Page 1

QUICK REFERENCE INDEX Edition: September 2006 Revision: December 2006 Publication No. SM7E-1B16U1

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

C

TRANSMISSION/ TRANSAXLE

D DRIVELINE/AXLE E SUSPENSION

F BRAKES

G STEERING H RESTRAINTS I

BODY

J AIR CONDITIONER K ELECTRICAL

Accelerator Control System

CL

Clutch

MT

Manual Transaxle

CVT

CVT

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

PS

Power Steering System

STC

Steering Control System

SB

Seat Belts

SRS

Supplemental Restraint System (SRS)

BL

Body, Lock & Security System

GW

Glasses, Window System & Mirrors

RF

Roof

EI

Exterior & Interior

IP

Instrument Panel

SE

Seat

MTC

Manual 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

Audio Visual, Navigation & Telephone System

ACS

Auto Cruise Control System

PG

Power Supply, Ground & Circuit Elements

L MAINTENANCE

MA

Maintenance

M INDEX

IDX

Alphabetical Index

© 2006 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 NISSAN SENTRA. 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: SENTRA

2007

QUICK REFERENCE CHART: SENTRA Engine Tune-Up Data - MR20DE

PFP:00000 ELS002B5

General Specifications Engine type

MR20DE

Cylinder arrangement

In-line 4

Displacement

1,997 (121.86)

cm3 (in3 ) Bore and stroke mm (in)

84.0 x 90.1 (3.307 x 3.547)

Valve arrangement

DOHC

Firing order

1-3-4-2

Number of piston rings

Compression

2

Oil

1

Compression ratio

10.2

Compression pressure kPa (bar, kg/cm2 , psi) / 250 rpm

Standard

1,390 (13.9, 14.2, 202)

Minimum

1,140 (11.4. 11.6, 165)

Differential limit between cylinders

100 (1.0, 1.0, 15)

Valve Timing Unit: degree

Valve timing

PBIC4542E

(

): Valve timing control “ON”

a

b

c

d

e

f

220

232

-13 (27)

65 (25)

7

33


QUICK REFERENCE CHART: SENTRA 2007 Drive Belt Deflection and Tension Tension of drive belt

Auto adjustment by auto-tensioner

Spark Plug Plug type

Platinum-tipped

Make

NGK

Standard type

PLZKAR6A-11

Spark plug gap

Nominal: 1.1 mm (0.043 in)

Engine Tune-Up Data - QR25DE

ELS002DJ

General Specifications Cylinder arrangement Displacement Bore and stroke

In-line 4

cm3 (in3 )

2,488 (151.82)

mm (in)

89.0 x 100 (3.50 x 3.94)

Valve arrangement

DOHC

Firing order

1-3-4-2

Number of piston rings

Compression

2

Oil

1

Compression ratio

9.5:1

Compression pressure kPa (kg/cm2 , psi) / 250 rpm

Standard

1,250 (12.8, 181.3)

Minimum

1,060 (10.8, 153.7)

Differential limit between cylinders

100 (1.0, 14)

Valve timing

PBIC0187E

Unit: degree a

b

c

d

e

f

224°

244°

64°

41°

Drive Belt Deflection and Tension Tension of drive belts

Auto adjustment by auto tensioner

Spark Plug Unit: mm (in) Make Type Gap (nominal)

NGK Standard

DILKAR6A-11 1.1 (0.043)


QUICK REFERENCE CHART: SENTRA 2007

Front Wheel Alignment (Unladen*)

ELS002B6

Engine

MR20DE

Model

QR25DE

2.0, 2.0 S, 2.0 SL

SE-R

SE-R SPEC-V

Minimum

-0° 55′ (-0.92°)

-0° 55′ (-0.92°)

-1° 00′ (-1.00°)

Nominal

-0° 10′ (-0.17°)

-0° 10′ (-0.17°)

-0° 15′ (-0.25°)

Maximum

0° 35′ (0.58°)

0° 35′ (0.58°)

0° 30′ (0.50°)

Left and right difference (RH - LH)

0° 45′ (0.75°) or less

0° 45′ (0.75°) or less

0° 45′ (0.75°) or less

Minimum

4° 10′ (4.17°)

4° 15′ (4.25°)

4° 25′ (4.42°)

Nominal

4° 55′ (4.92°)

5° 00′ (5.00°)

5° 10′ (4.17°)

Maximum

5° 40′ (5.67°)

5° 45′ (5.75°)

5° 55′ (5.92°)

Left and right difference (RH - LH)

0° 45′ (0.75°) or less

0° 45′ (0.75°) or less

0° 45′ (0.75°) or less

11° 05′ (11.08°)

11° 05′ (11.08°)

11° 20′ (11.33°)

Camber Degree minute (Decimal degree)

Caster Degree minute (Decimal degree)

Kingpin inclination Degree minute (Decimal degree)

SFA234AC

Distance (A - B) Total toe-in

Angle (left or right, each side) Degree minute (Degree)

Minimum

-1 mm (-0.04 in)

-1 mm (-0.04 in)

-1 mm (-0.04 in)

Nominal

0 mm (0.00 in)

0 mm (0.00 in)

0 mm (0.00 in)

Maximum

1 mm (0.04 in)

1 mm (0.04 in)

1 mm (0.04 in)

Minimum

-0° 02′ (-0.03°)

-0° 02′ (-0.03°)

-0° 02′ (-0.03°)

Nominal

0° 00′ (0.00°)

0° 00′ (0.00°)

0° 00′ (0.00°)

Maximum

0° 02′ (0.03°)

0° 02′ (0.03°)

0° 02′ (0.03°)

*: Fuel, engine coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.

Rear Wheel Alignment (Unladen*) Model

2.0, 2.0 S, 2.0 SL

Camber Degree minute (Decimal degree)

Total toe-in

Distance (A - B)

ELS002B7

SE-R

SPEC-V

Minimum

– 2° 00′ (– 2.00°)

– 2° 00′ (– 2.00°)

– 2° 00′ (– 2.00°)

Nominal

– 1° 30′ (– 1.50°)

– 1° 30′ (– 1.50°)

– 1° 30′ (– 1.50°)

Maximum

– 1° 00′ (– 1.00°)

– 1° 00′ (– 1.00°)

– 1° 00′ (– 1.00°)

Minimum

– 3.0 mm ( – 0.118 in)

– 2.0 mm ( – 0.079 in)

– 1.0 mm (– 0.039 in)

Nominal

1.0 mm (0.039 in)

2.0 mm (0.079 in)

3.0 mm (0.118 in)

Maximum

5.0 mm (0.197 in)

4.0 mm (0.157 in)

7.0 mm (0.276 in)

*: Fuel, engine coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.


QUICK REFERENCE CHART: SENTRA 2007

Wheelarch Height (Unladen*)

ELS002B8

LEIA0085E

Engine

MR20DE

Model

QR25DE

2.0

2.0 S, 2.0 SL

SE-R

SPEC-V

P205/60HR15

P205/55HR16

P225/45VR17

P225/45WR17

Front (Hf) mm (in)

691 (27.20)

694 (27.32)

690 (27.17)

679 (26.73)

Rear (Hr) mm (in)

693 (27.28)

696 (27.40)

690 (27.17)

677 (26.65)

Tire Size

*: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.

Brake - General Specifications

ELS002B9

MR20DE

Applied model

Base Front disc brake

Brake model

Rear drum brake

SE-R Spec-V

CLZ25VF

CLZ25VJ

AD25V

57.2 mm (2.252 in)

57.15 mm (2.250 in)

11 mm (0.433 in)

11 mm (0.433 in)

11 mm (0.433 in)

280 mm × 24.0 mm (11.02 in × 0.945 in)

296 mm × 26.0 mm (11.65 in × 1.024 in)

320 mm × 28.0 mm (12.60 in × 1.102 in)

Pad thickness

Rear disc brake

SE-R

57.2 mm (2.252 in)

Cylinder bore diameter Rotor outer diameter × thickness

QR25DE

Cylinder bore diameter

34.93 mm (1.375 in)

Pad thickness

8.5 mm (0.335 in)

Rotor outer diameter × thickness

292 mm × 9.0 mm (11.50 in × 0.354 in)

Brake model Cylinder bore diameter Lining Length × width × thickness Drum inner diameter

Master cylinder

Cylinder bore diameter

Control valve

Valve model

Brake booster

Booster model

LT20D

15.87 mm (0.625 in)

194.1 mm × 30.0 mm × 4.0 mm (7.642 in × 1.181 in × 0.157 in)

228.6 mm (9.000 in)

Diaphragm diameter Recommended brake fluid

22.22 mm (0.875 in) Electric brake force distribution C255 255 mm (10.04 in) Refer to ! Hyper-link Error ! .

Front Disc Brake - Repair Limits

ELS002DK

CLZ25VF Unit: mm (in) Brake pad

Standard thickness (new)

11 (0.433)

Repair limit thickness

2.0 (0.079)


QUICK REFERENCE CHART: SENTRA 2007

Disc rotor

Standard thickness (new)

24.0 (0.945)

Repair limit thickness

22.0 (0.866)

Runout limit Maximum uneven wear (measured at 8 positions)

0.035 (0.0014) 0.02 mm (0.0008 in) or less

CLZ25VJ Unit: mm (in) Brake pad

Disc rotor

Standard thickness (new)

11 (0.433)

Repair limit thickness

2.0 (0.079)

Standard thickness (new)

26.0 (1.024)

Repair limit thickness

24.0 (0.945)

Runout limit Maximum uneven wear (measured at 8 positions)

0.035 (0.0014) 0.02 mm (0.0008 in) or less

AD25V Unit: mm (in) Brake pad

Disc rotor

Standard thickness (new)

11 (0.433)

Repair limit thickness

2.0 (0.079)

Standard thickness (new)

28.0 (1.102)

Repair limit thickness

26.0 (1.024)

Runout limit Maximum uneven wear (measured at 8 positions)

0.035 (0.0014) 0.02 mm (0.0008 in) or less

Rear Disc Brake - Repair Limits

ELS002DL

Unit: mm (in) Brake pad

Disc rotor

Standard thickness (new)

8.5 (0.335)

Repair limit thickness

2.0 (0.079)

Standard thickness (new)

9.0 (0.354)

Repair limit thickness

8.0 (0.315)

Runout limit Maximum uneven wear (measured at 8 positions)

0.07 (0.0028) 0.015 mm (0.0006 in) or less

Rear Drum Brake - Repair Limits

ELS002DM

Unit: mm (in) Brake model Brake lining

Drum

LT20D Standard thickness (new)

4.0 (0.157)

Repair limit thickness

1.5 (0.059)

Standard inner diameter (new)

228.6 (9.000)

Repair limit inner diameter

230.0 (9.055)


QUICK REFERENCE CHART: SENTRA 2007

Brake Pedal

ELS002DN

Unit: mm (in)

WFIA0511E

H1

Brake pedal initial height (from dash panel top surface)

164.0 - 174.0 mm (6.45 - 6.85 in)

H2

Brake pedal depressed height (under a force of 490 N (50 kg-f, 110 lbf) with the engine running)

C

Clearance between the threaded end of stop lamp switch or ASCD switch, if equipped (2) and brake pedal lever (3).

A

Pedal play

— 0.74 - 1.96 mm (0.0291 - 0.0772 in) 3 - 11 mm (0.12 - 0.43 in)

Refill Capacities

ELS002BA

Capacity (Approximate) Description

Liter

US measure

Imp measure

55.0

14 1/2 gal

12 1/8 gal

With oil filter change

3.8

4 qt

3 3/8 qt

Without oil filter change

Fuel Engine oil Drain and refill

3.6

3 7/8 qt

3 1/8 qt

Dry engine (engine overhaul)

4.4

4 5/8 qt

3 7/8 qt

Cooling system

7.0

1 7/8 gal

1 1/2 gal

Manual transaxle fluid (MTF)

2.0

4 1/4 pt

3 1/2 pt

CVT fluid

8.3

8 3/4 qt

7 1/4 qt

Windshield washer fluid

3.5

3 3/4 qt

3 1/8 qt

0.50 ± 0.05 kg

1.10 ± 0.11 lb

1.10 ± 0.11 lb

5.03 fl oz

5.3 fl oz

(with reservoir at MAX level)

Air conditioning system refrigerant Air conditioning system oil

120 m


QUICK REFERENCE CHART: SENTRA 2007

Refill Capacities

ELS002DO

MR20DE Capacity (Approximate) Description Fuel

Liter

US measure

Imp measure

55.0

14 1/2 gal

12 1/8 gal

With oil filter change

3.8

4 qt

3 3/8 qt

Without oil filter change

3.6

3 7/8 qt

3 1/8 qt

Dry engine (engine overhaul)

4.4

4 5/8 qt

3 7/8 qt

Cooling system (with reservoir at max level)

7.0

1 7/8 gal

1 1/2 gal

Manual transaxle fluid (MTF)

2.0

4 1/4 pt

3 1/2 pt

CVT fluid

8.3

8 3/4 qt

7 1/4 qt

Brake and clutch fluid

Multi-purpose grease

Windshield washer fluid

3.5

3 3/4 qt

3 1/8 qt

0.50 ± 0.05 kg

1.10 ± 0.11 lb

1.10 ± 0.11 lb

5.03 fl oz

5.3 fl oz

Engine oil Drain and refill

Air conditioning system refrigerant Air conditioning system oil

120 m

QR25DE Capacity (Approximate)

Description Liter

US measure

Imp measure

55.0

14 1/2 gal

12 1/8 gal

With oil filter change

4.9

5 1/8 qt

4 3/8 qt

Without oil filter change

4.6

4 7/8 qt

4 qt

Dry engine (engine overhaul)

5.0

5 1/4 qt

4 3/8 qt

Cooling system (with reservoir at max level)

7.6

2 gal

1 5/8 gal

Manual transaxle fluid (MTF)

2.0

4 1/4 pt

3 1/2 pt

CVT fluid

8.3

8 3/4 qt

7 1/4 qt

Brake and clutch fluids

Multi-purpose grease

Windshield washer fluid

3.5

3 3/4 qt

3 1/8 qt

0.50 ± 0.05 kg

1.10 ± 0.11 lb

1.10 ± 0.11 lb

5.03 fl oz

5.3 fl oz

Fuel Engine oil Drain and refill

Air conditioning system refrigerant Air conditioning system oil

120 m


A GENERAL INFORMATION

SECTION

GI

GENERAL INFORMATION

GI

B

C

D

E

CONTENTS PRECAUTIONS .......................................................... 3 Description ............................................................... 3 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” .................................................................. 3 Precautions Necessary for Steering Wheel Rotation After Battery Disconnect .......................................... 3 OPERATION PROCEDURE ................................. 3 General Precautions ................................................ 4 Precautions for Three Way Catalyst ......................... 5 Precautions for Fuel (Unleaded Regular Gasoline Recommended) ........................................................ 5 Precautions for Multiport Fuel Injection System or Engine Control System ............................................ 6 Precautions for Hoses .............................................. 6 HOSE REMOVAL AND INSTALLATION ............... 6 HOSE CLAMPING ................................................ 6 Precautions for Engine Oils ...................................... 7 HEALTH PROTECTION PRECAUTIONS ............. 7 Precautions for Air Conditioning ............................... 7 HOW TO USE THIS MANUAL ................................... 8 Description ............................................................... 8 Terms ....................................................................... 8 Units ......................................................................... 8 Contents ................................................................... 8 Relation between Illustrations and Descriptions ..... 9 Components ........................................................... 10 SYMBOLS ........................................................... 10 How to Follow Trouble Diagnoses ...........................11 DESCRIPTION .....................................................11 HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES ................................................11 HARNESS WIRE COLOR AND CONNECTOR NUMBER INDICATION ....................................... 12 KEY TO SYMBOLS SIGNIFYING MEASUREMENTS OR PROCEDURES ............................... 13 How to Read Wiring Diagrams ............................... 15 CONNECTOR SYMBOLS ................................... 15 SAMPLE/WIRING DIAGRAM - EXAMPL - ......... 16

Revision: December 2006

DESCRIPTION .................................................... 17 Abbreviations .......................................................... 23 SERVICE INFORMATION FOR ELECTRICAL INCIDENT ......................................................................... 24 How to Check Terminal ........................................... 24 CONNECTOR AND TERMINAL PIN KIT ............ 24 HOW TO PROBE CONNECTORS ...................... 24 How to Perform Efficient Diagnosis for an Electrical Incident ................................................................... 27 WORK FLOW ...................................................... 27 INCIDENT SIMULATION TESTS ........................ 27 CIRCUIT INSPECTION ....................................... 30 Control Units and Electrical Parts ........................... 35 PRECAUTIONS .................................................. 35 CONSULT-III CHECKING SYSTEM ......................... 37 Description .............................................................. 37 Function and System Application ........................... 37 CONSULT-III Data Link Connector (DLC) Circuit ... 38 INSPECTION PROCEDURE .............................. 39 LIFTING POINT ......................................................... 40 Special Service Tools ............................................. 40 Garage Jack and Safety Stand and 2-Pole Lift ....... 40 Board-On Lift .......................................................... 41 TOW TRUCK TOWING ............................................. 42 Tow Truck Towing ................................................... 42 TOWING AN AUTOMATIC TRANSAXLE MODEL WITH FOUR WHEELS ON GROUND ... 42 Vehicle Recovery (Freeing a Stuck Vehicle) ........... 42 TIGHTENING TORQUE OF STANDARD BOLTS ... 43 Tightening Torque Table ......................................... 43 RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ............................................................... 44 Recommended Chemical Products and Sealants... 44 IDENTIFICATION INFORMATION ............................ 45 Model Variation ....................................................... 45 IDENTIFICATION NUMBER ................................ 46 VEHICLE IDENTIFICATION NUMBER ARRANGEMENT ................................................ 46 IDENTIFICATION PLATE .................................... 47 ENGINE SERIAL NUMBER ................................ 47

GI-1

2007 Sentra

F

G

H

I

J

K

L

M


MANUAL TRANSAXLE NUMBER ....................... 47 CVT NUMBER ..................................................... 47 Dimensions ............................................................. 48 Wheels & Tires ....................................................... 48

Revision: December 2006

TERMINOLOGY ........................................................49 SAE J1930 Terminology List ...................................49

GI-2

2007 Sentra


PRECAUTIONS PRECAUTIONS Description

PFP:00001

GI EAS0027H

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

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”

B

EAS002EM

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.

C

D

E

F

G

H

Precautions Necessary for Steering Wheel Rotation After Battery Disconnect EAS0027K

NOTE: ● This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYSTEM). ● Remove and install all control units after disconnecting both battery cables with the ignition knob in the ″LOCK″ position. ● Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results. For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mechanism is adopted on the key cylinder. For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and steering wheel rotation will become impossible. If steering wheel rotation is required when battery power is interrupted, follow the procedure below before starting the repair operation.

OPERATION PROCEDURE 1.

2. 3. 4. 5. 6.

Connect both battery cables. NOTE: Supply power using jumper cables if battery is discharged. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the steering lock will be released. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated. Perform the necessary repair operation. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting the battery cables. (At this time, the steering lock mechanism will engage.) Perform a self-diagnosis check of all control units using CONSULT-III.

Revision: December 2006

GI-3

2007 Sentra

I

J

K

L

M


PRECAUTIONS General Precautions ●

EAS0027L

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. SGI285

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. 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.

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 SGI233 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.

Revision: December 2006

GI-4

2007 Sentra


PRECAUTIONS ● ●

Use approved bonding agent, sealants or their equivalents when required. 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.

GI

B

C

PBIC0190E

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

D

E

F

G

SGI234

H

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.

I

Precautions for Three Way Catalyst

J

EAS0027M

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.

Precautions for Fuel (Unleaded Regular Gasoline Recommended)

EAS002DE

Use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti-Knock Index) number (research octane number 91). E-85 fuel (85% fuel ethanol, 15% unleaded gasoline) may only be used in vehicles specifically designed for E-85 fuel (i.e. Flexible Fuel Vehicle - FFV models). CAUTION: Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Using a fuel other than that specified could adversely affect the emission control devices and systems, and could also affect the warranty coverage validity. 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).

Revision: December 2006

GI-5

2007 Sentra

K

L

M


PRECAUTIONS Precautions for Multiport Fuel Injection System or Engine Control System ●

● ●

EAS0027O

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. SGI787

Precautions for Hoses

EAS0027P

HOSE REMOVAL AND INSTALLATION ●

To prevent damage to rubber hose, do not pry off rubber hose with tapered tool or screwdriver.

SMA019D

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

SMA020D

HOSE CLAMPING ●

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. Discard old clamps; replace with new ones.

SMA021D

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GI-6

2007 Sentra


PRECAUTIONS ●

After installing plate clamps, apply force to them in the direction of the arrow, tightening rubber hose equally all around.

GI

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C SMA022D

D

Precautions for Engine Oils

EAS0027Q

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.

E

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.

Precautions for Air Conditioning

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EAS0027R

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

L

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Revision: December 2006

GI-7

2007 Sentra


HOW TO USE THIS MANUAL HOW TO USE THIS MANUAL Description

PFP:00008 EAS0027S

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

Terms ●

EAS0027T

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 ●

EAS0027U

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. Also with regard to tightening torque of bolts and nuts, there are descriptions both about range and about the standard tightening torque. “Example” Range Outer Socket Lock Nut

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

Standard Drive Shaft Installation Bolt

: 44.3 N·m (4.5 kg-m, 33 ft-lb)

Contents

EAS0027V

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.

● ● ● ●

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GI-8

2007 Sentra


HOW TO USE THIS MANUAL Relation between Illustrations and Descriptions

EAS0027W

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

GI

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SAIA0519E

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2007 Sentra


HOW TO USE THIS MANUAL Components â—?

EAS0027X

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

8.

Piston

9.

Piston boot

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.

SYMBOLS

SAIA0749E

Revision: December 2006

GI-10

2007 Sentra


HOW TO USE THIS MANUAL How to Follow Trouble Diagnoses

EAS0027Y

GI

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 FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES G

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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:

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2007 Sentra


HOW TO USE THIS MANUAL 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 ● ● ●

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 (e.g. F211) indicate component connectors.

AGI070

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2007 Sentra


HOW TO USE THIS MANUAL TYPE 2: Harness Wire Color and Connector Number are Shown in Text GI

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SGI144A

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KEY TO SYMBOLS SIGNIFYING MEASUREMENTS OR PROCEDURES J

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SAIA1539E

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2007 Sentra


HOW TO USE THIS MANUAL

SAIA1540E

Revision: December 2006

GI-14

2007 Sentra


HOW TO USE THIS MANUAL How to Read Wiring Diagrams

EAS0027Z

GI

CONNECTOR SYMBOLS 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 those related to OBD, may use a new style slide-locking type harness connector. For description and how to disconnect, refer to PG section, “Description”, “HARNESS CONNECTOR”.

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H SAIA0257E

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

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SGI363

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2007 Sentra


HOW TO USE THIS MANUAL SAMPLE/WIRING DIAGRAM - EXAMPL ●

For detail, refer to following “DESCRIPTION”.

SGI091A

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2007 Sentra


HOW TO USE THIS MANUAL Optional Splice GI

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SGI942

I

DESCRIPTION Number 1

Item Power condition

2

Fusible link

3

Fusible link/fuse location

4

Fuse

5

Current rating

6

Connectors

J

Description ●

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

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.

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.

The single line shows that this is a fuse.

The open circle shows current flow in, and the shaded circle shows current flow out.

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

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.

Revision: December 2006

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2007 Sentra

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HOW TO USE THIS MANUAL Number

Item

Description ●

14

Wire color

This shows a code for the color of the wire. 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

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 15

Option description

16

Switch

17

Assembly parts

18

Cell code

19

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

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.

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

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

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 “ cuit operation.

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

Current flow arrow ” shows that current can flow in either direction depending on cir-

20

System branch

This arrow shows that the circuit continues to another page identified by cell code.

21

Page crossing

The C will match with the C on another page within the system other than the next or preceding pages.

22

Shielded line

The line enclosed by broken line circle shows shield wire.

23

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.

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.

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

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

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

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.

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.

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.

25

Connector number

26

Ground (GND)

27

Ground (GND)

28

Connector views

29

Common component

30

Connector color

31

Fusible link and fuse box

32

Reference area

Revision: December 2006

GI-18

2007 Sentra


HOW TO USE THIS MANUAL Harness Indication ● ●

GI

Letter designations next to test meter probe indicate harness (connector) wire color. Connector numbers in a single circle M33 indicate harness connectors.

B

C

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E

F

G AGI070

H

Component Indication Connector numbers in a double circle F211 indicate component connectors.

Switch Positions

I

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.

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SGI860

Revision: December 2006

GI-19

2007 Sentra


HOW TO USE THIS MANUAL Detectable Lines and Non-Detectable Lines In some wiring diagrams, two kinds of lines, representing wires, with different weight are used. ● 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.

SGI862-B

Revision: December 2006

GI-20

2007 Sentra


HOW TO USE THIS MANUAL Multiple Switch GI

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.

B

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K SGI875

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Revision: December 2006

GI-21

2007 Sentra


HOW TO USE THIS MANUAL Reference Area 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

Revision: December 2006

GI-22

2007 Sentra


HOW TO USE THIS MANUAL Abbreviations

EAS00280

GI

The following ABBREVIATIONS are used: ABBREVIATION

DESCRIPTION

A/C

Air Conditioner

A/T

Automatic Transaxle/Transmission

ATF

Automatic Transmission Fluid

CVT

Continuously Variable Transmission

D1

Drive range 1st gear

D2

Drive range 2nd gear

D3

Drive range 3rd gear

D4

Drive range 4th gear

FR, RR

Front, Rear

LH, RH

Left-Hand, Right-Hand

M/T

Manual Transaxle/Transmission

OD

Overdrive

B

D

E

F

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

C

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Revision: December 2006

GI-23

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT SERVICE INFORMATION FOR ELECTRICAL INCIDENT How to Check Terminal

PFP:00000 EAS00281

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

Revision: December 2006

GI-24

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT ●

Some connectors do not have a notch above each terminal. To probe each terminal, remove the connector retainer to make contact space for probing.

GI

B

C SEL266V

D

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

E

F

G SEL267V

How to Check Enlarged Contact Spring of Terminal

H

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.

I

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L SEL270V

3.

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.

M

SEL271V

Revision: December 2006

GI-25

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT 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

Revision: December 2006

GI-26

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT How to Perform Efficient Diagnosis for an Electrical Incident

EAS00282

GI

WORK FLOW

B

C

D

E

F

SGI838

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

STEP 2

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.

H

I

J

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

K

Get the proper diagnosis materials together including:

STEP 3

G

Power Supply Routing

System Operation Descriptions

Applicable Service Manual Sections

Check for any Service Bulletins

L

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 Revision: December 2006

GI-27

2007 Sentra

M


SERVICE INFORMATION FOR ELECTRICAL INCIDENT Freezing ● Water intrusion ● Electrical load ● 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.

Revision: December 2006

GI-28

2007 Sentra


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

Heat Sensitive

B

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.

C

D

E SGI842

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.

F

G

H

I SGI843

Water Intrusion

J

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.

K

L

M SGI844

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.

SGI845

Revision: December 2006

GI-29

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT 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 thorough 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.

Revision: December 2006

GI-30

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT VOLTAGE CHECK METHOD To help in understanding the diagnosis of open circuits please refer to the previous schematic. GI 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. B ● 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. C 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. D no voltage; open is between SW1 and relay (point B). ● Close the relay and probe at the solenoid. voltage; open is further down the circuit than the solenoid. E no voltage; open is between relay and solenoid (point C). Any powered circuit can be diagnosed using the approach in the previous example.

Testing for “Shorts” in the Circuit

F

To simplify the discussion of shorts in the system, please refer to the following schematic. G

H

I SGI847-A

J

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). Revision: December 2006

GI-31

2007 Sentra

K

L

M


SERVICE INFORMATION FOR ELECTRICAL INCIDENT

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. ● 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. Revision: December 2006

GI-32

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT If repairs are needed always use wire that is of the same or larger gauge. GI

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. Note in the illustration that there is an excessive 4.1 volt drop between the battery and the bulb.

B

C

D

E

F

G

H

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.

I

J

K

L

M

SAIA0258E

Revision: December 2006

GI-33

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT Control Unit Circuit Test System Description:When the switch is ON, the control unit lights up the lamp.

MGI034A

INPUT-OUTPUT VOLTAGE CHART 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

Condition

Voltage value [V]

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.

Revision: December 2006

GI-34

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT Control Units and Electrical Parts

EAS00283

GI

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.

B

C

D SAIA0251E

E

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.

F

G

H SAIA0252E

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.

I

J

K

SAIA0253E

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.

M

SAIA0254E

Revision: December 2006

GI-35

L

2007 Sentra


SERVICE INFORMATION FOR ELECTRICAL INCIDENT ● ●

● ● ●

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 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.

SAIA0255E

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

Revision: December 2006

GI-36

2007 Sentra


CONSULT-III CHECKING SYSTEM CONSULT-III CHECKING SYSTEM Description â—? â—?

PFP:00000

GI EAS002F3

When the CONSULT-III is connected with a data link 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. Refet to "CONSULT-III Software Operation Manual" for more information.

Function and System Application

EAS00285

NATS I-KEY*3,4

x

x

-

-

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 ECU can be read.

x

x

-

x

x

-

x

x

x

-

-

-

CAN diagnosis

Based on the condition of CAN communication line, diagnosis is automatically carried out.

-

-

-

-

-

-

-

-

-

-

-

-

CAN diagnostic support monitor

The communication condition of CAN communication line can be read.

x

x

-

x

x

x

x

x

x

-

-

-

Calibration data*2

Shows unit calibration IDs, offsets and gains. This data is stored in the ECU memory.

-

-

-

-

-

-

-

-

x

-

-

-

Active test

Diagnostic Test Mode in which CONSULT-III drives actuators apart from ECU shifting some parameters in a specified range.

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 self-diagnosis status/result can be confirmed.

x

-

-

-

-

-

-

-

-

-

-

-

DTC work support

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

x

-

-

-

-

-

-

-

-

-

-

-

ECM/ECU part number

ECM/ECU part number can be read.

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

-

-

-

-

-

-

-

-

-

NVIS (NATS)*3

-

TRANSMISSION*2

x

INTELLIGENT KEY*1

-

BCM

-

METER

-

IPDM E/R

-

EPS

x

ABS*1 AIR BAG

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

Function

ENGINE

NVIS (NATS BCM OR S/ENT)*3

C

Work support

Diagnostic test mode

E

G

H

I

J

K

L

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

-

-

x

-

-

-

-

-

-

-

-

-

Configuration

Sets control module parameters to match vehicle options.

-

-

-

-

-

x

-

-

-

-

-

-

Steering lock release*4

Condition of steering lock release solenoid.

-

-

-

-

-

-

-

-

-

-

x

-

Control unit initialization*4,5

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

-

-

-

-

-

-

-

-

-

x

-

-

PIN Read

This mode enables technician to get BCM-specific 5-digit code.

-

-

-

-

-

-

-

-

-

-

x

-

x: Applicable. *1: If equipped. *2: This option is shown on vehicles equipped with continuously variable transmission (CVT). *3: NVIS (NATS) [NISSAN Vehicle Immobilizer System (Nissan Anti-theft System)]. *4: With Intelligent Key System. *5: Without Intelligent Key System.

GI-37

D

F

Passenger airbag

Revision: December 2006

B

2007 Sentra

M


CONSULT-III CHECKING SYSTEM CONSULT-III Data Link Connector (DLC) Circuit

EAS00289

WAWA0018E

Revision: December 2006

GI-38

2007 Sentra


CONSULT-III CHECKING SYSTEM INSPECTION PROCEDURE GI

If the CONSULT-III cannot diagnose the system properly, check the following items. Symptom CONSULT-III cannot access any system.

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

Check item

B

CONSULT-III DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4). ●

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-III DLC (For detailed circuit, refer to wiring diagram for each system).

Open or short circuit CAN communication line. Refer to LAN-7, "TROUBLE DIAGNOSIS" .

C

D

NOTE: The DDL1 and DDL2 circuits from DLC pins 6, 7 and 14 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-III access to other systems.

E

F

G

H

I

J

K

L

M

Revision: December 2006

GI-39

2007 Sentra


LIFTING POINT LIFTING POINT Special Service Tools

PFP:00000 EAS0028A

Tool number Tool name

Description

LM4086-0200 Board on attachment

S-NT001

LM4519-0000 Safety stand attachment

S-NT002

CAUTION: ● Every time the vehicle is lifted up, maintain the complete vehicle curb condition. ● Since the vehicle's center of gravity changes when removing main parts on the front side (engine, transmission, suspension etc.), support a jack up point on the rear side garage jack with a mission jack or equivalent. ● Since the vehicle's center of gravity changes when removing main parts on the rear side (rear axle, suspension, etc.), support a jack up point on the front side garage jack with a mission jack or equivalent. ● Be careful not to smash or do not do anything that would affect piping parts.

Garage Jack and Safety Stand and 2-Pole Lift

EAS0028B

WARNING: ● Park the vehicle on a level surface when using the jack. Make sure to avoid damaging pipes, tubes, etc. under the vehicle. ● Never get under the vehicle while it is supported only by the jack. Always use safety stands when you have to get under the vehicle. ● Place wheel chocks at both front and back of the wheels on the ground. ● 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. ● When setting the lift arm, do not allow the arm to contact the brake tubes, brake cable, fuel lines and sill spoiler.

Revision: December 2006

GI-40

2007 Sentra


LIFTING POINT GI

B

C

D

E

F PIIB2498E

1.

Safety stand point and lift up point (front) 2.

4.

Garage jack point (rear)

Safety stand point and lift up point (rear)

3.

Garage jack point (front)

G

CAUTION: There is canister just behind Garage jack point rear. Jack up be carefully.

Board-On Lift

H EAS0028C

CAUTION: Make sure vehicle is empty when lifting. â—? The board-on lift attachment (LM4086-0200) set at front end of vehicle should be set on the front of the sill under the front door opening. â—? Position attachments at front and rear ends of board-on lift.

I

J

K

L AGI016

M

Revision: December 2006

GI-41

2007 Sentra


TOW TRUCK TOWING TOW TRUCK TOWING Tow Truck Towing

PFP:00000 EAS0028D

CAUTION: ● All applicable local laws regarding the towing operation must be obeyed. ● It is necessary to use proper towing equipment to avoid possible damage to the vehicle 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 power train are in good order. If any unit is damaged, dollies must be used. NISSAN recommends that the vehicle be towed with the driving (front) wheels off the ground as illustrated.

PIIB6801E

TOWING AN AUTOMATIC TRANSAXLE MODEL WITH FOUR WHEELS ON GROUND CAUTION: Never tow an automatic transaxle model with four wheels on the ground as this may cause serious and expensive damage to the transaxle.

Vehicle Recovery (Freeing a Stuck Vehicle)

EAS0028E

Tow chains or cables must be attached only to the main structural members of the vehicle. Pulling devices should be routed so they do not touch any part of the suspension, steering, brake or cooling systems. ● Always pull the cable straight out from the front or rear of the vehicle. Never pull on the vehicle at an angle. ● Pulling devices such as ropes or canvas straps are not recommended for use in vehicle towing or recovery. WARNING: ● Do not spin the tires at high speed. This could cause them to explode and result in serious injury. Parts of the vehicle could also overheat and be damaged. ● Do not use the hook to tow the vehicle. ● ●

PIIB2499E

Revision: December 2006

GI-42

2007 Sentra


TIGHTENING TORQUE OF STANDARD BOLTS TIGHTENING TORQUE OF STANDARD BOLTS Tightening Torque Table Grade

Bolt size

M6

4T

7T

9T

Bolt diameter * mm 6.0

M8

8.0

M10

10.0

PFP:00000

GI EAS0028F

Tightening torque (Without lubricant) Pitch mm

Hexagon head bolt N·m

kg-m

B

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

1.25

45

4.6

33

65

6.6

48

M12

12.0

M14

14.0

1.5

80

8.2

59

100

10

74

M6

6.0

1.0

9

0.92

7

80

11

1.1

8

97

1.25

22

2.2

16

28

2.9

21

M8

8.0

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

M10

10.0

M12

12.0

M14

14.0

1.5

130

13

96

170

17

125

M6

6.0

1.0

11

1.1

8

13.5

1.4

10

1.25

28

2.9

21

35

3.6

26

M8

8.0

1.0

28

2.9

21

35

3.6

26

1.5

55

5.6

41

80

8.2

59

1.25

55

5.6

41

80

8.2

59

1.75

100

10

74

130

13

96

1.25

100

10

74

130

13

96

1.5

170

17

125

210

21

155

M10

10.0

M12

12.0

M14

14.0

C

D

E

F

G

H

I

J

K

L

*: Nominal diameter 1. Special parts are excluded. 2. This standard is applicable to bolts having the following marks embossed on the bolt head.

M

MGI044A

Revision: December 2006

GI-43

2007 Sentra


RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS Recommended Chemical Products and Sealants

PFP:00000 EAS0028G

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

1

2

3

Purpose

999MP-AM000P

99998-50505

Permatex 81844

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.

999MP-AM001P

99998-50503

Permatex 51813 and 51817

999MP-AM002P

999MP-AM002P

Permatex 56521

99998-50506 (Ultra Grey)

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

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.

999MP-AM003P (Ultra Grey)

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

6

Aftermarket Crossreference Part Nos.

Used to permanently remount rear view mirrors to windows.

Gasket Maker

5

Nissan Canada Part No. (Canada)

Rear View Mirror Adhesive

4

Nissan North America Part No. (USA)

High Temperature, High Strength Thread Locking Sealant (Red)

Medium Strength Thread Locking Sealant (Blue)

Revision: December 2006

Threadlocker

Threadlocker (service tool removable)

999MP-AM004P

999MP-AM005P

GI-44

Three Bond 1281B or exact equivalent in its quality

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

2007 Sentra


IDENTIFICATION INFORMATION IDENTIFICATION INFORMATION Model Variation

PFP:00010

GI EAS0028H

Destination Body

Engine

Transmission

Grade

USA

Canada

BDRALCY-EUA

BDRALCY-ENA

BDRALCZ-EUA

BDRALCZ-ENA

BDRALEY-EUA

BDRALEY-ENA

BDRALEZ-EUA

BDRALEZ-ENA

SL

BDRALGZ-EUA

BDRALGZ-ENA

CVT

SER

BDBALUZ-EUA

BDBALUZ-ENA

6 M/T

SE-R Spec V

BDBALUY-EUA

BDBALUY-ENA

6 M/T CVT Sedan

MR20DE

6 M/T CVT CVT

Sedan

Base

QR25DE

S

B

C

D

E

Model code designations: Position (Left to Right)

Character

1

B

2 3

DR DB

4 5

Qualifier

Definition

Body type

B: 4 Door sedan

Engine

DR:MR20DE DB:QR25DE

A

Axle

A: 2WD model

L

Handle

L: LH drive

6

C

Grade

C: 2.0 E: 2.0 S G: 2.0 SL U: SE-R / SE-R Spec V

7

Y

Transmission

Y: 6 M/T Z: CVT

F

G

H

I

J

8 9

B16

Model

B16: Sentra

K

10 11

E

Intake

E: EGI

12

U

Zone

U: Federal (50 state) N: Canada

13

A

Equipment

A: Standard

L

14

M

15 16

xxxxx

Option Codes

17 18

Revision: December 2006

GI-45

2007 Sentra


IDENTIFICATION INFORMATION IDENTIFICATION NUMBER

LAIA0076E

1.

VIN number

2.

Chassis number

3.

4.

Tire placard label

5.

FMVSS/CMVSS certification

Emissions control label

VEHICLE IDENTIFICATION NUMBER ARRANGEMENT VIN Position (Left to Right)

Character

Qualifier

Definition

1 2

3N1

Country code and vehicle manufacturer

3N1: Mexico

Engine

A: MR20DE B: QR25DE

Vehicle type

B6: NISSAN Sentra

3 4

A

5

B

6

6

7

1

Body type

4-door sedan

8

E

Restraint system

E: Driver and front passenger SRS air bag, SRS side air bags, SRS side curtain air bags and 3 point manual seat belts

9

*

Check digit

0 to 9 or X

10

7

Model year

7: 2007 Model year

11

L

Manufacturing Plant

L: Aguascalientes, Mexico

Vehicle serial number

Chassis number

12 13 14 15

XXXXXX

16 17

Revision: December 2006

GI-46

2007 Sentra


IDENTIFICATION INFORMATION IDENTIFICATION PLATE GI

B

C

D

E

F LAIA0027E

ENGINE SERIAL NUMBER

G

H

I

WAIA0115E

J

MANUAL TRANSAXLE NUMBER K

L

M PCIB1612E

CVT NUMBER

LAIA0074E

Revision: December 2006

GI-47

2007 Sentra


IDENTIFICATION INFORMATION Dimensions

EAS0028I

Unit: mm (in) Description

All Except SE-R

Overall length

SE-R

Spec V

4567.2 (179.8)

4575.3 (180.1)

Overall width

1,790.0 (70.5)

Overall height

1,511.8 (59.5)

1511.8 (59.5)

Front tread

1501.9 (59.1)

1519.8 (59.5)

Rear tread

1544.0 (60.8)

Wheelbase

2,685.0 (105.7)

Wheels & Tires

EAS0028J

Grade

Road wheel material

Road wheel size

Tire

2.0

Steel

6.5 JJ x 15

P205/60 HR15

6.5 JJ x 16

P205/55 HR16

2.0 S 2.0SL

SE-R

Steel Aluminum Alloy

Spare tire size

T125/70 D16

Aluminum Alloy

Aluminum Alloy

Revision: December 2006

7.0 JJ x 17

GI-48

P225/45 WR17 (Summer Tires) P225/45VR17 (All Season Tires)

T135/70 D17

2007 Sentra


TERMINOLOGY TERMINOLOGY SAE J1930 Terminology List

PFP:00011

GI EAS0028K

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

C

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

***

D

E

F

G

H

I

J

K

L

M

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 2006

B

GI-49

2007 Sentra


TERMINOLOGY 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

EGRT sensor

Exhaust gas 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

Exhaust gas recirculation temperature sensor EGR temperature sensor

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

***

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 2006

GI-50

2007 Sentra


TERMINOLOGY NEW ACRONYM / ABBREVIATION

NEW TERM

OLD TERM

GI

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

B

C

D

E

F

G

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 2006

H

I

J

K

GI-51

L

M

2007 Sentra


TERMINOLOGY 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 system

WU-TWC system

***

Wide open throttle position switch

WOTP switch

Full switch

***: Not applicable

Revision: December 2006

GI-52

2007 Sentra


B ENGINE

SECTION

EM

ENGINE MECHANICAL

A

EM

C

D

E

CONTENTS MR20DE PRECAUTIONS .......................................................... 5 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” .................................................................. 5 Precautions for Procedures without Cowl Top Cover..... 5 Precautions Necessary for Steering Wheel Rotation After Battery Disconnect .......................................... 5 OPERATION PROCEDURE ................................. 5 Precautions for Drain Coolant .................................. 6 Precautions for Disconnecting Fuel Piping .............. 6 Precautions for Removal and Disassembly ............. 6 Precautions for Inspection, Repair and Replacement ......................................................................... 6 Precautions for Assembly and Installation ............... 6 Parts Requiring Angular Tightening ......................... 6 Precautions for Liquid Gasket .................................. 7 REMOVAL OF LIQUID GASKET SEALING .......... 7 LIQUID GASKET APPLICATION PROCEDURE..... 7 PREPARATION ........................................................... 9 Special Service Tools ............................................... 9 Commercial Service Tools .......................................11 NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING .............................................. 13 NVH Troubleshooting — Engine Noise .................. 13 Use the Chart Below to Help You Find the Cause of the Symptom. ..................................................... 14 DRIVE BELTS ........................................................... 15 Components ........................................................... 15 Checking Drive Belts .............................................. 15 Tension Adjustment ................................................ 15 Removal and Installation ........................................ 15 REMOVAL ........................................................... 15 INSTALLATION ................................................... 16 Components ........................................................... 16 Removal and Installation of Drive Belt Auto-Tensioner ..................................................................... 16 REMOVAL ........................................................... 16 INSTALLATION ................................................... 17

Revision: December 2006

AIR CLEANER AND AIR DUCT ............................... 18 Components ........................................................... 18 Removal and Installation ........................................ 18 REMOVAL ........................................................... 18 INSTALLATION ................................................... 18 Changing Air Cleaner Filter .................................... 19 REMOVAL ........................................................... 19 INSPECTION AFTER REMOVAL ....................... 19 INSTALLATION ................................................... 19 INTAKE MANIFOLD ................................................. 20 Components ........................................................... 20 Removal and Installation ........................................ 20 REMOVAL ........................................................... 20 INSTALLATION ................................................... 21 INSPECTION AFTER INSTALLATION ................ 22 EXHAUST MANIFOLD ............................................. 23 Components ........................................................... 23 Removal and Installation ........................................ 23 REMOVAL ........................................................... 23 INSPECTION AFTER REMOVAL ....................... 24 INSTALLATION ................................................... 24 OIL PAN .................................................................... 26 Components ........................................................... 26 Removal and Installation ........................................ 26 REMOVAL ........................................................... 26 INSPECTION AFTER REMOVAL ....................... 28 INSTALLATION ................................................... 28 IGNITION COIL, SPARK PLUG AND ROCKER COVER ...................................................................... 32 Components ........................................................... 32 Removal and Installation ........................................ 32 REMOVAL ........................................................... 32 INSPECTION AFTER REMOVAL ....................... 33 INSTALLATION ................................................... 33 FUEL INJECTOR AND FUEL TUBE ........................ 35 Components ........................................................... 35 Removal and Installation ........................................ 35 REMOVAL ........................................................... 35 INSTALLATION ................................................... 37

EM-1

2007 Sentra

F

G

H

I

J

K

L

M


TIMING CHAIN .......................................................... 39 Components ........................................................... 39 Removal and Installation ........................................ 40 REMOVAL ........................................................... 40 INSPECTION AFTER REMOVAL ........................ 43 INSTALLATION .................................................... 43 CAMSHAFT ............................................................... 48 Components ........................................................... 48 Removal and Installation ........................................ 48 REMOVAL ........................................................... 48 INSPECTION AFTER REMOVAL ........................ 50 INSTALLATION .................................................... 52 INSPECTION AFTER INSTALLATION ................ 55 Valve Clearance ...................................................... 56 INSPECTION ....................................................... 56 ADJUSTMENT .................................................... 58 OIL SEAL .................................................................. 60 Removal and Installation of Valve Oil Seal ............. 60 REMOVAL ........................................................... 60 INSTALLATION .................................................... 60 Removal and Installation of Front Oil Seal ............. 61 REMOVAL ........................................................... 61 INSTALLATION .................................................... 61 Removal and Installation of Rear Oil Seal .............. 62 REMOVAL ........................................................... 62 INSTALLATION .................................................... 62 CYLINDER HEAD ..................................................... 63 On-Vehicle Service ................................................. 63 CHECKING COMPRESSION PRESSURE ......... 63 Components ........................................................... 64 Removal and Installation ........................................ 64 REMOVAL ........................................................... 64 INSPECTION AFTER REMOVAL ........................ 65 INSTALLATION .................................................... 66 Components ........................................................... 67 Disassembly and Assembly .................................... 67 DISASSEMBLY ................................................... 67 ASSEMBLY ......................................................... 68 Inspection After Disassembly ................................. 69 VALVE DIMENSIONS .......................................... 69 VALVE GUIDE CLEARANCE .............................. 69 VALVE GUIDE REPLACEMENT ......................... 70 VALVE SEAT CONTACT ..................................... 71 VALVE SEAT REPLACEMENT ........................... 71 VALVE SPRING SQUARENESS ......................... 72 VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD ............................... 73 CYLINDER BLOCK ................................................... 74 Components ........................................................... 74 Disassembly and Assembly .................................... 75 DISASSEMBLY ................................................... 75 ASSEMBLY ......................................................... 78 How to Select Piston and Bearing .......................... 84 DESCRIPTION .................................................... 84 HOW TO SELECT PISTON ................................. 84 HOW TO SELECT CONNECTING ROD BEARING ...................................................................... 85

Revision: December 2006

HOW TO SELECT MAIN BEARING ....................88 Inspection After Disassembly ..................................92 CRANKSHAFT END PLAY ..................................92 CONNECTING ROD SIDE CLEARANCE ...........92 PISTON TO PISTON PIN OIL CLEARANCE .......92 PISTON RING SIDE CLEARANCE .....................93 PISTON RING END GAP ....................................93 CONNECTING ROD BEND AND TORSION .......94 CONNECTING ROD BIG END DIAMETER ........94 CONNECTING ROD BUSHING OIL CLEARANCE ...................................................................94 CYLINDER BLOCK TOP SURFACE DISTORTION ....................................................................95 MAIN BEARING HOUSING INNER DIAMETER...95 PISTON TO CYLINDER BORE CLEARANCE ...96 CRANKSHAFT MAIN JOURNAL DIAMETER .....97 CRANKSHAFT PIN JOURNAL DIAMETER ........97 OUT-OF-ROUND AND TAPER OF CRANKSHAFT .................................................................97 CRANKSHAFT RUNOUT ....................................97 CONNECTING ROD BEARING OIL CLEARANCE ...................................................................98 MAIN BEARING OIL CLEARANCE .....................98 MAIN BEARING CRUSH HEIGHT ......................99 CONNECTING ROD BEARING CRUSH HEIGHT ...............................................................99 MAIN BEARING CAP BOLT OUTER DIAMETER.100 CONNECTING ROD BOLT OUTER DIAMETER.100 CLOGGED OR DAMAGED OIL FILTER (FOR INTAKE VALVE TIMING CONTROL) ................. 100 FLYWHEEL DEFLECTION (M/T MODELS) ...... 100 MOVEMENT AMOUNT OF FLYWHEEL (M/T MODELS) ........................................................... 100 ENGINE ASSEMBLY ............................................... 102 Components .......................................................... 102 Removal and Installation ....................................... 102 REMOVAL .......................................................... 103 INSTALLATION .................................................. 104 INSPECTION AFTER INSTALLATION .............. 105 SERVICE DATA AND SPECIFICATIONS (SDS) .... 106 Standard and Limit ................................................ 106 GENERAL SPECIFICATIONS ........................... 106 DRIVE BELT ...................................................... 106 WATER CONTROL VALVE ................................ 106 EXHAUST MANIFOLD ...................................... 106 THERMOSTAT ................................................... 106 SPARK PLUG .................................................... 106 CYLINDER HEAD .............................................. 106 VALVE ................................................................ 107 CAMSHAFT AND CAMSHAFT BEARING ......... 110 CYLINDER BLOCK ............................................ 111 PISTON, PISTON RING AND PISTON PIN ...... 112 CONNECTING ROD .......................................... 113 CRANKSHAFT ................................................... 113 MAIN BEARING ................................................. 115 CONNECTING ROD BEARING ......................... 115

EM-2

2007 Sentra


QR25DE PRECAUTIONS .......................................................117 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” ...............................................................117 Precautions for Draining Coolant ..........................117 Precautions for Disconnecting Fuel Piping ...........117 Precautions for Removal and Disassembly ..........117 Precautions for Inspection, Repair and Replacement ......................................................................117 Precautions for Assembly and Installation ............117 Parts Requiring Angular Tightening ......................118 Precautions for Liquid Gasket ...............................118 REMOVAL OF LIQUID GASKET SEALING .......118 LIQUID GASKET APPLICATION PROCEDURE..118 PREPARATION ....................................................... 120 Special Service Tools ........................................... 120 Commercial Service Tools .................................... 123 NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING ............................................ 125 NVH Troubleshooting —Engine Noise ................. 125 Use the Chart Below to Help You Find the Cause of the Symptom. ................................................... 126 DRIVE BELTS ......................................................... 127 Checking Drive Belts ............................................ 127 Tension Adjustment .............................................. 127 Removal and Installation ...................................... 127 REMOVAL ......................................................... 127 INSTALLATION ................................................. 128 Removal and Installation of Drive Belt Auto-tensioner ................................................................... 128 REMOVAL ......................................................... 128 INSTALLATION ................................................. 128 AIR CLEANER AND AIR DUCT ............................. 130 Removal and Installation ...................................... 130 REMOVAL ......................................................... 130 INSTALLATION ................................................. 130 CHANGING THE AIR CLEANER ELEMENT .... 131 INTAKE MANIFOLD ............................................... 132 Removal and Installation ...................................... 132 REMOVAL ......................................................... 132 INSPECTION AFTER REMOVAL ..................... 134 INSTALLATION ................................................. 134 INSPECTION AFTER INSTALLATION ............. 135 EXHAUST MANIFOLD AND THREE WAY CATALYST ....................................................................... 136 Removal and Installation ...................................... 136 REMOVAL ......................................................... 136 INSPECTION AFTER REMOVAL ..................... 137 INSTALLATION ................................................. 137 OIL PAN AND OIL STRAINER ............................... 138 Removal and Installation ...................................... 138 REMOVAL ......................................................... 138 INSPECTION AFTER REMOVAL ..................... 139 INSTALLATION ................................................. 139 INSPECTION AFTER INSTALLATION ............. 140

Revision: December 2006

IGNITION COIL ....................................................... 141 Removal and Installation ...................................... 141 REMOVAL ......................................................... 141 INSTALLATION ................................................. 141 SPARK PLUG ......................................................... 142 Removal and Installation ...................................... 142 REMOVAL ......................................................... 142 INSPECTION AFTER REMOVAL ..................... 142 INSTALLATION ................................................. 143 FUEL INJECTOR AND FUEL TUBE ...................... 144 Removal and Installation ...................................... 144 REMOVAL ......................................................... 144 INSTALLATION ................................................. 145 INSPECTION AFTER INSTALLATION .............. 146 ROCKER COVER ................................................... 147 Removal and Installation ...................................... 147 REMOVAL ......................................................... 147 INSTALLATION ................................................. 147 CAMSHAFT ............................................................ 149 Removal and Installation ...................................... 149 REMOVAL ......................................................... 149 INSPECTION AFTER REMOVAL ..................... 151 INSTALLATION ................................................. 154 INSPECTION AFTER INSTALLATION ................. 156 INSPECTION OF CAMSHAFT SPROCKET (INT) OIL GROOVE ........................................... 156 Valve Clearance ................................................... 157 INSPECTION .................................................... 157 ADJUSTMENT .................................................. 158 TIMING CHAIN ........................................................ 160 Removal and Installation ...................................... 160 REMOVAL ......................................................... 161 INSPECTION AFTER REMOVAL ..................... 164 INSTALLATION ................................................. 164 OIL SEAL ................................................................ 168 Removal and installation of Valve Oil Seal ........... 168 REMOVAL ......................................................... 168 INSTALLATION ................................................. 168 Removal and Installation of Front Oil Seal ........... 169 REMOVAL ......................................................... 169 INSTALLATION ................................................. 169 Removal and Installation of Rear Oil Seal ............ 170 REMOVAL ......................................................... 170 INSTALLATION ................................................. 170 CYLINDER HEAD ................................................... 171 On-Vehicle Service ............................................... 171 CHECKING COMPRESSION PRESSURE ....... 171 Removal and Installation ...................................... 172 REMOVAL ......................................................... 172 INSPECTION AFTER REMOVAL ..................... 172 INSTALLATION ................................................. 173 Disassembly and Assembly .................................. 174 DISASSEMBLY ................................................. 174

EM-3

2007 Sentra

A

EM

C

D

E

F

G

H

I

J

K

L

M


ASSEMBLY ....................................................... 175 Inspection After Disassembly ............................... 176 CYLINDER HEAD DISTORTION ...................... 176 VALVE DIMENSIONS ........................................ 176 VALVE GUIDE CLEARANCE ............................ 176 VALVE GUIDE REPLACEMENT ....................... 177 VALVE SEAT CONTACT ................................... 178 VALVE SEAT REPLACEMENT ......................... 178 VALVE SPRING SQUARENESS ....................... 179 VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD ............................. 179 ENGINE ASSEMBLY .............................................. 181 Removal and Installation ...................................... 181 REMOVAL ......................................................... 182 INSTALLATION .................................................. 183 INSPECTION AFTER INSTALLATION .............. 183 CYLINDER BLOCK ................................................. 184 Disassembly and Assembly .................................. 184 DISASSEMBLY ................................................. 185 ASSEMBLY ....................................................... 187 How to Select Piston and Bearing ........................ 192 DESCRIPTION .................................................. 192 HOW TO SELECT A PISTON ........................... 192 HOW TO SELECT A CONNECTING ROD BEARING .................................................................... 193 HOW TO SELECT A MAIN BEARING .............. 195 Inspection After Disassembly ............................... 198 CRANKSHAFT SIDE CLEARANCE .................. 198 CONNECTING ROD SIDE CLEARANCE ......... 199 PISTON AND PISTON PIN CLEARANCE ........ 199 PISTON RING SIDE CLEARANCE ................... 200 PISTON RING END GAP .................................. 200 CONNECTING ROD BEND AND TORSION ..... 200 CONNECTING ROD BEARING (BIG END) ...... 201 CONNECTING ROD BUSHING OIL CLEAR-

Revision: December 2006

ANCE (SMALL END) ......................................... 201 CYLINDER BLOCK DISTORTION .................... 202 INNER DIAMETER OF MAIN BEARING HOUSING ..................................................................... 202 PISTON TO CYLINDER BORE CLEARANCE . 203 OUTER DIAMETER OF CRANKSHAFT JOURNAL .................................................................... 204 OUTER DIAMETER OF CRANKSHAFT PIN .... 204 OUT-OF-ROUND AND TAPER OF CRANKSHAFT ............................................................... 204 CRANKSHAFT RUNOUT .................................. 204 OIL CLEARANCE OF CONNECTING ROD BEARING ........................................................... 205 OIL CLEARANCE OF MAIN BEARING ............. 205 CRUSH HEIGHT OF MAIN BEARING .............. 206 OUTER DIAMETER OF LOWER CYLINDER BLOCK BOLT ..................................................... 206 OUTER DIAMETER OF CONNECTING ROD BOLT .................................................................. 206 MOVEMENT AMOUNT OF FLYWHEEL (M/T MODEL) ............................................................. 206 SERVICE DATA AND SPECIFICATIONS (SDS) .... 208 Standard and Limit ................................................ 208 GENERAL SPECIFICATIONS ........................... 208 DRIVE BELTS .................................................... 208 INTAKE MANIFOLD AND EXHAUST MANIFOLD ................................................................. 208 SPARK PLUG .................................................... 208 CYLINDER HEAD .............................................. 209 VALVE ................................................................ 209 CAMSHAFT AND CAMSHAFT BEARING ......... 212 CYLINDER BLOCK ............................................ 213 PISTON, PISTON RING, AND PISTON PIN ...... 214 CONNECTING ROD .......................................... 215 CRANKSHAFT ................................................... 216 MAIN BEARING ................................................. 217 CONNECTING ROD BEARING ......................... 218

EM-4

2007 Sentra


PRECAUTIONS [MR20DE]

PRECAUTIONS PFP:00001 Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”

A

EBS00Z94

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along EM 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 C 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. D 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. E ● 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. F ● 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. G

Precautions for Procedures without Cowl Top Cover

EBS00Z95

When performing the procedure after removing cowl top cover, cover the lower end of windshield.

H

I

J

PIIB3706J

K

Precautions Necessary for Steering Wheel Rotation After Battery Disconnect EBS00Z96

NOTE: ● This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYSTEM). ● Remove and install all control units after disconnecting both battery cables with the ignition knob in the ″LOCK″ position. ● Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results. For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mechanism is adopted on the key cylinder. For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and steering wheel rotation will become impossible. If steering wheel rotation is required when battery power is interrupted, follow the procedure below before starting the repair operation.

OPERATION PROCEDURE 1.

2.

Connect both battery cables. NOTE: Supply power using jumper cables if battery is discharged. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the steering lock will be released.

Revision: December 2006

EM-5

2007 Sentra

L

M


PRECAUTIONS [MR20DE] 3. 4. 5. 6.

Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated. Perform the necessary repair operation. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting the battery cables. (At this time, the steering lock mechanism will engage.) Perform a self-diagnosis check of all control units using CONSULT-II.

Precautions for Drain Coolant ●

EBS00Z97

Drain coolant when engine is cooled.

Precautions for Disconnecting Fuel Piping ● ● ●

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

Precautions for Removal and Disassembly ● ● ● ● ●

● ● ● ● ● ●

– – – – –

EBS00Z9B

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 oil or 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. Release air within route after draining 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 coolant, fuel, oil, and exhaust systems for leakage.

Parts Requiring Angular Tightening ●

EBS00Z9A

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

Precautions for Assembly and Installation ●

EBS00Z99

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.

Precautions for Inspection, Repair and Replacement ●

EBS00Z98

EBS00Z9C

Use an angle wrench for the final tightening of the following engine parts: Cylinder head bolts Camshaft sprocket (INT) Main bearing cap bolts Connecting rod cap nuts Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angular tightening) Tool number

Revision: December 2006

: KV10112100 (BT-8653-A)

EM-6

2007 Sentra


PRECAUTIONS [MR20DE] ● ● ●

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 coated with engine oil.

Precautions for Liquid Gasket

A

EBS00Z9D

REMOVAL OF LIQUID GASKET SEALING ●

After removing the bolts and nuts, separate the mating surface and remove the sealant using Tool. Tool number

EM

C

: KV10111100 (J-37228)

CAUTION: Be careful not to damage the mating surfaces. ● In areas where the cutter is difficult to use, use a plastic hammer to lightly tap (1) the cutter where the RTV Silicone Sealant is applied. Use a plastic hammer to slide the cutter (2) by tapping on the side. CAUTION: If for some unavoidable reason a tool such as a flat-bladed screwdriver is used, be careful not to damage the mating surfaces.

D

E WBIA0566E

F

LIQUID GASKET APPLICATION PROCEDURE 1.

2.

3.

Using a scraper, remove the old Silicone RTV Sealant adhering to the gasket application surface and the mating surface. ● Remove the sealant completely from the groove of the gasket application surface, bolts, and bolt holes. Thoroughly clean the gasket application surface and the mating surface and remove adhering moisture, grease and foreign materials. Attach the sealant tube to the tube presser. Use Genuine Silicone RTV Sealant or equivalent. Refer to GI-44, "Recommended Chemical Products and Sealants" .

G

H

I

PBIC0003E

4.

Apply the sealant without breaks to the specified location using Tool. Tool number ● ●

● ● ● ●

WS39930000 (

K

)

If there is a groove for the sealant application, apply the sealant to the groove. As for the bolt holes, normally apply the sealant inside the holes. If specified, it should be applied outside the holes. Make sure to read the text of this manual. Within five minutes of the sealant application, install the mating component. If the sealant protrudes, wipe it off immediately. Do not retighten after the installation. After 30 minutes or more have passed from the installation, fill the engine with the specified oil and coolant. Refer to MA-14, "MR20DE" .

L

M WBIA0567E

SEM159F

Revision: December 2006

J

EM-7

2007 Sentra


PRECAUTIONS [MR20DE] CAUTION: Follow all specific instructions in this manual.

Revision: December 2006

EM-8

2007 Sentra


PREPARATION [MR20DE]

PREPARATION Special Service Tools

PFP:00002

A EBS00Z9E

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Description Tool number (Kent-Moore No.) Tool name

EM

Removing steel oil pan and rear timing chain case

KV10111100 (J-37228) Seal cutter

C

D NT046

Tightening bolts for bearing cap, cylinder head, etc.

KV10112100 (BT-8653-A) Angle wrench

E

F

NT014

G Removing valve oil seal

KV10107902 (J-38959) Valve oil seal puller

H

I

S-NT011

EM03470000 (J-8037) Piston ring compressor

Installing piston assembly into cylinder bore

J

K NT044

Disassembling and assembling valve mechanism

KV101092S0 (J-26336-B) Valve spring compressor 1 KV10109210 (J-26336-20) Attachment 2 KV10109220 ( — ) 3. KV10109230 Adapter (M8) WS39930000 ( — Tube presser

M

NT718

Pressing the tube of liquid gasket )

NT052

Revision: December 2006

L

EM-9

2007 Sentra


PREPARATION [MR20DE] Tool number (Kent-Moore No.) Tool name

Description

ST16610001 (J-23907) Pilot bushing puller

Removing crankshaft pilot bushing

NT045

Removing crankshaft pulley

KV11103000 (—) Pulley puller

NT676

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

KV991J0050 (J-44626) Air fuel sensor Socket

LBIA0444E

KV10114400 (J-38365) Heated oxygen sensor wrench

Loosening or tightening rear heated oxygen sensor a: 22 mm (0.87 in)

NT636

KV11105210 (J-44716) Stopper plate

Securing diveplate and flywheel

ZZA0009D

KV10115600 (J-38958) Valve oil seal drift

S-NT603

Installing valve oil seal Use side A. a: 20 (0.79) dia b: 13 (0.51) dia. c: 10.3 (0.406) dia d: 8 (0.31) dia. e: 10.7 (0.421) f: 5 (0.20) Removing and installing oil filter a: 64.3 mm (2.531 in)

KV10115801 ( — ) Oil filter wrench

S-NT375

Revision: December 2006

EM-10

2007 Sentra


PREPARATION [MR20DE]

Commercial Service Tools

EBS00Z9F

A (Kent-Moore No.) Tool name

Description

(BT-3373-F) Belt tension gauge

Checking drive belt tension

EM

C AMA126

Power tool

D

Loosening bolts and nuts

E

F

PBIC0190E

Spark plug wrench

Removing and installing spark plug

G

H PBIC2982E

Valve seat cutter set

Finishing valve seat dimensions

I

J NT048

Piston ring expander

Removing and installing piston ring

K

L NT030

KV10109300 ( — ) Pulley holder

Removing and installing crankshaft pulley

NT628

KV10111800 Valve guide drift

Removing and installing valve guide

PBIC4012E

Revision: December 2006

EM-11

2007 Sentra

M


PREPARATION [MR20DE] (Kent-Moore No.) Tool name

Description

Valve guide reamer

(1): Reaming valve guide inner hole (2): Reaming hole for oversize valve guide

PBIC4013E

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

AEM488

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

Reconditioning the exhaust system threads before installing a new oxygen sensor and Air Fuel ratio sensor (Use with anti-seize lubricant shown below.) a: J-43897-18 (18 mm dia.) Air Fuel ratio sensors b: J-43897-12 (12 mm dia.) Air Fuel ratio sensorsr Lubricating oxygen sensor thread cleaning tool when reconditioning exhaust system threads

AEM489

E20 TorxÂŽ Socket (J-45816)

Removing and installing drive plate and flywheel bolts

LBIA0285E

Revision: December 2006

EM-12

2007 Sentra


NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING [MR20DE]

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

PFP:00003

A EBS00Z9G

EM

C

D

E

F

G

H

I

J

K

L

M

WBIA0822E

Revision: December 2006

EM-13

2007 Sentra


NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING [MR20DE] 1.

Piston pin noise

2.

Piston slap noise

3.

Main bearing noise

4.

Water pump noise

5.

Timing chain and tensioner noise

6.

Drive belt noise (stick/slipping)

7.

Tappet noise

8.

Camshaft bearing noise

9.

Connecting rod noise

A.

Rotational mechanism

B.

Water pump

C.

Timing chain

D.

Drive belt

E.

Crankshaft pulley

F.

A/C compressor

G.

Water pump

H.

Alternator

I.

Tension pulley

J.

Valve mechanism

K.

Valves

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

EBS00Z9H

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. Operating condition of engine Location of noise Top of engine Rocker cover Cylinder head

Type of noise

Front of engine Front cover

Front of engine

Reference page

After warmup

When starting

When idling

When racing

While driving

Ticking or clicking

C

A

A

B

Tappet noise

Valve clearance

EM-56

Rattle

C

A

A

B

C

Camshaft bearing noise

Camshaft journal oil clearance Camshaft runout

EM-50 EM-51

Piston pin noise

Piston to piston pin oil clearance Connecting rod bushing oil clearance

EM-92 EM-95

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

EM-96 EM-93 EM-93 EM-94

Slap or knock

Crankshaft pulley Cylinder block (Side of engine) Oil pan

Source of noise

Before warmup

A

B

B

Check item

Slap or rap

A

B

B

A

Piston slap noise

Knock

A

B

C

B

B

B

Connecting rod bearing noise

Connecting rod bushing oil clearance Connecting rod bearing oil clearance

EM-94 EM-98

Knock

A

B

A

B

C

Main bearing noise

Main bearing oil clearance Crankshaft runout

EM-98 EM-97

B

Timing chain and chain tensioner noise

Timing chain cracks and wear Timing chain tensioner operation

EM-43

C

Drive belt (Sticking or slipping)

Drive belt deflection

Tapping or ticking

A

A

B

B

Squeaking or fizzing

A

Creaking

A

B

A

B

A

B

Drive belt (Slipping)

Idler pulley bearing operation

Squall Creak

A

B

B

A

B

Water pump noise

Water pump operation

A: Closely related

B: Related

Revision: December 2006

B

C: Sometimes related

B

EM-15

CO-16

—: Not related

EM-14

2007 Sentra


DRIVE BELTS [MR20DE]

DRIVE BELTS Components

PFP:02117

A EBS00Z9I

EM

C

D PBIC3137J

1.

Alternator

4. A.

2.

Drive belt auto–tensioner

3.

Crankshaft pulley

A/C compressor (models with A/C) 5. Idler pulley (models without A/C)

Water pump

6.

Drive belt

Possible use range

Range when new drive belt is installed C.

B.

E

Indicator

Checking Drive Belts

F EBS00Z9J

WARNING: Be sure to perform this step when the engine is stopped. ● Make sure that the indicator (notch on fixed side) of drive belt auto-tensioner is within the possible use range (A). NOTE: ● Check the drive belt auto-tensioner indication when the engine is cold. ● When new drive belt is installed, the indicator (notch on fixed side) should be within the range (B). ● Visually check entire drive belt for wear, damage or cracks. ● If the indicator (notch on fixed side) is out of the possible use range or belt is damaged, replace drive belt.

G

Tension Adjustment

J

EBS00Z9K

H

I

Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.

Removal and Installation

EBS00Z9L

K

REMOVAL 1.

2.

3.

Hold the hexagonal part (A) of drive belt auto-tensioner (1) with a wrench securely. Then move the wrench handle in the direction of arrow (loosening direction of tensioner). CAUTION: Never place hand in a location where pinching may occur if the holding tool accidentally comes off. Insert a rod such as short-length screwdriver approximately 6 mm (0.24 in) in diameter into the hole (B) of the retaining boss to fix drive belt auto-tensioner. Remove drive belt.

L

M

PBIC3936E

Revision: December 2006

EM-15

2007 Sentra


DRIVE BELTS [MR20DE] INSTALLATION 1.

2.

3.

4. 5. 6.

Hold the hexagonal part (A) of drive belt auto-tensioner (1) with a box wrench securely. Then move the wrench handle in the direction of arrow (loosening direction of tensioner). CAUTION: Never place hand in a location where pinching may occur if the holding tool accidentally comes off. Insert a rod such as short-length screwdriver approximately 6 mm (0.24 in) in diameter into the hole (B) of retaining boss to fix drive belt auto-tensioner. Install drive belt. PBIC3936E CAUTION: ● Confirm drive belt is completely set to pulleys. ● Check for engine oil, working fluid and engine coolant are not adhered to drive belt and each pulley groove. Release drive belt auto-tensioner, and apply tension to drive belt. Turn crankshaft pulley clockwise several times to equalize tension between each pulley. Confirm tension of drive belt at indicator (notch on fixed side) is within the possible use range. Refer to EM-15, "Checking Drive Belts" .

Components

EBS00Z9M

PBIC4698E

1.

Front cover

2.

Drive belt auto–tensioner

4.

Bracket (models without A/C)

5.

Shaft (models without A/C)

3.

Removal and Installation of Drive Belt Auto-Tensioner

Idler pulley (models without A/C)

EBS00Z9N

REMOVAL 1. 2. 3.

Remove drive belt. Refer to EM-15, "Removal and Installation" . Release the fixed drive belt auto-tensioner pulley. Loosen bolt and remove drive belt auto-tensioner.

Revision: December 2006

EM-16

2007 Sentra


DRIVE BELTS [MR20DE]

4.

NOTE: Use TORX socket (size T50). Remove idler pulley and bracket (models without A/C).

A

INSTALLATION Installation is the reverse order of removal. CAUTION: â—? When installing drive belt auto-tensioner, be careful not to interfere with water pump pulley. â—? If there is damage greater than peeled paint, replace drive belt auto-tensioner and/or idler pulley.

EM

C

D

E

F

G

H

I

J

K

L

M

Revision: December 2006

EM-17

2007 Sentra


AIR CLEANER AND AIR DUCT [MR20DE]

AIR CLEANER AND AIR DUCT Components

PFP:16500 EBS00Z9O

WBIA0823E

1.

Air cleaner filter

2.

Mass air flow sensor

3.

O-ring

4.

Holder

5.

Air cleaner cover

6.

Air duct

7.

PCV hose

8.

Clip

9.

Air duct (Inlet)

10. Resonator

11. Air duct

12. Grommet

13. Air cleaner case

A.

B.

To electric throttle control actuator

Removal and Installation

To rocker cover EBS00Z9P

REMOVAL 1. 2. 3. 4. 5. 6. a. b. c. 7.

Remove the air duct (inlet). Remove the air cleaner filter from the air cleaner case. Refer to EM-19, "Changing Air Cleaner Filter" . Remove the air duct [between air duct (inlet) and air cleaner case] from the air cleaner case. Remove the PCV hose. Remove the air duct (between air cleaner case and electric throttle control actuator). ● Add marks as necessary for easier installation. Remove air cleaner case with the following procedure. Remove battery. Refer to SC-4, "BATTERY" . Disconnect harness connector from mass air flow sensor. Remove the air cleaner case. Remove the mass air flow sensor from the air cleaner case, if necessary. CAUTION: ● Handle it carefully and avoid impacts. ● Do not touch sensor part.

INSTALLATION Installation is in the reverse order of removal. Revision: December 2006

EM-18

2007 Sentra


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2007 NISSAN SENTRA Service Repair Manual  
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