Page 1

QUICK REFERENCE INDEX Edition: August 2006 Revision: December 2007 Publication No. SM7E-1J60U1

A GENERAL INFORMATION

GI

General Information

B ENGINE

EM

Engine Mechanical

LU

Engine Lubrication System

CO

Engine Cooling System

EC

Engine Control System

FL

Fuel System

EX

Exhaust System

ACC

Accelerator Control System

TRANSMISSION/ TRANSAXLE

AT

Automatic Transmission

D DRIVELINE/AXLE

TF

Transfer

PR

Propeller Shaft

FFD

Front Final Drive

RFD

Rear Final Drive

FAX

Front Axle

RAX

Rear Axle

FSU

Front Suspension

RSU

Rear Suspension

WT

Road Wheels & Tires

BR

Brake System

PB

Parking Brake System

BRC

Brake Control System

C

E SUSPENSION

F BRAKES

G STEERING

PS

Power Steering System

H RESTRAINTS

SB

Seat Belts

SRS

I

BODY

J AIR CONDITIONER K ELECTRICAL

BL

Body, Lock & Security System

GW

Glasses, Window System & Mirrors

RF

Roof

EI

Exterior & Interior

IP

Instrument Panel

SE

Seat

AP

Adjustable Pedal

ATC

Automatic Air Conditioner

SC

Starting & Charging System

LT

Lighting System

DI

Driver Information System

WW

Wiper, Washer & Horn

BCS

Body Control System

LAN

LAN System

AV ACS

L MAINTENANCE

Supplemental Restraint System (SRS)

Audio Visual, Navigation & Telephone System Auto Cruise Control System

PG

Power Supply, Ground & Circuit Elements

MA

Maintenance

© 2007 NISSAN NORTH AMERICA, INC. All rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any form, or by any means, electronic, mechanical, photo-copying, recording or otherwise, without the prior written permission of Nissan North America, Inc. -1

A B C D E F G H I J K L M


This manual contains maintenance and repair procedures for the 2007 INFINITI QX56. In order to assure your safety and the efficient functioning of the vehicle, this manual should be read thoroughly. It is especially important that the PRECAUTIONS in the GI section be completely understood before starting any repair task. All information in this manual is based on the latest product information at the time of publication. The right is reserved to make changes in specifications and methods at any time without notice.

IMPORTANT SAFETY NOTICE The proper performance of service is essential for both the safety of the technician and the efficient functioning of the vehicle. The service methods in this Service Manual are described in such a manner that the service may be performed safely and accurately. Service varies with the procedures used, the skills of the technician and the tools and parts available. Accordingly, anyone using service procedures, tools or parts which are not specifically recommended by NISSAN must first be completely satisfied that neither personal safety nor the vehicle’s safety will be jeopardized by the service method selected.

-2


QUICK REFERENCE CHART: QX56

2007

QUICK REFERENCE CHART: QX56 Engine Tune-Up Data

PFP:00000 ELS0028Z

Cylinder arrangement Displacement

cm

Bore and stroke

3

V-8 5,552 (338.80)

(cu in)

mm (in)

98 x 92 (3.86 x 3.62)

Valve arrangement

DOHC

Firing order

1-8-7-3-6-5-4-2

Number of piston rings

Compression

2

Oil

1

Number of main bearings

5

Compression ratio

9.8:1

Compression pressure

kPa (kg/cm2 , psi)/rpm

Standard

1,520 (15.5, 220)/200

Minimum

1,324 (13.5, 192)/200

Differential limit between cylinders

98 (1.0, 14)/200

Cylinder number

SEM957C

Valve timing

PBIC0187E

Unit: degree a

b

c

d

e

f

244°

232°

-8°

60°

10°

54°


QUICK REFERENCE CHART: QX56 2007 Drive Belt Deflection and Tension Tension of drive belts

Auto adjustment by auto tensioner

Spark Plug (Platinum Tipped) Make

NGK

Standard type

DIFR5A-11

Gap (nominal)

1.1 mm (0.043 in)

Front Wheel Alignment (Unladen*1 )

ELS00290

Drive type

2WD

4WD

Minimum

-0° 51′ (-0.85°)

-0° 33′ (-0.55°)

Nominal

-0° 6′ (-0.10°)

0° 12′ (0.20°)

Maximum

0° 39′ (0.65°)

0° 57′ (0.95°)

0° 45′ (0.75°) or less

0° 45′ (0.75°) or less

Minimum

3° 15′ (3.25°)

2° 45′ (2.75°)

Nominal

4° 0′ (4.00°)

3° 30′ (3.50°)

Maximum

4° 45′ (4.75°)

4° 15′ (4.25°)

0° 45′ (0.75°) or less

0° 45′ (0.75°) or less

13° 32′ (13.53°)

13°13′ (13.22°)

Minimum

1.8 mm (0.07 in)

1.8 mm (0.07 in)

Nominal

2.8 mm (0.11 in)

2.8 mm (0.11 in)

Maximum

3.8 mm (0.15 in)

3.8 mm (0.15 in)

Minimum

0° 3′ (0.05°)

0° 3′ (0.05°)

Nominal

0° 5′ (0.08°)

0° 5′ (0.08°)

Maximum

0° 7′ (0.12°)

0° 7′ (0.12°)

Inside Degree minute (decimal degree)

34° 31′ – 38° 31′ *2 (34.52° – 38.52°)

34° 44′ – 38° 44′ *4 (34.73° – 38.73°)

Outside Degree minute (decimal degree)

30° 59′ – 34° 59′ *3 (30.98° – 34.98°)

30° 29′ – 34° 29′ *5 (30.48° – 34.48°)

Camber Degree minute (decimal degree)

Cross camber

Caster Degree minute (decimal degree)

Cross caster Kingpin inclination Degree minute (decimal degree)

SFA234AC

Distance (A − B) Total toe-in Angle (left side and right side) Degree minute (decimal degree)

Wheel turning angle (full turn)

*1: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions. *2: Target value 37° 31′ (37.52°) *3: Target value 33° 59′ (33.98°) *4: Target value 37° 44′ (37.73°) *5: Target value 33° 29′ (33.48°)


QUICK REFERENCE CHART: QX56 2007

Rear Wheel Alignment

ELS00291

Camber Degree minute (decimal degree)

Minimum

0° 0′ (0°)

Nominal

- 0° 30′ (-0.5°)

Maximum

- 1° 0′ (-1.0°)

Cross camber

0° 45′ (0.75°)

SFA234AC

Distance (A - B) Toe-in Angle (left, right) Degree minute (decimal degree)

Minimum

0 mm (0 in)

Nominal

3.3 mm (0.130 in)

Maximum

6.6 mm (0.260 in)

Cross toe

2 mm (0.079 in)

Minimum

0° 0′ (0°)

Nominal

0° 7′ (0.11°)

Maximum

0° 14′ (0.22°)

Cross toe

0° 8′ (0.14°)

Brake

ELS00292

Unit: mm (in) Front brake

Brake model Rotor outer diameter × thickness Pad Length × width × thickness

Rear brake

AD41VA 350 x 30 (13.78 x 1.18) 151.6 x 56.5 x 12.0 (5.97 x 2.22 x 0.476)

Cylinder bore diameter

51 (2.01)

Brake model

AD14VE

Rotor outer diameter × thickness Pad Length × width × thickness Cylinder bore diameter Control valve

Valve model

Brake booster

Booster model Diaphragm diameter

Recommended brake fluid

320 x 14 (12.60 x 0.55) 83.0 x 33.0 x 8.5 (3.268 x 1.299 x 0.335) 48 (1.89) Electric brake force distribution C215T 215 (8.46) Refer to ! Hyper-link Error !


QUICK REFERENCE CHART: QX56 2007

Disc Brake - Repair Limits

ELS00293

Unit: mm (in) Front brake model Brake pad

AD41VA Standard thickness (new)

12.0 (0.476)

Repair limit thickness

1.0 (0.039)

Standard thickness (new)

30 (1.18)

Repair limit thickness

Disc rotor

28.5 (1.122)

Maximum uneven wear (measured at 8 positions)

0.015 (0.0006)

Runout limit (with it attached to the vehicle)

0.03 (0.001)

Rear brake model Brake pad

Disc rotor

AD14VE

Standard thickness (new)

12.13 mm (0.478 in)

Repair limit thickness

1.0 mm (0.039 in)

Standard thickness (new)

14.0 mm (0.551 in)

Repair limit thickness

12.0 mm (0.472 in)

Maximum uneven wear (measured at 8 positions)

0.015 mm (0.0006 in)

Runout limit (with it attached to the vehicle)

0.05 mm (0.002 in)

Brake Pedal

ELS00294

Unit: mm (in)

WFIA0160E

Free height "H" Depressed pedal height "D" [under a force of 490 N (50 kg-f, 110 lb-f) with engine running] Clearance between pedal stopper and threaded end of stop lamp switch and ASCD switch "C1 " or “C2 � Pedal play "A"

182.3 - 192.3 mm (7.18 - 7.57 in) More than 90.3 mm (3.55 in) 0.74 - 1.96 mm (0.029 - 0.077 in) 3 - 11 mm (0.12 - 0.43 in)


QUICK REFERENCE CHART: QX56 2007

Refill Capacities

ELS00295

Capacity (Approximate)

Description

Metric

US measure

Imp measure

105.8

28 gal

23 1/4 gal

With oil filter change

6.2

6 1/2 qt

5 1/2 qt

Without oil filter change

5.9

6 1/4 qt

5 1/4 qt

7.6

8 qt

6 3/4 qt

14.4

3 3/4 gal

3 1/8 gal

Automatic transmission fluid (ATF)

10.6

11 1/4 qt

9 3/8 qt

Rear final drive oil

1.75

3 3/4 pt

3 1/8 pt

Transfer fluid

3.0

3 1/8 qt

2 5/8 qt

Front final drive oil

1.6

3 3/8 pt

2 7/8 pt

Power steering fluid (PSF)

1.0

2 1/8 pt

1 3/4 pt

Windshield washer fluid

4.5

1 1/4 gal

1 gal

2.38 ± 0.11 lb

2.38 ± 0.11 lb

9.8 fl oz

10.2 fl oz

Fuel Engine oil (drain and refill) Dry engine (engine overhaul) Cooling system

Air conditioning system refrigerant Air conditioning system lubricants

With reservoir at MAX level

1.08 ± 0.05 kg 290 m


GENERAL INFORMATION

SECTION

GI

GENERAL INFORMATION

GI

B

C

D

E

CONTENTS SERVICE INFORMATION ............................ 2

Control Units and Electrical Parts ............................32

PRECAUTIONS ................................................... 2

CONSULT-II CHECKING SYSTEM .................. 35

Description ................................................................ 2 Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" ................................................................... 2 Precaution for NVIS/IVIS (NISSAN/INFINITI VEHICLE IMMOBILIZER SYSTEM - NATS) (If Equipped) .................................................................. 2 General Precaution ................................................... 3 Precaution for Three Way Catalyst ........................... 4 Precaution for Fuel (Unleaded Premium Gasoline Required) .................................................................. 4 Precaution for Multiport Fuel Injection System or Engine Control System ............................................. 5 Precaution for Hoses ................................................. 5 Precaution for Engine Oils ........................................ 6 Precaution for Air Conditioning ................................. 6

HOW TO USE THIS MANUAL ............................ 7 Description ................................................................ 7 Terms ........................................................................ 7 Units .......................................................................... 7 Relation between Illustrations and Descriptions ...... 7 Contents .................................................................... 8 Component ................................................................ 8 How to Follow Trouble Diagnosis .............................. 9 How to Read Wiring Diagram .................................. 13 Abbreviations .......................................................... 20

SERVICE INFORMATION FOR ELECTRICAL INCIDENT ...........................................................22

Description ...............................................................35 Function and System Application ............................35 Nickel Metal Hydride Battery Replacement .............36 Checking Equipment ...............................................36 CONSULT-II Start Procedure ..................................36 CONSULT-II Data Link Connector (DLC) Circuit ....38

LIFTING POINT ................................................. 40 Pantograph Jack ......................................................40 Garage Jack and Safety Stand ................................40 2-Pole Lift ................................................................40

G

H

I

J

TOW TRUCK TOWING ..................................... 42 Tow Truck Towing ...................................................42 Vehicle Recovery (Freeing a stuck vehicle) ............43

TIGHTENING TORQUE OF STANDARD BOLTS ............................................................... 44

K

Tightening Torque Table .........................................44

L

RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ............................................... 45

M

Recommended Chemical Product and Sealant .......45

IDENTIFICATION INFORMATION .................... 46 Model Variation ........................................................46 Identification Number ...............................................47 Dimensions ..............................................................48 Wheels & Tires ........................................................48

N

O

TERMINOLOGY ................................................ 50

How to Check Terminal ........................................... 22 How to Perform Efficient Diagnosis for an Electrical Incident .............................................................. 25

Revision: December 2007

F

GI-1

SAE J1930 Terminology List ...................................50

2007 QX56

P


PRECAUTIONS < SERVICE INFORMATION >

SERVICE INFORMATION PRECAUTIONS Description

INFOID:0000000003531468

Observe the following precautions to ensure safe and proper servicing. These precautions are not described in each individual section.

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

INFOID:0000000003531469

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS and SB section of this Service Manual. WARNING: • To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. • Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS section. • Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Precaution for NVIS/IVIS (NISSAN/INFINITI VEHICLE IMMOBILIZER SYSTEM NATS) (If Equipped)

INFOID:0000000003531470

NVIS/IVIS (NATS) will immobilize the engine if someone tries to start it without the registered key of NVIS/IVIS (NATS). Both of the originally supplied ignition key IDs have been NVIS/IVIS (NATS) registered. The security indicator is located on the instrument panel. The indicator blinks when the immobilizer system is functioning. Therefore, NVIS/IVIS (NATS) warns outsiders that the vehicle is equipped with the anti-theft system. • When NVIS/IVIS (NATS) detects trouble, the security indicator lamp lights up while ignition switch is in "ON" position. This lighting up indicates that the anti-theft is not functioning, so prompt service is required. • When servicing NVIS/IVIS (NATS) (trouble diagnoses, system initialization and additional registration of other NVIS/IVIS (NATS) ignition key IDs), CONSULT-II hardware and CONSULT-II NVIS/IVIS (NATS) software is necessary. Regarding the procedures of NVIS/IVIS (NATS) initialization and NVIS/IVIS (NATS) ignition key ID registration, refer to CONSULT-II operation manual, NVIS/IVIS (NATS). Therefore, CONSULT-II NVIS/IVIS (NATS) software (program card and operation manual) must be kept strictly confidential to maintain the integrity of the anti-theft function. • When servicing NVIS/IVIS (NATS) (trouble diagnoses, system initialization and additional registration of other NVIS/IVIS (NATS) ignition key IDs), it may be necessary to re-register original key identification. Therefore, be sure to receive all keys from vehicle owner. A maximum of four or five key IDs can be registered into NVIS/IVIS (NATS). • When failing to start the engine first time using the key of NVIS/IVIS (NATS), start as follows. 1. Leave the ignition key in "ON" position for approximately 5 seconds. 2. Turn ignition key to "OFF" or "LOCK" position and wait approximately 5 seconds. 3. Repeat step 1 and 2 again. 4. Restart the engine while keeping the key separate from any others on key-chain.

Revision: December 2007

GI-2

2007 QX56


PRECAUTIONS < SERVICE INFORMATION >

General Precaution

INFOID:0000000003531471

GI

• Do not operate the engine for an extended period of time without proper exhaust ventilation. Keep the work area well ventilated and free of any flammable materials. Special care should be taken when handling any flammable or poisonous materials, such as gasoline, refrigerant gas, etc. When working in a pit or other enclosed area, be sure to properly ventilate the area before working with hazardous materials. Do not smoke while working on the vehicle.

B

C

D SGI285

E

• Before jacking up the vehicle, apply wheel chocks or other tire blocks to the wheels to prevent the vehicle from moving. After jacking up the vehicle, support the vehicle weight with safety stands at the points designated for proper lifting before working on the vehicle. These operations should be done on a level surface. • When removing a heavy component such as the engine or transaxle/transmission, be careful not to lose your balance and drop them. Also, do not allow them to strike adjacent parts, especially the brake tubes and master cylinder.

F

G

SGI231

• Before starting repairs which do not require battery power: Turn off ignition switch. Disconnect the negative battery terminal. • If the battery terminals are disconnected, recorded memory of radio and each control unit is erased. • Battery posts, terminals and related accessories contain lead and lead compounds. Wash hands after handling.

H

I

J

K SEF289H

• To prevent serious burns: Avoid contact with hot metal parts. Do not remove the radiator cap when the engine is hot. • Dispose of or recycle drained oil or the solvent used for cleaning parts in an appropriate manner. • Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically. Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire. • Clean all disassembled parts in the designated liquid or solvent prior to inspection or assembly. • Replace oil seals, gaskets, packings, O-rings, locking washers, cotter pins, self-locking nuts, etc. with new ones. • Replace inner and outer races of tapered roller bearings and needle bearings as a set. • Arrange the disassembled parts in accordance with their assembled locations and sequence. • Do not touch the terminals of electrical components which use microcomputers (such as ECM). Static electricity may damage internal electronic components. • After disconnecting vacuum or air hoses, attach a tag to indicate the proper connection. • Use only the fluids and lubricants specified in this manual. • Use approved bonding agent, sealants or their equivalents when required. Revision: December 2007

GI-3

L

M

N

O SGI233

P

2007 QX56


PRECAUTIONS < SERVICE INFORMATION > • Use hand tools, power tools (disassembly only) and recommended special tools where specified for safe and efficient service repairs. • When repairing the fuel, oil, water, vacuum or exhaust systems, check all affected lines for leaks.

PBIC0190E

• Before servicing the vehicle: Protect fenders, upholstery and carpeting with appropriate covers. Take caution that keys, buckles or buttons do not scratch paint.

SGI234

WARNING: To prevent ECM from storing the diagnostic trouble codes, do not carelessly disconnect the harness connectors which are related to the engine control system and TCM (transmission control module) system. The connectors should be disconnected only when working according to the WORK FLOW of TROUBLE DIAGNOSES in EC and AT sections.

Precaution for Three Way Catalyst

INFOID:0000000003531472

If a large amount of unburned fuel flows into the catalyst, the catalyst temperature will be excessively high. To prevent this, follow the instructions. • Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst. • When checking for ignition spark or measuring engine compression, make tests quickly and only when necessary. • Do not run engine when the fuel tank level is low, otherwise the engine may misfire, causing damage to the catalyst. Do not place the vehicle on flammable material. Keep flammable material off the exhaust pipe and the three way catalyst.

Precaution for Fuel (Unleaded Premium Gasoline Required)

INFOID:0000000003531473

Use unleaded premium gasoline with an octane rating of at least 91 AKI (Anti-Knock Index) number (Research octane number 96). If unleaded premium gasoline is not available, unleaded regular gasoline with an octane rating of at least 87 AKI number (Research octane number 91) can be used, but only under the following precautions: • have the fuel tank filled only partially with unleaded regular gasoline, and fill up with unleaded premium gasoline as soon as possible. • avoid full throttle driving and abrupt acceleration. However, for maximum vehicle performance, the use of unleaded premium gasoline is recommended. CAUTION: Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Do not use E-85 fuel (85% fuel ethanol, 15% unleaded gasoline) unless the vehicle is specifically designed for E-85 fuel (i.e. Flexible Fuel Vehicle - FFV models). Using a fuel other than that specified could adversely affect the emission control devices and systems, and could also affect the warranty coverage validity.

Revision: December 2007

GI-4

2007 QX56


PRECAUTIONS < SERVICE INFORMATION >

Precaution for Multiport Fuel Injection System or Engine Control System

INFOID:0000000003531474

GI

• Before connecting or disconnecting any harness connector for the multiport fuel injection system or ECM: Turn ignition switch to “OFF” position. Disconnect negative battery terminal. Otherwise, there may be damage to ECM. • Before disconnecting pressurized fuel line from fuel pump to injectors, be sure to release fuel pressure. • Be careful not to jar components such as ECM and mass air flow sensor.

B

C

D SGI787

Precaution for Hoses

INFOID:0000000003531475

E

HOSE REMOVAL and INSTALLATION • To prevent damage to rubber hose, do not pry off rubber hose with tapered tool or screwdriver.

F

G

H

SMA019D

• To reinstall the rubber hose securely, make sure of hose insertion length and clamp orientation. (If tube is equipped with hose stopper, insert rubber hose into tube until it butts up against hose stopper.)

I

J

K

L SMA020D

HOSE CLAMPING

M

• If old rubber hose is re-used, install hose clamp in its original position (at the indentation where the old clamp was). If there is a trace of tube bulging left on the old rubber hose, align rubber hose at that position.

N

O

P SMA021D

• Discard old clamps; replace with new ones.

Revision: December 2007

GI-5

2007 QX56


PRECAUTIONS < SERVICE INFORMATION > • After installing leaf spring clamps, apply force to them in the direction of the arrow, tightening rubber hose equally all around.

SMA022D

Precaution for Engine Oils

INFOID:0000000003531476

Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.

HEALTH PROTECTION PRECAUTIONS • • • • • • • • • • • •

Avoid prolonged and repeated contact with oils, particularly used engine oils. Wear protective clothing, including impervious gloves where practicable. Do not put oily rags in pockets. Avoid contaminating clothes, particularly underpants, with oil. Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regularly. First aid treatment should be obtained immediately for open cuts and wounds. Use barrier creams, applying them before each work period, to help the removal of oil from the skin. Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Preparations containing lanolin replace the natural skin oils which have been removed. Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin. If skin disorders develop, obtain medical advice without delay. Where practical, degrease components prior to handling. Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face shields; in addition an eye wash facility should be provided.

Precaution for Air Conditioning

INFOID:0000000003531477

Use an approved refrigerant recovery unit any time the air conditioning system must be discharged. Refer to ATC-150, "HFC-134a (R-134a) Service Procedure" for specific instructions.

Revision: December 2007

GI-6

2007 QX56


HOW TO USE THIS MANUAL < SERVICE INFORMATION >

HOW TO USE THIS MANUAL

GI

Description

INFOID:0000000003531478

This volume explains “Removal, Disassembly, Installation, Inspection and Adjustment” and “Trouble Diagnoses”.

Terms

B

INFOID:0000000003531479

• The captions WARNING and CAUTION warn you of steps that must be followed to prevent personal injury and/or damage to some part of the vehicle. WARNING indicates the possibility of personal injury if instructions are not followed. CAUTION indicates the possibility of component damage if instructions are not followed. BOLD TYPED STATEMENTS except WARNING and CAUTION give you helpful information. Standard value:Tolerance at inspection and adjustment. Limit value:The maximum or minimum limit value that should not be exceeded at inspection and adjustment.

Units

C

D

E

INFOID:0000000003531480

• The UNITS given in this manual are primarily expressed as the SI UNIT (International System of Unit), and alternatively expressed in the metric system and in the yard/pound system. “Example” Outer Socket Lock Nut

G

: 59 - 78 N-m (6.0 - 8.0 kg-m, 43 - 58 ft-lb)

Relation between Illustrations and Descriptions

F

INFOID:0000000003531481

H

The following sample explains the relationship between the part description in an illustration, the part name in the text and the service procedures. I

J

K

L

M

N

O

P

SAIA0519E

Revision: December 2007

GI-7

2007 QX56


HOW TO USE THIS MANUAL < SERVICE INFORMATION >

Contents

INFOID:0000000003531482

• ALPHABETICAL INDEX is provided at the end of this manual so that you can rapidly find the item and page you are searching for. • A QUICK REFERENCE INDEX, a black tab (e.g. ) is provided on the first page. You can quickly find the first page of each section by matching it to the section's black tab. • THE CONTENTS are listed on the first page of each section. • THE TITLE is indicated on the upper portion of each page and shows the part or system. • THE PAGE NUMBER of each section consists of two or three letters which designate the particular section and a number (e.g. “BR-5”). • THE SMALL ILLUSTRATIONS show the important steps such as inspection, use of special tools, knacks of work and hidden or tricky steps which are not shown in the previous large illustrations. Assembly, inspection and adjustment procedures for the complicated units such as the automatic transaxle or transmission, etc. are presented in a step-by-step format where necessary.

Component

INFOID:0000000003531483

• THE LARGE ILLUSTRATIONS are exploded views (see the following) and contain tightening torques, lubrication points, section number of the PARTS CATALOG (e.g. SEC. 440) and other information necessary to perform repairs. The illustrations should be used in reference to service matters only. When ordering parts, refer to the appropriate PARTS CATALOG. Components shown in an illustration may be identified by a circled number. When this style of illustration is used, the text description of the components will follow the illustration.

SFIA2959E

1.

Union bolt

2.

Copper washer

3.

Brake hose

4.

Cap

5.

Bleed valve

6.

Sliding pin bolt

7.

Piston seal

Piston boot

8.

Piston

9.

10. Cylinder body

11.

Sliding pin

12. Torque member mounting bolt

13. Washer

14. Sliding pin boot

15. Bushing

16. Torque member

17. Inner shim cover

18. Inner shim

19. Inner pad

20. Pad retainer

21. Pad wear sensor

22. Outer pad

23. Outer shim

24. Outer shim cover

1: PBC (Poly Butyl Cuprysil) grease or silicone-based grease

2: Rubber grease

: Brake fluid

Refer to GI section for additional symbol definitions.

Revision: December 2007

GI-8

2007 QX56


HOW TO USE THIS MANUAL < SERVICE INFORMATION > SYMBOLS GI

B

C

D

E SAIA0749E

How to Follow Trouble Diagnosis

INFOID:0000000003531484

F

DESCRIPTION NOTICE: Trouble diagnoses indicate work procedures required to diagnose problems effectively. Observe the following instructions before diagnosing. 1. Before performing trouble diagnoses, read the “Preliminary Check”, the “Symptom Chart” or the “Work Flow”. 2. After repairs, re-check that the problem has been completely eliminated. 3. Refer to Component Parts and Harness Connector Location for the Systems described in each section for identification/location of components and harness connectors. 4. Refer to the Circuit Diagram for quick pinpoint check. If you need to check circuit continuity between harness connectors in more detail, such as when a sub-harness is used, refer to Wiring Diagram in each individual section and Harness Layout in PG section for identification of harness connectors. 5. When checking circuit continuity, ignition switch should be OFF. 6. Before checking voltage at connectors, check battery voltage. 7. After accomplishing the Diagnostic Procedures and Electrical Components Inspection, make sure that all harness connectors are reconnected as they were.

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES

SAIA0256E

1. 2.

Work and diagnostic procedure Start to diagnose a problem using procedures indicated in enclosed test groups. Questions and required results Questions and required results are indicated in bold type in test group. The meaning of are as follows: a. Battery voltage → 11 - 14V or approximately 12V b. Voltage : Approximately 0V → Less than 1V

3.

4.

Symbol used in illustration Symbols included in illustrations refer to measurements or procedures. Before diagnosing a problem, familiarize yourself with each symbol. Refer to "Connector Symbols" in GI Section and "KEY TO SYMBOLS SIGNIFYING MEASUREMENTS OR PROCEDURES" below. Action items Next action for each test group is indicated based on result of each question. Test group number is shown in the left upper portion of each test group.

HARNESS WIRE COLOR AND CONNECTOR NUMBER INDICATION There are two types of harness wire color and connector number indication. Type 1: Harness Wire Color And Connector Number Are Shown In Illustration

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > • Letter designations next to test meter probe indicate harness wire color. • Connector numbers in a single circle (e.g. M33) indicate harness connectors. • Connector numbers in a double circle indicate component connectors.

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Type 2: Harness Wire Color And Connector Number Are Shown In Text H

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > KEY TO SYMBOLS SIGNIFYING MEASUREMENTS OR PROCEDURES

SAIA0750E

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > GI

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How to Read Wiring Diagram

INFOID:0000000003531485

CONNECTOR SYMBOLS

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > Most of connector symbols in wiring diagrams are shown from the terminal side. • Connector symbols shown from the terminal side are enclosed by a single line and followed by the direction mark. • Connector symbols shown from the harness side are enclosed by a double line and followed by the direction mark. • Certain systems and components, especially related to OBD, may use a new style slide-locking type harness connector. For description and how to disconnect, refer to PG-66.

SGI364

• Male and female terminals Connector guides for male terminals are shown in black and female terminals in white in wiring diagrams.

SGI363

SAMPLE/WIRING DIAGRAM - EXAMPL -

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > • For detail, refer to following “DESCRIPTION”. GI

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > Optional Splice

SGI942

DESCRIPTION Number

Item

Description

1

Power condition

• This shows the condition when the system receives battery positive voltage (can be operated).

2

Fusible link

• The double line shows that this is a fusible link. • The open circle shows current flow in, and the shaded circle shows current flow out.

3

Fusible link/fuse location

• This shows the location of the fusible link or fuse in the fusible link or fuse box. For arrangement, refer to PG section, POWER SUPPLY ROUTING.

4

Fuse

• The single line shows that this is a fuse. • The open circle shows current flow in, and the shaded circle shows current flow out.

5

Current rating

• This shows the current rating of the fusible link or fuse.

6

Connectors

• This shows that connector E3 is female and connector M1 is male. • The G/R wire is located in the 1A terminal of both connectors. • Terminal number with an alphabet (1A, 5B, etc.) indicates that the connector is SMJ connector. Refer to PG section, SMJ (SUPER MULTIPLE JUNCTION).

7

Optional splice

• The open circle shows that the splice is optional depending on vehicle application.

8

Splice

• The shaded circle shows that the splice is always on the vehicle.

9

Page crossing

• This arrow shows that the circuit continues to an adjacent page. • The A will match with the A on the preceding or next page.

10

Common connector

• The dotted lines between terminals show that these terminals are part of the same connector.

11

Option abbreviation

• This shows that the circuit is optional depending on vehicle application.

12

Relay

• This shows an internal representation of the relay. For details, refer to PG section, STANDARDIZED RELAY.

13

Connectors

• This shows that the connector is connected to the body or a terminal with bolt or nut.

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > Number

Item

Description

GI

• This shows a code for the color of the wire.

14

Wire color

BR = Brown OR or O = Orange P = Pink PU or V (Violet) = Purple GY or GR = Gray SB = Sky Blue CH = Dark Brown DG = Dark Green

B = Black W = White R = Red G = Green L = Blue Y = Yellow LG = Light Green

B

C

When the wire color is striped, the base color is given first, followed by the stripe color as shown below: Example: L/W = Blue with White Stripe

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Option description

• This shows a description of the option abbreviation used on the page.

16

Switch

• This shows that continuity exists between terminals 1 and 2 when the switch is in the A position. Continuity exists between terminals 1 and 3 when the switch is in the B position.

17

Assembly parts

• Connector terminal in component shows that it is a harness incorporated assembly.

18

Cell code

• This identifies each page of the wiring diagram by section, system and wiring diagram page number.

19

Current flow arrow

• Arrow indicates electric current flow, especially where the direction of standard flow (vertically downward or horizontally from left to right) is difficult to follow. • A double arrow “ operation.

” shows that current can flow in either direction depending on circuit

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System branch

• This shows that the system branches to another system identified by cell code (section and system).

Page crossing

• This arrow shows that the circuit continues to another page identified by cell code. • The C will match with the C on another page within the system other than the next or preceding pages.

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Shielded line

• The line enclosed by broken line circle shows shield wire.

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Component box in wave line

• This shows that another part of the component is also shown on another page (indicated by wave line) within the system.

24

Component name

• This shows the name of a component.

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Connector number

• This shows the connector number. • The letter shows which harness the connector is located in. • Example: M: main harness. For detail and to locate the connector, refer to PG section "Main Harness", “Harness Layout”. A coordinate grid is included for complex harnesses to aid in locating connectors.

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Ground (GND)

• The line spliced and grounded under wire color shows that ground line is spliced at the grounded connector.

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27

Ground (GND)

• This shows the ground connection. For detailed ground distribution information, refer to "Ground Distribution" in PG section.

28

Connector views

• This area shows the connector faces of the components in the wiring diagram on the page.

29

Common component

• Connectors enclosed in broken line show that these connectors belong to the same component. • This shows a code for the color of the connector. For code meaning, refer to wire color codes, Number 14 of this chart.

30

Connector color

31

Fusible link and fuse box

• This shows the arrangement of fusible link(s) and fuse(s), used for connector views of "POWER SUPPLY ROUTING" in PG section. The open square shows current flow in, and the shaded square shows current flow out.

32

Reference area

• This shows that more information on the Super Multiple Junction (SMJ) and Joint Connectors (J/C) exists on the PG section. Refer to "Reference Area" for details.

Harness Indication

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > • Letter designations next to test meter probe indicate harness (connector) wire color. • Connector numbers in a single circle M33 indicate harness connectors.

AGI070

Component Indication Connector numbers in a double circle F211 indicate component connectors. Switch Positions Switches are shown in wiring diagrams as if the vehicle is in the “normal” condition. A vehicle is in the “normal” condition when: • ignition switch is “OFF”, • doors, hood and trunk lid/back door are closed, • pedals are not depressed, and • parking brake is released.

SGI860

Detectable Lines and Non-Detectable Lines In some wiring diagrams, two kinds of lines, representing wires, with different weight are used.

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > • A line with regular weight (wider line) represents a “detectable line for DTC (Diagnostic Trouble Code)”. A “detectable line for DTC” is a circuit in which ECM can detect its malfunctions with the on board diagnostic system. • A line with less weight (thinner line) represents a “non-detectable line for DTC”. A “non-detectable line for DTC” is a circuit in which ECM cannot detect its malfunctions with the on board diagnostic system.

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Multiple Switch The continuity of multiple switch is described in two ways as shown below. • The switch chart is used in schematic diagrams. • The switch diagram is used in wiring diagrams.

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SGI875

Reference Area

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > The Reference Area of the wiring diagram contains references to additional electrical reference pages at the end of the manual. If connector numbers and titles are shown in the Reference Area of the wiring diagram, these connector symbols are not shown in the Connector Area.

SGI092A

Abbreviations

INFOID:0000000003531486

The following ABBREVIATIONS are used: ABBREVIATION A/C

DESCRIPTION Air Conditioner

A/T

Automatic Transaxle/Transmission

ATF

Automatic Transmission Fluid

D1

Drive range 1st gear

D2

Drive range 2nd gear

D3

Drive range 3rd gear

D4

Drive range 4th gear

FR, RR

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Front, Rear

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HOW TO USE THIS MANUAL < SERVICE INFORMATION > ABBREVIATION LH, RH

DESCRIPTION

GI

Left-Hand, Right-Hand

M/T

Manual Transaxle/Transmission

OD

Overdrive

B

P/S

Power Steering

SAE

Society of Automotive Engineers, Inc.

SDS

Service Data and Specifications

SST

Special Service Tools

2WD

2-Wheel Drive

22

2nd range 2nd gear

21

2nd range 1st gear

12

1st range 2nd gear

11

1st range 1st gear

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION >

SERVICE INFORMATION FOR ELECTRICAL INCIDENT How to Check Terminal

INFOID:0000000003531487

CONNECTOR AND TERMINAL PIN KIT Use the connector and terminal pin kits listed below when replacing connectors or terminals. The connector and terminal pin kits contain some of the most commonly used NISSAN/INFINITI connectors and terminals. For detailed connector and terminal pin replacement procedures, refer to the latest NISSAN/ INFINITI CONNECTOR AND TERMINAL PIN SERVICE MANUAL. Tool number (Kent-Moore No.) Tool name (J38751-95NI) Connector and terminal pin kit (NISSAN) (J38751-95INF) Connector and terminal pin kit (INFINITI) (J42992-98KIT) OBD and terminal repair kit (J42992-2000UPD) OBD-II Connector Kit Update

Description

WAIA0004E

WAIA0005E

HOW TO PROBE CONNECTORS Connector damage and an intermittent connection can result from improperly probing of the connector during circuit checks. The probe of a digital multimeter (DMM) may not correctly fit the connector cavity. To correctly probe the connector, follow the procedures below using a “T” pin. For the best contact grasp the “T” pin using an alligator clip. Probing from Harness Side Standard type (not waterproof type) connector should be probed from harness side with “T” pin. • If the connector has a rear cover such as a ECM connector, remove the rear cover before probing the terminal. • Do not probe waterproof connector from harness side. Damage to the seal between wire and connector may result.

SGI841

Probing from Terminal Side FEMALE TERMINAL • There is a small notch above each female terminal. Probe each terminal with the “T” pin through the notch. Do not insert any object other than the same type male terminal into female terminal.

SEL265V

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > • Some connectors do not have a notch above each terminal. To probe each terminal, remove the connector retainer to make contact space for probing.

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SEL266V

MALE TERMINAL Carefully probe the contact surface of each terminal using a “T” pin. Do not bend terminal.

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How to Check Enlarged Contact Spring of Terminal An enlarged contact spring of a terminal may create intermittent signals in the circuit. If the intermittent open circuit occurs, follow the procedure below to inspect for open wires and enlarged contact spring of female terminal. 1. Assemble a male terminal and approx. 10 cm (3.9 in) of wire. Use a male terminal which matches the female terminal. 2. Disconnect the suspected faulty connector and hold it terminal side up.

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3.

M

While holding the wire of the male terminal, try to insert the male terminal into the female terminal. Do not force the male terminal into the female terminal with your hands.

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SEL271V

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > 4. While moving the connector, check whether the male terminal can be easily inserted or not.

SEL272V

• If the male terminal can be easily inserted into the female terminal, replace the female terminal.

SEL273V

Waterproof Connector Inspection If water enters the connector, it can short interior circuits. This may lead to intermittent problems. Check the following items to maintain the original waterproof characteristics.

RUBBER SEAL INSPECTION • Most waterproof connectors are provided with a rubber seal between the male and female connectors. If the seal is missing, the waterproof performance may not meet specifications. • The rubber seal may come off when connectors are disconnected. Whenever connectors are reconnected, make sure the rubber seal is properly installed on either side of male or female connector.

SEL275V

WIRE SEAL INSPECTION The wire seal must be installed on the wire insertion area of a waterproof connector. Be sure that the seal is installed properly. Terminal Lock Inspection Check for unlocked terminals by pulling wire at the end of connector. An unlocked terminal may create intermittent signals in the circuit.

SEL330V

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION >

How to Perform Efficient Diagnosis for an Electrical Incident

INFOID:0000000003531488

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WORK FLOW B

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G STEP

DESCRIPTION Get detailed information about the conditions and the environment when the incident occurred. The following are key pieces of information required to make a good analysis:

STEP 1

WHAT

Vehicle Model, Engine, Transmission/Transaxle and the System (i.e. Radio).

WHEN

Date, Time of Day, Weather Conditions, Frequency.

WHERE

Road Conditions, Altitude and Traffic Situation.

HOW

System Symptoms, Operating Conditions (Other Components Interaction). Service History and if any After Market Accessories have been installed.

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STEP 2

Operate the system, road test if necessary. Verify the parameter of the incident. If the problem cannot be duplicated, refer to “Incident Simulation Tests”.

STEP 3

Get the proper diagnosis materials together including: • Power Supply Routing • System Operation Descriptions • Applicable Service Manual Sections • Check for any Service Bulletins Identify where to begin diagnosis based upon your knowledge of the system operation and the customer comments.

STEP 4

Inspect the system for mechanical binding, loose connectors or wiring damage. Determine which circuits and components are involved and diagnose using the Power Supply Routing and Harness Layouts.

STEP 5

Repair or replace the incident circuit or component.

STEP 6

Operate the system in all modes. Verify the system works properly under all conditions. Make sure you have not inadvertently created a new incident during your diagnosis or repair steps.

INCIDENT SIMULATION TESTS Introduction Sometimes the symptom is not present when the vehicle is brought in for service. If possible, re-create the conditions present at the time of the incident. Doing so may help avoid a No Trouble Found Diagnosis. The following section illustrates ways to simulate the conditions/environment under which the owner experiences an electrical incident. The section is broken into the six following topics: • Vehicle vibration • Heat sensitive • Freezing • Water intrusion • Electrical load Revision: December 2007

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > • Cold or hot start up Get a thorough description of the incident from the customer. It is important for simulating the conditions of the problem. Vehicle Vibration The problem may occur or become worse while driving on a rough road or when engine is vibrating (idle with A/C on). In such a case, you will want to check for a vibration related condition. Refer to the following illustration.

CONNECTORS & HARNESS Determine which connectors and wiring harness would affect the electrical system you are inspecting. Gently shake each connector and harness while monitoring the system for the incident you are trying to duplicate. This test may indicate a loose or poor electrical connection. HINT Connectors can be exposed to moisture. It is possible to get a thin film of corrosion on the connector terminals. A visual inspection may not reveal this without disconnecting the connector. If the problem occurs intermittently, perhaps the problem is caused by corrosion. It is a good idea to disconnect, inspect and clean the terminals on related connectors in the system. SENSORS & RELAYS Gently apply a slight vibration to sensors and relays in the system you are inspecting. This test may indicate a loose or poorly mounted sensor or relay.

SGI839

ENGINE COMPARTMENT There are several reasons a vehicle or engine vibration could cause an electrical complaint. Some of the things to check for are: • Connectors not fully seated. • Wiring harness not long enough and is being stressed due to engine vibrations or rocking. • Wires laying across brackets or moving components. • Loose, dirty or corroded ground wires. • Wires routed too close to hot components. To inspect components under the hood, start by verifying the integrity of ground connections. (Refer to Ground Inspection described later.) First check that the system is properly grounded. Then check for loose connection by gently shaking the wiring or components as previously explained. Using the wiring diagrams inspect the wiring for continuity. BEHIND THE INSTRUMENT PANEL An improperly routed or improperly clamped harness can become pinched during accessory installation. Vehicle vibration can aggravate a harness which is routed along a bracket or near a screw.

UNDER SEATING AREAS An unclamped or loose harness can cause wiring to be pinched by seat components (such as slide guides) during vehicle vibration. If the wiring runs under seating areas, inspect wire routing for possible damage or pinching. Heat Sensitive

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > The customer's concern may occur during hot weather or after car has sat for a short time. In such cases you will want to check for a heat sensitive condition. To determine if an electrical component is heat sensitive, heat the component with a heat gun or equivalent. Do not heat components above 60°C (140°F). If incident occurs while heating the unit, either replace or properly insulate the component.

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Freezing The customer may indicate the incident goes away after the car warms up (winter time). The cause could be related to water freezing somewhere in the wiring/electrical system. There are two methods to check for this. The first is to arrange for the owner to leave his car overnight. Make sure it will get cold enough to demonstrate his complaint. Leave the car parked outside overnight. In the morning, do a quick and thorough diagnosis of those electrical components which could be affected. The second method is to put the suspect component into a freezer long enough for any water to freeze. Reinstall the part into the car and check for the reoccurrence of the incident. If it occurs, repair or replace the component.

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Water Intrusion The incident may occur only during high humidity or in rainy/snowy weather. In such cases the incident could be caused by water intrusion on an electrical part. This can be simulated by soaking the car or running it through a car wash. Do not spray water directly on any electrical components.

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Electrical Load The incident may be electrical load sensitive. Perform diagnosis with all accessories (including A/C, rear window defogger, radio, fog lamps) turned on.

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Cold or Hot Start Up On some occasions an electrical incident may occur only when the car is started cold, or it may occur when the car is restarted hot shortly after being turned off. In these cases you may have to keep the car overnight to make a proper diagnosis.

CIRCUIT INSPECTION Introduction In general, testing electrical circuits is an easy task if it is approached in a logical and organized method. Before beginning it is important to have all available information on the system to be tested. Also, get a thorRevision: December 2007

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > ough understanding of system operation. Then you will be able to use the appropriate equipment and follow the correct test procedure. You may have to simulate vehicle vibrations while testing electrical components. Gently shake the wiring harness or electrical component to do this. OPEN

A circuit is open when there is no continuity through a section of the circuit. There are two types of shorts.

SHORT

• SHORT CIRCUIT

When a circuit contacts another circuit and causes the normal resistance to change.

• SHORT TO GROUND

When a circuit contacts a ground source and grounds the circuit.

NOTE: Refer to “How to Check Terminal” to probe or check terminal. Testing for “Opens” in the Circuit Before you begin to diagnose and test the system, you should rough sketch a schematic of the system. This will help you to logically walk through the diagnosis process. Drawing the sketch will also reinforce your working knowledge of the system.

SGI846-A

CONTINUITY CHECK METHOD The continuity check is used to find an open in the circuit. The digital multimeter (DMM) set on the resistance function will indicate an open circuit as over limit (no beep tone or no ohms symbol). Make sure to always start with the DMM at the highest resistance level. To help in understanding the diagnosis of open circuits, please refer to the previous schematic. • Disconnect the battery negative cable. • Start at one end of the circuit and work your way to the other end. (At the fuse block in this example) • Connect one probe of the DMM to the fuse block terminal on the load side. • Connect the other probe to the fuse block (power) side of SW1. Little or no resistance will indicate that portion of the circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over limit or infinite resistance condition. (point A) • Connect the probes between SW1 and the relay. Little or no resistance will indicate that portion of the circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over limit or infinite resistance condition. (point B) • Connect the probes between the relay and the solenoid. Little or no resistance will indicate that portion of the circuit has good continuity. If there were an open in the circuit, the DMM would indicate an over limit or infinite resistance condition. (point C) Any circuit can be diagnosed using the approach in the previous example. VOLTAGE CHECK METHOD To help in understanding the diagnosis of open circuits please refer to the previous schematic. In any powered circuit, an open can be found by methodically checking the system for the presence of voltage. This is done by switching the DMM to the voltage function. • Connect one probe of the DMM to a known good ground. • Begin probing at one end of the circuit and work your way to the other end. • With SW1 open, probe at SW1 to check for voltage. voltage; open is further down the circuit than SW1. no voltage; open is between fuse block and SW1 (point A). • Close SW1 and probe at relay. voltage; open is further down the circuit than the relay. no voltage; open is between SW1 and relay (point B). Revision: December 2007

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > • Close the relay and probe at the solenoid. voltage; open is further down the circuit than the solenoid. no voltage; open is between relay and solenoid (point C). Any powered circuit can be diagnosed using the approach in the previous example.

GI

Testing for “Shorts” in the Circuit To simplify the discussion of shorts in the system, please refer to the following schematic.

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RESISTANCE CHECK METHOD • Disconnect the battery negative cable and remove the blown fuse. • Disconnect all loads (SW1 open, relay disconnected and solenoid disconnected) powered through the fuse. • Connect one probe of the DMM to the load side of the fuse terminal. Connect the other probe to a known good ground. • With SW1 open, check for continuity. continuity; short is between fuse terminal and SW1 (point A). no continuity; short is further down the circuit than SW1. • Close SW1 and disconnect the relay. Put probes at the load side of fuse terminal and a known good ground. Then, check for continuity. continuity; short is between SW1 and the relay (point B). no continuity; short is further down the circuit than the relay. • Close SW1 and jump the relay contacts with jumper wire. Put probes at the load side of fuse terminal and a known good ground. Then, check for continuity. continuity; short is between relay and solenoid (point C). no continuity; check solenoid, retrace steps. VOLTAGE CHECK METHOD • Remove the blown fuse and disconnect all loads (i.e. SW1 open, relay disconnected and solenoid disconnected) powered through the fuse. • Turn the ignition key to the ON or START position. Verify battery voltage at the battery + side of the fuse terminal (one lead on the battery + terminal side of the fuse block and one lead on a known good ground). • With SW1 open and the DMM leads across both fuse terminals, check for voltage. voltage; short is between fuse block and SW1 (point A). no voltage; short is further down the circuit than SW1. • With SW1 closed, relay and solenoid disconnected and the DMM leads across both fuse terminals, check for voltage. voltage; short is between SW1 and the relay (point B). no voltage; short is further down the circuit than the relay. • With SW1 closed, relay contacts jumped with fused jumper wire check for voltage. voltage; short is down the circuit of the relay or between the relay and the disconnected solenoid (point C). no voltage; retrace steps and check power to fuse block. Ground Inspection Ground connections are very important to the proper operation of electrical and electronic circuits. Ground connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can become an unwanted resistance. This unwanted resistance can change the way a circuit works. Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drastically affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even when the ground connection looks clean, there can be a thin film of rust on the surface. When inspecting a ground connection follow these rules: • Remove the ground bolt or screw. • Inspect all mating surfaces for tarnish, dirt, rust, etc. Revision: December 2007

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > • Clean as required to assure good contact. • Reinstall bolt or screw securely. • Inspect for “add-on” accessories which may be interfering with the ground circuit. • If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one eyelet make sure no ground wires have excess wire insulation. For detailed ground distribution information, refer to “Ground Distribution” in PG section.

SGI853

Voltage Drop Tests Voltage drop tests are often used to find components or circuits which have excessive resistance. A voltage drop in a circuit is caused by a resistance when the circuit is in operation. Check the wire in the illustration. When measuring resistance with DMM, contact by a single strand of wire will give reading of 0 ohms. This would indicate a good circuit. When the circuit operates, this single strand of wire is not able to carry the current. The single strand will have a high resistance to the current. This will be picked up as a slight voltage drop. Unwanted resistance can be caused by many situations as follows: • Undersized wiring (single strand example) • Corrosion on switch contacts • Loose wire connections or splices. If repairs are needed always use wire that is of the same or larger gauge.

MEASURING VOLTAGE DROP — ACCUMULATED METHOD • Connect the DMM across the connector or part of the circuit you want to check. The positive lead of the DMM should be closer to power and the negative lead closer to ground. • Operate the circuit. • The DMM will indicate how many volts are being used to “push” current through that part of the circuit.

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SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > Note in the illustration that there is an excessive 4.1 volt drop between the battery and the bulb. GI

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SGI974

MEASURING VOLTAGE DROP — STEP-BY-STEP The step-by-step method is most useful for isolating excessive drops in low voltage systems (such as those in “Computer Controlled Systems”). Circuits in the “Computer Controlled System” operate on very low amperage. The (Computer Controlled) system operations can be adversely affected by any variation in resistance in the system. Such resistance variation may be caused by poor connection, improper installation, improper wire gauge or corrosion. The step by step voltage drop test can identify a component or wire with too much resistance.

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SAIA0258E

N

Control Unit Circuit Test System Description:When the switch is ON, the control unit lights up the lamp. O

P

MGI034A

INPUT-OUTPUT VOLTAGE CHART Revision: December 2007

GI-31

2007 QX56


SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > Pin No.

Item

1

Switch

2

Lamp

Voltage value [V]

Condition

In case of high resistance such as single strand [V] *

Switch ON

Battery voltage

Lower than battery voltage Approx. 8 (Example)

Switch OFF

Approx. 0

Approx. 0

Switch ON

Battery voltage

Approx. 0 (Inoperative lamp)

Switch OFF

Approx. 0

Approx. 0

The voltage value is based on the body ground. *:If high resistance exists in the switch side circuit (caused by a single strand), terminal 1 does not detect battery voltage. Control unit does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not supply power to light up the lamp.

MGI035A

INPUT-OUTPUT VOLTAGE CHART Pin No.

Item

1

Lamp

2

Switch

Voltage value [V]

Condition

In case of high resistance such as single strand [V] *

Switch ON

Approx. 0

Battery voltage (Inoperative lamp)

Switch OFF

Battery voltage

Battery voltage

Switch ON

Approx. 0

Higher than 0 Approx. 4 (Example)

Switch OFF

Approx. 5

Approx. 5

The voltage value is based on the body ground. *:If high resistance exists in the switch side circuit (caused by a single strand), terminal 2 does not detect approx. 0V. Control unit does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not control ground to light up the lamp.

Control Units and Electrical Parts

INFOID:0000000003531489

PRECAUTIONS • Never reverse polarity of battery terminals. • Install only parts specified for a vehicle. • Before replacing the control unit, check the input and output and functions of the component parts. • Do not apply excessive force when disconnecting a connector. • If a connector is installed by tightening bolts, loosen bolt mounting it, then take it out by hand.

SAIA0251E

Revision: December 2007

GI-32

2007 QX56


SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > • Before installing a connector, make sure the terminal is not bent or damaged, and then correctly connect it. When installing a connector by tightening bolts, fix it by tightening the mounting bolt until the painted projection of the connector becomes even with the surface.

GI

B

C SAIA0252E

D

• For removal of the lever type connector, pull the lever up to the direction pointed to by the arrow A in the figure, and then remove the connector.

E

F

G SAIA0253E

H

• For installation of the lever type connector, pull down the lever to the direction pointed by the arrow B in the figure, and then push the connector until a clicking noise is heard.

I

J

SAIA0254E

• Do not apply excessive shock to the control unit by dropping or hitting it. • Be careful to prevent condensation in the control unit due to rapid temperature changes and do not let water or rain get on it. If water is found in the control unit, dry it fully and then install it in the vehicle. • Be careful not to let oil to get on the control unit connector. • Avoid cleaning the control unit with volatile oil. • Do not disassemble the control unit, and do not remove the upper and lower covers.

K

L

M

N

SAIA0255E

O

P

Revision: December 2007

GI-33

2007 QX56


SERVICE INFORMATION FOR ELECTRICAL INCIDENT < SERVICE INFORMATION > • When using a DMM, be careful not to let test probes get close to each other to prevent the power transistor in the control unit from damaging battery voltage because of short circuiting. • When checking input and output signals of the control unit, use the specified check adapter.

SEF348N

SMJ INSTALLATION To install SMJ, tighten bolts until orange “fulltight” mark appears and then retighten to specified torque as required. SMJ

:3 - 5 N·m (0.3 - 0.5 kg-m, 26 - 43 in-lb)

CAUTION: Do not overtighten bolts, otherwise, they may be damaged.

CEL969

Revision: December 2007

GI-34

2007 QX56


CONSULT-II CHECKING SYSTEM < SERVICE INFORMATION >

CONSULT-II CHECKING SYSTEM

GI

Description

INFOID:0000000003531490

• CONSULT-II is a hand-held type tester. When it is connected with a diagnostic connector equipped on the vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various kinds of diagnostic tests. • Refer to “CONSULT-II Software Operation Manual” for more information.

Function and System Application

NVIS (NATS BCM OR S/ENT)*2

NVIS (NATS)*2

HVAC

ALL MODE AWD/4WD

AIR LEVELIZER

AUTO DRIVE POS.

REARVIEW CAMERA

BCM

AIR BAG

IPDM E/R

ICC*1 ABS

A/T

Function

Work support

This mode enables a technician to adjust some devices faster and more accurately by following the indications on CONSULT-II.

x

x

x

x

-

-

x

x

x

x

x

-

-

-

Self-diagnostic

Self-diagnostic can be performed quickly.

-

-

-

-

x

-

-

-

-

-

-

-

-

-

Self-diagnostic results

Self-diagnostic results can be read and erased quickly.

x

x

x

x

-

x

x

x

-

x

x

x

x

x

Trouble diagnostic record

Current self-diagnostic results and all trouble diagnostic records previously stored can be read.

-

-

-

-

x

-

-

-

-

-

-

-

-

-

Data monitor

Input/Output data in the ECM can be read.

x

x

x

x

-

x

-

x

x

x

x

x

-

-

Data monitor (spec)

Data monitor specification can be read.

x

-

-

-

-

-

-

-

-

-

-

-

-

-

CAN diagnosis support monitor

The communication condition of CAN communication line can be read.

x

x

x

x

-

x

x

x

-

-

x

x

-

-

Active test

Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also shifts some parameters in a specified range.

x

-

x

x

-

x

-

x

-

x

-

-

-

-

Function test

This mode can show results of self-diagnosis of ECU with either “OK” or “NG”. For engines, more practical tests regarding sensors/switches and/or actuators are available.

x

x

-

x

x

-

-

-

-

-

-

-

-

-

DTC & SRT confirmation

The results of SRT (System Readiness Test) and the selfdiagnosis status/result can be confirmed.

x

-

-

-

-

-

-

-

-

-

-

-

-

-

DTC work support

The operating condition to confirm Diagnosis Trouble Codes can be selected.

x

x

-

-

-

-

-

-

-

-

-

-

-

-

ECM/ECU part number

ECM/ECU part number can be read.

x

x

x

-

-

x

x

x

x

x

-

-

ECU discriminated No.

Classification number of a replacement ECU can be read to prevent an incorrect ECU from being installed.

-

-

-

-

x

-

-

-

-

-

-

-

-

-

Passenger Airbag

Displays the STATUS (readiness) of the front passenger air bag.

-

-

-

-

x

-

-

-

-

-

-

-

-

-

Configuration

Sets control module parameters to match vehicle options.

-

-

-

-

-

-

x

-

-

-

-

-

-

-

PIN read*3

This mode shows the BCM-specific 5-digit code.

-

-

-

-

-

-

-

-

-

-

-

-

-

x

Control unit

All registered ignition key IDs in NATS components can be initialized and new IDs can be registered.

-

-

-

-

-

-

-

-

-

-

-

-

x

-

initialization*3

E

F

G

I

J

K

L

x

x

*1: If equipped.

GI-35

D

H

x: Applicable.

Revision: December 2007

C

INFOID:0000000003531491

ENGINE

Diagnostic test mode

B

2007 QX56

M

N

O

P


CONSULT-II CHECKING SYSTEM < SERVICE INFORMATION > *2: IVIS (NATS) [Infiniti Vehicle Immobilizer System (Nissan Anti-Theft System)]. *3: This system is shown with IVIS (NATS) using program card AEN06B or later.

Nickel Metal Hydride Battery Replacement

INFOID:0000000003531492

CONSULT-II contains a nickel metal hydride battery. When replacing the battery obey the following: WARNING: Replace the nickel metal hydride battery with Genuine CONSULT-II battery only. Use of another battery may present a risk of fire or explosion. The battery may present a fire or chemical burn hazard ifmistreated. Do not recharge, disassemble or dispose of in fire. Keep the battery out of reach of children and discard used battery conforming to the local regulations.

Checking Equipment

INFOID:0000000003531493

When ordering the below equipment, contact your NISSAN distributor. Tool name

Description

NISSAN CONSULT-II (J-44200) 1. CONSULT-II unit (Tester internal soft: Resident Version 3.4.0) and accessories. 2. Program card UED06E-1 and AEN06B (for NATS) or later, to confirm the best combination of these software, refer to CONSULT-II Operation Manual. 3. CONSULT-II CONVERTER. 4. CONSULT-II pigtail cable.

SAIA0363E

CAUTION: • Previous CONSULT-II “I” and “Y” DLC-I and DLC-II cables should NOT be used anymore because their DDL connector pins can be damaged during cable swapping. • If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self- diagnosis depending on control unit which carries out CAN communication. • If CONSULT-II CONVERTER is not connected with CONSULT-II, the vehicle enters “FAIL SAFE MODE” which will “LIGHT UP the HEAD LIGHT” and /or “COOLING FAN ROTATING” when CONSULTII is started. NOTE: • The CONSULT-II must be used in conjunction with a program card. CONSULT-II does not require loading (Initialization) procedure. • Be sure the CONSULT-II is turned OFF before installing or removing a program card.

CONSULT-II Start Procedure

INFOID:0000000003531494

NOTE: Turning ignition switch off when performing CAN diagnosis could cause CAN memory to be erased. 1. Connect CONSULT-II and CONSULT-II CONVERTER to the data link connector.

PAIA0070E

Revision: December 2007

GI-36

2007 QX56


CONSULT-II CHECKING SYSTEM < SERVICE INFORMATION > 2. If necessary, turn on the ignition switch. 3. Touch “START (NISSAN BASED VHCL)” or system shortcut (eg: ENGINE) on the screen.

GI

B

C

4.

Touch necessary system on "SELECT SYSTEM" screen. If necessary system is not indicated, check power supply and ground of system control unit. If it is normal, refer to GI-38, "CONSULT-II Data Link Connector (DLC) Circuit".

BCIA0029E

D

E

F

BCIA0030E

5.

Select the desired part to be diagnosed on the "SELECT DIAG MODE" screen.

G

H

I

J BCIA0031E

K

L

M

N

O

P

Revision: December 2007

GI-37

2007 QX56


CONSULT-II CHECKING SYSTEM < SERVICE INFORMATION >

CONSULT-II Data Link Connector (DLC) Circuit

INFOID:0000000003531495

WAWA0015E

INSPECTION PROCEDURE If the CONSULT-II cannot diagnose the system properly, check the following items:

Revision: December 2007

GI-38

2007 QX56


CONSULT-II CHECKING SYSTEM < SERVICE INFORMATION > Symptom

Check item

GI

CONSULT-II cannot access any system.

• CONSULT-II DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4). For detailed circuit, refer to EC-643, "Wiring Diagram". • CONSULT-II DLC cable and CONSULT-II CONVERTER.

CONSULT-II cannot access individual system. (Other systems can be accessed.)

• CONSULT-II program card (Check the appropriate CONSULT-II program card for the system. Refer to GI-36, "Checking Equipment". • Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wiring diagram for each system). • Open or short circuit between the system and CONSULT-II DLC (For detailed circuit, refer to wiring diagram for each system). • Open or short circuit in CAN or K communication line. Refer to LAN-7.

NOTE: The preceding schematic is an example and may not be a true representation of the vehicle. The actual DDL1 circuits (CAN lines) from DLC pins 6 and 14 as well as the DDL2 circuit (K-line) from DLC pin 7 may be connected to more than one system. A short in a DDL circuit connected to a control unit in one system may affect CONSULT-II access to other systems.

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Revision: December 2007

GI-39

2007 QX56


LIFTING POINT < SERVICE INFORMATION >

LIFTING POINT Pantograph Jack

INFOID:0000000003531496

WARNING: • Never get under the vehicle while it is supported only by the jack. Always use safety stands to support the frame when you have to get under the vehicle. • Place wheel chocks at both front and back of the wheels on the ground.

LAIA0042E

Garage Jack and Safety Stand

INFOID:0000000003531497

CAUTION: Place a wooden or rubber block between safety stand and vehicle body when the supporting body is flat.

WAIA0028E

2-Pole Lift

INFOID:0000000003531498

WARNING: • When lifting the vehicle, open the lift arms as wide as possible and ensure that the front and rear of the vehicle are well balanced.

Revision: December 2007

GI-40

2007 QX56


LIFTING POINT < SERVICE INFORMATION > â&#x20AC;¢ When setting the lift arm, do not allow the arm to contact the brake tubes, brake cable, or fuel lines. GI

B

C

D

E

WAIA0029E

F

G

H

I

J

K

L

M

N

O

P

Revision: December 2007

GI-41

2007 QX56


TOW TRUCK TOWING < SERVICE INFORMATION >

TOW TRUCK TOWING Tow Truck Towing

INFOID:0000000003531499

WARNING: • Never get under the vehicle while it is supported only by the jack. Always use safety stands to support the frame when you have to get under the vehicle. • Place wheel chocks at both front and back of the wheels on the ground. CAUTION: • All applicable State or Provincial (in Canada) laws and local laws regarding the towing operation must be obeyed. • It is necessary to use proper towing equipment to avoid possible damage during towing operation. Towing is in accordance with Towing Procedure Manual at dealer. • Always attach safety chains before towing. • When towing, make sure that the transmission, steering system and powertrain are in good order. If any unit is damaged, dollies must be used. • Never tow an automatic transmission model from the rear (i.e., backward) with four wheels on the ground as this may cause serious and expensive damage to the transmission.

WAIA0030E

2WD MODELS INFINITI does not recommend towing automatic transmission equipped vehicles with the drive wheels on the ground. CAUTION: • When towing with the front wheels on the ground: Turn the ignition key to the OFF position and move the transmission selector lever to N (neutral) position, turn the ignition key to OFF position and secure the steering wheel in a straight ahead position with a rope or similar device. Never place the ignition key in the LOCK position. This will result in damage to the steering lock mechanism.

WAIA0031E

4WD MODELS

Revision: December 2007

GI-42

2007 QX56


TOW TRUCK TOWING < SERVICE INFORMATION > INFINITI does not recommend towing automatic transmission equipped vehicles with the drive wheels on the ground. CAUTION: • Never tow 4WD models with any of the wheels on the ground as this may cause serious and expensive damage to the transfer case and transmission.

GI

B

C

D

E

F

G WAIA0032E

Towing Point CAUTION: Never tow the vehicle using only the towing points. To avoid damaging the vehicle body, use proper towing equipment when towing.

H

I

J

K WAIA0055E

Vehicle Recovery (Freeing a stuck vehicle)

INFOID:0000000003531500

• Tow chains or cables must be attached only to the main structural members of the vehicle or the towing hooks (if so equipped). Otherwise, the vehicle body will be damaged. • Use the towing hook (if so equipped) only to free a vehicle stuck in sand, snow, mud, etc. Never tow the vehicle for a long distance using only the towing hook. • The towing hook is under tremendous force when used to free a stuck vehicle. Never pull the hook at an angle. • Always pull the cable straight out from the front or rear of the vehicle. • Pulling devices should be routed so they do not touch any part of the suspension, steering, brake, or cooling systems. • Pulling devices such as ropes or canvas straps are not recommended for use in vehicle towing or recovery. WARNING: • Stand clear of a stuck vehicle. • Do not spin your tires at high speed. This could cause them to explode and result in serious injury. Parts of your vehicle could also overheat and be damaged.

Revision: December 2007

GI-43

2007 QX56

L

M

N

O

P


TIGHTENING TORQUE OF STANDARD BOLTS < SERVICE INFORMATION >

TIGHTENING TORQUE OF STANDARD BOLTS Tightening Torque Table

Grade

4T

7T

9T

Bolt size

Bolt diameter * mm

INFOID:0000000003531501

Tightening torque (Without lubricant) Pitch mm

Hexagon head bolt N·m

M6

6.0

M8

8.0

M10

10.0

M12

12.0

1.25

M14

14.0

1.5

M6

6.0

1.0

M8

8.0

M10

10.0

M12

12.0

M14

kg-m

Hexagon flange bolt

ft-lb

in-lb

N·m

kg-m

ft-lb

in-lb

1.0

5.5

0.56

4

49

7

0.71

5

62

1.25

13.5

1.4

10

17

1.7

13

1.0

13.5

1.4

10

17

1.7

13

1.5

28

2.9

21

35

3.6

26

1.25

28

2.9

21

35

3.6

26

1.75

45

4.6

33

55

5.6

41

45

4.6

33

65

6.6

48

80

8.2

59

100

10

74

9

0.92

7

80

11

1.1

8

97

1.25

22

2.2

16

28

2.9

21

1.0

22

2.2

16

28

2.9

21

1.5

45

4.6

33

55

5.6

41

1.25

45

4.6

33

55

5.6

41

1.75

80

8.2

59

100

10

74

1.25

80

8.2

59

100

10

74

14.0

1.5

130

13

96

170

17

125

M6

6.0

1.0

11

1.1

8

13.5

1.4

10

M8

8.0

1.25

28

2.9

21

35

3.6

26

1.0

28

2.9

21

35

3.6

26

M10

10.0

1.5

55

5.6

41

80

8.2

59

1.25

55

5.6

41

80

8.2

59

M12

12.0

1.75

100

10

74

130

13

96

1.25

100

10

74

130

13

96

M14

14.0

1.5

170

17

125

210

21

155

*: Nominal diameter 1.

Special parts are excluded.

2.

This standard is applicable to bolts having the following marks embossed on the bolt head.

MGI044A

Revision: December 2007

GI-44

2007 QX56


RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS < SERVICE INFORMATION >

RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS Recommended Chemical Product and Sealant

GI INFOID:0000000003531502

Refer to the following chart for help in selecting the appropriate chemical product or sealant.

1

2

3

Product Description

Purpose

Rear View Mirror Adhesive

Used to permanently remount rear view mirrors to windows.

Anaerobic Liquid Gasket

For metal-to-metal flange sealing. Can fill a 0.38 mm (0.015 inch) gap and provide instant sealing for most powertrain applications.

High Performance Thread Sealant

Provides instant sealing on any threaded straight or parallel threaded fitting. (Thread sealant only, no locking ability.) • Do not use on plastic.

Gasket Maker 4

Nissan North America Part No. (USA) 999MP-AM000P

6

99998-50505

999MP-AM001P

99998-50503

Medium Strength Thread Locking Sealant (Blue)

Threadlocker

Threadlocker (service tool removable)

C

Permatex 81844

Permatex 51813 and 51817

E

F 999MP-AM002P

999MP-AM002P

Permatex 56521

G

999MP-AM003P (Ultra Grey)

99998-50506 (Ultra Grey)

Silicone RTV

High Temperature, High Strength Thread Locking Sealant (Red)

Aftermarket Crossreference Part Nos.

D

Gasket Maker for Maxima/ Quest 5-speed automatic transmission (RE5F22A)

5

Nissan Canada Part No. (Canada)

B

999MP-AM004P

999MP-AM005P

Permatex Ultra Grey 82194; Three Bond 1207,1215, 1216, 1217F, 1217G and 1217H Nissan RTV Part No. 999MP-A7007

H

I

Three Bond 1281B or exact equivalent in its quality

J

K

999MP-AM004P

Permatex 27200; Three Bond 1360, 1360N, 1305 N&P, 1307N, 1335, 1335B, 1363B, 1377C, 1386B, D&E and 1388 Loctite 648

999MP-AM005P

Permatex 24200, 24206, 24240, 24283 and 09178; Three Bond 1322, 1322N, 1324 D&N, 1333D, 1361C, 1364D, 1370C and 1374

L

M

N

O

P

Revision: December 2007

GI-45

2007 QX56


IDENTIFICATION INFORMATION < SERVICE INFORMATION >

IDENTIFICATION INFORMATION Model Variation Drive Type 2WD 4WD

INFOID:0000000003531503

Body

Engine

Transmission

Destination

Grade

Wagon

VK56DE

RE5R05A (5A/T)

U.S.A.

LE

Wagon

VK56DE

RE5R05A (5A/T)

U.S.A. Canada

LE

Model JPKALVK-EUA JPKWLVK-EUA JPKWLVK-ENA

Prefix and suffix designations:

Position

Character

1

J

2 3

PK

Qualifier

Definition

Body type

J: Wagon

Engine

PK: VK56DE A: 2WD

4

A

Axle

5

L

Drive

L: LH

6

V

Grade

V: LE

7

K

Transmission

K: RE5R05A (5A/T)

I46

Model

I46: 2007 QX56

11

E

Intake

E: EGI

12

U

Zone

13

A

Equipment

A: Standard

Option Codes

Option Codes

W: 4WD

8 9 10

N: Canada U: Federal

14 15 16

XXXXX

17 18

Revision: December 2007

GI-46

2007 QX56


IDENTIFICATION INFORMATION < SERVICE INFORMATION >

Identification Number

INFOID:0000000003531504

GI

B

C

D

E

F WAIA0053E

1.

Emission control information label

2.

Tire placard

4.

Vehicle identification number plate

5.

Vacuum hose diagram

3.

F.M.V.S.S. certification label

VEHICLE IDENTIFICATION NUMBER ARRANGEMENT Position

Character

Qualifier

H Definition

I

1 2

G

5N3

Manufacturer

5N3: USA produced multi-purpose vehicle

3 4

A

Engine type

A: VK56DE

5

A

Vehicle line

A: Infiniti QX56

6

0

Model change

(0-9)

7

8

Body type

8: 4 door wagon A: 2WD, 4-wheel ABS, Class E

J

K

8

A

Gross vehicle weight rating

9

*

Check digit

(0 to 9 or X) The code for the check digit is determined by a mathematical computation.

10

7

Model year

2007

11

N

Manufacturing plant

N: Canton Mississippi

Vehicle serial number

Chassis number

L

B: 4WD, 4-wheel ABS, Class E

M

N

12 13 14 15

XXXXX

O

16

P

17

Revision: December 2007

GI-47

2007 QX56


IDENTIFICATION INFORMATION < SERVICE INFORMATION > ENGINE SERIAL NUMBER

LAIA0044E

TRANSFER SERIAL NUMBER

LAIA0048E

AUTOMATIC TRANSMISSION NUMBER

PAIA0054E

Dimensions

INFOID:0000000003531505

Unit: mm (in)

Drive type

2WD

4WD

Overall length

5255 (206.9)

5255 (206.9)

Overall width

2001 (78.8)

2001 (78.8)

Overall height (with roof rack)

1976.8 (77.0)

1997.7 (77.8)

Front tread width

1725 (67.9)

1725 (67.9)

Rear tread width

1725 (67.9)

1725 (67.9)

Wheelbase

3130 (123.2)

3130 (123.2)

With standard undercover

254.8 (10.03)

273.7 (10.77)

With oil pan skid plate

250.5 (9.86)

269.5 (10.61)

Minimum Running Ground Clearance (at front suspension)

Wheels & Tires

Revision: December 2007

INFOID:0000000003531506

GI-48

2007 QX56


IDENTIFICATION INFORMATION < SERVICE INFORMATION > Drive Type All

Grade

Road wheel

Tire

Spare tire size

LE

7-Spoke 18x8J Chromium Aluminum Alloy

P265/70R18

P265/70R18

GI

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Revision: December 2007

GI-49

2007 QX56


TERMINOLOGY < SERVICE INFORMATION >

TERMINOLOGY SAE J1930 Terminology List

INFOID:0000000003531507

All emission related terms used in this publication in accordance with SAE J1930 are listed. Accordingly, new terms, new acronyms/abbreviations and old terms are listed in the following chart. NEW ACRONYM / ABBREVIATION

NEW TERM

OLD TERM

Air cleaner

ACL

Air cleaner

Barometric pressure

BARO

***

Barometric pressure sensor-BCDD

BAROS-BCDD

BCDD

Camshaft position

CMP

***

Camshaft position sensor

CMPS

Crank angle sensor

Canister

***

Canister

Carburetor

CARB

Carburetor

Charge air cooler

CAC

Intercooler

Closed loop

CL

Closed loop

Closed throttle position switch

CTP switch

Idle switch

Clutch pedal position switch

CPP switch

Clutch switch

Continuous fuel injection system

CFI system

***

Continuous trap oxidizer system

CTOX system

***

Crankshaft position

CKP

***

Crankshaft position sensor

CKPS

***

Data link connector

DLC

***

Data link connector for CONSULT-II

DLC for CONSULT-II

Diagnostic connector for CONSULT-II

Diagnostic test mode

DTM

Diagnostic mode

Diagnostic test mode selector

DTM selector

Diagnostic mode selector

Diagnostic test mode I

DTM I

Mode I

Diagnostic test mode II

DTM II

Mode II

Diagnostic trouble code

DTC

Malfunction code

Direct fuel injection system

DFI system

***

Distributor ignition system

DI system

Ignition timing control

Early fuel evaporation-mixture heater

EFE-mixture heater

Mixture heater

Early fuel evaporation system

EFE system

Mixture heater control

Electrically erasable programmable read only memory

EEPROM

***

Electronic ignition system

EI system

Ignition timing control

Engine control

EC

***

Engine control module

ECM

ECCS control unit

Engine coolant temperature

ECT

Engine temperature

Engine coolant temperature sensor

ECTS

Engine temperature sensor

Engine modification

EM

***

Engine speed

RPM

Engine speed

Erasable programmable read only memory

EPROM

***

Evaporative emission canister

EVAP canister

Canister

Evaporative emission system

EVAP system

Canister control solenoid valve

Exhaust gas recirculation valve

EGR valve

EGR valve

Revision: December 2007

GI-50

2007 QX56


TERMINOLOGY < SERVICE INFORMATION > NEW ACRONYM / ABBREVIATION

NEW TERM

OLD TERM

Exhaust gas recirculation control-BPT valve

EGRC-BPT valve

BPT valve

Exhaust gas recirculation control-solenoid valve

EGRC-solenoid valve

EGR control solenoid valve

Exhaust gas recirculation temperature sensor EGRT sensor

GI

B

Exhaust gas temperature sensor

C

D

EGR temperature sensor Flash electrically erasable programmable read only memory

FEEPROM

***

Flash erasable programmable read only memory

FEPROM

***

Flexible fuel sensor

FFS

***

Flexible fuel system

FF system

***

Fuel pressure regulator

***

Pressure regulator

Fuel pressure regulator control solenoid valve

***

PRVR control solenoid valve

Fuel trim

FT

***

Heated Oxygen sensor

HO2S

Exhaust gas sensor

Idle air control system

IAC system

Idle speed control

Idle air control valve-air regulator

IACV-air regulator

Air regulator

Idle air control valve-auxiliary air control valve

IACV-AAC valve

Auxiliary air control (AAC) valve

Idle air control valve-FICD solenoid valve

IACV-FICD solenoid valve

FICD solenoid valve

Idle air control valve-idle up control solenoid valve

IACV-idle up control solenoid valve

Idle up control solenoid valve

Idle speed control-FI pot

ISC-FI pot

FI pot

Idle speed control system

ISC system

***

Ignition control

IC

***

Ignition control module

ICM

***

Indirect fuel injection system

IFI system

***

Intake air

IA

Air

Intake air temperature sensor

IAT sensor

Air temperature sensor

Knock

***

Detonation

Knock sensor

KS

Detonation sensor

Malfunction indicator lamp

MIL

Check engine light

Manifold absolute pressure

MAP

***

Manifold absolute pressure sensor

MAPS

***

Manifold differential pressure

MDP

***

Manifold differential pressure sensor

MDPS

***

E

F

G

H

I

J

K

L

M

N

O

Manifold surface temperature

MST

***

Manifold surface temperature sensor

MSTS

***

Manifold vacuum zone

MVZ

***

Manifold vacuum zone sensor

MVZS

***

Mass air flow sensor

MAFS

Air flow meter

Mixture control solenoid valve

MC solenoid valve

Air-fuel ratio control solenoid valve

Multiport fuel injection System

MFI system

Fuel injection control

Revision: December 2007

GI-51

P

2007 QX56


TERMINOLOGY < SERVICE INFORMATION > NEW ACRONYM / ABBREVIATION

NEW TERM

OLD TERM

Nonvolatile random access memory

NVRAM

***

On board diagnostic system

OBD system

Self-diagnosis

Open loop

OL

Open loop

Oxidation catalyst

OC

Catalyst

Oxidation catalytic converter system

OC system

***

Oxygen sensor

O2S

Exhaust gas sensor

Park position switch

***

Park switch

Park/neutral position switch

PNP switch

Park/neutral switch Inhibitor switch Neutral position switch

Periodic trap oxidizer system

PTOX system

***

Positive crankcase ventilation

PCV

Positive crankcase ventilation

Positive crankcase ventilation valve

PCV valve

PCV valve

Powertrain control module

PCM

***

Programmable read only memory

PROM

***

Pulsed secondary air injection control solenoid valve

PAIRC solenoid valve

AIV control solenoid valve

Pulsed secondary air injection system

PAIR system

Air induction valve (AIV) control

Pulsed secondary air injection valve

PAIR valve

Air induction valve

Random access memory

RAM

***

Read only memory

ROM

***

Scan tool

ST

***

Secondary air injection pump

AIR pump

***

Secondary air injection system

AIR system

***

Sequential multiport fuel injection system

SFI system

Sequential fuel injection

Service reminder indicator

SRI

***

Simultaneous multiport fuel injection system

***

Simultaneous fuel injection

Smoke puff limiter system

SPL system

***

Supercharger

SC

***

Supercharger bypass

SCB

***

System readiness test

SRT

***

Thermal vacuum valve

TVV

Thermal vacuum valve

Three way catalyst

TWC

Catalyst

Three way catalytic converter system

TWC system

***

Three way + oxidation catalyst

TWC + OC

Catalyst

Three way + oxidation catalytic converter system

TWC + OC system

***

Throttle body

TB

Throttle chamber SPI body

Throttle body fuel injection system

TBI system

Fuel injection control

Throttle position

TP

Throttle position

Throttle position sensor

TPS

Throttle sensor

Throttle position switch

TP switch

Throttle switch

Torque converter clutch solenoid valve

TCC solenoid valve

Lock-up cancel solenoid Lock-up solenoid

Revision: December 2007

GI-52

2007 QX56


TERMINOLOGY < SERVICE INFORMATION > NEW ACRONYM / ABBREVIATION

NEW TERM

OLD TERM

Transmission control module

TCM

A/T control unit

Turbocharger

TC

Turbocharger

Vehicle speed sensor

VSS

Vehicle speed sensor

Volume air flow sensor

VAFS

Air flow meter

Warm up oxidation catalyst

WU-OC

Catalyst

Warm up oxidation catalytic converter system

WU-OC system

***

Warm up three way catalyst

WU-TWC

Catalyst

Warm up three way catalytic converter sysWU-TWC system tem

***

Wide open throttle position switch

Full switch

WOTP switch

GI

B

C

D

E

***: Not applicable

F

G

H

I

J

K

L

M

N

O

P

Revision: December 2007

GI-53

2007 QX56


ENGINE

SECTION

EM

ENGINE MECHANICAL

A

EM

C

D

E

CONTENTS SERVICE INFORMATION ............................ 3

Removal and Installation .........................................21

PRECAUTIONS ................................................... 3

OIL PAN AND OIL STRAINER ......................... 24

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" ................................................................... 3 Precaution for Drain Engine Coolant ......................... 3 Precaution for Disconnecting Fuel Piping ................. 3 Precaution for Removal and Disassembly ................ 3 Precaution for Inspection, Repair and Replacement .......................................................................... 3 Precaution for Assembly and Installation .................. 3 Parts Requiring Angular Tightening .......................... 4 Precaution for Liquid Gasket ..................................... 4

PREPARATION ................................................... 6 Special Service Tool ................................................. 6 Commercial Service Tool .......................................... 8

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING ............................10

Removal and Installation .........................................24 Removal and Installation .........................................28

SPARK PLUG ................................................... 29 FUEL INJECTOR AND FUEL TUBE ................ 31 ROCKER COVER ............................................. 35 Removal and Installation .........................................35 Exploded View .........................................................37 Removal and Installation .........................................38

CAMSHAFT ....................................................... 46

Removal and Installation of Valve Oil Seal ..............61 Removal and Installation of Front Oil Seal ..............61 Removal and Installation of Rear Oil Seal ...............62

Removal and Installation ......................................... 12

DRIVE BELTS ....................................................13

Revision: December 2007

K

L

M

N

CYLINDER HEAD ............................................. 64 On-Vehicle Service ..................................................64 Removal and Installation .........................................65 Disassembly and Assembly .....................................67 Inspection After Disassembly ..................................69

AIR CLEANER AND AIR DUCT ........................15

EXHAUST MANIFOLD AND THREE WAY CATALYST .........................................................21

J

TIMING CHAIN .................................................. 37

OIL SEAL .......................................................... 61

Removal and Installation ......................................... 17

I

Removal and Installation .........................................31

ENGINE ROOM COVER ....................................12

INTAKE MANIFOLD ...........................................17

H

Removal and Installation .........................................29

Removal and Installation .........................................46 Inspection after Installation ......................................55 Valve Clearance ......................................................56

Removal and Installation ......................................... 15 Removal and Installation (Viscous paper type) ....... 15

G

IGNITION COIL ................................................. 28

NVH Troubleshooting - Engine Noise ..................... 10 Use the Chart Below to Help You Find the Cause of the Symptom ....................................................... 11

Checking Drive Belts ............................................... 13 Removal and Installation ......................................... 13 Drive Belt Auto Tensioner and Idler Pulley ............. 14

F

ENGINE ASSEMBLY ........................................ 74 Removal and Installation .........................................74

CYLINDER BLOCK ........................................... 78

EM-1

Disassembly and Assembly .....................................78 How to Select Piston and Bearing ...........................86

2007 QX56

O

P


Inspection After Disassembly ................................. 93

SERVICE DATA AND SPECIFICATIONS (SDS) ................................................................ 103 Standard and Limit ................................................ 103

Revision: December 2007

EM-2

2007 QX56


PRECAUTIONS < SERVICE INFORMATION >

SERVICE INFORMATION

A

PRECAUTIONS Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

EM

INFOID:0000000003531508

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS and SB section of this Service Manual. WARNING: • To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. • Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS section. • Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Precaution for Drain Engine Coolant

INFOID:0000000003531509

C

D

E

F

G

H

Drain engine coolant when engine is cooled.

Precaution for Disconnecting Fuel Piping

INFOID:0000000003531510

• Before starting work, make sure no fire or spark producing items are in the work area. • Release fuel pressure before disconnecting and disassembly. • After disconnecting pipes, plug openings to stop fuel leakage.

Precaution for Removal and Disassembly

J INFOID:0000000003531511

• When instructed to use special service tools, use the specified tools. Always be careful to work safely, avoid forceful or uninstructed operations. • Exercise maximum care to avoid damage to mating or sliding surfaces. • Cover openings of engine system with tape or the equivalent, if necessary, to seal out foreign materials. • Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly. • When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be used where noted in the step.

Precaution for Inspection, Repair and Replacement

I

INFOID:0000000003531512

K

L

M

N

Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and replace if necessary.

Precaution for Assembly and Installation

O INFOID:0000000003531513

• Use torque wrench to tighten bolts or nuts to specification. • When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified, do exactly as specified. • Replace with new gasket, packing, oil seal or O-ring. • Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for any restriction and blockage. • Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust. Before assembly, oil sliding surfaces well. Revision: December 2007

EM-3

2007 QX56

P


PRECAUTIONS < SERVICE INFORMATION > • Release air within route when refilling after draining engine coolant. • Before starting engine, apply fuel pressure to fuel lines with turning ignition switch ON (with engine stopped). Then make sure that there are no leaks at fuel line connections. • After repairing, start engine and increase engine speed to check engine coolant, fuel, oil, and exhaust systems for leakage.

Parts Requiring Angular Tightening

INFOID:0000000003531514

• For final tightening of the following engine parts use Tool: Tool number

: KV10112100 (BT-8653-A)

-

Cylinder head bolts Main bearing cap bolts Connecting rod cap bolts Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angle tightening) • Do not use a torque value for final tightening. • The torque value for these parts are for a preliminary step. • Ensure thread and seat surfaces are clean and lightly coated with engine oil.

Precaution for Liquid Gasket

INFOID:0000000003531515

REMOVAL OF LIQUID GASKET SEALING • After removing the bolts and nuts, separate the mating surface and remove the old liquid gasket sealing using Tool. Tool number

: KV10111100 (J-37228)

CAUTION: Do not damage the mating surfaces. • Tap the seal cutter to insert it. • In areas where the Tool is difficult to use, lightly tap to slide it. WBIA0566E

LIQUID GASKET APPLICATION PROCEDURE 1.

2.

Remove the old liquid gasket adhering to the gasket application surface and the mating surface using suitable tool. • Remove the liquid gasket completely from the groove of the liquid gasket application surface, bolts, and bolt holes. Thoroughly clean the mating surfaces and remove adhering moisture, grease and foreign material.

PBIC0003E

3.

Attach the liquid gasket tube to the Tool. Tool number

4.

: WS39930000 (

)

Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-45, "Recommended Chemical Product and Sealant". Apply the liquid gasket without breaks to the specified location with the specified dimensions.

WBIA0567E

Revision: December 2007

EM-4

2007 QX56


PRECAUTIONS < SERVICE INFORMATION > • If there is a groove for the liquid gasket application, apply the liquid gasket to the groove. • As for the bolt holes, normally apply the liquid gasket inside the holes. If specified in the procedure, it should also be applied outside the holes. • Within five minutes of liquid gasket application, install the mating component. • If the liquid gasket protrudes, wipe it off immediately. • Do not retighten after the installation. • Wait 30 minutes or more after installation before refilling the engine with engine oil and engine coolant. CAUTION: If there are specific instructions in this manual, observe them.

A

EM

C SEM159F

D

E

F

G

H

I

J

K

L

M

N

O

P

Revision: December 2007

EM-5

2007 QX56


PREPARATION < SERVICE INFORMATION >

PREPARATION Special Service Tool

INFOID:0000000003531516

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name

Description

KV10111100 (J-37228) Seal cutter

Removing steel oil pan and rear timing chain case

S-NT046

Loosening or tightening air fuel ratio A/F sensor a: 22 mm (0.87 in)

— (J-44626) Air fuel sensor Socket

LBIA0444E

Inspecting compression pressure

EG15050500 (J-45402) Compression gauge adapter

ZZA1225D

KV10116200 (J-26336-A) Valve spring compressor 1. KV10115900 (J-26336-20) Attachment 2. KV10109220 ( — ) Adapter

Disassembling valve mechanism Part (1) is a component of KV10116200 26336-A), but part (2) is not.

(J-

PBIC1650E

Tightening bolts for cylinder head, main bearing cap and connecting rod cap

KV10112100 (BT-8653-A) Angle wrench

S-NT014

Removing valve oil seal

KV10107902 (J-38959) Valve oil seal puller

S-NT011

Revision: December 2007

EM-6

2007 QX56


PREPARATION < SERVICE INFORMATION > Tool number (Kent-Moore No.) Tool name

Description

KV10115600 (J-38958) Valve oil seal drift

Installing valve oil seal Use side A. a: 20 (0.79) dia. d: 8 (0.31) dia. b: 13 (0.51) dia. e: 10.7 (0.421) dia. c: 10.3 (0.406) dia. f: 5 (0.20) dia. Unit: mm (in)

A

EM

C

S-NT603

Installing piston assembly into cylinder bore

EM03470000 (J-8037) Piston ring compressor

D

E

F

S-NT044

Removing crankshaft pilot bushing

ST16610001 (J-23907) Pilot bushing puller

G

H S-NT045

Pressing the tube of liquid gasket

WS39930000 ( — ) Tube presser

I

J

S-NT052

Removing and installing crankshaft pulley

— (J-47245) Ring gear stopper

K

L

M LBIA0451E

Removing fuel tube quick connectors in engine room (Available in SEC. 164 of PARTS CATALOG: Part No. 16441 6N210)

16441 6N210 (J-45488) Quick connector release

N

O PBIC0198E

P

Releasing drive belt tension

— (J-46535) Drive belt tension releaser

WBIA0536E

Revision: December 2007

EM-7

2007 QX56


PREPARATION < SERVICE INFORMATION >

Commercial Service Tool

INFOID:0000000003531517

(Kent-Moore No.) Tool name

Description

Power tool

Loosening bolts and nuts

PBIC0190E

Spark plug wrench

Removing and installing spark plug

S-NT047

(J-24239-01) Cylinder head bolt wrench

Loosening and tightening cylinder head bolt, and use with angle wrench [SST: KV10112100 (BT-8653-A)] a: 13 (0.51) dia. b: 12 (0.47) c: 10 (0.39) Unit: mm (in) NT583

Valve seat cutter set

Finishing valve seat dimensions

S-NT048

Pulley puller

Removing crankshaft pulley

ZZA0010D

Piston ring expander

Removing and installing piston ring

S-NT030

Revision: December 2007

EM-8

2007 QX56


PREPARATION < SERVICE INFORMATION > (Kent-Moore No.) Tool name

Description

Valve guide drift

Removing and installing valve guide Intake & Exhaust: a: 9.5 mm (0.374 in) dia. b: 5.5 mm (0.217 in) dia.

A

EM

C S-NT015

Valve guide reamer

1: Reaming valve guide hole 2: Reaming hole for oversize valve guide Intake & Exhaust: d1: 6.0 mm (0.236 in) dia. d2: 10.175 - 10.196 mm (0.4006 - 0.4014 in) dia. S-NT016

Front oil seal drift

D

E

F

Installing front oil seal

G

H ZZA0012D

Rear oil seal drift

Installing rear oil seal

I

J ZZA0025D

(J-43897-18) (J-43897-12) Oxygen sensor thread cleaner

AEM488

Reconditioning the exhaust system threads before installing a new A/F sensor and heated oxygen sensor (Use with anti-seize lubricant shown below.) a: J-43897-18 (18 mm dia.) (0.71 in) for zirconia heated oxygen sensor b: J-43897-12 (12 mm dia.) (0.55 in) for titania heated oxygen sensor Lubricating A/F sensors and heated oxygen sensor thread cleaning tool when reconditioning exhaust system threads

Anti-seize lubricant (Permatex 133AR or equivalent meeting MIL specification MIL-A-907)

K

L

M

N

O AEM489

P

Revision: December 2007

EM-9

2007 QX56


NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING < SERVICE INFORMATION >

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING NVH Troubleshooting - Engine Noise

INFOID:0000000003586490

AWBIA0149ZZ

1.

Timing chain

2.

Intake valve

3.

Exhaust valve

4.

Drive belt

5.

Water pump

A.

VTC noise

Revision: December 2007

EM-10

2007 QX56


NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING < SERVICE INFORMATION > B.

Tappet noise

C.

Camshaft bearing noise

D.

Valve mechanism

E.

Rotation mechanism

F.

Piston pin noise

G.

Piston slap noise

H.

Main bearing noise

I.

Connecting rod bearing noise

J.

Drive belt noise (slipping)

K.

Drive belt noise (stick/slipping)

L.

Water pump noise

M.

Timing chain and chain tensioner noise

Use the Chart Below to Help You Find the Cause of the Symptom

A

INFOID:0000000003531519

1. Locate the area where noise occurs. 2. Confirm the type of noise. 3. Specify the operating condition of engine. 4. Check specified noise source. If necessary, repair or replace these parts.

C

D

E

Operating condition of engine Location of noise

Type of noise

Top of engine Rocker cover Cylinder head

Ticking or clicking

Before warmup

After warmup

When starting

When idling

When racing

While driving

Source of noise

C

A

A

B

Tappet noise

Valve clearance

Camshaft bearing noise

Camshaft journal clearance Camshaft runout

EM-46 EM-46

Piston pin noise

Piston and piston pin clearance Connecting rod bushing clearance

EM-93 EM-93

Piston slap noise

Piston-to-bore clearance Piston ring side clearance Piston ring end gap Connecting rod bend and torsion

EM-93 EM-93 EM-93 EM-93

Connecting rod bushing oil clearance (Small end) Connecting rod bearing clearance (Big end)

EM-93 EM-93

L

M

Rattle

Slap or knock

Crankshaft pulley Cylinder block (Side of engine) Oil pan

Front of engine Chain case cover Front cover

Slap or rap

Check item

Reference page

G C

A

A

A

A

B

B

B

B

B

C

A

H

A

B

C

B

B

B

Knock

A

B

A

B

C

Main bearing noise

Main bearing oil clearance Crankshaft runout

EM-93 EM-93

B

Timing chain and chain tensioner noise

Timing chain cracks and wear Timing chain tensioner operation

EM-38 EM-38

C

Drive belts (Sticking or slipping)

Drive belts deflection Idler pulley bearing operation

A

A

A

B

B

B

B

EM-13

Creaking

A

B

A

B

A

B

Squall Creaking

A

B

B

A

B

Water pump noise

Water pump operation

EM-38

Rattle

A

VTC

VTC lockpin clearance

EM-55

Revision: December 2007

C: Sometimes related

—: Not related

EM-11

J

N

O

Drive belts (Slipping)

A: Closely related B: Related

I

K

Knock

Tapping or ticking

F

EM-56

Connecting rod bearing noise

Squeaking or fizzing Front of engine

EM

2007 QX56

P


ENGINE ROOM COVER < SERVICE INFORMATION >

ENGINE ROOM COVER Removal and Installation

INFOID:0000000003531520

REMOVAL â&#x20AC;¢ Remove the engine cover bolts and cover. CAUTION: Do not damage or scratch cover when installing or removing.

WBIA0795E

INSTALLATION Installation is in the reverse order of removal.

Revision: December 2007

EM-12

2007 QX56


DRIVE BELTS < SERVICE INFORMATION >

DRIVE BELTS

A

Checking Drive Belts

INFOID:0000000003531521

EM

C

D

E

F

G LBIA0391E

1.

Drive belt

2.

Power steering pump pulley

3.

Generator pulley

4.

Crankshaft pulley

5.

A/C compressor

6.

Idler pulley

7.

Cooling fan pulley

8.

Water pump pulley

9.

Drive belt auto tensioner

A.

Allowable working range

H

WARNING: Be sure to perform when the engine is stopped. 1. Remove air duct and resonator assembly when inspecting drive belt. 2. Make sure that indicator (single line notch) of each auto tensioner is within the allowable working range (between three line notches) as shown. NOTE: • Check the drive belt auto tensioner indication when the engine is cold. • The indicator notch is located on the moving side of the drive belt auto tensioner. 3. Visually check entire belt for wear, damage or cracks. 4. If the indicator is out of allowable working range or belt is damaged, replace the belt.

I

J

K

L

DRIVE BELT TENSION There is no manual drive belt tension adjustment. The drive belt tension is automatically adjusted by the drive belt auto tensioner.

Removal and Installation

M

INFOID:0000000003531522

N

REMOVAL 1. 2.

Remove the air duct and resonator assembly. Refer to EM-15, "Removal and Installation". Install Tool on drive belt auto tensioner pulley bolt, move in the direction of arrow (loosening direction of tensioner) as shown. Tool number

3.

:

O

P

(J-46535)

CAUTION: Avoid placing hand in a location where pinching may occur if the holding tool accidentally comes off. Remove the drive belt. WBIA0537E

Revision: December 2007

EM-13

2007 QX56


DRIVE BELTS < SERVICE INFORMATION > INSTALLATION Installation is in the reverse order of removal. CAUTION: Make sure belt is securely installed around all pulleys. â&#x20AC;˘ Rotate the crankshaft pulley several turns clockwise to equalize belt tension between pulleys. â&#x20AC;˘ Make sure belt tension is within the allowable working range, using the indicator notch on the drive belt auto tensioner. Refer to EM-13, "Checking Drive Belts".

Drive Belt Auto Tensioner and Idler Pulley

INFOID:0000000003531523

WBIA0607E

1.

Drive belt auto tensioner

2.

Idler pulley

REMOVAL 1. 2. 3.

Remove the air duct and resonator assembly. Refer to EM-15, "Removal and Installation". Remove the drive belt. Refer to EM-13, "Removal and Installation". Remove the drive belt auto tensioner and idler pulley using power tool.

INSTALLATION Installation is in the reverse order of removal.

Revision: December 2007

EM-14

2007 QX56


AIR CLEANER AND AIR DUCT < SERVICE INFORMATION >

AIR CLEANER AND AIR DUCT

A

Removal and Installation

INFOID:0000000003531524

EM

C

D

E

F

G WBIA0465E

1.

Air cleaner case (upper)

4.

Air duct and resonator assembly

2.

Air cleaner filter

3.

Air cleaner case (lower)

H

REMOVAL 1. Remove the engine room cover using power tool. Refer to EM-12, "Removal and Installation". 2. Disconnect the harness connector from air cleaner case (upper). 3. Remove the air duct and resonator assembly and air cleaner case. 4. Remove air cleaner filter and air cleaner case (lower) â&#x20AC;¢ Add marks as necessary for easier installation.

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INSTALLATION

K

Installation is in the reverse order of removal.

Removal and Installation (Viscous paper type)

INFOID:0000000003531525

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REMOVAL M

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WBIA0465E

Revision: December 2007

EM-15

2007 QX56


AIR CLEANER AND AIR DUCT < SERVICE INFORMATION > 1.

Air cleaner case (upper)

4.

Air duct and resonator assembly

2.

Air cleaner filter

3.

Air cleaner case (lower)

NOTE: â&#x20AC;˘ The viscous paper type filter does not need cleaning between replacement intervals. â&#x20AC;˘ Replace the air filter as necessary for periodic maintenance. Refer to MA-6. 1. Remove the air duct and resonator assembly. 2. Remove the air cleaner case (upper). 3. Remove the air cleaner filter from the air cleaner case (lower).

INSTALLATION 1. 2. 3.

Install the new air cleaner filter in the air cleaner case (lower). Install the air cleaner case (upper). Install the air duct and resonator assembly (inlet).

Revision: December 2007

EM-16

2007 QX56


INTAKE MANIFOLD < SERVICE INFORMATION >

INTAKE MANIFOLD

A

Removal and Installation

INFOID:0000000003531526

EM

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D

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1.

Intake manifold

2.

PCV hose

3.

Gasket

4.

Electric throttle control actuator

5.

Water hose

6.

Water hose

7.

PCV hose

8.

EVAP hose

9.

EVAP canister purge control solenoid valve

10.

Bracket

11.

Gasket

J

REMOVAL 1.

2. 3. 4. 5.

Partially drain the engine coolant. Refer to CO-9, "Changing Engine Coolant". WARNING: To avoid the danger of being scalded, never drain the engine coolant when the engine is hot. Remove the engine room cover using power tool. Refer to EM-12, "Removal and Installation". Release the fuel pressure. Refer to EC-80, "Fuel Pressure Check". Remove the air duct and resonator assembly. Refer to EM-15, "Removal and Installation". Disconnect the fuel tube quick connector on the engine side.

K

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M

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LBIA0395E

Revision: December 2007

EM-17

2007 QX56


INTAKE MANIFOLD < SERVICE INFORMATION > • Perform the following steps to disconnect the quick connector using Tool. Tool number a.

: 16441 6N210 (J-45488)

Remove quick connector cap (engine side only).

SBIA0354E

b.

With the sleeve side of Tool facing quick connector, install Tool onto fuel tube. c. Insert Tool into quick connector until sleeve contacts and goes no further. Hold the Tool in that position. CAUTION: Inserting the Tool hard will not disconnect quick connector. Hold Tool where it contacts and goes no further. d. Draw and pull out quick connector straight from fuel tube. CAUTION: • Pull quick connector holding "A" position in illustration. WBIA0604E • Do not pull with lateral force applied. O-ring inside quick connector may be damaged. • Prepare container and cloth beforehand as fuel will leak out. • Avoid fire and sparks. • Be sure to cover openings of disconnected pipes with plug or plastic bag to avoid fuel leakage and entry of foreign materials. 6. Remove or disconnect harnesses, brackets, vacuum hose, vacuum gallery and PCV hose and tube from intake manifold. 7. Remove electric throttle control actuator by loosening bolts diagonally. CAUTION: • Handle carefully to avoid any damage to the electric throttle control actuator. • Do not disassemble. 8. Remove the fuel injectors and fuel tube assembly. Refer to EM-31, "Removal and Installation". 9. Loosen the bolts in reverse order shown using power tool. 10. Remove the intake manifold. CAUTION: Cover engine openings to avoid entry of foreign materials. • Clean all gasket mating surfaces, do not reuse gaskets.

KBIA2462E

INSTALLATION Installation is in the reverse order of removal.

Revision: December 2007

EM-18

2007 QX56


INTAKE MANIFOLD < SERVICE INFORMATION > • Tighten the intake manifold bolts in numerical order as shown. A

EM

C KBIA2462E

D

• Install the EVAP canister purge control solenoid valve connector with it facing front of engine. • Tighten the electronic throttle control actuator bolts of the electric throttle control actuator equally and diagonally in several steps. • After installation perform inspection after installation. • Install the water hose so that its overlap width for connection is between 27 mm (1.06 in) and 32 mm (1.26 in) (target: 27 mm 1.06 in). Connecting Quick Connector of Fuel Tube Install quick connector as follows (the steps are the same for quick connectors on both engine side and vehicle side except for the quick connector cap). 1. Make sure no foreign substances are deposited in and around tube and quick connector, and they are not damaged. 2. Thinly apply new engine oil around the fuel tube from tip end to the spool end. 3. Align center to insert quick connector straight into fuel tube. • Insert until the paint mark for engagement identification (white) goes completely inside quick connector so that you cannot see it from the straight side of the connected part. Use a mirror to check this where it is not possible to view directly from the straight side, such as quick connector on vehicle side.

E

F

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K PBIC0017E

4.

• Insert fuel tube into quick connector until top spool is completely inside quick connector, and 2nd level spool exposes right below quick connector on engine side. CAUTION: • Hold "A" position in illustration when inserting fuel tube into quick connector. • Carefully align center to avoid inclined insertion to prevent damage to O-ring inside quick connector. • Insert until you hear a "click" sound and actually feel the engagement. • To avoid misidentification of engagement with a similar KBIA0272E sound, be sure to perform the next step. Pull quick connector by hand holding "A" position. Make sure it is completely engaged (connected) so that it does not come out from fuel tube. NOTE: Recommended pulling force is 50 N (5.1 kg, 11.2 lb).

Revision: December 2007

EM-19

2007 QX56

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INTAKE MANIFOLD < SERVICE INFORMATION > 5. Install the quick connector cap on the quick connector joint (on engine side only). 6. Install the fuel hose and tube to hose clamps. 7. Refill the engine coolant. Refer to CO-9, "Changing Engine Coolant".

SBIA0354E

INSPECTION AFTER INSTALLATION • After installing fuel tubes, make sure there is no fuel leakage at connections in the following steps. - Apply fuel pressure to fuel lines by turning ignition switch ON (with engine stopped). Then check for fuel leaks at connections. - Start the engine and rev it up and check for fuel leaks at the connections. • Perform procedures for throttle valve closed position learning after finishing repairs. Refer to EC-77, "Throttle Valve Closed Position Learning". • If electric throttle control actuator is replaced, perform procedures for idle air volume learning” after finishing repairs. Refer to EC-78, "Idle Air Volume Learning".

Revision: December 2007

EM-20

2007 QX56


EXHAUST MANIFOLD AND THREE WAY CATALYST

< ON-VEHICLE REPAIR >

EXHAUST MANIFOLD AND THREE WAY CATALYST

A

Exploded View

INFOID:0000000004918768

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1. Air fuel ratio A/F sensor 1 (bank 2)

2. Exhaust manifold cover (bank 2)

3.

Exhaust manifold (bank 2)

4. Gaskets

5. Exhaust manifold (bank 1)

6.

Exhaust manifold cover (bank 1)

7. Air fuel ratio A/F sensor 1 (bank 1)

A. Up

B. Coated face

C. Manifold side

D. Up mark

Front

Removal and Installation

K INFOID:0000000005190289

L

REMOVAL WARNING: Perform the work when the exhaust and cooling system have cooled sufficiently. 1. Remove the engine undercover (rear) using power tool (4WD models). 2. Remove front final drive assembly (4WD models). Refer to FFD-12, "Removal and Installation". 3. Remove the main muffler assembly and center exhaust tube. Refer to EX-3, "Removal and Installation". 4. Remove the front exhaust tubes. Refer to EX-3, "Removal and Installation". 5. Remove front tires. Refer to WT-7, "Rotation". 6. Remove fender protectors. Refer to EI-22, "Removal and Installation". 7. Remove the LH and RH air fuel ratio A/F sensors. â&#x20AC;˘ Follow steps below to remove each air fuel ratio A/F sensor. a. Remove the harness connector of each air fuel ratio A/F sensor, and harness from bracket and middle clamp.

Revision: December 2007

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2007 QX56

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EXHAUST MANIFOLD AND THREE WAY CATALYST

< ON-VEHICLE REPAIR > b. Remove the air fuel ratio A/F sensors from both LH and RH exhaust manifolds using Tool. Tool number

8. 9.

a. b. c. d. e.

:

(J-44626)

CAUTION: • Do not damage the air fuel ratio A/F sensors • Discard any air fuel ratio A/F sensor which has been dropped from a height of more than 0.5m (19.7 in) onto a hard surface such as a concrete floor. Replace it with a new one. Support the engine using a suitable tool. Remove the exhaust manifold (LH) (A) following the steps below. • : Front • B: Exhaust manifold (RH) Remove the engine mounting insulator. Refer to EM-74. Remove the exhaust manifold cover. Remove the engine mounting bracket. Refer to EM-74. Loosen the nuts in reverse order as shown using power tool. Remove the exhaust manifold (LH) (A).

WBIA0630E

AWBIA0814ZZ

10. Remove the exhaust manifold (RH) (B) following the steps below. • : Front • A: Exhaust manifold (LH) a. Remove the engine mounting insulator. Refer to EM-74. b. Remove the exhaust manifold cover. c. Remove the engine mounting bracket. Refer to EM-74. d. Remove the oil level gauge guide. Refer to EM-24. e. Loosen the nuts in reverse order as shown using power tool. f. Remove the exhaust manifold (RH) (B).

AWBIA0814ZZ

INSPECTION AFTER REMOVAL Surface Distortion • Check the flatness of each exhaust manifold flange surface using suitable tools.

Flatness limit

: 0.3 mm (0.012 in)

• If measurement exceeds the limit, replace the exhaust manifold.

KBIA2504E

INSTALLATION

Installation is in the reverse order of removal.

Revision: December 2007

EM-22

2007 QX56


EXHAUST MANIFOLD AND THREE WAY CATALYST < ON-VEHICLE REPAIR > • Install new exhaust manifold gasket with the top of the triangular up mark on it facing up and its coated face (gray side) toward the exhaust manifold side.

A

EM

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D

• Tighten the exhaust manifold nuts LH and RH in the numerical order shown. Then recheck the torque of the nuts. - A: Exhaust manifold (LH) - B: Exhaust manifold (RH) : Front

E

F

G AWBIA0814ZZ

• Before installing new air fuel ratio A/F sensors, clean the exhaust system threads using suitable tool and apply anti-seize lubricant. Oxygen sensor thread cleaner Oxygen sensor thread cleaner

H

I

: (J-43879-12) : (J-43897-18)

CAUTION: • Do not over tighten the air fuel ratio A/F sensors. Doing so may cause damage to the sensor, resulting in the MIL coming on.

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Revision: December 2007

EM-23

2007 QX56


OIL PAN AND OIL STRAINER < SERVICE INFORMATION >

OIL PAN AND OIL STRAINER Removal and Installation

INFOID:0000000003531528

KBIA2465E

1.

Oil pan (upper)

2.

O-ring

3.

O-ring

4.

O-ring

5.

O-ring (with collar)

6.

Oil level gauge guide

7.

Oil level gauge

8.

O-ring

9.

Connector bolt

10.

Oil filter

11. Oil cooler

12. Relief valve

13.

Oil pressure switch

14. Gasket

15. Drain plug

16.

Oil pan (lower)

17. Oil strainer

REMOVAL WARNING: To avoid the danger of being scalded, never drain the engine oil when the engine is hot. 1. Remove the engine. Refer to EM-74, "Removal and Installation". 2. Remove the oil pan (lower) using the following steps. a. Remove the oil pan (lower) bolts using power tool.

KBIA2466E

Revision: December 2007

EM-24

2007 QX56


OIL PAN AND OIL STRAINER < SERVICE INFORMATION > b.

Insert Tool between the lower oil pan and the upper oil pan. Tool number

c.

A

: KV10111100 (J-37228)

CAUTION: • Be careful not to damage the mating surface. • Do not insert a screwdriver, this will damage the mating surfaces. Slide (1) the Tool by tapping (2) its side with a hammer to remove the lower oil pan from the upper oil pan.

EM

C WBIA0566E

3. 4. a.

Remove the oil strainer from the oil pan (upper). Remove the oil pan (upper) using the following steps. Remove the oil pan (upper) bolts a shown.

D

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H KBIA2467E

b.

Remove the oil pan (upper) from the cylinder block by prying it at the points shown, using suitable tool. CAUTION: Do not damage mating surface.

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KBIA2468E

5.

Remove the O-rings from the oil pump and front cover. NOTE: Do not reuse O-rings.

L

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INSPECTION AFTER REMOVAL

P

Clean the oil strainer.

INSTALLATION

Revision: December 2007

EM-25

2007 QX56


OIL PAN AND OIL STRAINER < SERVICE INFORMATION > 1. Install the oil pan (upper) using the following steps. a. Apply liquid gasket thoroughly as shown. Use Genuine RTV Silicone Sealant or equivalent. Refer to GI45, "Recommended Chemical Product and Sealant". CAUTION: Apply liquid gasket to outside of bolt hole for the hole shown by .

KBIA2470E

b.

Install new O-rings to the oil pump and front cover side.

KBIA2469E

c.

Tighten the bolts in numerical order as shown. M6 × 30 mm (1.18 in) M8 × 25 mm (0.98in) M8 × 45 mm (1.77 in) M8 × 123 mm (4.84in)

2.

: No. 15, 16 : No. 1, 3, 5, 7, 11, 13 : No. 2, 4, 6, 8, 10, 14 : No. 9, 12

Install the oil strainer to the oil pan (upper). PBIC2553E

3. a.

Install the oil pan (lower). Apply liquid gasket thoroughly as shown. Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-45, "Recommended Chemical Product and Sealant"

KBIA2471E

b.

Tighten the oil pan (lower) bolts in numerical order as shown.

PBIC2595E

Revision: December 2007

EM-26

2007 QX56


OIL PAN AND OIL STRAINER < SERVICE INFORMATION > 4. 5.

Install the oil pan drain plug. Install engine assembly. Refer to EM-74, "Removal and Installation". â&#x20AC;¢ Do not fill the engine oil for at least 30 minutes after oil pan is installed.

A

INSPECTION AFTER INSTALLATION 1. 2. 3. 4.

EM

Check engine oil level and add engine oil if necessary. Refer to LU-8, "Inspection". Start the engine, and check for leaks of engine oil. Stop engine and wait for 10 minutes. Check engine oil level again.

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Revision: December 2007

EM-27

2007 QX56


IGNITION COIL < SERVICE INFORMATION >

IGNITION COIL Removal and Installation

INFOID:0000000003531529

WBIA0796E

1.

Ignition coil

2.

Spark plug

REMOVAL 1. 2. 3.

Remove the engine room cover using power tool. Refer to EM-12, "Removal and Installation". Disconnect the harness connector from the ignition coil. Remove the ignition coil. CAUTION: Do not shock ignition coil.

INSTALLATION Installation is in the reverse order of removal.

Revision: December 2007

EM-28

2007 QX56


SPARK PLUG < SERVICE INFORMATION >

SPARK PLUG

A

Removal and Installation

INFOID:0000000003531530

EM

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1.

Ignition coil

2.

Spark plug

H

REMOVAL 1. 2.

Remove the ignition coil. Refer to EM-28, "Removal and Installation". Remove the spark plug using suitable tool.

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SEM294A

L

INSPECTION AFTER REMOVAL • Do not use a wire brush for cleaning.

M

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SMA773C

• If the spark plug tip is covered with carbon, a spark plug cleaner may be used. Cleaner air pressure Cleaning time

Revision: December 2007

: Less than 588 kPa (5.9 bar, 6 kg/cm2, 85 psi) : Less than 20 seconds

EM-29

2007 QX56

P


SPARK PLUG < SERVICE INFORMATION > â&#x20AC;¢ Checking and adjusting plug gap is not required between change intervals.

SMA806CA

INSTALLATION Installation is in the reverse order of removal. Make

NGK

Standard type

Gap (Nominal)

DIFR5A-11

: 1.1 mm (0.043 in)

CAUTION: Do not drop or shock spark plug.

Revision: December 2007

EM-30

2007 QX56


FUEL INJECTOR AND FUEL TUBE < SERVICE INFORMATION >

FUEL INJECTOR AND FUEL TUBE

A

Removal and Installation

INFOID:0000000003531531

EM

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1.

Fuel tube (RH)

2.

Cap

3.

Fuel damper

4.

O-ring

5.

O-ring (blue)

6.

Fuel injector

7.

Clip

8.

O-ring (brown)

9.

O-ring

10. Fuel hose assembly

K

L

11. Fuel tube (LH)

CAUTION: Do not remove or disassemble parts unless instructed as shown.

M

REMOVAL 1. 2. 3. 4. 5.

6.

Remove the engine room cover using power tool. Refer to EM-12, "Removal and Installation". Release the fuel pressure. Refer to EC-80, "Fuel Pressure Check". Disconnect the negative battery terminal. Disconnect the fuel injector harness connectors. Disconnect the fuel hose assembly from the fuel tubes (RH and LH). CAUTION: • While hoses are disconnected, plug them to prevent fuel from draining. • Do not separate the fuel connector and fuel hose. Remove the fuel injectors with the fuel tube assembly.

Revision: December 2007

EM-31

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2007 QX56


FUEL INJECTOR AND FUEL TUBE < SERVICE INFORMATION > 7. Remove the fuel injector from the fuel tube using the following steps. a. Spread open and remove the clip. b. Remove the fuel injector from the fuel tube by pulling straight out. CAUTION: • Be careful with remaining fuel that may leak out from fuel tube. • Do not damage injector nozzles during removal. • Do not bump or drop fuel injectors. • Do not disassemble fuel injectors.

KBIA2506E

8.

Remove the fuel damper from each fuel tube.

INSTALLATION 1. a.

b. c.

Install the fuel damper to each fuel tube using the following steps. Apply engine oil to the new O-ring and set it into the cup of the fuel tube. CAUTION: • Handle O-ring with bare hands. Never wear gloves. • Lubricate new O-ring with new engine oil. • Do not clean O-ring with solvent. • Make sure that O-ring and its mating part are free of foreign material. • When installing O-ring, do not scratch it with tool or fingernails. • Do not twist or stretch the O-ring. Make sure that the backup spacer is in the O-ring connecting surface of the fuel damper. NOTE: The backup spacer is part of the fuel damper assembly. Insert the fuel damper until it seats on the fuel tube. CAUTION: • Insert straight, making sure that the axis is lined up. • Do not pressure-fit with excessive force. Reference value

d. 2.

KBIA2473E

:130 N (13.3 kg, 29.2 lb)

Install the cap, and then tighten the bolts evenly. • After tightening the bolts, make sure that there is no gap between the cap and fuel tube. Install new O-rings to the fuel injector paying attention to the items below. CAUTION: • Upper and lower O-rings are different colors. Fuel tube side Nozzle side

: Blue : Brown

• Handle O-ring with bare hands. Never wear gloves. Revision: December 2007

EM-32

2007 QX56


FUEL INJECTOR AND FUEL TUBE < SERVICE INFORMATION > • Lubricate new O-ring with new engine oil. • Do not clean O-ring with solvent. A • Make sure that O-ring and its mating part are free of foreign material. • When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. EM • If O-ring was stretched while it was being attached, do not insert it quickly into fuel tube. • Insert O-ring straight into fuel tube. Do not angle or twist it. 3. Install the fuel injector to the fuel tube using the following steps. C a. Insert new clip into clip mounting groove on the fuel injector. • Insert clip so that lug ″A″ of fuel injector matches notch ″A″ of the clip. D CAUTION: • Do not reuse clip. Replace it with a new one. • Do not allow the clip to interfere with the O-ring. If interference occurs, replace the O-ring. E b. Insert the fuel injector into the fuel tube with the clip attached. • Insert it while matching it to the axial center. • Insert fuel injector so that lug ″B″ of fuel tube matches notch F ″B″ of the clip. • Make sure that the fuel tube flange is securely seated in the flange fixing groove on the clip. G c. Make sure that installation is complete by checking that the fuel injector does not rotate or come off. • Make sure that the protrusions of the fuel injectors are aligned with the cutouts of the clips after installation. H

I KBIA2507E

4.

Install the fuel tube and fuel injector assembly to the intake manifold. CAUTION: Do not let the tip of the injector nozzle come in contact with other parts. • Tighten fuel tube assembly bolts ″a″ to ″b″ in illustration in two steps. 1st step 2nd step

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: 12.8 N·m (1.3 kg-m, 9 ft-lb) : 24.5 N·m (2.5 kg-m, 18 ft-lb)

L

M KBIA2474E

5.

Install the fuel hose assembly. • Insert connectors straight, making sure that the axis is lined up with fuel tube side to prevent O-ring from being damaged. • Tighten bolts evenly in several steps. • Make sure that there is no gap between the flange and fuel tube after tightening the bolts. CAUTION: • Handle O-ring with bare hands. Do not wear gloves. • Lubricate O-ring with new engine oil. • Do not clean O-ring with solvent. • Make sure that O-ring and its mating part are free of foreign material. • When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to twist or stretch O-ring. • If O-ring was stretched while it was being attached, do not insert it quickly into fuel tube. • Insert new O-ring straight into fuel tube. Do not twist it.

Revision: December 2007

EM-33

2007 QX56

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2007 INFINITI QX56 Service Repair Manual  
2007 INFINITI QX56 Service Repair Manual  
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