature Accumulated pump duty deviation Fuel pump feedback compensation

>= 5 % >= 10.5 V >= -20 degC >= 24.0 % In operation

Dependent 2 Drive Cycles upon drive cycle

Fault Codes that disable P018B P018D P018C P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Fuel Pressure System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Fuel Supply Pressure Sensor Fuel system pressure too P008B Rationality - measured versus high target Fuel system pressure too P008A Rationality - measured versus low target (vfps)

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Delta pressure

< -150 kPa

2 Drive Cycles

> 180 kPa

>= 10.5 V >= 4.0 s >= 5 % At least 10.1 s Active for > 4.96s

240 s

Delta pressure

Battery Voltage Ignition on time Fuel level Fuel cut not active for Fuel pump feedback compensation Target pressure change Engine load Entry conditions true

<= 20kPa/160ms for at least 1.44s < 3.0 g/rev > 4.0 s

Fault Codes that disable P008A P018D P018C P0643 P0642 & P008B P018B P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Fuel Pressure System Monitoring Component/ System

Fault Code

High Fuel Pressure System Fuel rail pressure sensor high P0093 input Fuel rail pressure sensor low P0092 input (hlfuhp)

Fuel rail pressure sensor P0191 range / performance (hfpd)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Out of range check

Fuel rail pressure voltage (> 20 MPa) Fuel rail pressure voltage (< 0 MPa)

>= 4.78 V

Out of range check

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

<= 0.21 V Fault Codes that disable P0192 P0643 P0642 P1603 P0606 (cnt) & P0193 P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

Rationality – Average pressure measured during System power up

Fuel Pressure, following Soak period

> 8.0 MPa

Engine off time Engine stopped & Not starting (fuel pressure measurement Window)

8 < time <= 18.5 hours 025 <= time <= 6.5 s

Fault Codes that disable P0191 P0643 P0642 P0193 P0192 P2610 (mis) P2610 (hi) P2610 (lo) U0155 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) U0140

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2 Drive Cycles

Fuel Pressure System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

High Fuel Pressure System Fuel system P0088 pressure too high

Rationality - measured versus target

Fuel pressure - Target pressure And Fuel Pump On Angle

> 1.0 MPa

Engine state Time after start Normal injection fuel mass Fuel level Fuel pump not in start mode Fuel cut not active Target pressure change

Not starting >= 1.0 s <= 160 mg >= 1 % For at least 1.0 s For at least 3.0 s < 0.3 MPa/80ms for at least 10.0s

10.0 s

2 Drive Cycles

Fuel system P0087 pressure too low (hpfs)

Rationality - measured versus target

Fuel pressure - Target pressure And Fuel Pump On Angle

< See Table < -1.0 MPa 20 < deg CA < 112 degrees

5.0 s

Fault Codes that disable P0087 P0643 P0642 P0193 P0192 P0335 (_2) P0336 P0335 & P0088 (_2s) P0336 (sub) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P00C6 (dual) High Pressure Rise P00C6 High pressure fuel system Time (hprt) pressure rise checked during engine start

System pressure during start - system pressure pre-start

< 0.01 MPa

Crank angle counter (from start) >= 720 CA 2 Drive Battery Voltage 6.0 <= Vbatt <= 16.0 V Cycles Coolant temperature -10 <= T <= 95 degC Fuel level >= 1 % Starter On Start injection fuel cut request flag Set Engine off time >= 28740 s Fault Codes that disable P00C6 P0118 P0117 P018D P018C P0643 P0642 P0193 P0192 P0116 (hi) P0116 (lo) P0116 (stk) P0335 (_1) P0335 (_1s) P2610 (mis) P2610 (hi) P2610 (lo) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) U0140

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

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Fuel pump on angle condtion for high pressure fuel system diagnostic (MBD_HPFS_FPFLOW) DTC P0088 0 600 1000 2000 Engine Speed (rpm) 3000 4000 5000 6000 6500

Mean normal fuel injection mass (mg) 5

10

15

20

25

30

35

40

45

70

160

31.10 31.10 30.70 30.53 32.50 31.50 31.50 32.50 32.50

33.85 33.85 34.15 32.55 33.94 34.47 34.45 35.45 35.50

41.92 37.17 37.40 35.68 39.05 36.75 36.55 36.57 42.50

43.02 39.52 40.05 37.48 41.85 38.62 39.41 38.91 50.00

45.57 42.32 42.35 40.91 41.38 41.05 42.32 45.82 49.50

47.98 44.73 44.02 43.85 43.75 43.99 45.50 48.45 52.00

49.83 47.27 46.95 47.60 45.93 45.82 50.50 48.14 51.88

51.09 51.09 49.45 49.88 48.80 48.90 54.25 48.87 52.00

53.30 53.30 52.10 52.07 51.45 51.17 55.00 51.34 53.50

58.05 58.05 62.15 61.97 61.87 65.04 65.12 61.79 63.00

122.50 122.50 122.50 122.50 122.50 122.50 122.50 122.50 122.50

5.16.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. Ensure that the engine has been stopped for at least 8 hours before engine start.

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5.17 Intake Air Temperature Sensor 5.17.1 Air Intake Temperature Sensor Monitoring Schematic There are two mass air flow sensors, each of which incorporates an air temperature sensor. The airflow from both of the two intakes is fed through a single throttle.

Right Hand Sensor - P0111, P0112 and P0113 Left Hand Sensor P00AB, P00AC and P00AD

P007B, P007C and P007D The supercharged engine also has a sensor in the intake manifold, located after the intercooler.

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Twin Intake Air Temperature Sensors - Schematic

P0111, P0112 and P0113

P00AB, P00AC and P00AD

5.17.2 Intake Air Temperature Sensor - Stuck in Range Diagnostic - P0111 & P00AB This monitor checks that the inlet air temperature sensor is not stuck at a value within its normal operating range. It runs continuously provided the engine speed is above a threshold and will fail if the sensor signal has not changed by more than a pre-determined amount after the vehicle has been driven above a certain speed for at least a pre-determined time and also operated at idle for a calibrated time.

The inlet air temperature sensor reading is compared with a maximum and a minimum value. If it is above the maximum, then this is updated to the current sensor reading. If the sensor reading is below the minimum, then this is updated to the current sensor value. A test value is calculated by subtracting the minimum from the maximum value.

When the entry conditions for the driving check are true, then a timer is incremented, when these conditions are not true, then the timer is decremented by a calibrated amount. When the timer exceeds a threshold, then a flag is set to indicate that sufficient driving has been completed. The entry conditions for the driving check require that the mass air flow is within a window and the vehicle speed is above a threshold.

When the entry conditions for the idle check are true, then a timer is incremented, when these conditions are not true, then the timer is decremented by a calibrated amount. When the timer exceeds a threshold, then a flag is set to indicate that sufficient idling has been completed. The entry conditions for the idle check require that the mass air flow is below a threshold, the engine coolant temperature is above a threshold, the driving check has been completed and the vehicle speed is below a threshold.

Once both operating condition flags have been set, then the test value is compared to the fault threshold, if this is exceeded, then a normal judgment is made. If the threshold has not been exceeded, then a fault will be set.

The flow chart shown below explains the operation of this diagnostic.

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This diagnostic is identical for both left and right-hand sensors. The left-hand sensor uses P00AB and the right-hand sensor P0111.

In le t A ir T e m p e ra tu r e S tu c k in R a n g e P 0111 or P 00A B

M o n ito r e x e c u tio n 1 6 0 m s e c S ta rt

IA T _ V o lta g e > IA T _ M a x?

Yes

IA T _ M a x = IA T _ V o lta g e

Yes

IA T _ M in = IA T _ V o lta g e

No IA T _ V o lta g e < IA T _ M in ?

No T e s tV a lu e = IA T _ M a x - IA T _ M in

E n try C o n d itio n s F o r S tu c k C h e c k E n g in e s p e e d > = th re s h o ld

E n try c o n d itio n s s a tis fie d fo r s tu c k s ig n a l ch e c k ?

No

R e s e t m a x a n d m in va lu e s a n d T im e rs

No

D e c re m e n t D riv in g C h e c k T im e r

Yes

S e t D riv in g C h e c k C o m p le te F la g

No

D e c re m e n t Id le C h e c k T im e r

Yes

S e t Id le C h e c k C o m p le te F la g

Yes D riv in g C h e c k C o n d itio n s E n g in e A irflo w w ith in w in d o w ve h ic le sp e e d > = th re s h o ld

D rivin g c h e c k c o n d itio n s sa tis fie d ?

No

Yes In c re m e n t D riv in g C h e c k T im e r

D riv in g C h e c k T im e r > = th re sh o ld ?

No

Id le C h e c k C o n d itio n s E n g in e A irflo w < = th re s h o ld E C T > th re sh o ld v e h ic le s p e e d < = th re s h o ld D riv in g C h e c k c o m p le te fla g is s e t

Id le ch e c k c o n d itio n s s a tisfie d ?

Yes In cre m e n t Id le C h e c k T im e r

Id le C h e ck T im e r > = th re s h o ld ?

No

Id le & D riv in g C h e c k F la g s S e t?

Yes

No

T e s tV a lu e > F a u lt le v e l?

S e t S tu c k IA T fa ilu re ju d g m e n t

Land Rover

Yes

S e t S tu ck IA T n o rm a l ju d g m e n t

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5.17.3 Intake Air Temperature Sensor - Biased Sensor Diagnostic - P0111 & P00AB The monitor checks that the airflow temperature sensor is reading a correct value when compared to other sensors on the vehicle.

The diagnostic will run if the engine has been off for greater than a calibrated time, the engine has been stopped, the time after start is greater than or equal to a threshold, engine pre-heating must not have been detected and the difference between the maximum of the average coolant temperature and the average of the inlet air temperature in the opposing air intake (i.e. the right hand sensor diagnostic uses the left hand sensor reading) and the minimum of these two temperatures must be less than or equal to a threshold. The average values are determined over four sensor readings at the start of system operation.

The monitor compares the airflow temperature sensor reading to the average values of the coolant temperature and the inlet air temperature from the sensor in the opposite air intake (i.e. the right hand sensor diagnostic uses the left hand sensor reading). Two test values are formed, one to check for a high bias and a second to check for a low bias, so for the right hand sensor monitor, these will be given by: Test Value High = Average RH IAT - (maximum of Average ECT and Average LH IAT) Test Value Low = (minimum of Average ECT and Average LH IAT) - Average RH IAT These test values must be less than or equal to a calibrated threshold for a normal judgment to be made. If either test value is greater than the threshold, then a failure is flagged.

The flow chart shown below explains the operation of this diagnostic for the right hand sensor.

This diagnostic is identical for both left and right-hand sensors, except the opposite sensor is used to establish the entry condition check and the fault determination, i.e. for the left hand sensor, the right and left designations are swapped.

The left-hand sensor uses DTC P00AB and the right-hand sensor P0111.

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R H In ta k e A ir T e m p e r a tu r e B ia s e d a t S ta rt - P 0 1 1 1

M o n i to r e x e c u t i o n 1 6 0 m s e c S ta rt

Yes

R e s e t T e m p e ra t u re S u m V a lu e s R e s e t d a t a p o in t c o u n te r

No E n t r y C o n d i ti o n s f o r IA T B ia s e d C h e c k

No

E n g in e h a s b e e n s t o p p e d P r e - h e a ti n g n o t d e te c te d A ft e r s ta r t tim e a b o v e a t h re s h o ld E n g in e s o a k ti m e w i th in w in d o w

E n tr y c o n d iti o n s s a t is fie d fo r I A T b ia s e d check?

Yes

S ta r te r m o t o r b e in g o p e r a te d ?

No EC T_Sum = EC T_Sum + EC T L H IA T _ S u m = L H IA T _ S u m + L H IA T R H IA T _ S u m = R H IA T _ S u m + R H IA T D a ta P o in t C o u n te r = D a ta P o in t C o u n te r + 1

D a ta P o in t C o u n te r = 4 ?

Yes A v e r a g e E C T = E C T _ S u m /4 A v e r a g e L H IA T = L H IA T _ S u m / 4 A v e r a g e R H IA T = R H IA T _ S u m / 4

A b s o lu te V a lu e o f ( A v e r a g e E C T - A v e ra g e L H IA T ) < = th r e s h o l d ?

Yes

T e s t V a lu e H i g h = A v e ra g e R H IA T - ( m a x im u m o f A v e ra g e E C T a n d A v e ra g e L H IA T )

T e s t V a lu e L o w = ( m in i m u m o f A v e ra g e E C T a n d A v e ra g e L H IA T ) - A v e r a g e R H I A T

Yes

T e s t V a lu e H ig h > H ig h L im it ?

S e t R H I A T b i a s e d h i g h fa i lu re ju d g m e n t

No

S e t R H I A T b i a s e d h ig h n o r m a l ju d g m e n t

No Yes

T e s t V a l u e L o w > L o w L im it?

S e t R H IA T b ia s e d l o w fa i lu re ju d g m e n t

No

S e t R H I A T b i a s e d lo w n o r m a l ju d g m e n t

E nd

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5.17.4 Intake Air Temperature Sensor 2 - Post-Supercharger - P007B Stuck High at Engine Start The diagnostic runs once per drive cycle so long as a range/performance or rationality fault with the post-supercharger intake air temperature sensor has not already been detected.

If the engine speed is above a threshold, the mass air flow is above a threshold, the coolant temperature is below a threshold and the postsupercharger intake air temperature sensor voltage is below or equal to a fault limit, then a fault timer will be incremented. If this fault timer reaches a threshold, then the sensor will be judged as faulty.

If the post-supercharger intake air temperature sensor voltage is above the fault limit and the engine has been running for longer than a predetermined time, then the sensor will be judged as normal.

The flow chart shown below explains the operation of this diagnostic.

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IAT2 Sensor (Post Supercharger) Stuck High at Start - P007B

M onitor execution 160 m sec Start

Reset Fault Timer

Range performance or rationality fault detected?

No

No Entry Conditions for IAT2 Stuck High at Start Check No

Entry conditions satisfied for IAT2 stuck high at start?

Engine speed >= threshold M AF >= threshold ECT <= threshold

No

Yes Increm ent Fault Timer

IAT2 Sensor Voltage > Fault Limit?

Reset Fault Timer

Yes

Reset Fault Timer

No

Yes

Fault Timer >= limit?

After start time > threshold?

Yes Yes

Set IAT2 stuck high at start failure judgm ent

Set IAT2 stuck high at start norm al judgm ent

End

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5.17.5 Range/Performance Check This diagnostic looks for an unexpected step change in the signal and runs continuously so long as a stuck high at engine start or rationality fault with the post-supercharger intake air temperature sensor has not already been detected.

The sensor is read every 0.160 seconds and three comparison values calculated, these are: Delta temp = Reading 0.480s ago - Current Reading Delta temp old1 = Reading 0.640s ago - Reading 0.160s ago Delta temp old2 = Reading 0.800s ago - Reading 0.320s ago If all three delta values exceed a threshold then a fault will be detected with the sensor

5.17.6 Rationality Check This diagnostic checks for a biased reading from the sensor and operates in the period following engine start. It runs once per drive cycle provided that a range/performance or stuck high at engine start fault with the post-supercharger intake air temperature sensor has not already been detected.

It compares the post-supercharger intake temperature sensor reading with that of temperature sensor in the right-hand mass air flow meter.

Provided the other entry conditions are valid, then if the values of the two sensors deviate by more than a pre-determined amount for a calibrated time period a fault will be detected. If the values are within the fault threshold for a calibrated time period, then a normal judgment is made.

The entry conditions are that the intake manifold pressure must be below a threshold, the time after start must be below a threshold and an engine soak check has been completed successfully. An engine soak is judged to have occurred if at engine start, the coolant temperature is below a threshold, the air intake temperature at the MAF sensor is below a threshold and the absolute value of the coolant temperature minus the air intake temperature is also below a threshold.

The flow chart shown below explains the operation of this diagnostic.

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IA T 2 P o s t -S u p e r c h a r g e r S e n s o r B ia s e d a t S t a r t P007B

M o n i to r e x e c u t i o n 1 6 0 m s e c S ta rt

R e s e t n o rm a l a n d fa u lt t im e r s

No

R a n g e p e r fo r m a n c e o r s t u c k h i g h a t s ta r t f a u lt d e te c te d ?

E n g i n e S o a k C h e c k C o n d it io n s f o r I A T 2 B ia s e d M o n i to r - D e te r m in a t io n m a d e a t e n g in e s t a r t

No

No

E n g in e S o a k C h e c k P a s s e d ?

E n g in e c o o la n t t e m p e ra t u re < t h re s h o ld IA T ( fr o m M A F ) < t h re s h o ld A b s o lu te v a l u e o f (E C T - I A T ) < t h re s h o ld Yes

E n t r y C o n d it io n s fo r IA T 2 B ia s e d C h e c k In le t M a n ifo ld p re s s u re < t h re s h o ld A f te r s ta r t ti m e < th r e s h o l d

E n tr y c o n d i tio n s s a ti s f ie d f o r IA T 2 b ia s e d check?

Yes

No

IA T 2 D e lta = A b s o lu t e v a lu e o f ( IA T ( fr o m M A F ) IA T 2 )

In c r e m e n t F a u lt ti m e r

I n c r e m e n t N o r m a l tim e r

No

IA T 2 D e lta < fa u lt th r e s h o ld ?

Yes

Yes R e s e t n o rm a l t im e r

R e s e t f a u lt ti m e r

Yes

F a u lt T i m e r > F a ilu r e L im it ?

S e t IA T r a tio n a lit y f a i lu r e ju d g m e n t No

Yes

N o r m a l T i m e r > P a s s L im i t?

S e t IA T r a t io n a lit y n o r m a l ju d g m e n t

E nd

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5.17.7 Monitoring Structure Intake Air Temperature Sensor Monitoring Component/ System

Fault Code

Intake Air Temperature Sensor (RH intake) IATS high input P0113 IATS low input P0112 (hliat)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Out of range check Out of range check

IAT voltage (> 4.90 V) IAT voltage (< 0.11 V)

< -40 degC > 119 degC

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P0112 P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P0113 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) IATS range / performance P0111 (iatr)

RH Inlet air temperature biased at start

RH IAT - (maximum of LH IAT average & ECT average) Or (Minimum of LH IAT average & ECT average) - RH IAT

> 20 degC

> 20 degC

Engine off time 28800 <= soak time < 3930000 s Difference between maximum of <= 10 degC LH IAT average & ECT average, and minimum of LH IAT average & ECT average Time after start >= 120 s Engine condition Has been stopped Block Heater Not detected (see table for conditions)

2 Drive Cycles

Fault Codes that disable P0111 P0113 P0112 P00AD P00AC P0103 P0102 P010D (range performance) P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P2610 (mis) P2610 (hi) P2610 (lo) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Intake Air Temperature Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Intake Air Temperature Sensor (RH intake) IATS range / performance P0111 IATS stuck (iatd) (Voltage movement following soak up at idle, or cool down when driving)

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Filtered IAT Voltage change (Maximum - minimum)

<= 0.029 V

General Entry Conditions Time after start Engine Speed

>= 4.96s >= 500 rpm

Driving Check Conditions Mass airflow Vehicle speed Time in conditions

30 <= MAF <= 500 g/s >= 47 mph >= 30 s

Idle Check Conditions Mass Airflow Engine Coolant Temperature Vehicle speed Time in conditions

<= 9.5 g/s >= 75 degC <= 407 mph >= See table

Time Required

2 Drive Cycles

Fault Codes that disable P0111 P0113 P0112 P00AD P00AC (stuck) P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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MIL

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Intake Air Temperature Sensor Monitoring Component/ System

Fault Code

LH Intake Air Temperature Sensor IATS high input P00AD IATS low input P00AC (hliat1)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Out of range check Out of range check

IAT voltage (> 4.90 V) IAT voltage (< 0.10 V)

< -40 degC > 119 degC

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P00AC P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P00AD (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

IATS range / P00AB LH Inlet air temperature biased LH IAT - (maximum of RH IAT performance (iatr1) at start average & ECT average) Or (Minimum of RH IAT average & ECT average) - LH IAT

> 20 degC

> 20 degC

Engine off time Difference between maximum of RH IAT average & ECT average, & minimum of RH IAT average & ECT average Time after start Engine condition Block Heater

28800 <= soak time < 3930000 s <= 10 degC

2 Drive Cycles

>= 120 s Has been stopped Not detected (see table for conditions) Fault Codes that disable P00AB P0113 P0112 P00AD P00AC P0103 P0102 P010D (range performance) P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P2610 (mis) P2610 (hi) P2610 (lo) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Intake Air Temperature Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

LH Intake Air Temperature Sensor IATS range / performance P00AB IAT sensor stuck (iatd1) (Voltage movement following soak up at idle, or cool down when driving)

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Filtered IAT Voltage change (Maximum - minimum)

<= 0.029 V

General Entry Conditions Time after start Engine Speed

>= 4.96 s >= 500 rpm

Driving Check Conditions Mass Airflow Vehicle speed Time in conditions

30 <= MAF <= 500 g/s >= 47 mph >= 30 s

Idle Check Conditions Mass Airflow Engine Coolant Temperature Vehicle speed Time in conditions

<= 9.5 g/s >= 75 degC <= 407 mph >= See table

Time Required

MIL

2 Drive Cycles

Fault Codes that disable P00AB P0113 P0112 P00AD P00AC P0103 P0102 P010D (stuck) P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Intake Air Temperature Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Intake Air Temperature Sensor 2 - Post supercharger IATS2 high input P007D Out of range check IATS2 low input P007C Out of range check (hliat2)

Malfunction Criteria

Threshold value

IAT2 voltage (> 4.95 V) IAT2 voltage (< 0.10 V)

< -40 degC > 119 degC

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition on

2.21 s

2 Drive Cycles

Fault Codes that disable P007C P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 & P007D (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) IATS2 range / P007B performance (iat2_ris)

Stuck high at engine start

IATS2 range / P007B Range Performance performance Readings taken every 128 (iat2_dwn) milliseconds and compared (unexpected step change in Signal) IATS2 range / P007B performance (iat2_scf)

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Rationality check (comparison with IAT after soak)

IAT2 voltage (<= 0.42V)

>= 119 degC

Range Performance Fault Rationality Fault Engine Speed Mass Airflow Engine Coolant Temperature

Not detected Not detected >= 1000 rpm >= 4 g/s <= 120 degC

IAT(i - 3) - IAT(i) And IAT(i - 4) - IAT(i-1) And IAT(i - 5) - IAT(i-2)

> 30 degC

Stuck High Fault Rationality Fault

Not detected Not detected

Difference between IAT and IAT2

> 35 degC

Stuck High Fault Range Performance Drop Fault Engine Coolant Temperature Intake Air Temperature Absolute of (ECT – IAT) Manifold Absolute Pressure Time after start

Not detected Not detected < 40 degC < 40 degC < 10 degC < 120 kPa < 60 s

17.6 s

2 Drive Cycles

2 Drive Cycles

> 30 degC > 30 degC

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17.6 s

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2 Drive Cycles

Intake Air Temperature Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable P007B P0113 P0112 P00AD P00AC P007D P007C P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0073 P0072 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P2601 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Intake Air Temperature Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Intake Air Temperature Sensor 2 - Post supercharger IATS2 range / P007B performance (iat2_scf)

Rationality check (comparison with IAT after soak)

Difference between IAT and IAT2

> 35 degC

Stuck High Fault Range Performance Drop Fault Engine Coolant Temperature Intake Air Temperature Absolute of (ECT – IAT) Manifold Absolute Pressure Time after start

Not detected Not detected < 40 degC < 40 degC < 10 degC < 120 kPa < 60 s

17.6 s

2 Drive Cycles

Fault Codes that disable P007B P0113 P0112 P00AD P00AC P007D P007C P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0118 P0117 P0643 P0642 P0073 P0072 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 P0069 P2601 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

IAT Sensor Range Performance Entry Condition (TBD_IATD_LOWTIMC & TBD_IATD1_LOWTIMC) – DTCs P00AB and P0111

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Estimated Ambient Temperature (degC)

-40

-30

-20

-10

0

10

20

30

40

50

60

Time (s)

800.0

650.0

500.0

350.0

200.1

25.0

25.0

25.0

25.0

25.0

25.0

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Block Heater Detection Conditons:

Preheating of the engine coolant system is determined to have taken place if: After start time is less than 35 seconds And Engine coolant temperature is less than 75 degC And Engine coolant temperature has dropped by more than 5 degC, following engine start.

Or Engine coolant temperature has dropped by more than 5 degC, following engine start And Engine off time is greater than or equal to 120 minutes And Ambient temperature is less than or equal to 5 degC And Inlet air temperature is less than or equal to 10 degC And Effective engine coolant temperature ( = (ECT x 0.8) + (Transmission temperature x 0.2)) is greater than or equal to modelled ECT (determined from ambient temperature, ECT at engine off and engine off time) plus 10 degC)

Estimated Ambient Temperature Determination:

Initial value: If the engine has been switched off for less than 2 minutes, then the estimated ambient temperature initialises to the RH inlet air temperature sensor reading or 20 degC, whichever is the lower.

If the engine has been switched off for more than 2 minutes, then the estimated ambient temperature initialises to the RH inlet air temperature sensor reading.

Updating before the Driving Conditions for the P0111 or P00AB Diagnostics have been completed: If the RH inlet air temperature sensor reading is less than the current estimated ambient temperature, then the estimated ambient temperature is changed to the RH inlet air temperature sensor reading.

Updating after the Driving Conditions for the P0111 or P00AB Diagnostics have been completed: If the RH inlet air temperature sensor reading is used as the estimated ambient temperature.

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5.17.8 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. Ensure that the engine has been stopped for at least 8 hours before engine start.

5.18 Knock Sensor 5.18.1 Description When all of the entry conditions have been satisfied, the input signals from the four knock sensors (KS) are checked against variable upper and lower threshold levels that are dependent on engine speed. If either sensor input is outside the threshold, then a failure will be flagged. If a failure is noted on two drive cycles the MIL will illuminate.

Knock Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Knock sensor 1 low input P0327 Knock sensor 2 low input P0332 Knock sensor 3 low input P032C Knock sensor 4 low input P033C Knock sensor 1 high input P0328 Knock sensor 2 high input P0333 Knock sensor 3 high input P032D Knock sensor 4 high input P033D (kcsr)

Out of range check (low)

KS Smoothed Voltage

<= See table

2 Drive Cycles

KS Smoothed Voltage

>= See table

>= 10 s >= 1000 rpm >= 80 degC >= See table >= 0 mph

5s

Out of range check (high)

Afterstart Engine Speed Engine Coolant Temperature Engine load Vehicle speed

Fault Codes that disable Knock P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 Sensor monitoring (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

Knock Sensor Low Limit Threshold (TBD_KCSR_FALTLEVELLO) - DTCs P0327 & P0332

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Engine Speed (rpm) Voltage (V)

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

0.013

Knock Sensor High Limit Threshold (TBD_KCSR_FALTLEVELHI) - DTCs P0328 & P0333 Engine Speed (rpm) Voltage (V)

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

0.330

0.330

0.340

0.350

0.400

0.570

0.600

0.650

0.700

0.900

1.050

1.200

1.400

1.800

2.300

2.500

Engine Load Entry Condition for Knock Sensor Diagnostic (TBD_KCSR_MAPLOAD) - DTCs P0327, P0328, P0332 & P0333 Engine Speed (rpm)

1000

1400

1800

2200

2600

3000

3400

3800

4200

4600

5000

5400

5800

6200

6600

7000

Engine Load (g/rev)

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

1.300

5.18.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. It isn't essential that this is from a cold start.

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5.19 ECM Power Supplies 5.19.1 Description The ECM Power Supplies are monitored for the following conditions.

Loss of battery supply when the ignition is on. If the supply is not present for more than a predefined time than a failure will be registered.

A system control relay supplying power to the ECM when it should be off. In this case, only a single occurrence of the fault will illuminate the MIL. Power supply to sensors out of range.

ECM Power Supply Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Standby Power (12V) (syrh)

P0560

Monitor of battery back up

Loss of battery power to Pin B54

System Relay Monitor (syrr)

P0687

Monitor for system control relay

Permanent supply of 12V, ECM permanently on.

Threshold value

Secondary Parameter

Enable Conditions

Time Required

Ignition Switch

On

2.56 s

2 Drive Cycles Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 P0560 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) Ignition On 10.2 s 1 Drive Cycle Battery Voltage > 10.49 V Engine Crank Not Requested Initialization Timer > 0.512 s Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 P0687 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.19.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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5.20 Engine Control Module Self Test 5.20.1 Description The ECM performs a number of self checks on both the Random Access Memory (RAM), Read only Memory (ROM) and the two central processor units it uses to control the engine management system. A failure of any of the self-checks will require the ECM to be replaced.

Performing continuous checksum calculations and comparing the results with a stored checksum value checks the ROM. If the calculated checksum and stored checksum do not match then a ROM failure is registered. The DTC logged will depend upon when the failure was identified.

A RAM test checks the RAM during ECM initialisation and shut down.

The ECM continually monitors itself for illegal internal processor operations, tasks being performing in the wrong order and attempts to write to the read only memory. If any of these faults are detected, P0606 will be logged.

The ECM uses two processors to perform its calculations, the two processors are continually communicating with each other to transfer critical information. Internal diagnostic hardware continuously monitors the communication between the two processors for errors. If the level of errors exceeds a defined limit then a failure is registered.

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Engine Control Module Self Test Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

P0606

Controller test (cntrlr) Initial RAM test (ramint) Initial ROM test (romint) Shut off RAM test (ramsht) Continuous ROM test (romcnt) ROM exchange test (romexc) Error capturing instructions (eci) Scheduling sequence check (ssc) Duplication memory fault (dupl) Detection of write to internal ROM (fmemo) Watch dog timer fault (wdog)

P0607 P0601

Sub CPU watch dog (subwdog) CPU communications (cpucom)

Watch dog timer operation Communication time out

P1603

EEPROM performance (eepr)

EEPROM check sum

ECM P0606 P0604 P0605 P0604 P0605 P0605 P0606 P0606 P0606 P0605

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

CPU operation condition RAM initialization ROM check sum RAM test result ROM check sum ROM check sum Illegal CPU opcode execution

Ignition Ignition Ignition Main relay ECM ECM ECM

On On On Shut off Running Running Running

0.040 s 0.040 s 0.040 s 0.040 s 0.040 s 0.040 s 0.040 s

2 Drive Cycles

Scheduling sequence

ECM

Running

0.010 s

Mirror check result Illegal write to internal ROM

ECM ECM

Running Running

0.160 s 0.040 s

Watch dog timer operation

ECM

Running

0.040 s

ECM Running 0.080 s ECM Running 0.250 s Fault Codes that disable ECM P0601 disables P0607 Monitoring P0601 (sub) disables P0605 (romcnt_s) ECM Engine Voltage

Running Not starting >= 10.0 V

immediately 2 Drive Cycles

Fault Codes that disable P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 P1603 (eepr) Monitoring (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.20.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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5.21 Engine Starting 5.21.1 Crank request Signal The crank request signal is continually monitored for the presence of a signal whilst the vehicle is in motion. Vehicle motion is confirmed by checking vehicle speed, engine speed and engine load. If the crank request signal is detected for longer than the defined time a failure is registered. The crank request signal is also monitored to confirm the signal is available when a crank request is required

5.21.2 Park / Neutral Switch During the engine crank operation if the park / neutral input is low, with the CAN signal from the transmission is indicating park / neutral is selected; the low fault timer is enabled. When the low fault timer reaches the calibrated time, the low fault flag is set.

If the park / neutral input is high, and the vehicle is detected as moving with an appropriate engine load, then the high fault timer will be enabled. When the high fault timer reaches the calibrated time, the high fault flag is set.

5.21.3 Starter relay The starter relay is controlled by the ECM in response to a valid crank request signal when the vehicle is stationary and park or neutral are selected. A failure of the starter relay circuit will be registered if the starter relay drive signal from the ECM is on but the starter relay feedback indicates that the relay is off or, vice versa.

Engine Starting Component/ System

Fault Code

Crank request signal (exst) High input P0512

Low input P0512

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Crank request signal active while vehicle moving

Crank request signal

On

Ignition Battery Voltage Vehicle speed Engine Speed Engine load

On >= 6.50 V > 12.4 mph 800 < RPM < 4000 rpm > 20.0 g/s

0.16 s

2 Drive Cycles

Crank request not available When required

Crank request signal

Off

Ignition Battery Voltage Ignition key status Ignition key position

On >= 6.56 V Update detected Engine crank

1.28 s

2 Drive Cycles

Fault Codes that disable P0512

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Engine Starting Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

P/N Switch (pnsm) High input P0852

Malfunction during driving

Park Neutral Switch during driving

Park/Neutral on

Transmission type Vehicle speed Engine Speed Engine Coolant Temperature Engine load

Automatic 9.3 <= Vehicle speed <= 162 mph 1000 <= RPM <= 4500 rpm >= -30 degC >= 0.7 g/rev

4.96 s

2 Drive Cycles

Low input P0851

Malfunction during cranking

Park Neutral Switch during Engine Crank

Park/Neutral off

Transmission type Crank request Starter Relay Gear position Gear lever

Automatic = ON = ON = P/N = P/N

0.64 s

2 Drive Cycles

Check between hardwired signal and CAN message

Switch input And CAN message Or Switch input And CAN message

= P/N = not P/N

Hardwired switch status Time elapsed since gearshift

No faults (P0851 or P0852) > 4.96 s

4.96 s

2 Drive Cycles

Rationality check P0850

= not P/N = P/N Fault Codes that disable P0103 P0102 P010D P010C P0238 P0237 P0108 P0107 P0850, P0851 & P0852 P0118 P0117 P0643 P0642 P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0236 P0101 P010B P115D P0106 U0101 U0402 (cs) U0402 (alive) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0500 (ud) P0500 (qf) P0500 (ud_s) P0500 (qf_s)

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Engine Starting Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Rationality, relay drive circuit Short to battery

Start relay drive

ON

Ignition Starter relay low side feedback Battery Voltage

On for at least 0.080 s On > 7.0 V

0.48 s

2 Drive Cycles

Open circuit P0615

Rationality, relay drive circuit Open circuit

Start relay drive

OFF

Ignition Starter relay high side feedback Starter relay low side feedback Battery Voltage

On for at least 0.080 s On Off > 7.0 V

5.12 s

2 Drive Cycles

Short to ground P0616

Rationality, relay drive circuit Short to ground

Start relay drive

OFF

Ignition Starter relay high side feedback Battery Voltage

On for at least 0.080 s Off > 7.0 V

5.12 s

2 Drive Cycles

Starter Relay (starly) Short to battery P0617

Fault Codes that disable Starter Relay Monitoring

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.21.4 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. It isn't essential that this is from a cold start.

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5.22 Accelerator Pedal Position Sensor 5.22.1 Description During ignition on conditions the voltages from the two-track accelerator pedal position sensor are monitored. Both tracks are independently monitored for out of range high and low conditions.

If the input voltage to the ECM stays above a defined value for longer than a calibratable period, the high input failure judgment is made. If the input voltage to the ECM stays below a defined value for longer than a calibratable period, the low input failure judgment is made.

Additionally the signals from the two tracks are compared. If the angle obtained from sensor 1 differs from the angle obtained from sensor 2 by more than a defined amount for longer than a calibration period a range / performance failure judgment is made.

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Accelerator Pedal Position Sensor Monitoring Component/ System

Fault Code

LR4 and Range Rover Sport Accelerator Position Sensor 1 (apsad) High fault P2123 Low fault P2122 Accelerator Position Sensor 2 (apsad2) High fault P2128 Low fault P2127

Range Rover Accelerator Position Sensor 1 (apsad) High fault P2123 Low fault P2122 Accelerator Position Sensor 2 (apsad2) High fault P2128 Low fault P2127

Accelerator Position P2138 Sensor 1 or 2 fault (apsdif)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Sensor monitored against an upper or lower threshold, if the reading exceeds either threshold, then a portion of the difference to the threshold is accumulated and a fault set when this accumulated value exceeds a second threshold

Sensor position And Accumulated difference Sensor position And Accumulated difference

> 93.5% > 8.9% < 13.5% > 19.4%

Ignition Battery voltage

On >= 6 V

2 Drive Cycles

Sensor position And Accumulated difference Sensor position And Accumulated difference

> 96.0% > 5.1% < 12.0% > 17.1%

Sensor monitored against an upper or lower threshold, if the reading exceeds either threshold, then a portion of the difference to the threshold is accumulated and a fault set when this accumulated value exceeds a second threshold

Sensor position And Accumulated difference Sensor position And Accumulated difference

> 92.1% > 7.1% < 11.9% > 13.4%

Ignition Battery voltage

On >= 6 V

2 Drive Cycles

Sensor position And Accumulated difference Sensor position And Accumulated difference

> 95.2% >19.8% < 10.2% > 6.3% Ignition Battery voltage

On >= 6 V

2 Drive Cycles

Accumulated difference between sensors

> 30.0 %

Time Required

Fault Codes that disable P0601 (sub) P2122 P2123 P2127 APS difference Monitoring P2128

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.22.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. It isn't essential that this is from a cold start.

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MIL

5.23 Throttle Control System 5.23.1 Description The Electronic Throttle Interface consists of two Pulse Width Modulation (PWM) output drives to control the throttle blade position, with two analogue signals for throttle position feedback. The two position signals have positive linear characteristics. There are various diagnostic checks carried out on the throttle control system, all of which result in the illumination of the MIL if a fault is detected. The main checks are described below: With the necessary enabling conditions satisfied: 1. The difference between the actual throttle position and the requested position will be compared. If they differ by greater than a calibratable amount a failure judgment will be made.

2. If the throttle blade position PWM is driven at 100% duty for greater than a calibratable period of time a failure judgment will be made.

3. If an over current condition is detected by the throttle driver hardware for greater than a calibratable period of time a failure judgment will be made.

4. If the input voltage to the ECM from either of the position sensors exceeds a defined threshold for greater than a calibratable period of time, a high failure judgment is made.

5. If the input voltage to the ECM from either of the position sensors stays below a defined threshold for greater than a calibratable period of time, a low failure judgment is made.

6. If the difference between the throttle angles reported by the two position sensors differs by greater than a calibratable value a failure judgment is made.

Throttle Control System Monitoring Component/ System

Fault Code

Throttle difference P2119 (thrdif)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Difference fault between actual throttle position and requested

Accumulated absolute deviation Or Accumulation of actual throttle position greater than requested position

> 42 %

Ignition Battery voltage Throttle adaption

On 6 <= Vbat <= 18 V Throttle offset adaption complete For large deviation

> 42 %

Time Required

Fault Codes that disable P0601 P2118 P2119 (cnt) P0122 Throttle Difference P0123 P0222 P0223 P2135 Monitoring

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MIL 2 Drive Cycles

Throttle Control System Monitoring Component/ System

Fault Code

Throttle Assembly P2118 Fault (thrdty)

(thrcnt)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Throttle duty 100% continuous

Time

> 2.08 s

Ignition No MLT fault flag

On MLT not set in main or sub

2.08 s

2 Drive Cycles

0.16 s

2 Drive Cycles

N/A

2 Drive Cycles

P2119

Over current fault detected by throttle driver hardware

Current time

> 0.16 s

Throttle Body Spring P2119 Fault (thrspg)

Limp home spring and throttle return spring functional check at power down

For Return spring, throttle angle For Limp Home spring, throttle angle

< 2.18 % < 0.70 %

Sensor monitored against an upper or lower threshold, if the reading exceeds either threshold, then a portion of the difference to the threshold is

Sensor position And Accumulated difference Sensor position And Accumulated difference

> 4.50 V > 2.05 V < 0.43 V > 1.21 V

accumulated and a fault set when this accumulated value exceeds a second threshold

Sensor position And Accumulated difference Sensor position And Accumulated difference

> 4.66 V > 1.09 V < 1.31 V > 6.49 V

Throttle position sensor 1 (tps1) High fault P0123 Low fault P0122 Throttle position sensor 2 (tps2) High fault P0223 Low fault P0222

Fault Codes that disable P0601 (sub) P2118 Ignition On No MLT fault flag MLT not set in main or sub Battery voltage >= 6 V Over current fault flag Not set Throttle offset adaption Complete Fault Codes that disable P0601 (sub) P2135 (dif) P2135 Throttle Body spring (dif_s) P2135 monitoring

Ignition Battery voltage

2 Drive Cycles

On >= 6 V

Fault Codes that disable P0601 (sub) monitoring for throttle position sensor electrical faults Both Throttle P2135 Sets if both throttle postion Position sensors have an electrical fault Sensors faulty present (tpsb)

(P0122 or P0123) And (P0222 or P0223)

Detected

0.002 s

(already set for single Fault)

Detected

Fault Codes that disable P0601 (sub) monitoring for both throttle position sensors faulty

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Throttle Control System Monitoring Component/ System

Fault Code

TPS1 4x AMP P0121 (tp4dif) Throttle position P2135 sensor Difference (tpsdif)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

4x amplified throttle position sensor fault functional check

Accumulated deviation

> 5.68 V

TPS1 voltage Battery voltage Ignition

0.298 V < TPS1 < 1.152 V 6 V < Vbat < 18 V On

Difference fault between throttle sensor 1 and 2

Accumulated throttle angle difference

> 210 %

Ignition Throttle offset adaption

On complete

Time Required

5.23.1.1.1.1.1.1.1 2 Drive Cycles 2 Drive Cycles

Fault Codes that disable P0601 P0601 (sub) P0122 P0123 throttle position difference P0222 P0223 monitoring

MLT = Mechanical Limphome Throttle If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.23.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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5.24 Torque Monitoring 5.24.1 Description The Engine Torque is monitored to ensure that there is no large unintended torque available which is greater than that requested by the driver.

Torque Monitoring Component/ System

Fault Code

Engine Torque Fault P061A (trq_fl)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Calculates air consumption from fuel used by the engine and compares with requested torque value

Accumulated error value

> 250 Nm

Engine state

Running

Time Required

MIL No *

Fault Codes that disable P0601 P0601 (sub) P2119 (dif) P2119 (dif_h) P2118 Torque Monitoring P2119 (cnt) P MIL Request due to P2105 Safety monitoring fault present a fuel cut (mile)

Fuel cut off has been performed due to the presence of a safety related fault

Time after ignition on or crank Voltage supply

>= 0.512 s >= 10.5 V

0.640 s

Fault Codes that disable None P2105

* MIL will be set due to P2105 If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.24.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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2 Drive Cycles

5.25 Vehicle Speed Signal 5.25.1 Description Two checks are performed on the vehicle speed signal. The first check monitors for the loss of any of the ABS wheel speed sensor signals. If any of the signals are not available for greater than a predefined time a failure is registered. The second check compares the vehicle speed transmitted by the ABS control module and the vehicle speed calculated by the ECM (using data from the transmission output shaft speed sensor). If the transmitted and calculated speeds do not match for greater than a predefined time a failure is registered.

Vehicle Speed Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Vehicle Speed Input (vspd1_ ud)

P0500

CAN transmissions from ABS monitored

ABS not updating speed signal

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

0.52 s

2 Drive Cycles

0.40 s

2 Drive Cycles

0.80 s

2 Drive Cycles

Fault Codes that disable P0601 (sub) P0500 Vehicle Speed Input (vspd1_ qf)

P0500

Monitor of Quality Factor information received from ABS

Speed signal Quality Factor Or

<1 <> 3 Fault Codes that disable P0601 (sub) P0500

Vehicle Speed Sensor Range Performance (vspddif)

P0501

Comparison of ABS vehicle speed and calculated speed from the transmission output shaft speed

Difference between ABS Vehicle Speed and calculated Vehicle Speed

> 16.2 mph

Engine speed >= 500 rpm Battery Voltage >= 10.0 V Time after engine start >= 2.0 s Ignition On Fault Codes that disable P0500 (ud) P0500 (qf) P0500 P0501 (ud_s) P0500 (qf_s) P0601 (sub) P0721

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.25.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. It isn't essential that this is from a cold start.

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5.26 Fuel Injectors 5.26.1 Description The fuel injector monitor operates continuously. Detection of an open or short circuit condition of each injector is possible by comparing the actual injection signal with a target injection signal. The actual injection signal is derived from the change in injector voltage when the injector is turned off and the target injection signal is derived from an injection set flag.

A normal judgment is made when the injector voltage moves from the on to the off position i.e. on the signal edge. If the target signal and the actual signal are both set to one, a normal judgement is made. This process is repeated for each injector in firing order. A failure judgment is made when no injector signal edge is detected i.e. no change in voltage but the injector has been triggered.

Fuel Injector Monitoring Component/ System Cylinder 1 Cylinder 2 Cylinder 3 Cylinder 4 Cylinder 5 Cylinder 6 Cylinder 7 Cylinder 8

Fault Code

Monitoring Strategy Description

P02EE P02EF P02F0 P02F1 P02F2 P02F3 P02F4 P02F5

Power supply booster voltage error (injc_bv)

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

3.0 s

2 Drive Cycles

Fault Codes that disable P02EE (hl) P02EF (hl) P02F0 (hl) P02F1 (hl) P02F2 (hl) power supply monitoring P02F3 (hl) P02F4 (hl) P02F5 (hl) P0261 (lb) P0264 (lb) P0267 (lb) P0270 (lb) P0273 (lb) P0276 (lb) P0279 (lb) P0282 (lb) P0261 (lg) P0264 (lg) P0267 (lg) P0270 (lg) P0273 (lg) P0276 (lg) P0279 (lg) P0282 (lg) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Fuel Injector Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Cylinder 1 Cylinder 2 Cylinder 3 Cylinder 4 Cylinder 5 Cylinder 6 Cylinder 7 Cylinder 8

P02EE P02EF P02F0 P02F1 P02F2 P02F3 P02F4 P02F5

Cylinder 1 Cylinder 2 Cylinder 3 Cylinder 4 Cylinder 5 Cylinder 6 Cylinder 7 Cylinder 8

Time Required

MIL

Injector high side and low side short circuit (injc_hl)

2.52 s

2 Drive Cycles

P0262 P0265 P0268 P0271 P0274 P0277 P0280 P0283

Injector high side short circuit to battery (injc_hb)

2.52 s

2 Drive Cycles

Cylinder 1 Cylinder 2 Cylinder 3 Cylinder 4 Cylinder 5 Cylinder 6 Cylinder 7 Cylinder 8

P0261 P0264 P0267 P0270 P0273 P0276 P0279 P0282

Injector low side short circuit to battery (injc_lb)

2.52 s

2 Drive Cycles

Cylinder 1 Cylinder 2 Cylinder 3 Cylinder 4 Cylinder 5 Cylinder 6 Cylinder 7 Cylinder 8

P0262 P0265 P0268 P0271 P0274 P0277 P0280 P0283

Injector high side short circuit to ground (injc_hg)

2.52 s

2 Drive Cycles

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Malfunction Criteria

Threshold value

Revision Date: November 2010

Secondary Parameter

Enable Conditions

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Fuel Injector Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Cylinder 1 Cylinder 2 Cylinder 3 Cylinder 4 Cylinder 5 Cylinder 6 Cylinder 7 Cylinder 8

P0261 P0264 P0267 P0270 P0273 P0276 P0279 P0282

Cylinder 1 Cylinder 2 Cylinder 3 Cylinder 4 Cylinder 5 Cylinder 6 Cylinder 7 Cylinder 8

P0201 P0202 P0203 P0204 P0205 P0206 P0207 P0208

Malfunction Criteria

Threshold value

Time Required

MIL

Injector low side short circuit to ground (injc_lg)

2.52 s

2 Drive Cycles

Injector high side or low side open circuit (injc_op)

2.52 s

2 Drive Cycles

Secondary Parameter

Enable Conditions

Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 injector circuit monitoring (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.26.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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5.27 Ignition Amplifiers / Coils 5.27.1 Description The ignition amplifier monitor is very similar in operation to the injectors monitor, albeit checking primary coil current instead of voltage.

Internal hardware detection circuits in the ECM, monitor the individual and group outputs to the coil primaries for incorrect current conditions. If a failure is repeatedly noted for a predefined number of times then a failure of the appropriate coil or group circuit is registered. If the failure is registered on 2 drive cycles the MIL will illuminate.

Ignition Amplifiers / Coils Component/ System

Fault Code

Monitoring Strategy Description

Cylinder 1 malfunction Cylinder 2 malfunction Cylinder 3 malfunction Cylinder 4 malfunction Cylinder 5 malfunction Cylinder 6 malfunction Cylinder 7 malfunction Cylinder 8 malfunction

P0351 P0352 P0353 P0354 P0355 P0356 P0357 P0358

Open Circuit (arigt_op)

Cylinder 1 malfunction Cylinder 2 malfunction Cylinder 3 malfunction Cylinder 4 malfunction Cylinder 5 malfunction Cylinder 6 malfunction Cylinder 7 malfunction Cylinder 8 malfunction

P2300 P2303 P2306 P2309 P2312 P2315 P2318 P2321

Short circuit to ground (arigt_gs)

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Malfunction Criteria

Threshold value

Secondary Parameter Engine not starting

Revision Date: November 2010

Enable Conditions

Time Required

MIL

1.52 s

2 Drive Cycles

1.52 s

2 Drive Cycles

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Ignition Amplifiers / Coils Component/ System

Fault Code

Monitoring Strategy Description

Cylinder 1 malfunction Cylinder 2 malfunction Cylinder 3 malfunction Cylinder 4 malfunction Cylinder 5 malfunction Cylinder 6 malfunction Cylinder 7 malfunction Cylinder 8 malfunction

P2301 P2304 P2307 P2310 P2313 P2316 P2319 P2322

Short circuit to battery (arigt_bs)

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

1.52 s

2 Drive Cycles

Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 ignition circuit monitoring (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.27.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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5.28 Variable Valve Timing The Variable Valve Timing (VVT) system comprises of an actuator built into the camshaft chain sprocket and an Oil Control Valve (OCV) which controls the flow of oil to the camshaft actuator. The system is controlled via the oil control valve and camshaft position sensors. The oil control valve varies the oil flow into the camshaft actuator and creates a variable offset between the camshaft and the camshaft sprocket; feedback for this system is provided by the camshaft position sensors.

5.28.1 Hardware Check This monitor checks the oil control valve on both banks 1 and 2. The commanded and the actual state of the valve are continually checked as long as the PWM drive signal remains within limits. If the commanded and the actual state differ for longer than a predefined time period then a failure is registered. The ECM determines the type of failure by examining which state the valve was unable to attain and the output signal to the valve. If a failure is registered on 2 drive cycles, the MIL will illuminate.

5.28.2 Camshaft Position The camshaft position sensors are used to monitor the actual level of camshaft advance / retard against the target level. If the target and actual values do not match for a calibratable period of time a failure is registered. If a failure is registered on 2 drive cycles, the MIL will illuminate.

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Variable Valve Timing Component/ System Circuit continuity Bank A intake (arvtia)

Fault Code

P0010 P2088 P2089 Bank B intake P0020 (arvtib) P2092 P2093 Bank A exhaust P0013 (arvtea) P2090 P2091 Bank B exhaust P0023 (arvteb) P2094 P2095

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Open circuit Short to ground Short to battery Open circuit Short to ground Short to battery Open circuit Short to ground Short to battery Open circuit Short to ground Short to battery

Enable Conditions

Time Required

MIL

1.52 s

2 Drive Cycles

Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 Variable Valve Timing (ramint_s) P0605 (romint) P0605 (romint_s) P0604 Circuit Monitoring (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0600

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Variable Valve Timing Component/ System Range/Performance High Bank A intake Bank B intake Range/Performance Low Bank A intake Bank B intake (vvtm)

Land Rover

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

P0026 P0028

Actual Cam position compared to target position

Difference too great

>= 10.0 crank degrees

P0026 P0028

Actual Cam position compared to target position

Difference too low

Secondary Parameter

Enable Conditions

Time Required

MIL

Engine Speed >= 500 rpm 10 s 2 Drive Target angle change <= 1 degCA/80ms Cycles Engine Coolant Temperature -10 <= T <=120 degC <= 10.0 crank Battery voltage delta <= 20 V/80ms degrees Battery voltage change during <= 20 V diagnostic VVT Operating mode (NA Engine) 1 <= mode no. <= 4 VVT Operating mode (SC Engine) 3 <= mode no. <= 4 VVT Adaptions held (NA Engine) >= 0.5 s VVT Adaptions held (SC Engine) >= 30 s Speed threshold - VVT Speed >0 (Threshold = VVTSPDMIN x VVTCOMP, see table for values) Entry conditions true for >= See table Fault Codes that disable Bank A P0113 P0112 P00AD P00AC P007D P007C P0118 intake Variable Valve Timing P0117 P0643 P0642 P0010 P2088 P2089 P0111 Monitoring (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0335 (_1) P0335 (_2) P0336 P0340 (strt) P0340 (run) P0341 P0335 (_1s) P0335 (_2s) P0336 (sub) P0340 (strt_s) P0340 (sub) P0341 (sub) P0011 P0012 P0016 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Variable Valve Timing Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Fault Codes that disable Bank B P0113 P0112 P00AD P00AC P007D P007C P0118 intake Variable Valve Timing P0117 P0643 P0642 P0020 P2092 P2093 P0111 Monitoring (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0335 (_1) P0335 (_2) P0336 P0345 (strt) P0345 (run) P0346 P0335 (_1s) P0335 (_2s) P0336 (sub) P0345 (strt_s) P0345 (run_s) P0346 (sub) P0021 P0022 P0018 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

VVT = Variable Valve Timing

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Variable Valve Timing Component/ System

Fault Code

Range/Performance High Bank A exhaust P0027 Bank B exhaust P0029 Range/Performance Low Bank A exhaust P0027 Bank B exhaust P0029 (vtme)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Actual Cam position compared to target position

Difference too great

>= 10.0 crank degrees

Actual Cam position compared to target position

Difference too low

Secondary Parameter

Engine Speed Target angle change Engine Coolant Temperature <= 10.0 crank Battery voltage delta degrees Battery voltage change during diagnostic VVT Operating mode VVT Adaptions held Speed threshold - VVT Speed (Threshold = VVTSPDMIN x VVTCOMP, see table for values) Entry conditions true for

Enable Conditions

Time Required

MIL

>= 500 rpm <= 1 degCA/80ms -10 <= T <=120 degC <= 20 V/80ms <= 20 V

10 s

2 Drive Cycles

3 <= mode no. <= 4 >= 30 s >0

>= See table

Fault Codes that disable P0113 P0112 P00AD P00AC P007D P007C P0118 Bank A exhaust Variable P0117 P0643 P0642 P0013 P2090 P2091 P0111 (hi) Valve Timing Monitoring P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0335 (_1) P0335 (_2) P0336 P0365 (run) P0366 P0335 (_1s) P0335 (_2s) P0336 (sub) P0365 (run_s) P0366 (sub) P0014 P0015 P0017 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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Variable Valve Timing Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Fault Codes that disable P0113 P0112 P00AD P00AC P007D P007C P0118 Bank B exhaust Variable P0117 P0643 P0642 P0023 P2094 P2095 P0111 (hi) Valve Timing Monitoring P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0335 (_1) P0335 (_2) P0336 P0390 (run) P0391 P0335 (_1s) P0335 (_2s) P0336 (sub) P0390 (run_s) P0391 (sub) P0024 P0025 P0019 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

VVT = Variable Valve Timing If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

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Entry Condition for Variable Valve Timing Position Error Diagnostic (TBD_VVTM_VVTSPDMIN & TBD_VTME_VVTSPDMIN) – DTCs P0026, P0027, P0028 and P0029 Target Error (deg CA)

-60.00

-5.00

-5.00

0.00

5.00

5.00

60.00

Minimum Speed

-65.00

-10.00

0.00

0.00

0.00

10.00

65.00

Entry Condition for Variable Valve Timing Position Error Diagnostic (MBD_VVTM_VVTCOMP & MBD_VTME_VVTCOMP) – DTCs P0026, P0027, P0028 and P0029 Minimum speed compensation factor

Engine Speed (rpm)

Oil Control Valve Temperature (degC) -0.001

25.002

49.996

100.001

119.996

6500

0.0000

0.2014

0.6653

0.2014

0.0000

1000

0.0000

0.5341

1.0010

0.4669

0.1343

1500

0.0000

0.7324

1.1993

0.6653

0.3998

2000

0.0000

0.7324

1.3336

0.9338

0.6653

3500

0.0000

0.7324

1.5991

1.1993

0.8667

Entry Condition Timer for Variable Valve Timing Position Error Diagnostic (MBD_VVTM_DELAYTIMC & MBD_VTME_DELAYTIMC) – DTCs P0026, P0027, P0028 and P0029 Engine Coolant Temperature (degC)

Delay Time (s)

Engine Speed (rpm)

-40.00

-20.00

19.38

20.00

40.00

79.38

80.00

100.00

1000

5.040

5.040

5.040

2.000

2.000

2.000

1.040

1.040

2000

5.040

5.040

5.040

2.000

2.000

2.000

1.040

1.040

3000

5.040

5.040

5.040

2.000

2.000

2.000

1.040

1.040

4000

5.040

5.040

5.040

2.000

2.000

2.000

1.040

1.040

5000

5.040

5.040

5.040

2.000

2.000

2.000

1.040

1.040

6000

5.040

5.040

5.040

2.000

2.000

2.000

1.040

1.040

7000

5.040

5.040

5.040

2.000

2.000

2.000

1.040

1.040

8000

5.040

5.040

5.040

2.000

2.000

2.000

1.040

1.040

5.28.3 Drive Cycle Information Please refer to the relevant part of the "Readiness Setting" section.

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5.29 Controller Area Network System The Controller area network (CAN) system is monitored by the ECM for a number of conditions.

5.29.1 Monitoring Structure CAN System Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Invalid Output Shaft Speed Signal (cnem_tsp) Invalid Wheel Speed (Front Left) Signal (cnem_sfl) Invalid Wheel Speed (Front Right) Signal (cnem_sfr) Invalid Wheel Speed (Rear Left) Signal (cnem_srl) Invalid Wheel Speed (Rear Right) Signal (cnem_srr)

U0402

CAN signal 'error marker' received from TCM

C0031

Control Module Vehicle Options Error (vosm_ccf)

Land Rover

Secondary Parameter

Enable Conditions

Time Required

MIL

TCM Unable to Transmit Valid Data

Ignition switch on time

>= 5.0 s

5.0 s

2 Drive Cycles

CAN signal 'error marker'

ABS Unable to Transmit Valid

Ignition switch on time

>= 5.0s

5.0 s

2 Drive

received from ABS

Data

CAN signal 'error marker'

ABS Unable to Transmit Valid

received from ABS

Data

C0037

CAN signal 'error marker' received from ABS

ABS Unable to Transmit Valid Data

Ignition switch on time

>= 5.0 s

5.0 s

2 Drive Cycles

C003A

CAN signal 'error marker' received from ABS

ABS Unable to Transmit Valid Data

Ignition switch on time

>= 5.0 s

5.0 s

2 Drive Cycles

On

2.4 s

1 Drive Cycle

C0034

P0610

Rationality between the ECM ECM EEPROM stored vehicle stored Car Configuration File options data does not match the (CCF) and the IPK stored CCF IPK vehicle options data transmitted on the CAN bus.

Threshold value

Cycles Ignition switch on time

>= 5.0 s

5.0 s

2 Drive Cycles

Fault Codes that disable None CAN error marker monitoring Ignition Switch

Fault Codes that disable U0300 U0155 P1603 P0606 (cnt) P0606 (cnt_s) P0604 P0610 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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CAN System Monitoring Component/ System Lost Communication With Anti-Lock Brake System (ABS) Control Module (cana)

Fault Code

Monitoring Strategy Description

U0121 CAN signals missing from ABS module.

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

ABS CAN ID not received.

No ID.

Ignition Battery Voltage Engine Crank Initialization Timer

On > 10.49 V Not Requested > 0.512 s

2.56 s

2 Drive Cycles

On > 10.49 V Not Requested > 0.512 s

2.56 s

2 Drive Cycles

On > 10.49 V Not Requested > 0.512 s

2.56 s

1 Drive Cycle (request may not succeed if link down)

On > 10.49 V Not Requested > 0.512 s

2.56 s

1 Drive Cycle (request may not

Fault Codes that disable None U0121 Lost Communication With (TCM) Transmission Control Module (cant)

U0101

CAN signals missing from TCM module

TCM CAN ID not received.

No ID.

Ignition Battery Voltage Engine Crank Initialization Timer Fault Codes that disable None U0101

Lost Communication With Instrument Panel Cluster (IPC) Control Module (cani)

U0155 CAN signals missing from IPC module.

IPC CAN ID not received.

No ID.

Ignition Battery Voltage Engine Crank Initialization Timer Fault Codes that disable None U0155

Lost Communication With (BCM) Body Control Module (bcm)

U0140 CAN signals missing from BC module.

BCM CAN ID not received.

No ID.

Ignition Battery Voltage Engine Crank Initialization Timer

succeed if link down) Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 U0140 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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CAN System Monitoring Component/ System CAN Signal Configuration Check (scfg)

Fault Code

Monitoring Strategy Description

Malfunction Criteria

U0300

Comparison of stored and transmitted identifiers

Stored and transmitted identifiers are not equal

Secondary Parameter

Enable Conditions

Time Required

MIL

Ignition Battery Voltage Engine Crank Initialization Timer

On > 10.49 V Not Requested > 0.512 s

7.0 s

1 Drive Cycle

Threshold value

Fault Codes that disable P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 U0300 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

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TCM Gear Selector Communications Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Calculated checksum compared to the transmitted checksum for the following CAN messages:

Calculated checksum not equal to received checksum more than (checked every 0.020 s)

66 times

Battery Voltage Ignition on for Or

> 10.5 V > 5.0 s Ignition off and Keep Alive request received from the TCM

1.34 s

2 Drive Cycles

Error mark check U0402

The counter value from the TCM is in error

Error value received more than (checked every 0.020 s)

154 times

3.1 s

2 Drive Cycles

Stuck check U0402

The counter value from the TCM has not changed

Counter unchanged for more Than (checked every 0.020 s)

154 times

3.1 s

2 Drive Cycles

Large skip check U0402

The counter value from the TCM is in range, but the difference between the previous value plus 0Fh - the current value and 0Fh, is greater than 3

Error value received more Than (checked every 0.020 s)

154 times

3.1 s

2 Drive Cycles

Checksum correlation U0402

Fault Codes that None disable U0402

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.29.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section.

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5.30 Fuel Level Sensor The output of the Fuel Level Sensor is monitored to ensure it changes as fuel is used. The fuel level is continuously monitored. The fuel level should change by more than a set percentage before a calculated amount of fuel is used. This process will operate through cumulative trips if necessary.

Once the fuel level changes by the amount required the process is reset and starts again. If the fuel used threshold is reached before the fuel level changes by the required percentage, a temporary fault will be stored. A second occurrence will cause a permanent fault to be stored, however the MIL will not illuminate.

Fuel Level Sensor Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Range / performance P0461 (flsr)

Rationality v fuel used

Fuel level change

<3%

Fuel used (calc.)

Time since engine start Battery voltage

>= 20.0 l >= 0.0 s 10.5 <= Vbatt <= 16 V

Dependent upon drive cycle

The fuel level change is calculated every 0.320 s. 9.0% is subtracted from this change value and if the result is greater than 0, then it is added to an integral value. After 0.320s of data collection, the integral value is compared to a fault Threshold.

If the integral is >= to this threshold, then a fault is set.

Raw fuel level signal integral

>= 9.0 %

Time since engine start Battery voltage Vehicle speed

>= 0.0 s 10.5 <= Ubatt <=16 V = 0 mph for >= 9.92 s

10.24s

No (default condition enables other monitors) No (default condition enables other monitors)

Noisy P0461

Fault Codes that disable U0155 P0461

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.30.1 Drive Cycle Information Please operate the vehicle until at least 20.0 l (5.3 US gallons) of fuel have been used. Include idle periods of at least 30 seconds duration.

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5.31 Engine Off Timer 5.31.1 Description The engine off timer monitor compares the ECM's own internal counter to the change in the engine coolant temperature since the ignition was turned off. If the two differ by more than a calibratable period of time a failure is registered. If the fault occurs on 2 drive cycles the MIL will illuminate.

Engine Off Timer Component/ System

Fault Code

Signal availability P2610 (eotm_mis) Engine Off Timer Range P2610 Performance (eotm_hi/lo)

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Timer signal

Not received within

2.240 s

Rationality with respect to ECT Change since key off

Engine off time Counter outside limits

See table

ECT at end of last trip Engine off time Estimated engine off time Transport mode Pre-heating not detected:

-80.0 < T < 119.4 degC available < 28800 s Not selected

Average ECT - ECT

Time Required

MIL 2 Drive Cycles

< 6.25 degC within 9.9 s of engine start

Fault Codes that disable P0118 P0117 P0643 P0642 P0073 P0072 P0116 (hi) P2610 P0116 (lo) P0116 (stk) P0071 (hi) P0071 (lo) U0155 P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

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Engine Off Time Monitor (TBD_EOTM_LOWERLIMIT) – Lower Limit for DTC P2610 Estimated Engine off Time (minutes)

0

32

64

96

128

160

192

224

256

288

320

352

384

416

448

480

Fault Limit (minutes)

0

1

2

3

4

7

12

22

35

57

80

101

121

136

146

146

480

Engine Off Time Monitor (TBD_EOTM_UPPERLIMIT) – Upper Limit for DTC P2610 Estimated Engine off Time (minutes)

0

32

64

96

128

160

192

224

256

288

320

352

384

416

448

Fault Limit (minutes)

43

182

271

338

419

481

584

678

796

912

1036

1166

1338

1514

1714 65535

5.31.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. Ensure that the engine has been stopped for less than 8 hours before engine start.

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5.32 Ambient Air Temperature 5.32.1 Description The ambient air temperature (AAT) signal is supplied by the instrument pack. The ECM performs two diagnostic checks on the signal.

Rationality Check The signal is checked for rationality against the intake air temperature sensor. When the entry conditions have been met the difference between the two sensors is calculated. If the difference is greater than 30 °C for a predefined period of time th en a failure is registered. If the problem occurs on two drive cycles then the MIL will illuminate. The DTC which is logged depends on whether the ambient air temperature sensor signal is lower or higher than the intake air temperature sensor.

Range/ Performance If the instrument pack detects a failure in the ambient air temperature sensor it will output a constant default value. The range / performance check monitors for a stuck signal at this default value for longer than a predefined period. When this occurs a failure is registered. If the problem occurs on two drive cycles then the MIL will illuminate.

Ambient Air Temperature Component/ System

Fault Code

AAT Sensor Stuck High P0071 AAT Sensor Stuck Low P0071 (ambr)

Land Rover

Monitoring Strategy Description

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Rationality with IAT

AAT Average (maximum of LH IAT average, RH IAT average & ECT average) Or (minimum of LH IAT average, RH IAT average & ECT averageAmbient Temp Average)

> see table

ECT at engine off - ECT at Engine start Difference between (maximum of RH IAT average, LH IAT average & ECT average) and (minimum of RH IAT average, LH IAT average & ECT average) Engine off time Block Heater

> 50 degC

> 20 degC

Revision Date: November 2010

Time Required

MIL 2 Drive Cycles

< 10 degC

>= 28800 s Not detected (see table for conditions)

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Ambient Air Temperature Component/ System

Fault Code

Monitoring Strategy Description

Malfunction Criteria

Secondary Parameter

Threshold value

Enable Conditions

Time Required

MIL

Fault Codes that disable P0113 P0112 P00AD P00AC P007D P007C P0118 P0071 P0117 P0643 P0642 P0073 P0072 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P2610 P2610 (mis) P2610 (hi) P2610 (lo) P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) AAT Sensor External Signal P0072 (hlamb) P0073

Circuit low Circuit high

Sensor voltage (< 0.11 V) Sensor voltage (> 4.94 V)

> 75 degC < -40 degC

Ignition on

2.21 s

2 Drive Cycles Fault Codes that disable P0643 P0642 P1603 P0606 (cnt) P0606 (cnt_s) P0604 P0072 & P0073 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

Ambient Temperature Fault Condition (TBD_AMBR_HIGHLEVEL) – DTC P0071 Inlet Air Temperature (degC)

-30

-10

5

20

Fault Threshold (degC)

30

30

25

20

5.32.2 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. Ensure that the engine has been stopped for at least 8 hours before engine start.

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5.33 Supercharger Intercooler Water Pump The air temperatures pre- and post-supercharger are monitored to ensure that the difference remains within the expected range.

Supercharger Intercooler Water Pump Monitoring Component/ System

Fault Code

Monitoring Strategy Description

Supercharger Intercooler Water Pump (supercharged engine only) Pump performance P2601 (wtp)

Rationality

Malfunction Criteria

Threshold value

Secondary Parameter

Enable Conditions

Time Required

MIL

Difference between post and presupercharger air temperatures for

> 55 to 90 degC > 30.7 s

Intake Air Temperature Engine Coolant Temperature Engine Oil Temperature

-20 <= IAT <= 80 degC 65 <= ECT <= 119.4 degC 40 <= EOT <= 140 degC 19 <= Vehicle Speed <= 155 mph for at least 59s

90 s

2 Drive Cycles

Vehicle speed

(this timer resets if: Engine Speed < 500 or > 6000 rpm Mass Airflow < 3.0 or > 350 g/s Vehicle speed > 155 or < 19 mph for > 59 s) Fault Codes that disable P0113 P0112 P00AD P00AC P007D P007C P0103 P2601 P0102 P010D P010C P0118 P0117 P0643 P0642 P0073 P0072 P007B (ris) P007B (dwn) P007B (scf) P0111 (hi) P0111 (lo) P0111 (stk) P00AB (hi) P00AB (lo) P00AB (stk) P0116 (hi) P0116 (lo) P0116 (stk) P0125 P0071 (hi) P0071 (lo) P0101 P010B P115D P1603 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0500 (ud) P0500 (qf) P0500 (ud_s) P0500 (qf_s)

If the above table does not include details of the following enabling conditions: - intake air temperature, engine coolant temperature, vehicle speed range, and time after engine start-up then the state of these parameters has no influence upon the execution of the monitor.

5.33.1 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. It isn't essential that this is from a cold start.

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5.34 High Range Enablement In common with other off-road vehicles, all Land Rovers except the LR2 and Range Rover Evoque are equipped with a 2-speed transfer box.

This provides a high range for use in normal conditions and a low range for use during extreme off-road driving.

During off-road driving the vehicle may be operated for extended periods at very low engine speeds and high loads. The vehicle may be required to wade through water of varying depth and temperature. There are often sudden shocks to the drive-train due to large rocks and similar objects.

In general, off-road operation can be far more varied and less predictable than normal, on-road driving.

Since OBD is primarily designed for passenger cars and passenger car usage patterns, Land Rover have made the engagement of high range an enablement criteria for the following OBD monitors in order to ensure reliable functioning of the OBD system: •

Catalyst Monitoring

•

Idle Speed Control Diagnostics

•

Oxygen Sensor Diagnostics

There is a rationality check for transfer box range engagement (DTC P2772) and this is described below.

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Component/System Low Range Gear Monitor (lrgm)

Fault Code

Malfunction Strategy Description

P2772

Rationality check of transfer box ratio vs. range position information Ratio calculated from transmission output shaft speed and vehicle speed from the ABS module

Malfunction Criteria Calculated ratio And range position Or Calculated ratio And range position

Threshold Value > 1.90 Not Low Range < 1.92 Not High Range

Secondary Parameters

Enable Conditions

Time R

Trans Output Shaft Speed Transfer Box

200 < Shaftspeed < 8000 rpm Not in Neutral or Gear change in progress 12 < V < 158 mph 3 (All wheel speed sensors OK) 0 (not in park or neutral) 3 (OK) Transmitting

30.7 s

Vehicle Speed Vehicle Speed Quality Factor Park Neutral Gear Lever Quality Factor TCU, ABS, DLCT

Fault Codes that disable P2772 U0300 U0121 U0101 U0402 (tsp) C0031 C0034 C0037 C003A U0402 (cs) U0402 (alive) P1603 P0610 P0606 (cnt) P0606 (cnt_s) P0604 (ramint) P0604 (ramint_s) P0605 (romint) P0605 (romint_s) P0604 (ramsht) P0604 (ramsht_s) P0605 (romcnt) P0605 (romcnt_s) P0605 (romexc) P0605 (romexc_s) P0606 (eci) P0606 (eci_s) P0606 (ssc) P0606 (ssc_s) P0606 (dupl) P0606 (dupl_s) P0605 (fmemo) P0605 (fmemo_s) P0606 (wdog) P0606 (wdog_s) P0607 P0601 P0601 (sub) P0501 P0501 (sub)

5.34.1 Drive Cycle Information Please refer to the "Generic OBD-II Drive Cycle" section. But include a period of operation in low range at a low vehicle speed.

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