Infiniti G35 Coupe 2004 User Manual

Download

Page 1

Edition: February 2002 Revision: April 2004

Publication No. SM3E-1V35U8

QUICK REFERENCE INDEX

GENERAL INFORMATION

B ENGINE

C TRANSMISSION/

TRANSAXLE

D DRIVELINE/AXLE

E SUSPENSION

F BRAKES

G STEERING H RESTRAINTS

I BODY

J AIR CONDITIONER

K ELECTRICAL

L MAINTENANCE M INDEX

General Information

Engine Mechanical

Engine Lubrication System

Engine Cooling System

Engine Control System

Fuel System

Exhaust System

ACC

Accelerator Control System

Clutch

Manual Transmission

Automatic Transmission

Propeller Shaft

RFD

Rear Final Drive

FAX

Front Axle

RAX

Rear Axle

FSU

Front Suspension

RSU

Rear Suspension

Road Wheels & Tires

Brake System

Parking Brake System

BRC

Brake Control System

Power Steering System

Seat Belts

SRS

Supplemental Restraint System (SRS)

Body, Lock & Security System

Glasses, Window System & Mirrors

Roof

Exterior & Interior

Instrument Panel

Seat

ATC

Automatic Air Conditioner

Starting & Charging System

Lighting System

Driver Information System

Wiper, Washer & Horn

BCS

Body Control System

LAN

LAN System

Audio, Visual,Navigation & Telephone System

ACS

Auto Cruise Control System

Power Supply, Ground & Circuit Elements

Maintenance

IDX

Alphabetical Index

A B C D

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 me ans, ele ctronic , me cha nic al, rec ordin g or oth erwise, wit hout th e prior written permission of Nissan Motor Company Ltd., Tokyo, Japan.

Page 2

FOREWORD

This manual contains maintenance and repair procedure for the 2003 INFINITI G35 Coupe.

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.

Page 3

PLEASE HELP MAKE THIS SERVICE MANUAL BETTER!

INFINITI

Your comments are important to INFINITI and will help us to improve our Service Manuals.

Use this form to report any issues or comments you may have regarding our Service Manuals.

Please print this form and type or write your comments below. Mail or fax to:

SERVICE MANUAL: Model: Year:

PUBLICATION NO. (Refer to Quick Reference Index ):

Please describe any Service Manual issues or problems in detail:

Page number(s)

Nissan North America, Inc. Technical Service Information 39001 Sunrise Drive, P.O. Box 9200 Farmington Hills, MI USA 48331 FAX: (248) 488-3910

Note: Please include a copy of each page, marked with your comments.

Are the trouble diagnosis procedures logical and easy to use? (circle your answer) YES NO

If no, what page number(s)?

Please describe the issue or problem in detail:

Is the organization of the manual clear and easy to follow? (circle your answer) YES NO

Please comment:

What information should be included in INFINITI Service Manuals to better support you in servicing or repairing customer vehicles?

Note: Please include a copy of each page, marked with your comments.

DATE: YOUR NAME: POSITION:

DEALER: DEALER NO.: ADDRESS:

CITY: STATE/PROV./COUNTRY: ZIP/POSTAL CODE:

Page 4

INCH TO METRIC CONVERSION TABLE

(Rounded-off for automotive use)

inches mm inches mm

.100 2.54 .610 15.49 .110 2.79 .620 15.75 .120 3.05 .630 16.00 .130 3.30 .640 16.26 .140 3.56 .650 16.51 .150 3.81 .660 16.76 .160 4.06 .670 17.02 .170 4.32 .680 17.27 .180 4.57 .690 17.53 .190 4.83 .700 17.78 .200 5.08 .710 18.03 .210 5.33 .720 18.29 .220 5.59 .730 18.54 .230 5.84 .740 18.80 .240 6.10 .750 19.05 .250 6.35 .760 19.30 .260 6.60 .770 19.56 .270 6.86 .780 19.81 .280 7.11 .790 20.07 .290 7.37 .800 20.32 .300 7.62 .810 20.57 .310 7.87 .820 20.83 .320 8.13 .830 21.08 .330 8.38 .840 21.34 .340 8.64 .850 21.59 .350 8.89 .860 21.84 .360 9.14 .870 22.10 .370 9.40 .880 22.35 .380 9.65 .890 22.61 .390 9.91 .900 22.86 .400 10.16 .910 23.11 .410 10.41 .920 23.37 .420 10.67 .930 23.62 .430 10.92 .940 23.88 .440 11.18 .950 24.13 .450 11.43 .960 24.38 .460 11.68 .970 24.64 .470 11.94 .980 24.89 .480 12.19 .990 25.15 .490 12.45 1.000 25.40 .500 12.70 2.000 50.80 .510 12.95 3.000 76.20 .520 13.21 4.000 101.60 .530 13.46 5.000 127.00 .540 13.72 6.000 152.40 .550 13.97 7.000 177.80 .560 14.22 8.000 203.20 .570 14.48 9.000 228.60 .580 14.73 10.000 254.00 .590 14.99 20.000 508.00 .600 15.24

METRIC TO INCH CONVERSION TABLE

(Rounded-off for automotive use)

mm inches mm inches

1 .0394 51 2.008 2 .079 52 2.047 3 .118 53 2.087 4 .157 54 2.126 5 .197 55 2.165 6 .236 56 2.205 7 .276 57 2.244 8 .315 58 2.283

9 .354 59 2.323 10 .394 60 2.362 11 .433 61 2.402 12 .472 62 2.441 13 .512 63 2.480 14 .551 64 2.520 15 .591 65 2.559 16 .630 66 2.598 17 .669 67 2.638 18 .709 68 2.677 19 .748 69 2.717 20 .787 70 2.756 21 .827 71 2.795 22 .866 72 2.835 23 .906 73 2.874 24 .945 74 2.913 25 .984 75 2.953 26 1.024 76 2.992 27 1.063 77 3.031 28 1.102 78 3.071 29 1.142 79 3.110 30 1.181 80 3.150 31 1.220 81 3.189 32 1.260 82 3.228 33 1.299 83 3.268 34 1.339 84 3.307 35 1.378 85 3.346 36 1.417 86 3.386 37 1.457 87 3.425 38 1.496 88 3.465 39 1.535 89 3.504 40 1.575 90 3.543 41 1.614 91 3.583 42 1.654 92 3.622 43 1.693 93 3.661 44 1.732 94 3.701 45 1.772 95 3.740 46 1.811 96 3.780 47 1.850 97 3.819 48 1.890 98 3.858 49 1.929 99 3.898 50 1.969 100 3.937

Page 5

QUICK REFERENCE CHART G35 COUPE

2003

QUICK REFERENCE CHART G35 COUPE PFP:00000

ENGINE TUNE-UP DATA (VQ35DE) ELS0003W

Engine model VQ35DE Firing order 1-2-3-4-5-6 Idle speed

M/T, A/T (In “N” posit ion) rpm Ignition timing

(BTDC at idle speed) CO% at idle 0.7 - 9.9 % and engine runs smoothly

Deflection adjustment Unit: mm (in)

Drive Belt

Limit After adjustment Limit After adjustment

Alternator, power steering oil pump and fan belt

Air conditioner compressor belt

Applied pushing force 98 (10, 22) — Radiater cap relief pressure

Cooling system leakage testing pressure

7 (0.28)

12 (0.47)

Standard Limit 59 (0.6, 9)

Used belt

(0.16 - 0. 20)

(0.35 - 0. 39)

kPa (kg/cm

4 - 5

9 - 10

, psi)

New belt

3.5 - 4.5

(0.138 - 0.177)

8 - 9

(0.31- 0.35)

Tension adjustment

294 (30, 66)

196 (20, 44)

78 - 98 (0.8 - 1.0, 11 - 14)

650±50

15°±5°

Used belt

730 - 818

(74.5 - 83.5,

164 - 184)

348 - 436

(35.5 - 44.5,

157(1.6, 23)

78 - 98)

Unit: N(kg, Ib)

New belt

838 - 926

(85.5 - 94. 5,

188 - 208)

470 - 559

(48 - 57,

106 - 126)

Compression pressure

Spark plug (Platinum-tipped type)

kPa (kg/cm Standard Minimum 981 (10.0, 142)/300 Standard type PLFR5A - 11 Hot type PLFR4A - 11 Cold type PLFR6A - 11 Gap (Nominal) mm(in) 1.1 ( 0.043 )

, psi)/rpm

1,275 (13.0, 185) /300

Page 6

QUICK REFERENCE CHART G35 COUPE

2003

FRONT WHEEL ALIGNMENT (Unl aden* )

Tire 17inch 18inch Camber Degree minute (Decimal degree) Minimum –1° 15′ ( – 1.25° )

Nominal – 0° 30′ ( – 0.50° ) Maximum 0° 15′ ( 0.25° ) Left and right difference 45′ ( 0.75° )

Caster Degree minute (Decimal degree) Minimum 7° 25′ ( 7.42° )7° 15′ ( 7.25° )

Nominal 8° 10′ ( 8.17° )8° 00′ ( 8.00° ) Maximum 8° 55′ ( 8.92° )8° 45′ ( 8.75° ) Left and right difference 45′ ( 0.75° )

Kingpin inclination Degree minute (Decimal degree) Minimum 4° 10′ ( 4.17° )

Nominal 4° 55′ ( 4.92° )

Maximum 5° 40′ ( 5.67° ) Total toe-in mm (in) Minimum 0 ( 0 ) Distance (A – B) Nominal 1 ( 0.04 )

Maximum 2 ( 0.08 ) Wheel turning angle (Full turn) Inside MInimum 35° 45′ ( 35.75° )

Degree minute (Decimal degree) Nominal 38° 45′ ( 38.75° )

Maximum 39° 45′ ( 39.75° )

Outside Degree minute (Decimal degree)

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

Nominal 30° 45′ ( 30.75° )

ELS0003X

REAR WHEEL ALIGNMENT (Unladen*) ELS0003Y

Camber Degree minute (Decimal degree) Minimum – 2° 00′ ( – 2.00° )

Nominal – 1° 30′ ( – 1. 50° )

Maximum – 1° 00′ ( – 1.00° ) Total-in mm (in) Minimum 0 ( 0 ) Distance ( A – B ) Nominal 2.8 ( 0.110 )

Maximum 5.6 ( 0.220 )

* : Fuel, engine coolant and oil full. Spare tire, jack, hand tools and mats in designa ted posi tion s.

BRAKE ELS0003Z

Unit : mm ( in )

Front brake Pad wear limit 2.0 ( 0.079 )

Rotor repair limit OPB27VA model : 28.4 ( 1.118 ), CLZ25VD model : 22.0 ( 0.866 )

Rear brake Pad wear limit 2.0 ( 0.079 )

Rotor repair limit OPB13VB model : 20.2 ( 0.795 ), AD14VE model :14.0 ( 0.551 ) Pedal free height M/T model : 154 - 164 ( 6.06 - 6.46 ), A/T model : 162 - 172 ( 6.38 - 6.77 ) Pedal depressed height* M/T model : More than 90 ( 3.54 ), A/T model : More than 95 ( 3.74 )

* : Under force of 490 N( 50 kg, 110 lb ) with engine running.

Page 7

QUICK REFERENCE CHART G35 COUPE

2003

REFILL CAPACITIES

UNIT Liter US measure Fuel tank 76 20 - 1/8 gal Coolant ( With reservoir tank ) 8.7 9 - 1/4 qt

Drain and refill

Engine

Dry engine (Overhaul) 5.4 5 - 3/4 qt

Transmission A/T 10.3 10 - 7/8 qt

M/T 2.9 3 - 1/8 qt Differential carrier 1.4 3 pt Power steering system 1.0 1 - 1/8 qt

Air conditioning system

Compressor oil 0.18 6.0 fl oz

Refrigerant 0.55 kg 1.21 lb

With oil filter change 4.7 5 qt Without oil filter change 4.4 4 - 5/8 qt

ELS00040

Page 8

ACCELERATOR CONTROL SYSTEM

B ENGINE

ACC

SECTION ACC

ACCELERATOR CONTROL SYSTEM

CONTENTS

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

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

SIONER” .................................................................. 2

Precautions for Battery Service ................................ 2

ACCELERATOR CONTROL SYSTEM .......................3

Removal and Installation .......................................... 3

REMOVAL .............................................................3

INSTALLATION .....................................................3

INSPECTION AFTER INSTALLATION .................. 3

SERVICE DATA AND SPECIFICATIONS (SDS) ........ 4

Tightening Torque .....................................................4

Revision; 2004 April 2003 G35 Coupe

ACC-1

Page 9

PRECAUTIONS

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

BELT PRE-TENSIONER”

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front sea t belt , helps t o redu ce th e r isk or s everi ty of injury to th e driv er an d front passenge r for c ertain types of collisi on . Thi s s ys te m in cludes seat belt swi tch inp uts an d du al stage front air bag modules . T he 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 ne ce ss ary t o se rvi ce th e sy stem saf e ly is i nclu de d in th e SR S and SB se ct i on of th is Ser vic e Manual.

WARNING:

● To avoid rendering the SRS inoperative, which could inc rease the ris k of personal inju ry 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, in cluding incorrect removal a nd installation of the SRS, can lead to per-

sonal injury caused by unintentional activation of the system. For rem ova l of Sp iral Ca ble an d Ai r Bag Module, see the SRS section.

● Do not use electrical test equipme nt on any circuit related to the SRS unle ss instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnes ses or harness connectors .

ABS00B48

Precautions for Battery Service ABS00B49

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interference between the window edge and the vehicle when the door is opened/closed. During normal operation, the window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic window function will not work with the battery disconnected.

Revision; 2004 April 2003 G35 Coupe

ACC-2

Page 10

ACCELERATOR CONTROL SYSTEM

ACCELERATOR CONTROL SYSTEM PFP:18005

Removal and Installation ABS002YI

ACC

SBIA0320E

1. Accelerator pedal assembly

REMOVAL

1. Disconnect accelerator pedal position sensor harness connector.

2. Loosen nuts, and remove accelerator pedal assembly.

CAUTION:

● Do not disassemble the accelerator pedal assembly. Do not remove the accelerator pedal posi-

tion sensor from the accelerator pedal assembly.

● Avoid impact from dropping etc. during handling.

● Be careful to keep the accelerator ped al as se mbl y away from wat er.

INSTALLATION

Install in the reverse order of removal.

INSPECTION AFTER INSTALLATION

● Check that the accelerator pedal moves smoothly within the whole operation range.

● Check that the accelerator pedal securely returns to the original position.

● For the elec trical inspecti on of the accele rator pedal po sition sensor, refer to EC-571, "DTC P 2138 APP

SENSOR" .

CAUTION:

When the harness co nnector of the accelerator pedal positio n sensor is disconnected, perform ″Accelerator Pedal Released Position Learning″. Refer to EC-46, "

Position Learning" .

Accelerator Pedal Released

Revision; 2004 April 2003 G35 Coupe

ACC-3

Page 11

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DAT A AND SPECIFICATIONS (SDS) PFP:00030 Tightening Torque ABS002YJ

Unit: N·m (kg-m, in-lb)

Accelerator pedal assembly 4.3 - 5.9 (0.44 - 0.60, 39 - 52)

Revision; 2004 April 2003 G35 Coupe

ACC-4

Page 12

AUTO CRUISE CONTROL SYSTEM

K ELECTRICAL

SECTION ACS

AUTO CRUISE CONTROL SYSTEM

CONTENTS

AUTOMA TIC SPEED CONTROL DEVICE (ASCD) ..... 2

Description ............................................................... 2

ACS

Revision; 2004 April 2003 G35 Coupe

ACS-1

Page 13

AUTOMATIC SPEED CONTROL DEVICE (ASCD)

AUTOMATIC SPEED CONTROL DEVICE (ASCD) PFP:18930 Description AKS003HV

Regarding the information for ASCD system, refer to EC-644, "AUTOMATIC SPEED CONTROL DEVICE

(ASCD)" .

Revision; 2004 April 2003 G35 Coupe

ACS-2

Page 14

AUTOMATIC TRANSMISSION

C TRANSMISSION/TRANSAXLE

SECTION AT

AUTOMATIC TRANSMISSION

CONTENTS

INDEX FOR DTC ........................................................ 5

Alphabetical Index .................................................... 5

DTC No. Index ......................................................... 6

PRECAUTIONS .......................................................... 7

Precautions for Supplemental Restraint Syste m (SRS) “AIR BAG” and “SEAT BELT PRE-TEN-

SIONER” .................................................................. 7

Precautions for Battery Service ................................ 7

Precautions for On Board Diagnostic (OBD) System

of A/T and Engine .................................................... 7

Precautions for TCM, A/T Assembly and Control

Valve Assembly Replacement .................................. 8

Precautions .............................................................. 9

Service Notice or Precautions ................................ 10

Wiring Diagrams and Trouble Diagnosis ................ 10

PREPARATION ................. .................... .....................11

Special Service Tools ..............................................11

Commercial Service Tools ...................................... 12

A/T FLUID ................................................................. 13

Changing A/T Fluid .. ...... ....... ...... ....... .................... 13

Checking A/T Fluid ................................................. 13

A/T CONTROL SYSTEM .......................................... 15

Cross-Sectional View ............................................. 15

Shift Mechanism ..................................................... 16

TCM Function ........... ...... ....... ...... ....... ...... ....... ....... 27

CAN Communication .............................................. 28

Input/Output Signal of TCM .................................... 30

Line Pressure Control ..................................... ....... 31

Shift Control ........................................................... 32

Lock-Up Control ..................................................... 33

Engine Brake Control ............................................. 35

Control Valve ............ ...... ....... ...... ........................... 35

ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 37

Introduction ............................................................ 37

OBD-II Function for A/T System ............................. 37

One or Two Trip Detection Logic of OBD-II ............ 37

OBD-II Diagnostic Trouble Code (DTC) ................. 37

Malfunction Indicator Lamp (MIL) ........................... 40

TROUBLE DIAGNOSIS ............................................ 41

DTC Inspection Priority Chart ................................ 41

Fail-Safe .................................................................41

How T o Perform Tr ouble Diagnosis For Quick and

Accurate Repair ......................................................43

A/T Electrical Parts Location ..................................48

Circuit Diagram .......................................................49

Inspections Before Trouble Diagnosi s ....................50

Check Before Engine is Started ..............................54

Check at Idle ...........................................................54

Cruise Test - Part 1 .................................................55

Cruise Test - Part 2 .................................................57

Cruise Test - Part 3 .................................................58

Vehicle Speed When Shifting Gears ......................59

Vehicle Speed When Performing and Releasing

Complete Lock-Up ..................................................59

Vehicle Speed When Performing and Releasing

Slip Lock-Up ...........................................................59

Symptom Chart .......................................................60

TCM Input/Output Signal Reference Values ...........83

CONSULT-II .... ............. ............. ............. ............. ....86

Diagnostic Procedure Without CONSULT-II ...........96

DTC U1000 CAN COMMUNICATION LINE ..............98

Description ............ ....... ...... ....... ...... ....... ...... ....... ....98

On Board Diagnosis Logic ......................................98

Possible Cause .......................................................98

DTC Confirmation Procedure .................................98

Wiring Diagram — AT — CAN ................................99

Diagnostic Procedure ...........................................100

DTC P0615 START SIGNAL CIRCUIT ................. ..101

Description ............ ....... ...... ....... ...... ....... ...... ....... ..101

On Board Diagnosis Logic ....................................101

Possible Cause .....................................................101

DTC Confirmation Procedure ...............................101

Wiring Diagram — AT — STSIG ..........................102

Diagnostic Procedure ...........................................103

DTC P0705 P ARK/NEUTRAL POSITION SWITCH .105

Description ............ ....... ...... ....... ...... ....... ...... ....... ..105

On Board Diagnosis Logic ....................................105

Possible Cause .....................................................105

DTC Confirmation Procedure ...............................105

Wiring Diagram — AT — PNP/SW .......................106

Revision; 2004 April 2003 G35 Coupe

AT-1

Page 15

Diagnostic Procedure ...........................................107

Component Inspection ..........................................109

DTC P0720 VEHICLE SPEED SENSOR A/T (REV-

OLUTION SENSOR) ...............................................110

Description .......... ......................... .........................110

On Board Diagnosis Logic ....................................110

Possible Cause .....................................................110

DTC Confirmation Procedure ...............................110

Wiring Diagram — AT — VSSA/T ..........................111

Diagnostic Procedure ...........................................112

DTC P0725 ENGINE SPEED SIGNAL ...................115

Description .......... ......................... .........................115

On Board Diagnosis Logic ....................................115

Possible Cause .....................................................115

DTC Confirmation Procedure ...............................115

Diagnostic Procedure ...........................................115

DTC P0740 TORQUE CONVERTER CLUTCH

SOLENOID VALVE .................................................117

Description .......... ......................... .........................117

CONSULT-II Reference Value ..............................117

On Board Diagnosis Logic ....................................117

Possible Cause .....................................................117

DTC Confirmation Procedure ...............................117

Wiring Diagram — AT — TCV ..............................118

Diagnostic Procedure ...........................................119

Component Inspection ..........................................121

DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) .122

Description .......... ......................... .........................122

On Board Diagnosis Logic ....................................122

Possible Cause .....................................................122

DTC Confirmation Procedure ...............................122

Wiring Diagram — AT — TCCSIG ........................123

Diagnostic Procedure ...........................................124

Component Inspection ..........................................126

DTC P0745 LINE PRE SSU RE SO LENOI D VAL VE .127

Description .......... ......................... .........................127

On Board Diagnosis Logic ....................................127

Possible Cause .....................................................127

DTC Confirmation Procedure ...............................127

Wiring Diagram — AT — LPSV ............................128

Diagnostic Procedure ...........................................129

Component Inspection ..........................................131

DTC P1701 TRANSMISSION CONTROL MODULE

(POWER SUPPLY) ..................................................132

Description .......... ......................... .........................132

On Board Diagnosis Logic ....................................132

Possible Cause .....................................................132

DTC Confirmation Procedure ...............................132

Wiring Diagram — AT — POWER ........................133

Diagnostic Procedure ...........................................135

Component Inspection ..........................................137

DTC P1702 TRANSMISSION CONTROL MODULE

(RAM) ......................................................................138

Description .......... ......................... .........................138

On Board Diagnosis Logic ....................................138

Possible Cause .....................................................138

DTC Confirmation Procedure ...............................138

Diagnostic Procedure ...........................................139

DTC P1703 TRANSMISSION CONTROL MODULE

(ROM) ......................................................................140

Description ............................................................140

On Board Diagnosis Logic ....................................140

Possible Cause .....................................................140

DTC Confirmation Procedure ................................140

Diagnostic Procedure ............................................141

DTC P1704 TRANSMISSION CONTROL MODULE

(EEPROM) ...............................................................142

Description ............................................................142

On Board Diagnosis Logic ....................................142

Possible Cause .....................................................142

DTC Confirmation Procedure ................................142

Diagnostic Procedure ............................................143

DTC P1705 THROTTLE POSITION SENSOR ........144

Description ............................................................144

On Board Diagnosis Logic ....................................144

Possible Cause .....................................................144

DTC Confirmation Procedure ................................144

Diagnostic Procedure ............................................144

DTC P1710 A/T FLUID TEMPERATURE SENSOR

CIRCUIT ..................................................................146

Description ............................................................146

CONSULT-II Reference Value ...............................146

On Board Diagnosis Logic ....................................146

Possible Cause .....................................................146

DTC Confirmation Procedure ................................146

Wiring Diagram — AT — FTS ...............................147

Diagnostic Procedure ............................................148

Component Inspection ..........................................151

DTC P1716 TURBINE REVOLUTION SENSOR ....152

Description ............................................................152

On Board Diagnosis Logic ....................................152

Possible Cause .....................................................152

DTC Confirmation Procedure ................................152

Wiring Diagram — AT — TRSA/T .........................153

Diagnostic Procedure ............................................154

DTC P1721 VEHICLE SPEED SENSOR MTR .......157

Description ............................................................157

On Board Diagnosis Logic ....................................157

Possible Cause .....................................................157

DTC Confirmation Procedure ................................157

Diagnostic Procedure ............................................157

DTC P1730 A/T INTERLOCK .................................159

Description ............................................................159

On Board Diagnosis Logic ....................................159

Possible Cause .....................................................159

DTC Confirmation Procedure ................................159

Wiring Diagram — AT — I/LOCK ..........................160

Judgement of A/T Interlock ...................................164

Diagnostic Procedure ............................................164

DTC P1731 A/T 1ST ENGINE BRAKING ...............166

Description ............................................................166

On Board Diagnosis Logic ....................................166

Possible Cause .....................................................166

DTC Confirmation Procedure ................................166

Wiring Diagram — AT — E/BRE ...........................167

Diagnostic Procedure ............................................168

DTC P1752 INPUT CLUTCH SOLENOID VALVE ..170

Description ............................................................170

Revision; 2004 April 2003 G35 Coupe

AT-2

Page 16

On Board Diagnosis Logic ................................... 170

Possible Cause .................................................... 170

DTC Confirmation Procedure ............................... 170

Wiring Diagram — AT — I/C ................................ 171

Diagnostic Procedure ........................................... 172

Component Inspection ......................................... 174

DTC P1754 INPUT CLUTCH SOLENOID VALVE

FUNCTION ........................ .......................... ............ 175

Description ........................................................... 175

On Board Diagnosis Logic ................................... 175

Possible Cause .................................................... 175

DTC Confirmation Procedure ............................... 175

Wiring Diagram — AT — I/CF .............................. 176

Diagnostic Procedure ........................................... 177

DTC P1757 FRONT BRAKE SOLENOID VALVE .. 179

Description ........................................................... 179

On Board Diagnosis Logic ................................... 179

Possible Cause .................................................... 179

DTC Confirmation Procedure ............................... 179

Wiring Diagram — AT — FR/B ............................. 180

Diagnostic Procedure ........................................... 181

Component Inspection ......................................... 183

DTC P1759 FRONT BRAKE SOLENOID VALVE

FUNCTION ........................ .......................... ............ 184

Description ........................................................... 184

On Board Diagnosis Logic ................................... 184

Possible Cause .................................................... 184

DTC Confirmation Procedure ............................... 184

Wiring Diagram — AT — FR/BF ........................... 185

Diagnostic Procedure ........................................... 186

DTC P1762 DIRECT CLUTCH SOLENOID VALVE . 189

Description ........................................................... 189

On Board Diagnosis Logic ................................... 189

Possible Cause .................................................... 189

DTC Confirmation Procedure ............................... 189

Wiring Diagram — AT — D/C ............................... 190

Diagnostic Procedure ........................................... 191

Component Inspection ......................................... 193

DTC P1764 DIRECT CLUTCH SOLENOID VALVE

FUNCTION ........................ .......................... ............ 194

Description ........................................................... 194

On Board Diagnosis Logic ................................... 194

Possible Cause .................................................... 194

DTC Confirmation Procedure ............................... 194

Wiring Diagram — AT — D/CF ............................. 195

Diagnostic Procedure ........................................... 196

DTC P1767 HIGH AND LOW REVERSE CLUTCH

SOLENOID VALVE ................................................. 198

Description ........................................................... 198

On Board Diagnosis Logic ................................... 198

Possible Cause .................................................... 198

DTC Confirmation Procedure ............................... 198

Wiring Diagram — AT — HLR/C .......................... 199

Diagnostic Procedure ........................................... 200

Component Inspection ......................................... 202

DTC P1769 HIGH AND LOW REVERSE CLUTCH

SOLENOID VALVE FUNCTION ............................. 203

Description ........................................................... 203

On Board Diagnosis Logic ................................... 203

Possible Cause .....................................................203

DTC Confirmation Procedure ...............................203

Wiring Diagram — AT — HLR/CF ........................204

Diagnostic Procedure ...........................................205

DTC P1772 LOW COAST BRAKE SOLENOID

VALVE .....................................................................208

Description ............ ....... ...... ....... ...... ....... ...... ....... ..208

On Board Diagnosis Logic ....................................208

Possible Cause .....................................................208

DTC Confirmation Procedure ...............................208

Wiring Diagram — AT — LC/B .............................209

Diagnostic Procedure ...........................................210

Component Inspection ..........................................212

DTC P1774 LOW COAST BRAKE SOLENOID

VALVE FUNCTION ..................................................213

Description ............ ....... ...... ....... ...... ....... ...... ....... ..213

On Board Diagnosis Logic ....................................213

Possible Cause .....................................................213

DTC Confirmation Procedure ...............................213

Wiring Diagram — AT — LC/BF ...........................214

Diagnostic Procedure ...........................................215

DTC P1815 MANUAL MODE SWITCH ..................217

Description ............ ....... ...... ....... ...... ....... ...... ....... ..217

CONSULT-II Reference Value in Data Monitor Mode

.217

On Board Diagnosis Logic ....................................217

Possible Cause .....................................................217

DTC Confirmation Procedure ...............................217

Wiring Diagram — AT — MMSW .........................218

Diagnostic Procedure ...........................................219

Component Inspection ..........................................220

Position Indicator Lamp ........................................220

DTC P1841 ATF PRESSURE SWITCH 1 ...............221

Description ............ ....... ...... ....... ...... ....... ...... ....... ..221

On Board Diagnosis Logic ....................................221

Possible Cause .....................................................221

DTC Confirmation Procedure ...............................221

Wiring Diagram — AT — FPSW1 .........................222

Diagnostic Procedure ...........................................223

DTC P1843 ATF PRESSURE SWITCH 3 ...............225

Description ............ ....... ...... ....... ...... ....... ...... ....... ..225

On Board Diagnosis Logic ....................................225

Possible Cause .....................................................225

DTC Confirmation Procedure ...............................225

Wiring Diagram — AT — FPSW3 .........................226

Diagnostic Procedure ...........................................227

DTC P1845 ATF PRESSURE SWITCH 5 ...............229

Description ............ ....... ...... ....... ...... ....... ...... ....... ..229

On Board Diagnosis Logic ....................................229

Possible Cause .....................................................229

DTC Confirmation Procedure ...............................229

Wiring Diagram — AT — FPSW5 .........................230

Diagnostic Procedure ...........................................231

DTC P1846 ATF PRESSURE SWITCH 6 ...............233

Description ............ ....... ...... ....... ...... ....... ...... ....... ..233

On Board Diagnosis Logic ....................................233

Possible Cause .....................................................233

DTC Confirmation Procedure ...............................233

Revision; 2004 April 2003 G35 Coupe

AT-3

Page 17

Wiring Diagram — AT — FPSW6 .........................234

Diagnostic Procedure ...........................................235

PARK/NEUTRAL POSITION, MANUAL MODE, BRAKE AND THROTTLE POSITION SWITCH CIR-

CUIT ........................................................................237

Diagnostic Procedure ...........................................237

TROUBLE DIAGNOSIS FOR SYMPTOMS ............239

Wiring Diagram — AT — NONDTC ......................239

A/T CHECK Indicator Lamp Does Not Come On .241 Engine Cannot Be Started In “P” or “N” Position ..243

In “P” Position, Vehicle Moves When Pushed ......243

In “N” Position, Vehicle Moves ..............................245

Large Shock (“N” to “D” Position) .........................246

Vehicle Does Not Creep Backward In “R” Position .249 Vehicle Does Not Creep Forward In “D” Position .251 Vehicle Cannot Be Started From D A/T Does Not Shift: D A/T Does Not Shift: D A/T Does Not Shift: D A/T Does Not Shift: D

1 → D2 ........................... .....257

2 → D3 ........................... .....259

3 → D4 ........................... .....262

4 → D5 ........................... .....264

1 .....................255

A/T Does Not Perform Lock-Up ............................266

A/T Does Not Hold Lock-Up Condition .................269

Lock-Up Is Not Released ......................................270

Engine Speed Does Not Return To Idle ................271

Cannot Be Changed to Manual Mode ..................272

A/T Does Not Shift: 5th Gear → 4th Gear ............273

A/T Does Not Shift: 4th Gear → 3rd Gear ............275

A/T Does Not Shift: 3rd Gear → 2nd Gear ...........277

A/T Does Not Shift: 2nd Gear → 1st Gear ............279

Vehicle Does Not Decelerate By Engine Brake ....281

SHIFT CONTROL SYSTEM ....................................283

Control Device Removal and Installation ..............283

Adjustment of A/T Position ...................................284

Checking of A/T Position ......................................284

A/T SHIFT LOCK SYSTEM ................................ .....286

Description .......... ......................... .........................286

Shift Lock System Electrical Parts Location .........286

Wiring Diagram — AT — SHIFT ...........................287

Diagnostic Procedure ...........................................288

KEY INTERLOCK CABLE ......................................291

Components .........................................................291

Removal ...............................................................292

Installation .............................. ...... ....... ..................293

ON-VEHICLE SERVICE ..........................................294

Control Valve Assembly ........................................294

Rear Oil Seal .........................................................300

Parking Components ............................................301

AIR BREATHER HOSE ...........................................307

Removal and Installation .......................................307

TRANSMISSION ASSEMBLY .................................308

Removal and Installation .......................................308

OVERHAUL ................................. ............................311

Components ....................... .................... ...............311

Oil Channel ...........................................................317

Locations of Adjusting Shims, Needle Bearings,

Thrust Washers and Snap Rings ..........................318

DISASSEMBLY .......................................................319

Disassembly ....................... ....... ............. ............. ..319

REPAIR FOR COMPONENT PARTS ......................334

Oil Pump ...............................................................334

Front Sun Gear, 3rd One-Way Clutch ...................336

Front Carrier, Input Clutch, Rear Internal Gear .....339

Mid Sun Gear, Rear Sun Gear, High and Low

Reverse Clutch Hub ..............................................344

High and Low Reverse Clutch ..............................349

Direct Clutch .........................................................350

ASSEMBLY .............................................................352

Assembly (1) .........................................................352

Adjustment ............................................................363

Assembly (2) .........................................................365

SERVICE DATA AND SPECIFICA TIONS (SDS) ....371

General Specifications ..........................................371

Vehicle Speed When Shifting Gears .....................371

Vehicle Speed When Performing and Releasing

Complete Lock-Up ................................................371

Vehicle Speed When Performing and Releasing

Slip Lock-Up ..........................................................371

Stall Speed ............................................................371

Line Pressure ........................................................372

Solenoid Valves ....................................................372

A/T Fluid Temperature Sensor ..............................372

Turbine Revolution Sensor ....................................372

Vehicle Speed Sensor A/T (Revolution Sensor) ...372

Reverse Brake ......................................................373

Total End Play .......................................................373

Revision; 2004 April 2003 G35 Coupe

AT-4

Page 18

INDEX FOR DTC

INDEX FOR DTC PFP:00024

Alphabetical Index ACS002AD

NOTE: If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000. Refer to

AT-98

DTC

Items

(CONSULT-II screen terms)

A/T 1ST E/BRAKING — P1731 AT-166 ATF PRES SW 1/CIRC — P1841 AT-221 ATF PRES SW 3/CIRC — P1843 AT-225 ATF PRES SW 5/CIRC — P1845 AT-229 ATF PRES SW 6/CIRC — P1846 AT-233 A/T INTERLOCK P1730 P1730 AT-159 A/T TCC S/V FNCTN P0744 P0744 AT-122 ATF TEMP SEN/CIRC P0710 P1710 AT-146 CAN COMM CIRCUIT U1000 U1000 AT-98 D/C SOLENOID/CIRC P1762 P1762 AT-189 D/C SOLENOID FNCTN P1764 P1764 AT-194 ENGINE SPEED SIG P0725 P0725 AT-115 FR/B SOLENOID/CIRC P1757 P1757 AT-179 FR/B SOLENOID FNCT P1759 P1759 AT-184 HLR/C SOL/CIRC P1767 P1767 AT-198 HLR/C SOL FNCTN P1769 P1769 AT-203 I/C SOLENOID/CIRC P1752 P1752 AT-170 I/C SOLENOID FNCTN P1754 P1754 AT-175 L/PRESS SOL/CIRC P0745 P0745 AT-127 LC/B SOLENOID/CIRC P1772 P1772 AT-208 LC/B SOLENOID FNCT P1774 P1774 AT-213 MANU MODE SW/CIR — P1815 AT-217 PNP SW/CIRC P0705 P0705 AT-105 STAR TER RELAY/CIRC — P0615 AT-101 TCC SOLENOID/CIRC P0740 P0740 AT-117 TCM·EEPROM — P1704 AT-142 TCM-POWER SUPPLY — P1701 AT-132 TCM·RAM — P1702 AT-138 TCM·ROM — P1703 AT-140 TP SEN/CIRC A/T P1705 P1705 AT-144 TURBINE REV S/CIRC P1716 P1716 AT-152 VEH SPD SE/CIR·MTR — P1721 AT-157 VEH SPD SEN/CIR AT P0720 P0720 AT-110

OBD-II Except OBD-II

CONSULT-II

GST*1

CONSULT -II

only “A/T”

Reference page

*1: These numbers are prescribed by SAE J2012.

Revision; 2004 April 2003 G35 Coupe

AT-5

Page 19

INDEX FOR DTC

DTC No. Index ACS002AE

NOTE: If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000. Refer to

AT-98

DTC

OBD-II Except OBD-II

CONSULT-II

GST*1

— P0615 STARTER RELAY/CIRC AT-101 P0705 P0705 PNP SW/CI RC AT-105 P0710 P1710 ATF TEMP SEN/CIRC AT-146 P0720 P0720 VEH SPD SEN/CIR AT AT-110 P0725 P0725 ENGINE SPEED SIG AT-115 P0740 P0740 TCC SOLENOID/CIRC AT-117 P0744 P0744 A/T TCC S/V FNCTN AT-122 P0745 P0745 L/PRESS SOL/CIRC AT-127

— P1701 TCM-POWER SUPPLY AT-132

— P1702 TCM·RAM AT-138

— P1703 TCM·ROM AT-140

— P1704 TCM·EEPROM AT-142 P1705 P1705 TP SEN/CIRC A/T AT-144 P1716 P1716 TURBINE REV S/CIRC AT-152

— P1721 VEH SPD SE/CIR·MTR AT-157 P1730 P1730 A/T INTERLOCK AT-159

— P1731 A/T 1ST E/BRAKING AT-166 P1752 P1752 I/C SOLENOID/CIRC AT-170 P1754 P1754 I/C SOLENOID FNCTN AT-175 P1757 P1757 FR/B SOLENOID/CIRC AT-179 P1759 P1759 FR/B SOLENOID FNCT AT-184 P1762 P1762 D/C SOLENOID/CIRC AT-189 P1764 P1764 D/C SOLENOID FNCTN AT-194 P1767 P1767 HLR/C SOL/CIRC AT-198 P1769 P1769 HLR/C SOL FNCTN AT-203 P1772 P1772 LC/B SOLENOID/CIRC AT-208 P1774 P1774 LC/B SOLENOID FNCT AT-213

— P1815 MANU MODE SW/CIRC AT-217

— P1841 ATF PRES SW 1/CIRC AT-221

— P1843 ATF PRES SW 3/CIRC AT-225

— P1845 ATF PRES SW 5/CIRC AT-229

— P1846 ATF PRES SW 6/CIRC AT-233

U1000 U1000 CAN COMM CIRCUIT AT-98

CONSULT -II

only “A/T”

(CONSUL T-II screen terms)

Items

Reference page

*1: These numbers are prescribed by SAE J2012.

Revision; 2004 April 2003 G35 Coupe

AT-6

Page 20

PRECAUTIONS

PRECAUTIONS PFP:00001

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

ACS002AF

The Supplemental Rest raint System such as “AIR BAG” and “SEAT BELT PRE-TENS IONER”, used along with a front seat belt, helps to redu ce th e risk or se verit y o f inju ry to the d river a nd fro nt passen ger fo r 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 increa se the risk of pe rsonal injury or dea th

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 maintenanc e, including incorrect removal and installation of the SRS, can lead to per-

sonal injury cause d by unintentional ac tiv atio n o f the s ys tem . For removal of Spiral Cable and Air Bag Module, see the SRS section.

● Do not use ele ctrical test equipmen t on any c ircuit rela ted to the SRS unle ss instructed to in th is

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Precautions for Battery Service ACS006HA

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interference between t h e wi nd ow ed ge an d th e v eh ic le wh en the do or is ope ne d/ cl o sed. Dur i n g nor ma l op era ti on, t he window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic window function will not work with the battery disconnected.

Precautions for On Board Diagnostic (OBD) System of A/T and Engine ACS002AG

The ECM has an on boa rd diagnos tic system. It w ill light up th e malfunct ion indicat or lamp (MIL) to warn the driver of a malfunction causing emission deterioration.

CAUTION:

● Be sure to turn the igni tion switch “OFF” and disconnec t the negative battery cable before any

repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will cause the MIL to light up.

● Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will

cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease, dirt, bent terminals, etc.)

● Be sure to route and secure the harnesses properly after work. Interference of the harness with a

bracket, etc. may cause the MIL to light up due to a short circuit.

● Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube

may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system, etc.

● Be sure to er ase the u nnecess ary malfunc tion inform ation (repairs co mpleted) from the TCM and

ECM before returning the vehicle to the cust om er.

Revision; 2004 April 2003 G35 Coupe

AT-7

Page 21

PRECAUTIONS

Precautions for TCM, A/T Assembly and Control Valve Assembly Replacement

ACS002AH

CAUTION:

● Check data (Unit ID) in TCM with data monitor of CONSULT-II before replacing A/T assembly or

control valve assembly.

● Check if new data (Unit ID) are entered correctly after replacing A/T assembly or control valve

assembly and erasing data in TCM.

● When replacing A/T assembly, control valve assembly or TCM, refer to the pattern table below and erase

the EEPROM in the TCM if necessary.

EEPROM ERASING PATTERNS

A/T assembly or control

valve assembly

Replaced Replaced Not re quire d

Not replaced Replaced Not required

Replaced Not replaced Required

METHOD FOR ERASING THE E EP ROM IN THE TCM

1. Connect CONSULT-II to data link connector.

2. Turn ignition switch “ON” . Confirm that CONSULT-II turn “ON”.

3. Move selector lever in “R” position.

4. Touch “START” on CONSULT-II.

5. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-II.

6. Fully press the accelerator pedal (8/8 throttle), and hold it in the fully open position. (This will set the closed throttle position signal to “OFF”.)

7. Touch “ERASE” on CONSULT-II, and then touch “YES”.

8. Wait 3 seconds and then release the accelerator pedal.

9. Turn ignition switch “OFF” position.

TCM Erasing EEPROM in TCM Remarks

Not required because the EEPROM in the TCM is in the default state.

Required because data has been written in the EEPROM in the TCM and because the TCM cannot write data from the ROM assembly in the transmission.

METHOD FOR WRITING DATA FROM THE ROM ASSEMBLY IN THE TRANSMISSION

In the following proc edure, the TCM read s data from the ROM assem bly and writes it to the EEPROM in the TCM.

1. With the EEPROM in the TCM erased.

2. Move selector lever in “P” position.

3. Turn ignition switch “ON” .

CHECK METHOD

● Normal: About 2 second s after the ignition switch “ON”, the A/T CHECK in dicator lamp lights up for 2

seconds.

● Abnormal: Even afte r th e ig nitio n sw itch “ON” , the A/T CHEC K indi cat or l amp d oes n ot l ight u p aft er 2 s ec-

onds or illuminates immediately.

Cope for abnormal

● Replace the control valve assembly.

● Replace the TCM.

Revision; 2004 April 2003 G35 Coupe

AT-8

Page 22

PRECAUTIONS

Precautions ACS002AI

● Before connecting o r disconnecting the TCM ha rness con-

nector, turn ignition switch “OFF” and disc onnect nega tive battery cable. Because battery voltage is applied to TCM even if ignition switch is turned “OFF”.

● When connec ting or disconnecting pin connectors i nto or

from TCM, take care not to dama ge pin terminals (bend or break). Make sure that the re are not any bends or breaks on TCM pin terminal, when connecting pin connectors.

● Before replacing TCM, perform TCM input/output signal

inspection and make sure wheth er TCM functions properly or not. AT-83, "

TCM INSPECTION TABLE".

SEF289H

SEF291H

MEF040DA

● After performing each TROUBLE DIAGNOSIS, perform

“DTC (Diagnostic Trouble Code) CONFIRMATION PROCEDURE”. If the repair is completed the DTC sh ould not be displaye d in the “DTC CONFIRMATION PROCEDURE”.

SEF217U

● Always use the specified brand of A/T fluid. Refer to MA-9, "Fluids and Lubricants" .

● Use paper rags not cloth rags during work.

● After replacing the A/T f luid, dispos e of the waste oil using the methods prescribed by law, ordina nce, etc.

● Before proce eding wi th disassem bly, thoroughly clean the outside of th e transax le. It is im portant to pre-

vent the internal parts from becoming contaminated by dirt or other foreign matter.

● Disassembly should be done in a clean work area.

Revision; 2004 April 2003 G35 Coupe

AT-9

Page 23

PRECAUTIONS

● Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere

with the operation of the transax le .

● Place disassembled parts in order for easier and proper assembly.

● All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or

reassembly.

● Gaskets, seals and O-rings should be replaced any time the transaxle is disassembled.

● It is very important to perform functional tests whenever they are indicated.

● The valve bo dy contains prec is io n p a r t s a nd req ui res ex tr e me ca r e when parts ar e r em ov ed an d s er v ic ed.

Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent springs and small parts from becoming scattered or lost.

● Properly installed valves , sle ev e s, pl ug s, etc . w ill slid e alo ng bore s in va lv e body under their own weight.

● Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings

and seals, or hold bearings and washers in place during assembly. Do not use grease.

● Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.

● After overh a ul, refill the transaxle with new ATF.

● When the A/T drai n plug is remo ved, on ly som e of the fluid i s draine d. Old A/T fluid will rem ain in t orque

converter and ATF cooling system. Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer to AT-13, "

Changing A/T Fluid" , AT-13, "Checking A/T Fluid" .

Service Notice or Precaution s ACS002AJ

OBD-II SELF-DIAGNOSIS

● A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through

the blinking pattern of the A/T CHECK ind icator or the malfunction indi ca to r lam p (MI L). Ref er to th e table on AT-87, "

● The self-diagnos ti c re su lts ind ic at ed by th e M IL ar e a uto m ati ca ll y s t ore d in bo th th e EC M an d TC M me m -

ories.

Always perform the procedure on AT-38, " unnecessary blinking of the MIL.

For details of OBD-II, refer to EC-50, "

● Certain systems and comp onents, especially those rel ated to OBD, may use the new style sli de-

locking type harness connector. For description and how to disconnect, refer to PG-63, "

NESS CONNECTOR" .

Self-Diagnostic Result Test Mode" for the indicator used to display each self-diagnostic result.

HOW TO ERASE DTC" to complete the repair and avoid

ON BOARD DIAGNOSTIC (OBD) SYSTEM" .

HAR-

Wiring Diagrams and Trouble Diagnosis ACS002AK

When you read wiring diagrams, refer to the following:

● GI-15, "How to Read Wiring Diagrams".

● PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit.

When you perform trouble diagnosis, refer to the following:

● GI-11, "How to Follow Trouble Diagnoses".

● GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident".

Revision; 2004 April 2003 G35 Coupe

AT-10

Page 24

PREPARATION

PREPARATION PFP:00002

Special Service Tools ACS002AL

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

Tool number (Kent-Moore No.) Tool nam e

Description

ST2505S001 (J-34301-C) Oil pressure gauge set 1 ST25051001 (—) Oil pressure gauge 2 ST25052000 (—) Hose 3 ST25053000 (—) Joint pipe 4 ST25054000 (—) Adapter 5 ST25055000 (—) Adapter

KV31103600 (J-45674) Joint pipe adapter (With ST25054000)

ST33400001 (J-26082) Drift a: 60 mm (2.36 in) dia. b: 47 mm (1.85 in) dia.

ZZA0600D

ZZA1227D

Measuring line pressure

● Installing rear oil seal

● Installing oil pump housing oil seal

NT086

KV31102400 (J-34285 and J-34285-87) Clutch spring compressor a: 320 mm (12.60 in) b: 174 mm (6.85 in)

NT423

ST25850000 (J-25721-A) Sliding h a mmer a: 179 mm (7.05 in) b: 70 mm (2.76 in) c: 40 mm (1.57 in) d: M12X1.75P

Revision; 2004 April 2003 G35 Coupe

AT-11

NT422

Installing reverse brake return spring retainer

Remove oil pump assembly

Page 25

PREPARATION

Commercial Service Tools ACS002AM

Tool nam e Description Power tool Loosening bolts and nuts

PBIC0190E

Drift a: 22mm (0.87 in)

NT083

Installing manual shaft oil seal

Revision; 2004 April 2003 G35 Coupe

AT-12

Page 26

A/T FLUID

A/T FLUID PFP:KLE40

Changing A/T Fluid ACS004LA

1. Warm up A/T fluid.

2. Stop engine.

3. Remove the tig htening bolt for A/T fluid level gauge.

4. Drain A/T fluid from drain plug and refill with new A/T f luid. Always refill same volume with drained fluid.

● To replace the A/T fluid, pour in new fluid at the charging pipe with the engine idling and at the same

time drain the old fluid from the radiator cooler hose return side.

● When the color o f the fluid comi ng out is about th e s a me a s the c ol or of the new flui d, the re placement

is complete. The amou nt of new t ransm issi on fl uid to us e shou ld be 30 to 50% o f the st ipul ated am ount .

A/T fluid: Genuine Nissan Matic J ATF Fluid capacity: 10.3 (10-7/8 US qt, 9-1/8 lmp qt)

CAUTION:

● Use only Genuine Nissan Matic J ATF. Do not mix with other fluid.

● Using automatic transmission fluid other than Genuine Nissan Matic J ATF will cause deteriora-

tion in driveability and autom ati c tran sm is sion durability, and may damage the automatic transmission, which is not covered by the warranty.

● When filling A/T fluid, take care not to scatter heat generating parts such as exhaust.

Drain pl ug:

: 34 N·m (3.5 kg-m, 25 ft-lb)

5. Run engine at idle speed for 5 minutes.

6. Check fluid level and condition. Refer to AT-1 3 , "

Checking A/T Fluid" . If fluid is still dirty, repeat step 2.

through 5.

7. Install the removed A/T fluid level gauge in the fluid charging pipe.

Level gauge bolt:

: 5.1 N·m (0.52 kg-m, 45 in-lb)

Checking A/T Fluid ACS004LB

1. Warm up engine.

2. Check for fluid le akage.

3. Remove the tig htening bolt for A/T fluid level gauge.

4. Before driving, fluid level can be checked at fluid temperatures of 30 to 50°C (86 to 122°F) using “COLD” range on A/T fluid level gauge as follows.

a. Park vehicle on level surface and set parking brake. b. Start engine and move selector lever through e ach gear position. Leave selector lever in “P” position. c. Check fluid level with engine idling. d. Remove A/T fluid level gaug e and wipe clean with lint-free paper.

CAUTION:

When wiping away the fluid level gauge, always use lint-free paper, not a cloth one.

e. Re-insert A/T fluid level gauge into charging pipe as far as it will go .

CAUTION:

To check fluid level, insert the A/T fluid leve l gauge until the ca p contacts the end of the charging pipe, with the gauge reversed from the normal attachment conditions.

f. Remove A/T fluid level gauge and note reading. If reading is at low side of range, add fluid to the charging

pipe.

CAUTION:

Do not overfill.

5. Drive vehicle f or approximately 5 minutes in urban areas.

Revision; 2004 April 2003 G35 Coupe

AT-13

Page 27

A/T FLUID

6. Make the fluid temperature approximat ely 65°C (149°F).

NOTE: Fluid level will be g r ea tly affe cte d by te mpe ratu re as shown in figure. The refo re, be ce rtain to pe rform operation while checking data with CONSULT-II.

SLIA0016E

a. Connect CONSULT-II to data link connector. b. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II. c. Read out the value of “ATF TEMP 1”.

7. Re-check fluid level at fluid te mperatures of approximatel y 65°C (149°F) using “HOT” range on A/T fluid level gauge.

CAUTION:

● When wiping away the fluid level gauge, always use lint-free paper, not a cloth one.

● To check fluid level, insert the A/T fluid level gauge until

the cap contacts the end of the ch arging pipe, with the gauge reversed from the normal attachment conditions as shown.

8. Check fluid condition.

● If fluid is very dark or has some burned smell, refer to check

operation of A /T. Flush cooling system after repair of A/T.

● If A/T fluid co ntains frictional ma terial (clutche s, bands, etc.),

replace radiat or and flush cooler line using cl eaning solvent and compressed air after repair of A/T.Refer to CO-12, "

ATOR" .

RADI-

SCIA2899E

9. Install the removed A/T fluid level gauge in the fluid charging pipe.

Level gauge bolt:

: 5.1 N·m (0.52 kg-m, 45 in-lb)

Revision; 2004 April 2003 G35 Coupe

AT-14

Page 28

A/T CONTROL SYSTEM

A/T CONTROL SYSTEM PFP:31036

Cross-Sectional View ACS002AP

1. Front planetary gear 2. M id planetary gear 3. Rear planetary gear

4. Direct clutch 5. High and low reverse clutch 6. Reverse brake

7. Drum support 8. Forward brake 9. Low coast brake

10. Input shaft 11. Torque converter 12. Oil pump

13. Front brake 14. 3rd one-way clutch 15. Input clutch

16. 1st one-way clutch 17. Control valve with TCM 18. Forward one- w ay clut ch

19. Rear extension 20. Output shaft

SCIA5262E

Revision; 2004 April 2003 G35 Coupe

AT-15

Page 29

A/T CONTROL SYSTEM

Shift Mechanism ACS002AQ

The automatic tra nsmission uses compact dual pl anetary gear systems to improve power-transmission efficiency, simplify construction and reduce w eight. It also empl oys an o ptimum shi ft control and supe r wide ge ar ratios. They imp rove starti ng perform ance and acceleration during medium and high-speed operation.

CONSTRUCTION

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse cl utch 5. R everse brake 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutch 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front interna l gea r 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output sha ft

22. Parking gear 23. Parking pawl

FUNCTION OF CLUTCH AND BRAKE

Name of the Part Abbreviation Function

Front brake (1) Fr/B Fastens the front sun gear (11).

Input clutch (2) I/C

Direct clutch (3) D/C Connects the rear carrier (15) and the rear sun gear (16). High and low reverse clutch (4) HLR/C Connects the mid sun gear (17) and the rear sun gear (16). Reverse brake (5) R/B Fa st ens t he rea r carrier (15) . Forward brake (6) F/B Fastens t he mid sun gear (17). Low coast brake (7) LC/B Fastens the mid sun gear (17).

1st one-way clutch (8) 1st/O.C

Forward one-way clutch (9) F/O.C

3rd one-way clutch (10) 3rd/O.C

Connects the input shaft (12), the front internal gear (14) and the mid internal gear (13).

Allows the rear sun gear (16) to turn freely forward relative to the mid sun gear (17) but fastens it for reverse rotation.

Allows the mid sun gear (17) to turn freely in the forward direction but fastens it for reverse rotat i o n.

Allows the front sun gear (11) to turn freely in the forward direction but fastens it for reverse rotat ion.

PCIA0002J

Revision; 2004 April 2003 G35 Coupe

AT-16

Page 30

CLUTCH AND BAND CHART

A/T CONTROL SYSTEM

SCIA4755E

Revision; 2004 April 2003 G35 Coupe

AT-17

Page 31

A/T CONTROL SYSTEM

POWER TRANSMISSION “N” Positi on

Since both the forward brake and the reverse brake are released, torque from the input shaft drive is not transmitted to the output shaft.

“P” Position

● The same as for the “N” position, both the forward brake and the reverse brake are released, so torque

from the input shaft drive is not transmitted to the output shaft.

● The parking pawl linked wi th th e s el ec tor lever meshes with the parkin g g ea r an d fa stens the output sh aft

mechanically.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Rever se bra ke 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutch 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

PCIA0003J

Revision; 2004 April 2003 G35 Coupe

AT-18

Page 32

A/T CONTROL SYSTEM

“D1 ” Position

● The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.

● The first one-way clutch regulates reverse rotation of the rear sun gear.

● The third one-way clutch regulates reverse r otation of the front sun gear.

● During deceleration, the mid sun gear turns forward, so the forward one-way clutch idles and the engine

brake is not act ivated.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Reverse brake 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutc h 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

SCIA1512E

Revision; 2004 April 2003 G35 Coupe

AT-19

Page 33

A/T CONTROL SYSTEM

“M1” Position

● The front brake fastens the front sun gear.

● The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.

● High and low rever se clutch connects the rear sun gear and the mid sun gear.

● The low coast brake fastens the mid sun gear.

● During deceleration, the low coast brake regulates forward rotation of the mid sun gear and the engine

brake functions.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Rever se bra ke 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutch 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

SCIA1513E

Revision; 2004 April 2003 G35 Coupe

AT-20

Page 34

A/T CONTROL SYSTEM

“D2 ” Position

● The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.

● The third one-way clutch regulates reverse r otation of the front sun gear.

● The direct clutch is coupled, and the rear carrier and rear sun gear are connected.

● During deceleration, the mid sun gear turns forward, so the forward one-way clutch idles and engine

brake is not act ivated.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Reverse brake 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutc h 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

SCIA1514E

Revision; 2004 April 2003 G35 Coupe

AT-21

Page 35

A/T CONTROL SYSTEM

“M2” Position

● The front brake fastens the front sun gear.

● The forward brake and the forward one-way clutch regulate reverse rotation of the mid sun gear.

● The direct clutch is coupled, and the rear carrier and rear sun gear are connected.

● The low coast brake fastens the mid sun gear.

● During deceleration, the low coast brake regulates forward rotation of the mid sun gear and the engine

brake functions.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Rever se bra ke 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutch 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

SCIA1515E

Revision; 2004 April 2003 G35 Coupe

AT-22

Page 36

A/T CONTROL SYSTEM

“D3 ” and “M3” Position

● The front brake fastens the fro n t sun gear.

● The direct clutch is coupled, and the rear carrier and rear sun gear are connected.

● The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Reverse brake 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutc h 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

SCIA1516E

Revision; 2004 April 2003 G35 Coupe

AT-23

Page 37

A/T CONTROL SYSTEM

“D4 ” and “M4” Position

● The direct clutch is coupled, and the rear carrier and rear sun gear are connected.

● The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.

● The input clu tch is coupled, and the front internal gear and mid internal gear are connected.

● The drive power is conveyed to the fron t internal gear, mid internal gear, and rear carrier and t he three

planetary gears rotate forward as one unit.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Rever se bra ke 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutch 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

SCIA1517E

Revision; 2004 April 2003 G35 Coupe

AT-24

Page 38

A/T CONTROL SYSTEM

“D5 ” and “M5” Position

● The front brake fastens the fro n t sun gear.

● The input clutch is coupled, and the front internal gear and mid internal gear are connected.

● The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Reverse brake 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutc h 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

SCIA1518E

Revision; 2004 April 2003 G35 Coupe

AT-25

Page 39

A/T CONTROL SYSTEM

“R” Positi on

● The front brake fastens the front sun gear.

● The high and low reverse clutch is coupled, and the mid sun gear and rear sun gear are connected.

● The reverse brake fastens the rear carrier.

1. Front brake 2. Input clutch 3. Direct clutch

4. High and low reverse clutch 5. Rever se bra ke 6. Forward brake

7. Low coast brake 8. 1st one-way clutch 9. Forward one-way clutch

10. 3rd one-way clutch 11. Front sun gear 12. Input shaft

13. Mid internal gear 14. Front internal gear 15. Rear carrier

16. Rear sun gear 17. Mid sun gear 18. Front carrier

19. Mid carrier 20. Rear internal gear 21. Output shaft

22. Parking gear 23. Parking pawl

SCIA1519E

Revision; 2004 April 2003 G35 Coupe

AT-26

Page 40

A/T CONTROL SYSTEM

TCM Function ACS002AR

The function of the TCM is to:

● Receive input signals sent from various switches and sensors.

● Determine required line pressure, shifting point, lock-up operation, and engine brake operation.

● Send required output signals to the respective solenoids.

CONTROL SYSTEM OUTLINE

The automatic tra ns mi ss io n senses vehicle op era tin g conditions through various se ns o r s o r signals. It al way s controls the optimum shift position and reduces shifting and lock-up shocks.

SENSORS

PNP switch Throttle position sensor Accelerator pedal position sensor Closed throttle position signal Wide-open throttle position signal Engine speed signal A/T fluid temperature sensor Revolution sensor Vehicle speed sensor Manual mode switch Stop lamp switch signal Turbine revolution sensor ATF pressure SW

Shift control Line pressure control Lock-up control Engine brake control Timing control Fail-safe control Self-diagnosis CONSULT-II communication line Duet-EA control CAN system

TCM

ACTUATORS

Input clutch solenoid valve Direct clutch solenoid valve Front brake solenoid valve High and low reverse clutch solenoid valve Low coast brake solenoid valve T orque converter clutch solenoid valve Line pressure solenoid valve A/T CHECK indicator lamp Starter relay Back-up lamp relay

CONTROL SYSTEM DIAGRAM

SCIA5325E

Revision; 2004 April 2003 G35 Coupe

AT-27

Page 41

A/T CONTROL SYSTEM

CAN Communication ACS002AS

SYSTEM DESCRIPTION

CAN (Controller Area N et w ork ) is a s eri al co mm u nic a tio n l ine for real time applic ati on . It is an on-vehicl e m ul tiplex communi catio n lin e with hi gh da ta co mmun icat ion spe ed and exce llent error d etec tion ab ili ty. Many electronic control u nits are eq uipped o nto a ve hicl e, and ea ch control unit sh ares info rmation and l inks with other control units duri ng operation (not independent). In CAN communicat ion, control units ar e connected wi th 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

CAN COMMUNICATION UNIT System diagram

SKIA1880E

Input/output signal chart

T: Transmit R: Receive

Signals ECM TCM

Engine speed signal T R R R Engine coolant temperature signa l T R R Accelerator pedal position signal T R R Closed throttle position signal T R Wide open throttle position signal T R Battery voltage signal T R Stop lamp switch signal R T Fuel consumption monitor signa l T R A/T self-diagnosis signal R T A/T CHECK indicator lamp signal T R A/T position indicator signal T R R ABS operation signal R T A/T shift schedule change demand

signal Air conditioner switch signal R T A/C compressor request signal T R A/C compressor feedback si gnal T R Blower fan motor switch signal R T Cooling fan motor operation signal R T Position lights request signal R T R Low beam request signal T R Low beam status signal R T High beam request signal R T R High beam status signal R T

Combination meter

BCM

Steering

angle

sensor

VDC/TCS/

ABS con-

trol unit

IPDM E/R

Revision; 2004 April 2003 G35 Coupe

AT-28

Page 42

A/T CONTROL SYSTEM

Signals ECM TCM

Front fog lights request signal T R

Vehicle speed signal

Sleep request 1 signal R T Sleep request 2 signal T R Wake up request 1 signal R T R Wake up request 2 signal R T R Door switch signal (without naviga-

tion system) Door switch signal (with navigation

system) Turn indicator signal R T Seat belt buckle switch signal T R Oil pressure switch signal R T Buzzer output signal R T Trunk switch signal R T ASCD main switch signal T R ASCD cruise signal T R Output shaft revolution signal R T Front wiper request signal T R Front wiper stop position signal R T Rear window defogger switch signal T R Rear window defogger control sig-

nal Manual mode signal R T Not manual mode signal R T Manual mode shift up signal R T Manual mode shift down signal R T Manual mode indicator signal T R Hood switch signal R T Theft warning horn request signal T R Horn chirp signal R T Steering angle sensor signal TR

RRT R

R T

Combination meter

RT R

BCM

Steering

angle

sensor

VDC/TCS/

ABS con-

trol unit

IPDM E/R

Revision; 2004 April 2003 G35 Coupe

AT-29

Page 43

A/T CONTROL SYSTEM

Input/Output Signal of TCM ACS002AT

Line

Control item

Accelerator pedal position signal Vehicle speed sensor A/T

(revolution sensor) Vehicle speed sensor MTR Closed throttle position signal

Wide-open throttle position sig-

(*5)

nal Turbine revolution sensor 1 X X X X Turbine revolution sensor 2

Input

(for 4th speed only) Engine speed signals

PNP switch XXXXXX(*4) X Stop lamp switch signal

A/T fluid temperature sensors 1, 2 X X X X X X

Cruise signal

ASCD

TCM power supply voltage signal X XXXXXX Direct clutch solenoid

(ATF pressure switch 5) Input clutch solenoid

(ATF pressure switch 3) High and low reverse clutch sole-

noid (ATF pressure switch 6)

Out-

Front brake solenoid

put

(ATF pressure switch 1) Low coast brake solenoid

(ATF pressure switch 2) Line pressure solenoid XXXXXXX TCC solenoid X X X

Self-diagnostics table

*1: Spare for vehicle speed sensor·A/T (revolution sensor) *2: Spare for accelerator pedal position signal *3: If these input and output signals are different, the TCM triggers the fail-safe function. *4: Used as a condition for starting self-diagnostics; if self-dia gnostics are not started, it is judged that there is some kind of error. *5: Input by CAN communications. *6: Output by CAN communications.

Overdrive release signal

(*1) (*5)

(*5)

(*6)

(*5)

pressure

control

(*5)

XXXXXXX

XXXX XX

XXXX X

(*2) X (*2) X (*2) X (*4) X

(*2) X (*2) X (*4) X

XX XX

Vehicle

speed

control

XX(*4) X

XXXX

XXX

XX XX

XX XXX

Shift

control

Lock-up

control

Engine

brake

control

Fail-safe

function

(*3)

Self-diag-

nostics

function

Revision; 2004 April 2003 G35 Coupe

AT-30

Page 44

A/T CONTROL SYSTEM

Line Pressure Control ACS002AU

● When an input torq ue signal equivalent to the engine drive forc e is sent from the ECM to the TCM , the

TCM controls the line pressure solenoid.

● This line pressure solenoid controls the pressure regulator valve as the signal pressure and adjusts the

pressure of the operating oil discharged from the oil pump to the line pressure most appropriate to the driving state.

PCIA0007E

LINE PRESSURE CONTROL IS BASED ON THE TCM LINE PRESSURE CHARACTERISTIC PATTERN

● The TCM has stored in memory a number of patterns for the optimum line pressure characteristic for the

driving state.

● In order to obtain the most approp riate line pressure c haracteristic to me et the current driv ing state, the

TCM controls the line pressure solenoid c urrent valve and thus controls the line pressure.

Normal Control

Each clutch is adjusted to the necessary pressure to match the engine drive force.

PCIA0008E

Back-up Control (Engine brake)

When the select operation is ex ecuted during driving and th e transmission is shifted down, the line pressure is set according to the vehicle speed.

PCIA0009E

Revision; 2004 April 2003 G35 Coupe

AT-31

Page 45

A/T CONTROL SYSTEM

During Shift Change

The necessary and adequate line pressure for shift change is set. For this reason, line pressure pattern setting corresponds to input torque and gearshift selection. Also, line pressure characteristic is according to engine speed, du ring engine brake operation.

PCIA0010E

At Low Fluid Temperature

When the A/T fluid temperature drops below the prescribed temperature, in order to speed up the ac ti on of eac h fric tio n el em en t, th e lin e pressure is set higher than the normal line pressure characteristic.

PCIA0011E

Shift Control ACS002AV

The clutch pre ssure control solenoid is c ontrolled by the signals f rom the switches and sensors . Thus, the clutch pressu re is adjusted to be appropriate to th e engine load state and vehicle dri ving state. It becomes possible to fi n el y cont r ol t he c lut ch hy dra ul i c p res su re wi t h hi gh p rec is io n an d a smo ot h er s hi ft ch an ge cha r acteristic is attained.

PCIA0012E

SHIFT CHANGE

The clutch is controlled with the optimum timing and oil pressure by the engine speed, engine torque information, etc.

Revision; 2004 April 2003 G35 Coupe

AT-32

Page 46

Shift Change System Diagram

A/T CONTROL SYSTEM

PCIA0013E

*1: Full phase real-time feedback control monitors movement of gear ratio at gear change, and controls oil pressure at real-time to achieve the best gear ratio.

Lock-Up Control ACS002AW

The torque convert er clutch piston in the torque conve rter is engaged to eliminate torqu e converter slip to increase power transmission efficiency. The torque converter clutch control v alve operation is control led by the torque converter clutch s olenoid valve, which is controll ed by a signal from TCM , and the torqu e converter clut ch control valve e ngages or relea ses the torque converter clutch piston.

Lock-up Operation Condition Table

Selector lever D position, M5 position M4 position Gear position 5 4 4 Lock-up × – × Slip lock-up ××–

TORQUE CONVERTER CLUTCH CONTROL VALVE CONTROL Lock-Up Control System Diagram

PCIA0014E

Lock-Up Released

● In the lock-up rel e as ed st at e, the t or que c on ve r ter cl utch co nt rol va lv e i s se t in to t he unlo cke d s tate by the

torque converter clutch solenoid and the lock-up apply pressure is drained. In this way, the torque converter clutch piston is not coupled.

Revision; 2004 April 2003 G35 Coupe

AT-33

Page 47

A/T CONTROL SYSTEM

Lock-Up Applie d

● In the lock-up applied state, the torque converter clutch control valve is set into the locked state by the

torque conver ter clutch sole noid and lock-up apply pressure is generated. In this way, the torque converter clutch piston is pressed and coupled.

SMOOTH LOCK-UP CONTROL

When shifting from the lock-up released state to the lock-up applied state, the current output to the torque converter clutch sol enoid is controlled w ith the TCM. In thi s way, when shifting to the lock-up applie d state, the torque converter clutch is temporarily set to the half-clutched state to reduce the shock.

Half-Clutched State

● The current output from the TCM to th e t orq ue co nv e r ter cl utc h solenoid is varie d to ste adily increase t he

torque conver ter clutch solenoid pressure. In this way, the lock-up apply pressure gradually rises and while the torque converter clutch piston is put into half-clutch ed status, the torque conv erter clutc h piston op erating pres sure is inc reased and the coupling is completed smoothly.

Slip Lock-Up Co ntrol

● In the slip reg ion, the t orque conve rter c lutch sol enoid c urren t is cont rolled with the T CM to pu t it i nto t he

half-clutched state. This absorbs the engine torque fluctuation and lock-up operates from low speed. This raises the fuel efficiency for 4th and 5th gear at both low speed and when the accelerator has a low degree of opening.

Revision; 2004 April 2003 G35 Coupe

AT-34

Page 48

A/T CONTROL SYSTEM

Engine Brake Control ACS002AX

● The forward one-way clutch transmits the drive force from the engine to the rear wheels. But the reverse

drive from the rear wheels i s not transmitted to the engine because the one-way clut ch is idling. Therefore, the low coast brake solenoid is operated to prevent the forward one-way clutch from idling and the engine brake is operated in the same manner as conventionally.

PCIA0015E

● The operation of the low coast brake solenoid switches the low coast brake switching valve and controls

the coupling and releasing of the low coast brake. The low coast b rake reducing valve controls the low coast brake coupling force.

Control Valve ACS002AY

FUNCTION OF CONTROL VALVE

Name Function

In order to prevent the pressure supplied to the torque converter from being excessive,

Torque converter regulator valve

Pressure regulator valve Pressure regulator plug Pressure regulator sleeve

Front brake control valve

Accumulator control valve

Pilot valve A

Pilot valve B

Low coast brake switching valve During engine braking, supplies the line pressure to the low coast brake reducing valve.

Low coast brake reducing valve N-R accumulator Produces the stabilizing pressure for when N-R is selected.

Direct clutch piston switching valve Operates in 4th gear and sw itc hes t he di rec t clut ch cou pling capacity.

High and low reverse clutch control valve

the line pressure is adjusted to the optimum pressure (torque converter operating pressure).

Adjusts the oil discharged from the oil pump to the optimum pressure (line pressure) for the driving state.

When the front brake is coupled, adjusts the line pressur e to the opt i mu m pressure (front brake pressure) and supplies it to the front brake. (In 1st, 2nd, 3rd, and 5th gears, adjusts the clutch pressure.)

Adjusts the pressure (accumulator con trol pres sur e) acti ng on t he accumulator piston and low coast reducing valve to the pressur e appr opr ia te to the drivi ng state.

Adjusts the line pressure and produces the constant pressure (pilot pressure) required for line pressure control, shift change cont rol, and lock- up cont rol.

Adjusts the line pressure and produces the constant pressure (pilot pressure) required for shift change control.

When the low coast brake is coupled, adjusts the line pressure to the optimum pressure (low coast brake pressure) and suppl ies it to the low coast brake.

When the high and low reverse clutch is coupled, adjusts the line pressure to the optimum pressure (high and low reverse clutch pressure) and supplies it to the high and low reverse clutch. (In 1st, 3rd, 4th and 5th gears, ad jus ts the clutch pr essure.)

Revision; 2004 April 2003 G35 Coupe

AT-35

Page 49

A/T CONTROL SYSTEM

Name Function

When the input clutch is coupled, adjusts the line pressur e to the op tim um pres sure

Input clutch control valve

Direct clutch control valve

TCC control valve TCC control plug TCC control sleeve

Tor que converter lubrication valve

Cool bypass valve Allows excess oil to bypass cooler circuit without being fed into it. Line pressure relief valve Discharges excess oi l from l ine pres sur e circui t . N-D accumulator Produces the stabilizing press ure for when N-D is selected.

Manual valve

FUNCTION OF PRESSURE SWITCH

Name Function

Pressure switch 1 (FR/B)

Pressure switch 2 (LC/B)

Pressure switch 3 (I/C)

Pressure switch 5 (D/C)

Pressure switch 6 (HLR/C)

(input clutch pressure) and supplies it to the input clu tch . (In 4th and 5t h gear s, adj usts the clutch pressure.)

When the direct clutch is coupled, adjusts the line pressur e to the opt imum pressure (direct clutch pressure) and supplies it to the direct clu tch. ( In 2n d, 3rd, and 4th gear s, adjusts the clutch pressure.)

Switches the lock-up to operating or released. Also , by ex ecut ing th e loc k-u p oper at io n transiently, lock-up smoothly.

Operates during lock-up to switch the torqu e converter, cooling, and lubrication system oil path.

Sends line pressure to each circuit according to the select position. The circuits to which the line pressure is not sent drain.

Detects any malfunction in the front brake hydraulic pressure. When it detects any mal function, it puts the system into fail-safe mode.

Detects any malfunction in the low coast bra ke hydraulic pressure. When it dete cts any malfunction, it puts the system into fail-safe mode.

Detects any malfunction in the input clutch hydraulic pressure. When it detects any malfunction, it puts the system into fail-safe mode.

Detects any malfunction in the direct clutch hydraulic pressure. When it detects any malfunction, it puts the system into fail-safe mode.

Detects any malfunction in the high and low reverse cl utch hydraulic pressure. When it detects any malfunction, it puts the system into fail-safe mode.

Revision; 2004 April 2003 G35 Coupe

AT-36

Page 50

ON BOARD DIAGNOSTIC (OBD) SYSTEM

ON BOARD DIAGNOSTIC (OBD) SYSTEM PFP:00028

Introduction ACS002AZ

The A/T system has two self-dia gnostic system s. The first is the emission-related on board diagnostic system (OBD-II) performed by the TCM in combination with the ECM. The malfunction is indicated by the MIL (malfunction indicator lamp) and is stored as a DTC in the ECM memory but not the TCM memory. The second is the TCM original self-diagnosis indicated by the A/T CHECK indicator lamp. The malfunction is stored in the TCM memory. The detected ite ms are overl apped with O BD-II self-d iagnostic item s. For detail, refer to AT-87, "

Self-Diagnostic Result Test Mode" .

OBD-II Function for A/T System ACS002B0

The ECM provides emission-rel ated on boa rd diagnos tic (OBD-II) functi ons for the A/T system. O ne function is to receive a signal from the TCM used with OBD-related parts of the A/T system. The signal is sent to the ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a diagnostic result by means of the MIL (malfunction indicator lamp) on the instrument panel. Sensors, switches and solenoid valves are used as sensing elements. The MIL automatically illuminates in One or Two Trip Detection Logic when a malfunction is sensed in relation to A/T system p arts.

One or Two Trip Detection Logic of OBD-II ACS002B1

ONE TRIP DETECTION LOGIC

If a malfunction is sensed during the first test drive, the MIL will illuminate and the malfunction will be stored in the ECM memory as a DTC. The TCM is not provided with such a memory function.

TWO TRIP DETECTION LOGIC

When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC (diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. — First Trip If the same malfunction as that experienced during the first test drive is sensed during the second test drive, the MIL will illuminate . — Seco nd Trip The “trip” in the “One or Two Trip Detection Logic” me an s a dri vin g m od e i n w h ic h se lf -dia gn osis is performed during vehic le operation.

OBD-II Diagnostic Trouble Code (DTC) ACS002B2

HOW TO READ DTC AND 1ST TRIP DTC

DTC and 1st trip DTC can be read by the following methods. ( with CONSULT-II or GST) CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0720 etc.

These DTC are prescr ibed by SAE J2012. (CONSULT-II also displays the malfunctioning component or system.)

● 1st trip DTC No. is the same as DTC No.

● Output of the diagn ostic trouble co de indicate s that the indi cated circ uit has a malfun ction. How-

ever, in case of the Mode II and GST, they do not indicate whether the malfunction is still occurring or occurred in the past and returned to normal. CONSULT-II can identify them as shown below, therefore, CONSULT-II (if available) is recommended.

A sample of CONSULT-II display for DTC and 1st trip DTC is shown on the next page. DTC or 1st trip DTC of a malfunction is displayed in SELF-DIAGNOSTIC RESULTS mode for “ENGINE” with CONSULT-II. Time data indi ca te s h ow m a ny tim e s the vehicle wa s d r iv en after the last detection of a DTC.

SAT014K

Revision; 2004 April 2003 G35 Coupe

AT-37

Page 51

ON BOARD DIAGNOSTIC (OBD) SYSTEM

If the DTC is being detected currently, the time data will be “0”.

If a 1st trip DTC is stored in the ECM, the time data will be “1t”.

SAT015K

SAT016K

Freeze Frame Data and 1st Trip Freeze Frame Data

The ECM has a m emory function, which stores the driving co ndition such as fuel system status, calculat ed load value, engin e coolant temperature, short term fuel trim, long term fuel trim, engine speed and vehicle speed at the moment the ECM detects a malfunction. Data which are stored in the ECM mem ory, along with the 1st t rip DTC , are called 1st trip free ze fram e data, and the data, stored t ogether with the DT C data, are cal led fr eeze f rame da ta and di spla yed on CONS ULT-II or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For detail, refer to EC-107, " Only one set o f freez e fram e da ta (either 1st tri p f reeze frame data of freeze fram e data) c an be store d in t he ECM. 1st trip freez e frame data is s tored in the ECM mem ory al ong wi th the 1st trip DT C. Th ere is no priori ty for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no longer stored. R eme mbe r, only one set of freez e fram e data ca n be st ored i n th e ECM. Th e ECM has t he fol lowing priorities to upda te the data.

Priority Items

1 Freeze frame data Misfire — DTC: P0300 - P0306

2 Except the above items (Includes A/T related items) 3 1st trip freeze frame data

Both 1st trip freeze frame data and freeze frame data (along with the DTC) are cleared when the ECM memory is erased.

CONSULT-II Function" .

Fuel Injection System Function — DTC: P0171, P0172, P0174, P0175

HOW TO ERASE DTC

The diagnostic trouble code can be erased by CONSULT-II, GST or ECM DIAGNOSTIC TEST MODE as described following.

● If the battery cable is disconnected, the diagnostic trouble code will be lost within 24 hours.

● When you eras e th e DTC , u si n g CON SU LT-II o r GST is ea si er a nd qui ck er th an swi t chi n g th e m od e

selector on the ECM.

The following em ission-related diagnostic in formation is cleared from the ECM memory when erasing DTC related to OBD-II. For details, refer to EC-51, "

● Diagnostic trouble codes (DTC)

● 1st trip diagnostic trouble codes (1st trip DTC)

● Freeze frame data

Revision; 2004 April 2003 G35 Coupe

Emission-Rel ated Diagnostic Information" .

AT-38

Page 52

ON BOARD DIAGNOSTIC (OBD) SYSTEM

● 1st trip freeze frame data

● System readiness test (SRT) codes

● Test values

HOW TO ERASE DTC (WITH CONSULT-II)

● If a DTC is displayed for both ECM and TCM, it is necessary to be erased for both ECM and TCM.

1. If the ignition switch stays “ON” after repair work, be sure to turn igniti on swit ch “OF F” once. Wait at least 10 seconds and then turn it “ON” (engine stopped) again .

2. Turn CONSULT-II “ON” and touch “A/T”.

3. Touch “SELF-DIAG RESULTS”.

4. Touch “ERASE”. (The DTC in the TCM will be erased.) Then touch “BACK” twice.

5. Touch “ENGINE”.

6. Touch “SELF-DIAG RESULTS”.

7. Touch “ERASE”. (The DTC in the ECM will be erased.)

SCIA5671E

HOW TO ERASE DTC (WITH GST)

1. If the ignition switch stays “ON” after repair work, be sure to turn igniti on swit ch “OF F” once. Wait at least 10 seconds and then turn it “ON” (engine stopped) again .

2. Perform “TCM SELF-DIAGNOSTIC PROCEDURE (No To ols)”. Refer to AT- 96 , "

TIC PROCEDURE (NO TOOLS)" . (The engine warm-up step can be ski pped when pe rforming the diag-

nosis only to er ase the DTC.)

3. Select Mode 4 with Generic Scan Tool (GST). For details, refer to EC-119, "

Function" .

TCM SELF-DIAGNOS-

Generic Scan Tool (GST)

Revision; 2004 April 2003 G35 Coupe

AT-39

Page 53

ON BOARD DIAGNOSTIC (OBD) SYSTEM

HOW TO ERASE DTC (NO TOOLS)

The A/T CHECK indicator la mp is located on the instrument panel.

1. If the ignition switc h stays “ON” aft er repair work, be sure to turn ig nitio n switc h “OFF” on ce. Wait at least 10 seconds and t hen turn it “ON” (engine stopped) again.

2. Perform “TCM SELF-DIAGNOSTIC PROCEDURE (No Tools)”. Refer to AT- 9 6 , "

TIC PROCEDURE (NO TOOLS)" . (The engine wa rm- up st ep c an be ski pped wh en pe rformi ng th e di ag -

nosis only to erase the DTC.)

3. Perform “OBD-II SELF-DIAGNOSTIC PROCEDURE (No tools)”. Refer to EC-64, "

TCM SELF-DIAGNOS-

How to Erase DTC" .

Malfunction Indicator Lamp (MIL) ACS002B3

DESCRIPTION

The MIL is located on the instr ument panel.

1. The MIL will light up when the ignition switch is turned “ON” without the engine running. This is a bulb check.

● If the MIL does not light up, refer to DI-32, "WARNING LAMPS" ,

or see EC-628, "

2. When the engine is started, the MIL should go off. If the MIL remains on, the on board diagnostic system has detected an engine system malfunction.

MIL AND DATA LINK CONNECTOR" .

SEF217U

Revision; 2004 April 2003 G35 Coupe

AT-40

Page 54

TROUBLE DIAGNOSIS

TROUBLE DIAGNOSIS PFP:00004

DTC Inspection Priority Chart ACS002B4

If some DTCs are disp laye d at the s ame t ime, perform insp ecti ons o ne by one b ase d on th e foll owi ng prio rit y chart.

NOTE: If DTC U1000 is displayed with other DTCs, first perform the trouble diagnosis for DTC U1000. Refer to

AT-98

Priority Detected items (DTC)

1 U1000 CAN communication line 2 Except above

Fail-Safe ACS002B5

The TCM has a n el ectric al fa il-sa fe m ode. This mod e ma kes it po ssi ble t o op erate even i f the re is a malf unction in a main electronic control input/output signal circuit. In fail safe mode, even if the selector lever is “D” or “M” mode, the transmission is fixed in 2nd or 4th (depending on the breakdown position), so the customer should feel “slipping” or “poor acceleration”. When fail-safe mode is triggered, when the ignition switch is switched “ON”, the A/T CHECK indicator lamp flashes for about 8 seconds. (Refer to AT- 96, " Even when the electronic circuits are normal, under special conditions (for example, when slamming on the brake with the wheels spinning drastically and stopping the tire rotation), the transmission can go into fail-safe mode. If this h appens, swit ch “OFF” the ignition switch for 10 seconds, then switc h it “ON” a gain to retu rn to the normal shift pattern. Also, the A/T CHECK indicator lamp flashes for about 8 seconds once, then is cleared. Therefore, the customer's vehicle has returned to normal, so handle according to the “diagnostics flow” (Refer to AT-44

TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" ).

FAIL-SAFE FUNCTION

If any malfunction occurs in a sensor or solenoid, this function controls the A/T to make driving possible.

Vehicle Speed Sensor

● Signals are i nput from two syste ms - from vehicle spee d sensor A/T (revol ution sensor) installe d on the

transmission and from combination meter so normal driving is possible even if there is a malfunction in one of the sy st em s. And if vehicle sp eed sensor A/T (r ev olu tion sensor) has un us ual cases, 5th g ea r an d manual mode are prohibited.

Accelerator Pedal Position Sensor

● If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM accord-

ing to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow systems, the engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.

Throttle Position Sensor

● If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM accord-

ing to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow systems, the ac cele rator op en ing an gle is cont rolled by the idle s igna l se nt from the EC M wh ich is ba se d on input indicati ng either i dle cond ition or off-idle conditi on (pre-de termine d accele rator open ing) in ord er to make driving possible.

PNP Switch

● In the unlikely ev ent t hat a mal func tio n sign al ente rs t he TCM, the posi ti on ind icato r is swi tche d “O FF”, the

starter relay is switched “OFF” (starter starting is disabled), and the position is fixed to the “D” range to make driving po ssible.

Starter Relay

● The starter relay is switched “OFF”. (Starter starting is disabled.)

Revision; 2004 April 2003 G35 Coupe

AT-41

Page 55

TROUBLE DIAGNOSIS

A/T Interlock

● If there is an A/T interlock judgment malfunction, the transmission is fixed in 2nd gear to make driving pos-

sible.

NOTE: When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed, but this is not a turbine revolution sensor malfunction.

● When the coupling pattern below is detected, the fail-safe action corresponding to the pattern is per-

formed.

A/T INTERLOCK COUPLING PATTERN TABLE

●: NG X: OK

Clutch pressure output pattern after fail-safe func-

tion

I/C HLR/C D/C FR/B LC/B L/U

OFF OFF ON OFF OFF OFF

Gear position

A/T interlock coupling pattern

ATF pressure switch output

SW3

(I/C)

3rd – X X – ●

4th – X X – ●

5th X X – X ●

SW6

(HLR/

SW5

(D/C)

SW1

(FR/B)

SW2

(LC/B)

Fail-safe

function

Held in

2nd gear

Held in

2nd gear

Held in

2nd gear

A/T 1st Engine Braking

● When there is an A/T first gear engine brake judgment malfunction, the low coast brake solenoid is

switched “OFF” to avoid the engine brake operation.

Line Pressure Solenoid

● The solenoid is switched “OFF” and the line pressure is set to the maximum hydraulic pressure to make

driving possible.

Torque Converter Clutch Solenoid

● The solenoid is switched “OFF” to release the lock-up.

Low Coast Brake Solenoid

● When a (electrical or functional) malfunction occurs, in order to make driving possible, if the solenoid is

“ON”, the transmission is held in 2nd gear; if the solenoid is “OFF”, the transmission is held in 4th gear. (engine brake is not applied in 1st and 2nd gear.)

Input Clutch Solenoid

● If a (electrical or functional) malfunction occurs with the solenoid either “ON” or “OFF”, the transmission is

held in 4th gear to make driving possible.

Direct Clutch Solenoid

● If a (electrical or functional) malfunction occurs with the solenoid either “ON” or “OFF”, the transmission is

held in 4th gear to make driving possible.

Front Brake Solenoid

● If a (electrical or functional) malfunction occurs with the solenoid “ON”, in order to make driving possible,

the A/T is held in 5th gear; if the solenoid is OFF, 4th gear.

High and Low Reverse Clutch Solenoid

● If a (electrical or functional) malfunction occurs with the solenoid either “ON” or “OFF”, the transmission is

held in 4th gear to make driving possible.

Turbine Revolution Sensor 1 or 2

● The control is the same as if there were no turbine revolution sensors, 5th gear and manual mode are pro-

hibited.

Revision; 2004 April 2003 G35 Coupe

AT-42

Page 56

TROUBLE DIAGNOSIS

How To Perform Trouble Diagnosis For Quick and Accurate Repair ACS002B6

INTRODUCTION

The TCM receive s a si gnal from th e veh icle spee d se nsor, accelerator p edal posi tion s enso r (throt tle posi tion sensor) or PNP s witch and provides shift contr ol or lock-up control via A/T solenoid valves. The TCM also communicates with the ECM by means of a sign al sent from sensing el ements used with the OBD-rel ated parts of the A/T system for m alfunction-diagno stic purposes. The TCM is capable of diagnosing malfunctioning parts while the ECM can store malfunctions in its memory . Input and output signals must always be correct and stable in the operation of th e A/T sy stem. T he A/T system m ust be in good oper ating condition and be free of valve seizure, solenoid valve malfunction, etc.

It is much more difficult to diagnose an error that occurs intermittently rather than co ntinuously. Most intermittent errors are caused by poor electric connections or improper wiring. In this case, careful checking of suspected circuits may help prevent the replacement of good parts. A visual check only may not find the cause of the errors. A road test with CONSULT-II (or GST) or a c ircuit tester connected shou ld be performed. F o llow the AT-44, "

WORK FLOW" .

Before undertaking actual checks, take a few minutes to talk with a customer who approaches with a driveability complaint. The customer can supply good information about such errors, especially intermittent ones. Find out what symptoms are present and under what conditions they occur. A “Diagnostic Worksheet” as shown on the example (Refer to AT-45

) should be used. Start your diagnosis by looking for “conventional” errors first. This will help troubleshoot driveability errors on an electronically controlled engine vehicle. Also check related Service bulletins.

SAT631IB

SAT632I

SEF234G

Revision; 2004 April 2003 G35 Coupe

AT-43

Page 57

TROUBLE DIAGNOSIS

WORK FLOW

A good understanding of t he malfunction conditions can make troubleshooting faster and more accurate. In general, each customer feels differently about a malfunction. It is important to fully understand the symptoms or conditions for a customer complaint. Make good use of the two sheets provided, “Information From Customer” (Refer to AT-45 Worksheet” (Refer to AT-45

), to perform the best trou bleshooting possible.

Work Flow Ch art

) and “Diagno stic

SCIA0501E

*1. AT-45 *2. AT-45 *3. AT-41 *4. AT-50 *5. AT-50, AT-51 *6. AT-53 *7. AT-86 *8. AT-37 *9. AT-96 *10. AT-98 *11. AT-237 *12. AT-239 *13. AT- 281 *14. AT-60 *15. AT-38 *16. AT-98 *17. AT-233 *18. EC-51

Revision; 2004 April 2003 G35 Coupe

AT-44

Page 58

TROUBLE DIAGNOSIS

DIAGNOSTIC WORKSHEET Information Fr om Customer

KEY POINTS

● WHAT..... Vehicle and A/T model

● WHEN..... Date, Frequencies

● WHERE..... Road conditions

● HOW..... Operating conditions, Symptoms

Customer name MR/MS Model & Year VIN Trans. Model Engine Mileage Incident Date Manuf. Date In Service Date Frequency ❏ Continuous ❏ Intermittent ( times a day) Symptoms ❏ Vehicle does not move. (❏ Any pos ition ❏ Particular position)

❏ No up-shi ft (❏ 1st → 2nd ❏ 2n d → 3rd ❏ 3rd → 4th ❏ 4th → 5th) ❏ No down-shift (❏ 5th → 4th ❏ 4th → 3rd ❏ 3rd → 2nd ❏ 2nd → 1st) ❏ Lock-up malfunction ❏ Shift point too high or too low. ❏ Shift shock or slip (❏ N → D ❏ Lock-up ❏ Any drive posit ion) ❏ Noise or vibration ❏ No kick down ❏ No pattern select ❏ Others

()

A/T CHECK indicator lamp Blinks for about 8 seconds.

❏ Continuously lit ❏ Not lit

Malfunction indicator lamp (MIL) ❏ Continuously lit ❏ Not lit

Diagnostic Worksheet Chart

1 ❏ Read the item on “cautions concerning fail-safe and understand the customer's complaint. AT-41

❏ A/T fluid inspection

❏ Stall test and line pressure test

❏ Leak (Repair leak location.) ❏ Stat e ❏ Amount

❏ Stall test

❏ Torque converter one-way clutch ❏ Front brake ❏ High and low reverse clutch ❏ Low coast brake ❏ Forward brake ❏ Forward one-way clutch

❏ 1st one-way clutch ❏ 3rd one-way clutch ❏ Engine ❏ Line pressure low ❏ Except for input clutch and direct

clutch, clutches and brakes OK

AT-50

AT-50 51

, AT-

❏ Line pressure inspection - Suspected part:

Revision; 2004 April 2003 G35 Coupe

AT-45

Page 59

TROUBLE DIAGNOSIS

❏ Execute all road tests and enter checks in required inspectio n item s. AT-53

Check before engine is started

❏ The A/T CHECK Indicator Lamp does come on. AT-241 . ❏ Execute self-diagnostics Enter checks for detect ed item s .

❏ Vehicle speed sensor·A/T. AT-110 ❏ Vehicle speed sensor·MTR. AT-157 ❏ Direct clutch solenoid valve. AT-189 ❏ TCC solenoid valve. AT-117 ❏ Line pressure solenoid valve.AT-127 ❏ Input clutch solenoid valve. AT-170 ❏ Front brake solenoid valve. AT-179 ❏ Low coast brake solenoid valve. AT-208

4-1.

Idle inspection ❏ Engine Cannot Be Started in “P” and “N” Position. AT-243 .

4-2.

4-3.

❏ In “ P” Position, Vehicle Moves When Pushed. AT-243 ❏ In “N” Position Vehicle Moves. AT-245 ❏ Large Shock “N” to “D ” P o si tion. AT-246 ❏ Vehicle Does Not Creep Backward In “R” Position. AT-249 ❏ Vehicle does Not Creep Forward In “D” Position. AT-251

Driving tests Part 1

❏ Vehicle Cannot Be Started From D1. AT-255 ❏ A/T Does Not Shift: D1 → D2. AT-257 ❏ A/T Does Not Shift: D2 → D3. AT-259 ❏ A/T Does Not Shift: D3 → D4. AT-262 ❏ A/T Does Not Shift: D4 → D5. AT-264 ❏ A/T Does Not Perform Lock-up. AT-266 ❏ A/T Does Not Hold Lock-up Condition. AT-269 . ❏ Lock-up Is Not Released. AT-270 ❏ Engine Speed Does Not Return To Idle. AT-271

❏ High and low reverse clutch solenoid valve. AT-198 ❏ PNP switch. AT-105 ❏ A/T fluid temperature sensors 1, 2. AT-146 ❏ Turbine revolution sensors 1, 2. AT-152 ❏ A/T interlock. AT-159 ❏ A/T 1st engine braking. AT-166 ❏ Start signal. AT-101 ❏ Accelerator pedal position signal. AT-144 ❏ Engine speed signal. AT-115 ❏ CAN communication. AT-98 ❏ TCM power supply. AT-132 ❏ Battery ❏ Other

. . .

. . . . .

AT-54

AT-55

Revision; 2004 April 2003 G35 Coupe

AT-46

Page 60

TROUBLE DIAGNOSIS

Part 2

❏ Vehicle Cannot Be Started From D1. AT-255 . ❏ A/T Does Not Shift: D1 → D2. AT-257 ❏ A/T Does Not Shift: D2 → D3. AT-259 ❏ A/T Does Not Shift: D3 → D4. AT-262

Part 3

❏ Cannot Be Changed Manual Mode. AT-272 ❏ A/T Does Not Shift: 5th gear→ 4th gear. AT-273 . ❏ A/T Does Not Shift: 4th gear → 3rd gear. AT-275 ❏ A/T Does Not Shift: 3rd gear → 2nd gear. AT-277 ❏ A/T Does Not Shift: 2nd gear →1st gear. AT-279 ❏ Vehicle Does Not Decelerate By Engine Brake. AT-281 ❏ Execute self-diagnostics Enter checks for detec ted item s.

❏ Vehicle speed sensor·A/T. AT-110 ❏ Vehicle speed sensor·MTR. AT-157

44-3

❏ Inspect each system for items found to be NG in the sel f -diagnostics and repair or replace the malfunction

parts.

6 ❏ Execute all road tests and enter the ch ecks again for the required items. AT-53

❏ For any remaining NG items, execute the “diagnostics procedure” and repair or replace the malfunction parts.

See the chart for diagnostics by symptoms . (This chart al so contains other symptoms and inspection procedures.)

8 ❏ Erase the results of the self-diagno st ic s from the TCM .

❏ Direct clutch solenoid valve.AT-189 ❏ TCC solenoid valve. AT-117 ❏ Line pressure solenoid valve.AT-127 ❏ Input clutch solenoid valve. AT-170 ❏ Front brake solenoid valve. AT-179 ❏ Low coast brake solenoid valve. AT-208 ❏ High and low reverse clutch solenoid valv e. AT-198 ❏ PNP switch. AT-105 . ❏ A/T fluid temperature sensors 1, 2. AT-146 ❏ Turbine revolution sensors 1, 2. AT-152 ❏ A/T interlock. AT-159 ❏ A/T 1st engine braking. AT-166 ❏ Start signal.AT-101 ❏ Accelerator pedal position signal. AT-144 ❏ Engine sped signal. AT-115 ❏ CAN communication. AT-98 ❏ TCM power supply. AT-132 ❏ Battery ❏ Other

. . .

AT-57

AT-58

AT-60

AT-86 96

, AT-

Revision; 2004 April 2003 G35 Coupe

AT-47

Page 61

TROUBLE DIAGNOSIS

A/T Electrical Parts Location ACS002B7

SCIA1999E

Revision; 2004 April 2003 G35 Coupe

AT-48

Page 62

TROUBLE DIAGNOSIS

Circuit Diagram ACS002B8

TCWT0098E

Revision; 2004 April 2003 G35 Coupe

AT-49

Page 63

TROUBLE DIAGNOSIS

Inspections Before Trouble Diagnosis ACS002B9

A/T FLUID CHECK Fluid Leakage and Fluid Level Check

● Inspect for fluid leakage and check the fluid level. Refer to AT-13, "Checking A/T Fluid" .

Fluid Conditio n Check

Inspect the fluid condition.

Fluid status Conceivable Cause Required Operation

Replace the A/T fluid and check the Varnished (viscous varnish state)

Milky white or cloudy

Large amount of metal powder mixed in

STALL TEST Stall Test Procedure

1. Inspect the amount of engine oil. Replenish the engine oil if necessary.

2. Drive for about 10 minutes to warm up the vehicle so that the A/ T fluid temperature is 50 to 80°C (122 to 176°F). Inspect the amount of A/T fluid. Replenish if necessary.

Clutch, brake scorched

Water in the fluid

Unusual wear of sliding parts within A/T

A/T main unit and the vehicle for malfunctions (wire harnesses, cooler pipes, etc.)

Replace the A/T fluid and check for places where water is getting in.

Replace the A/T fluid and check for improper operation of the A/T.

SAT638A

3. Securely engage the parking brake so that the tire s do not turn.

4. Engine start, apply foot brake, and place selector lever in “D” position.

5. While holding down the foot brake, gradually press down the accelerator pedal.

6. Quickly read o ff the stall speed, then qui ckly remove your foot from the accelerator pedal.

CAUTION:

Do not hold down the accelerator pedal for more than 5 seconds during this test.

7. Move the selector lever to the “N” position.

8. Cool down the A/T fluid.

SAT647B

SCIA1224E

SAT514G

Revision; 2004 April 2003 G35 Coupe

AT-50

Page 64

TROUBLE DIAGNOSIS

CAUTION:

Run the engine at idle for at least one minute.

Stall speed: 2,600 - 2,900 rpm

Judgement Stall Test

Selector lever position

D, M R

● Forward brake

Stall rotation

O: Stall speed within standard value position H: Stall speed higher than standard value L: Stall speed lower than standard value

● Forward one-way clutch

● 1st one-way clutch

● 3rd one-way clutch

● Reverse brake

● Engine and torque converter one-w ay cl utch

● Line pressure low

Stall test standard value position

Does not shift-up D, M position 1 → 2 Slipping in 2nd, 3rd or 4th gear Direct clutch slippage Does not shift-up D, M position 2 → 3 Slipping in 3rd, 4th or 5th gear High and low reverse clutch slippage Does not shift-up D, M position 3 → 4 Slipping in 4th or 5th gear Input clutch slippage Does not shift-up D, M position 4 → 5 Slipping in 5th gear Front brake slippage

Expected problem location

LINE PRESSURE TEST Line Pressure Test Port

SCIA1291E

Line Pressure Test Procedure

1. Inspect the amount of engine oil and replenish if necessary.

2. Drive the car for about 10 minutes to warm it up so that the A/T fluid reaches in range of 50 to 80°C (122 to 176°F), then inspect the amount of A/T fluid and replenish if nece ssary.

NOTE: The automatic fluid temperature rises in range of 50 to 80°C (122 to 176°F) during 10 minutes of driving.

Revision; 2004 April 2003 G35 Coupe

AT-51

Page 65

TROUBLE DIAGNOSIS

3. After warming up A/T, remove the oil pressure detection plug and install the oil pressure gauge.

CAUTION:

When using the oil pressure gauge, be sure to use the Oring attached to the oil pressure detection plug.

4. Securely engage the parking brake so that the tire s do not turn.

SCIA5309E

5. Start the en gi n e, t hen me as ure th e l in e pr es su re at b ot h i dl e and the stall speed.

CAUTION:

● Keep the brake pedal pressed all the way down during

measurement.

● When measuring the line pressure at the stall speed,

refer to AT-50, "

STALL TEST" .

6. After the measurements are complete, install the oil pressure detection plug and tighten to the regulation torque below.

:6.3 N·m (0.64 kg-m, 56 in-lb)

CAUTION:

Do not reuse the O-ring.

Line Pressure

Engine speed

“R” position “D” and “M” positions idle speed 392 - 441 (4.0 - 4.5, 57 - 64) 373 - 422 (3.8 - 4.3, 54 - 61) stall speed 1,700 - 1,890 (17.3 - 19.3, 247 - 274) 1,310 - 1,500 (13.3 - 15.3, 190 - 218)

Line pressure kPa (kg/cm

, psi)

SCIA1224E

SAT493G

Revision; 2004 April 2003 G35 Coupe

AT-52

Page 66

TROUBLE DIAGNOSIS

Judgement of Line Pressure Test

Judgement Possible cause

Possible causes include malfunctions in the pre ssur e supply system and low oil pump output. For example

Low for all positions (P, R, N, D, M)

Only low for a spe-

Idle speed

Stall speed

cific position

High

Oil pressure does not rise higher than the oil pressure for idle.

The pressure rises, but does not enter the standard position.

Only low for a specific position

ROAD TEST Description

● The road test ins p ects over all performance of the A/T an d analyzes possible malfun ction causes.

● The road test is carried out in the following three stages.

1. Check before engine is started. Refer to AT-54

2. Check at idle. Refer to AT-54

3. Cruise test

● Inspect all the items from Part 1 to Part 3. Refer to AT-55 , AT-57 , AT-58 .

● Before beginning the road test, check the test procedure and inspection items.

● Test all inspection items u ntil th e sy mpt om i s un cove r ed. Di ag nose NG i te ms when al l r oad t es t s ar e com-

plete.

● Oil pump wear

● Pressure regulator valve or plug sticking or spring fatigue

● Oil strainer Þ oil pump Þ pressure regulator valve passage oil leak

● Engine idle speed too low

Possible causes include an oil pressure leak in a passage or device related to the position after the pressure is distributed by the manual valve.

Possible causes include a sensor malfunction or malfunction in the line pressure adjustment function. For example

● Accelerator pedal position signal malfunction

● ATF temperature sensor malfunction

● Line pressure solenoid malfunct i on (s ticki ng in “OFF” state, filter clog, cut line)

● Pressure regulator valve or plug sticking

Possible causes include a sensor malfunction or malfunction in the line pressure adjustment function. For example

● Accelerator pedal position signal malfunction

● TCM breakdown

● Line pressure solenoid malf uncti on (s hor ting, st ick ing in “ ON ” state)

● Pressure regulator valve or plug sticking

● Pilot valve sticking or pilot filter clogged

Possible causes include malfunctions in the pre ssur e supply system and malfunction in the line pressure adjustment function. For example

● Accelerator pedal position signal malfunction

● Line pressure solenoid malf uncti on (s ticki ng, filter clog)

● Pressure regulator valve or plug sticking

● Pilot valve sticking or pilot filter clogged

Possible causes include an oil pressure leak in a passage or device related to the position after the pressure is distributed by the manual valve.

Revision; 2004 April 2003 G35 Coupe

AT-53

Page 67

TROUBLE DIAGNOSIS

Check Before Engine is Started ACS002BA

1. CHECK A/T CHECK INDICATOR LAMP

1. Park vehicle on level surface.

2. Move selector lever to “P” position.

3. Turn ignition switch to “OFF” position and wait at least 10 seconds.

4. Turn ignition switch to “ON” position. (Do not start engine.) Does A/T CHECK indicator lamp light up for about 2 seconds?

Yes >> GO TO 2. No >> Stop the r oad test and go to AT-241, "

A/T CHECK Indicator Lamp Does Not Come On" .

2. CHECK A/T CHECK INDICATOR LAMP

Does A/T CHECK indicator lamp flash for about 8 seconds?

Yes >> Fo r TCM fail-safe mode, carry out se lf-diagnostics and record all N G items on the diagnostics

worksheet. Refer to AT-86

No >> 1. Turn ignition switch to “OFF” position.

2. Go to AT-54, "

Check at Idle" .

, AT-96 .

Check at Idle ACS002BB

1. CHECK STARTING THE ENGINE

1. Park vehicle on level surface.

2. Move selector lever to “P” position.

3. Turn ignition switch to “OFF” position.

4. Turn ignition switch to “START” position. Does the engine start?

Yes >> GO TO 2. No >> Stop the r oad test and go to AT-243, "

Engine Cannot Be Started In “P” or “N” Position" .

2. CHECK STARTING THE ENGINE

1. Turn ignition switch to “ACC ” position .

2. Move selector lever in “D” or “R” position.

3. Turn ignition switch to “START” position. Does the engine start in either position?

Yes >> Stop the road test and go to AT-243, "Engine Cannot Be Started In “P” or “N” Position" . No >> GO TO 3.

3. CHECK “P” POSITION FUNCTIONS

1. Move selector lever to “P” position.

2. Turn ignition switch to “OFF” position.

3. Disengage the parking brake.

4. Push the vehicle forward or backward.

5. Engage the parking brake. When you push the vehicle with disengaging the parking brake, does it move?

Yes > >Enter a check mark at “ Vehicle moves when pus he d in “ P” p os iti on ” on th e d iag no st ic s wo rk shee t ,

then continue the road test.

No >> GO TO 4.

Revision; 2004 April 2003 G35 Coupe

AT-54

Page 68

TROUBLE DIAGNOSIS

4. CHECK “N” POSITION FUNCTIONS

1. Start the engine.

2. Move selector lever to “N” position.

3. Disengage the parking brake. Does vehicle move forward or backwar d?

Y es >> Enter a check mark at “Vehicle moves in “N” position” on the diagnostics worksheet, then continue

the road test.

No >> GO TO 5.

5. CHECK SHIFT SHOCK

1. Engage the brake.

2. Move selector lever to “D” position. When the transmission is shifted from

Yes >> Enter a check mark at “Large shock when shifted from N to D” on the diagnostics worksheet, then

continue the road test.

No >> GO TO 6.

“N” to “D”, is there an excessive shock?

6. CHECK “R” POSITION FUNCTIONS

1. Engage the brake.

2. Move selector lever to “R” position.

3. Disengage the brake for 4 to 5 seconds. Does the vehicle creep backward?

Yes >> GO TO 7. No >> Enter a check mark at “Vehicle does not creep backward in R position” on the diagnostics work-

sheet, then continue the road test.

7. CHECK “D” POSITION FUNCTIONS

Inspect whether the vehicle moves forward when the transmission is put into the “D” position. Does the vehicle move forward in the

Ye s > > G o to AT-55, "Crui se Test - Part 1" , AT-57, "Cruise Te st - Part 2" , and AT- 58, " Cruise Test - Part

3" .

No >> Ent er a check mark at “Vehicle does not move forward i n D position” on the diagnostic s work-

sheet, then continue th e road test.

“D” position?

Cruise Test - Part 1 ACS002BC

Cruise test Part 1

1. CHECK STARTING OUT FROM D1

1. Drive the veh icle for about 10 minutes to w arm up the engi ne oil and A/T fluid. Appropriate temperatur e for the A/T fluid: 50 - 80°C (122 - 176°F)

2. Park the vehicle on a level surface.

3. Move selector lever to “P” position.

4. Start the engine.

5. Move selector lever to “D” position.

6. Press the accelerator pedal about half way down t o accelerate the vehicle.

With CONSULT-II

Read off the gear positions. Starts from D1?

Yes >> GO TO 2. No >> Ent er a check mark at “Vehicle cannot be started from D 1” on the diagnostics worksheet, then

continue the road test.

Revision; 2004 April 2003 G35 Coupe

AT-55

Page 69

TROUBLE DIAGNOSIS

2. CHECK SHIFT-UP D1 → D2

Press down the acce ler ator p edal about half way an d ins pect if the vehi cle s hif ts up (D1 → D2 ) at th e app rop riate speed.

● Refer to AT-59 .

With CONSULT-II

Read the gear position, throttle degree of op ening, and vehicle speed. Does the A/T shift up D1

Yes >> GO TO 3. No >> En ter a c hec k ma rk at “A/T do es n ot s hift D 1 → D2 ” on the diagnos tics worksh eet, then contin ue

the road test.

→ D2 at the correct speed?

3. CHECK SHIFT-UP D2 → D3

Press down the acce ler ator p edal about half way an d ins pect if the vehi cle s hif ts up (D2 → D3 ) at th e app rop riate speed.

● Refer to AT-59 .

With CONSULT-II

Read the gear position, throttle degree of op ening, and vehicle speed. Does the A/T shift up D2

Yes >> GO TO 4. No >> En ter a c hec k ma rk at “A/T do es n ot s hift D 2 → D3 ” on the diagnos tics worksh eet, then contin ue

the road test.

→ D3 at the correct speed?

4. CHECK SHIFT-UP D3 → D4

Press down the acce ler ator p edal about half way an d ins pect if the vehi cle s hif ts up (D3 → D4 ) at th e app rop riate speed.

● Refer to AT-59 .

With CONSULT-II

Read the gear position, throttle degree of op ening, and vehicle speed. Does the A/T shift up D3

Yes >> GO TO 5. No >> En ter a c hec k ma rk at “A/T do es n ot s hift D 3 → D4 ” on the diagnos tics worksh eet, then contin ue

the road test.

→ D4 at the correct speed?

5. CHECK SHIFT-UP D4 → D5

Press down the acce ler ator p edal about half way an d ins pect if the vehi cle s hif ts up (D4 → D5 ) at th e app rop riate speed.

● Refer to AT-59 .

With CONSULT-II

Read the gear position, throttle degree of op ening, and vehicle speed. Does the A/T shift up D4

Yes >> GO TO 6. No >> En ter a c hec k ma rk at “A/T do es n ot s hift D 4 → D5 ” on the diagnos tics worksh eet, then contin ue

the road test.

→ D5 at the correct speed?

Revision; 2004 April 2003 G35 Coupe

AT-56

Page 70

TROUBLE DIAGNOSIS

6. CHECK LOCK-UP

When releasing accelerator pedal from D5, check lock-up from D5 to L/U.

● Refer to AT-59 .

With CONSULT -II Select “TCC SOLENOID 0.00A” with the “MA IN SIGNAL” mode for A/T. Refer to AT-86, "

ERENCE VALUE" .

Does it lock-up?

Yes >> GO TO 7. No >> Enter a check mark at “A/T does not perform lock-up” on the diagnostics worksheet, then continue

the road test.

CONSULT-II REF-

7. CHECK LOCK-UP HOLD

Does it maintain lock-up status?

Yes >> GO TO 8. No >> Enter a check mark at “A/T hold does not lock-up condition” on the diagnostics worksheet, then

continue the road test.

8. CHECK LOCK-UP RELEASE

Check lock-up cancellation by depressing brake pedal lightly to decelerate.

With CONSULT -II Select “TCC SOLENOID 0.00A” with the “MA IN SIGNAL” mode for A/T. Refer to AT-86, "

ERENCE VALUE" .

Does lock-up cancel?

Yes >> GO TO 9. No >> Ent er a ch eck ma rk at “ Lock -up is not rele ased” on the dia gnosti cs work sheet, then co ntinue the

road test.

CONSULT-II REF-

9. CHECK SHIFT-DOWN D5 → D4

Decelerate by pressing lightly on the brake p edal.

With CONSULT -II Read the gear position and engine speed.

When the A/T shift down D5

Yes >> 1. Stop the vehicle.

2. Go to Cruise test - Part 2 (Refer to AT-57

No >> Ent er a check mark at “A/T do es not sh ift down” on th e diagno stics work sheet, then cont inue the

road test. Go to Cruise test - Part 2 (Refer to AT-57

→ D4, does the engine speed dro p sm oo thl y ba ck to idle ?

Cruise Test - Part 2 ACS002BD

Cruise test Part 2

1. CHECK STARTING FROM D1

1. Move selector lever the “D” position.

2. Accelerate at half throttle.

With CONSULT -II Read the gear posi tion.

Does it start from D1?

Yes >> GO TO 2. No >> Ent er a check mark at “Vehicle cannot be started from D 1” on the diagnostics worksheet, then

continue the road test.

Revision; 2004 April 2003 G35 Coupe

AT-57

Page 71

TROUBLE DIAGNOSIS

2. CHECK SHIFT-UP D1 → D2

Press the accelerator pedal down all the way and inspect whether or not the transmission shifts up (D1 → D2) at the correct speed.

● Refer to AT-59 .

With CONSULT-II

Read the gear position, throttle position and vehicle speed. Does the A/T shift-up D1

Yes >> GO TO 3. No >> Enter a c heck mark a t “Vehicle does not shift D1 → D2” on th e diagnos tics wo rksheet , then con -

tinue the road test.

→ D2 at the correct speed?

3. CHECK SHIFT-UP D2 → D3

Press the accelerator pedal down all the way and inspect whether or not the transmission shifts up (D2 → D3) at the correct speed.

● Refer to AT-59 .

With CONSULT-II

Read the gear position, throttle position and vehicle speed. Does the A/T shift-up D2

Yes >> GO TO 4. No >> Enter a c heck mark a t “Vehicle does not shift D2 → D3” on th e diagnos tics wo rksheet , then con -

tinue the road test.

→ D3 at the correct speed?

4. CHECK SHIFT-UP D3 → D4 AND ENGINE BRAKE

When the transmission changes speed D3 → D4, return the accelerator pedal. Does the A/T shift-up D3

Yes >> 1. Stop the vehicle.

2. Go to Cruise test - Part 3 (Refer to AT-58

No >> Enter a c heck mark a t “Vehicle does not shift D3 → D4” on th e diagnos tics wo rksheet , then con -

tinue the road test.

→ D4 and apply the engine brake?

Cruise Test - Part 3 ACS002BE

Cruise test Part 3

1. MANUAL MODE FUNCTION

Move to manual mode from D position. Does it switch to manual mode?

Yes >> GO TO 2. No > > Continue road test and add checkmark to “C annot be change d to manual mode” on d iagnostics

worksheet.

2. CHECK SHIFT-DOWN

During manual mode driving, is downshift from 5

With CONSULT-II

Read the gear position. Is downshifting correctly performed?

Yes >> GO TO 3. No >> Enter a check mark at “Vehicle does not shift” at the corresponding position (5th → 4th, 4th → 3rd,

3rd → 2nd, 2nd → 1st) on the diagno s tic s work sheet, then continue the road test .

→ 4M → 3M → 2M → 1M performed?

Revision; 2004 April 2003 G35 Coupe

AT-58

Page 72

TROUBLE DIAGNOSIS

3. CHECK ENGINE BRAKE

Does engine braking effectively reduce speed in M1 position?

Yes >> 1. Stop the vehicle.

2. Carry out the self-diagnostics. Refer to AT-86, "

CONSULT-II)" , AT-96, "Diagnostic Procedure Without CO NSULT-II" .

No >> Enter a check mark at “Vehicle does not decelerate by engine brake” on the diagnostics work-

sheet, then continue trouble diagnosis.

Vehicle Speed When Shifting Gears ACS002BF

Throttle position

Full throttle

Half throttle

● At half throttle, the accelerator opening is 4/8 of the full opening.

1 →D2 D2 →D3 D3 →D4 D4 →D5 D5 →D4 D4 →D3 D3 →D2 D2 →D1

58 - 62

(36 - 39)

46 - 50

(29 - 31)

90 - 98

(56 - 61)

71 - 79

(44 - 49)

140 - 150

(87 - 93)

107 - 117

(66 - 73)

Vehicle speed km/h (MPH)

201 - 211

(125 - 131)

135 - 145

(84 - 90)

Vehicle Speed When Performing and Releasing Complete Lock-Up ACS002BG

Throttle position

Closed throttle 56 - 64 (35 - 40) 53 - 61 (33 - 38) Half throttle 168 - 176 (104 - 109) 13 1 - 139 ( 81 - 86)

● At closed throttle, the accelerator opening is less than 1/8 condition.

● At half throttle, the accelerator opening is 4/8 of the full opening.

Lock-up “ON” Lock-up “OFF”

SELF-DIAGNOSTIC PROCEDURE (WITH

197 - 207

(122 - 129)

88 - 98

(55 - 61)

Vehicle speed km/h (MPH)

122 - 132

(76 - 83)

63 - 73

(39 - 45)

74 - 82

(46 - 51)

29 - 37

(18 - 23)

34 - 48

(23 - 25)

11 - 15

(7 - 9)

Vehicle Speed When Performing and Releasing Slip Lock-Up ACS002BH

Throttle position Gear posi t ion

Closed throttle

● At closed throttle, the accelerator opening is less than 1/8 condition.

4th 37 - 45 (23 - 28) 34 - 42 (21 - 26) 5th 44 - 52 (27 - 32) 41 - 49 (25 - 30)

Slip lock-up “ON” Slip lock-up “OFF”

Vehicle speed km/h (MPH)

Revision; 2004 April 2003 G35 Coupe

AT-59

Page 73

TROUBLE DIAGNOSIS

Symptom Chart ACS002BI

The diagnostics item numbers show the sequence for inspection. Inspect in order from Item 1.

Symptom Condition Diagnostic Item Reference page

, AT-157

AT-319

AT-350

AT-349

Shift point is high in D position.

Shift point is low in D position.

Large shock. (“N” →“ D” position) Refer to AT-246,

"Large Shock (“N” to “D” Position)" .

Shock is too large when changing D → D

2 or M1 → M2

Shock is too large when changing D

3 or M2 → M3

→ D .

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

1. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110

2. Accelerator pedal position sensor AT-144

3. CAN communication line AT-98

4. ATF temperature sensor AT-146

5. Control valve assembly AT-294

1. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110

2. Accelerator pedal position sensor AT-144

3. CAN communication line AT-98

4. Control valve assembly AT-294

1. Engine idle speed EC-34

2. Engine speed signal AT-115

3. Accelerator pedal position sensor AT-144

4. Control linkage adjustment AT-284

5. ATF temperature sensor AT-146

6. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

7. CAN communication line AT-98

8. Fluid level and state AT-50

9. Line pressure test AT-51

10. Control valve assembly AT-294

11. Forward brake* (ATF con dition “NG ” only. Refer to AT-5 0, "

dition Check" .)

1. Accelerator pedal position sensor AT-144

2. Control linkage adjustment AT-284

3. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

4. CAN communication line AT-98

5. Engine speed signal AT-115

6. Turbine revolution sensor AT-152

7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

8. Fluid level and state AT-50

9. Control valve assembly AT-294

10. Direct clutch (ATF condition “NG” only. Refer to AT-50, "

tion Check" .)

1. Accelerator pedal position sensor AT-144

2. Control linkage adjustment AT-284

3. ATF pressure switch 6, high and low reverse clutch solenoid valve AT-233, AT-198

4. CAN communication line AT-98

5. Engine speed signal AT-115

6. Turbine revolution sensor AT-152

7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

8. Fluid level and state AT-50

9. Control valve assembly AT-294

10. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

Fluid Con-

Fluid Condi-

Revision; 2004 April 2003 G35 Coupe

AT-60

Page 74

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Accelerator pedal position sensor AT-144

2. Control linkage adjustment AT-284

3. ATF pressure switch 3 and input clutch solenoid valve AT-225, AT-170

4. CAN communication line AT-98

Shock is too large when changing D → D

4 or M3 → M4 .

Shock is too large when changing D

5 or M4 → M5 .

→ D

Shock is too large for downshift when accelerator pedal is pressed.

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

5. Engine speed signal AT-115

6. Turbine revolution sensor AT-152

7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

8. Fluid level and state AT-50

9. Control valve assembly AT-294

10. Input clutch (ATF condition “NG” only. Refer to AT-50, "

tion Check" .)

1. Accelerator pedal position sensor AT-144

2. Control linkage adjustment AT-284

3. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

4. CAN communication line AT-98

5. Engine speed signal AT-115

6. Turbine revolution sensor AT-152

7. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

8. Fluid level and state AT-50

9. Control valve assembly AT-294

10. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

11. Input clutch (ATF condition “NG” only. Refer toAT-50, "Fluid Condition

Check" .)

1. Accelerator pedal position sensor AT-144

2. Control linkage adjustment AT-284

3. CAN communication line AT-98

4. Engine speed signal AT-115

5. Turbine revolution sensor AT-152

6. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

7. Fluid level and state AT-50

8. Control valve assembly AT-294

9. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

10. Input clutch (ATF condition “NG” only. Refer toA T-50, "Fluid Condition

Check" .)

11. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

12. Direct clutch (ATF condition “NG” only. Refer toAT-50, "Fluid Condi-

tion Check" .)

Fluid Condi-

AT-339

AT-311

AT-339

AT-311

AT-339

AT-349

AT-350

Revision; 2004 April 2003 G35 Coupe

AT-61

Page 75

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Accelerator pedal position sensor AT-144

2. Control linkage adjustment AT-284

3. Engine speed signal AT-115

4. CAN communication line AT-98

5. Turbine revolution sensor AT-152

6. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

7. Fluid level and state AT-50

8. Control valve assembly AT-294

9. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

10. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. High and low reverse clutch (ATF condition “NG” only. Refer toAT-50,

"Fluid Condition Check" .)

12. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

1. Accelerator pedal position sensor AT-144

2. Control linkage adjustment AT-284

3. Engine speed signal AT-115

4. CAN communication line AT-98

5. Turbine revolution sensor AT-152

6. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

7. To r que converter clutch solenoid valve AT-117

8. Fluid level and state AT-50

9. Control valve assembly AT-294

10. Torque converter (ATF condition “NG” only. Refer to AT-50, "

Condition Check" .)

1. Accelerator pedal position sensor AT-144

2. Control linkage adjustment AT-284

3. CAN communication line AT-98

4. Fluid level and state AT-50

5. Control valve assembly AT-294

6. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

7. Input clutch (ATF condition “NG” only. Refer toAT-50, "Fluid Condition

Check" .)

8. High and low reverse clutch (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

9. Direct clutch (ATF condition “NG” only. Refer toAT-50, "Fluid Co ndi t io n

Check" .)

Fluid

Shock is too large for upshift when accelerator pedal is released.

Shock is too large for lock-up.

Shock is too large during engine brake.

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

AT-311

AT-339

AT-349

AT-350

AT-319

AT-311

AT-339

AT-349

AT-350

Revision; 2004 April 2003 G35 Coupe

AT-62

Page 76

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Fluid level and state AT-50

2. Engine speed signal AT-115

3. Turbine revolution sensor AT-152

4. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

5. Accelerator pedal position sensor AT-144

6. CAN communication line AT-98

7. Torque converter clutch solenoid val ve AT-117

8. Control valve assembly AT-294

9. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

1. Fluid level and state AT-50

2. Engine speed signal AT-115

3. CAN communication line AT-98

4. Control valve assembly AT-294

5. Torque converter (ATF condition “NG” only. Refer toAT- 50, "Fluid Con-

dition Check" .)

6. Oil pump assembly (ATF condition “NG” only. Refer toAT- 50, "Fluid

Condition Check" .)

7. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

8. High and low reverse clutch (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

9. Reverse brake (ATF condition “NG” only. Refer toAT-50, "Fluid Condi-

tion Check" .)

1. Fluid level and state AT-50

2. Engine speed signal AT-115

3. CAN communication line AT-98

4. Control valve assembly AT-294

5. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

6. Oil pump assembly (ATF condition “NG” only. Refer toAT- 50, "Fluid

Condition Check" .)

7. Gear system (ATF condition “NG” only. Refer toAT -50, "Fluid Condition

Check" .)

1. Fluid level and state AT-50

2. Engine speed signal AT-115

3. CAN communication line AT-98

4. Control valve assembly AT-294

5. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

6. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

7. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

8. Forward brake* (ATF condition “NG” only . Refer toAT-50, "Fluid Condi-

tion Check" .)

Fluid Con-

Judder occurs during lock-up.

Strange noise in “R” position.

Strange noise in “N” position.

Strange noise in “D” position.

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

AT-319

AT-334

AT-311

AT-349

AT-319

AT-334

AT-311

AT-319

AT-334

AT-311

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-63

Page 77

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

ON vehicle

When D or M position, remains in 1st gear.

OFF vehicle

ON vehicle

When D or M position, remains in 2nd gear.

OFF vehicle

ON vehicle

When D or M position, remains in 3rd gear.

OFF vehicle

3. Direct clutch solenoid valve AT-189

4. Line pressure test AT-51

5. CAN communication line AT-98

6. Control valve assembly AT-294

7. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "

Condition Check" .)

8. 1st one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

10. Reverse brake (ATF condition “NG” only. Refer toAT-50, "Flui d C on di -

tion Check" .)

11. Forward one-way clutch* (ATF condition “NG” only. Refer toAT-50,

"Fluid Condition Check" .)

12. Forward brake* (ATF condition “NG” only. Refer toAT-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110 , AT-157

3. Low coast brake solenoid valve AT-208

4. Line pressure test AT-51

5. CAN communication line AT-98

6. Control valve assembly AT-294

7. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "

Condition Check" .)

8. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

9. Direct clutch (ATF condition “NG” only. Refer to A T-50, "Fluid Condition

Check" .)

10. Forward brake* (ATF condition “NG” only. Refer toAT-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. Line pressure test AT-51

4. CAN communication line AT-98

5. Control valve assembly AT-294

6. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

7. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

8. High and low reverse clutch (ATF condition “NG” only. Refer toAT-50,

"Fluid Condition Check" .)

9. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

10. Forward brake* (ATF condition “NG” only. Refer toAT-50, "Fluid Con-

dition Check" .)

Fluid

AT-336

AT-344

AT-311

AT-319

AT-336

AT-311

AT-350

AT-319

AT-336

AT-311

AT-349

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-64

Page 78

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 3 and input clutch solenoid valve AT-225, AT-170

4. ATF pressure switch 5 and direct clutch solenoid valve AT-229,AT-189

ON vehicle

When D or M position, remains in 4th gear.

OFF vehicle

ON vehicle

When D or M position, remains in 5th gear.

OFF vehicle

5. ATF pressure switch 6, high and low reverse clutch solenoid valve AT-233

6. Low coast brake solenoid valve AT-208

7. Front brake solenoid valve AT-179

8. Line pressure test AT-51

9. CAN communication line AT-98

10. Contro l valve assembly AT-294

11. Input clutch (ATF condition “NG” only. Refer to AT -50, "

Check" .)

12. Gear system (ATF condition “NG” only. Refer toAT-50, "Fluid Condi-

tion Check" .)

13. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

14. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid C ondi-

tion Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 1 and front brake solenoid valve AT-221

4. Line pressure test AT-51

5. CAN communication line AT-98

6. Control valve assembly AT-294

7. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

8. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

9. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

10. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

Fluid Condition

, AT-198

AT-339

AT-311

AT-349

AT-350

, AT-179

AT-319

AT-339

AT-311

AT-349

Revision; 2004 April 2003 G35 Coupe

AT-65

Page 79

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Fluid level and state AT-50

2. Accelerator pedal position sensor AT-144

3. Line pressure test AT-51

4. CAN communication line AT-98

5. Control valve assembly AT-294

6. Torque converter (ATF condition “NG” only. Refer to AT-50, "

Fluid Con-

dition Check" .)

7. Oil pump assembly (ATF condition “NG” only. Refer toAT-50, "Fluid

Condition Check" .)

8. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. 1st one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. Reverse brake (AT F condit ion “NG ” only. Refer to AT-50, "Fluid Con-

dition Check" .)

12. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

13. Forward brake* (ATF condition “NG” only. Refer toAT-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

4. Line pressure test AT-51

5. CAN communication line AT-98

6. Control valve assembly AT-294

7. Direct clutch (ATF condition “NG” only. Refer to A T-50, "

Fluid Condition

Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 6, high and low reverse clutch solenoid valve AT-233, AT-198

4. Line pressure test AT-51

5. CAN communication line AT-98

6. Control valve assembly AT-294

7. High and low reverse clutch (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 3 and input clutch solenoid valve AT-225, AT-170

4. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

5. Line pressure test AT-51

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Input clutch (ATF condition “NG” only. Refer to AT-50, "

Fluid Condition

Check" .)

Vehicle cannot be started from D

1 .

Refer toAT-255,

"Vehicle Cannot Be Started From D1" .

Gear does not change from D

2 or from M1 →

D M

2 .

Refer to A T-257, "

1 →

A/ T Does Not Shift: D1 → D2" .

Gear does not change from D D

3 or from M2 → 3 .

M Refer toAT-259, "

2 →

A/ T Does Not Shift: D2 → D3" .

Gear does not change from D D

4 or from M3 → 4 .

M Refer toAT-262, "

3 →

A/ T Does Not Shift: D3 → D4" .

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

AT-319

AT-334

AT-336

AT-344

AT-311

AT-319

AT-350

AT-349

AT-339

Revision; 2004 April 2003 G35 Coupe

AT-66

Page 80

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

Gear does not change from D D

5 or from M4 → 5 .

M Refer toAT-264, "

T Does Not Shift: D4 → D5" .

In D or M range, does not downshift to 4th gear. Refer to AT-273, "

T Does Not Shift: 5th Gear → 4th Gear" .

In D or M range, does not downshift to 3rd gear. Refer toAT-275, "

T Does Not Shift: 4th Gear → 3rd Gear" .

In D or M range, does not downshift to 2nd gear. Refer toAT-277, "

T Does Not Shift: 3rd Gear → 2nd Gear" .

4 →

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

4. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

5. Turbine revolution sensor AT-152

6. Line pressure test AT-51

7. CAN communication line AT-98

8. Control valve assembly AT-294

9. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

10. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 1 and front brake solenoid valve AT-221

4. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

5. CAN communication line AT-98

6. Line pressure test AT-51

7. Control valve assembly AT-294

8. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

9. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 3 and input clutch solenoid valve AT-225, AT-170

4. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

5. CAN communication line AT-98

6. Line pressure test AT-51

7. Control valve assembly AT-294

8. Input clutch (ATF condition “NG” only. Refer toAT-50, "

Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 6, high and low reverse clutch solenoid valve AT-233

4. CAN communication line AT-98

5. Line pressure test AT-51

6. Control valve assembly AT-294

7. High and low reverse clutch (ATF condition “NG” only. Refer toAT-50,

"Fluid Condition Check" .)

Fluid Condition

AT-319

AT-339

, AT-179

AT-319

AT-339

, AT-198

AT-349

Revision; 2004 April 2003 G35 Coupe

AT-67

Page 81

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Fluid level and state AT-50

In D or M range, does not downshift to 1st gear. Refer toAT-279, "

T Does Not Shift: 2nd Gear → 1st Gear" .

Does not lock-up. Refer to A T-266, "

T Does Not Perform Lock-Up" .

Does not hold lockup condition. Refer toAT-269, "A/

T Does Not Hold Lock-Up Condition" .

Lock-up is not released. Refer toAT-270,

"Lock-Up Is Not Released" .

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

4. CAN communication line AT-98

5. Line pressure test AT-51

6. Control valve assembly AT-294

7. Direct clutch (ATF condition “NG” only. Refer to A T-50, "

Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Engine speed signal AT-115

4. Turbine revolution sensor AT-152

5. To r que converter clutch solenoid valve AT-117

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Tor que converter (ATF condition “NG” only. Refer toAT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer toAT-50, "Fluid

Condition Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Engine speed signal AT-115

4. Turbine revolution sensor AT-152

5. To r que converter clutch solenoid valve AT-117

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Engine speed signal AT-115

4. Turbine revolution sensor AT-152

5. To r que converter clutch solenoid valve AT-117

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

Fluid Condition

Fluid Con-

AT-350

AT-319

AT-334

AT-319

AT-334

AT-319

AT-334

Revision; 2004 April 2003 G35 Coupe

AT-68

Page 82

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

Does not change M5 → M4.

Does not change M4 → M3.

Does not change M3 → M2.

Does not change M2 → M1.

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

4. Manual mode switch AT-217

5. ATF pressure switch 1 AT-221

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

4. Manual mode switch AT-217

5. ATF pressure switch 1 and ATF pressure switch 3 AT-221, AT-225

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

9. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

4. Manual mode switch AT-217

5. ATF pressure switch 6 AT-233

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

9. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

10. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

4. Manual mode switch AT-217

5. ATF pressure switch 5 AT-229

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Input clutch (ATF condition “NG” only. Refer to AT-50, "

Check" .)

9. High and low reverse clutch (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

10. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid C ondi-

tion Check" .)

Fluid Condition

AT-319

AT-339

AT-319

AT-339

AT-349

AT-339

AT-349

AT-350

Revision; 2004 April 2003 G35 Coupe

AT-69

Page 83

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

4. CAN communication line AT-98

5. Line pressure test AT-51

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

8. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. Direct clutch (ATF conditi on “NG ” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. Forward brake* (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 6, high and low reverse clutch solenoid valve AT-233, AT-198

4. CAN communication line AT-98

5. Line pressure test AT-51

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

8. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. High and low reverse clutch (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

12. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

13. Forward brake* (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

Fluid Con-

No shock at all or the clut ch slips when vehicle changes speed D

2 or M1 → M2 .

→ D

No shock at all or the clut ch slips when vehicle changes speed D → D

3 or M2 → M3 .

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

AT-319

AT-334

AT-336

AT-311

AT-350

AT-319

AT-334

AT-336

AT-311

AT-349

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-70

Page 84

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 3 and input clutch solenoid valve AT-225, AT-170

No shock at all or the clutch slips when vehicle changes speed D

4 or M3 → M4 .

→ D

No shock at all or the clutch slips when vehicle changes speed D

5 or M4 → M5 .

→ D

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

4. ATF pressure switch 1 and front brake solenoid valve AT-221

5. CAN communication line AT-98

6. Line pressure test AT-51

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

13. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid C ondi-

tion Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

4. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

5. CAN communication line AT-98

6. Line pressure test AT-51

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

11. Input clutch (ATF condition “NG” only. Refer to AT -50, "Fluid Condition

Check" .)

12. Gear system (ATF condition “NG” only. Refer to AT-5 0, "Fluid Condi-

tion Check" .)

13. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

Fluid Con-

, AT-179

AT-319

AT-334

AT-339

AT-311

AT-349

AT-350

AT-319

AT-334

AT-319

AT-339

AT-311

AT-349

Revision; 2004 April 2003 G35 Coupe

AT-71

Page 85

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

4. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

5. CAN communication line AT-98

6. Line pressure test AT-51

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. Gear system (ATF condit io n “NG ” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

13. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 3 and input clutch solenoid valve AT-225, AT-170

4. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

5. CAN communication line AT-98

6. Line pressure test AT-51

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

11. Gear system (ATF condit io n “NG ” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

13. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

14. Forward brake* (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

Fluid Con-

When you press the acce l erator pedal and shift speed D M engine idles or the transmission slips.

5 → D4 or

5 → M4 the

4 → D3 or

4 → M3 the

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

AT-319

AT-334

AT-339

AT-311

AT-349

AT-350

AT-319

AT-334

AT-336

AT-311

AT-349

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-72

Page 86

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 6, high and low reverse clutch solenoid valve AT-233, AT-198

4. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

5. CAN communication line AT-98

6. Line pressure test AT-51

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

11. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid C ondi-

tion Check" .)

13. Forward brake* (ATF condition “NG” only. Refer to A T-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

3. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

4. CAN communication line AT-98

5. Line pressure test AT-51

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

8. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. 3rd one-way clutch (ATF condition “NG” only. Refer to AT- 50, "Fluid

Condition Check" .)

10. 1st one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

11. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. Reverse brake (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

13. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

14. Forward brake* (ATF condition “NG” only. Refer to A T-50, "Fluid Con-

dition Check" .)

Fluid Con-

When you press the accelerator pedal and shift speed D M engine idles or the transmission slips.

3 → D2 or

3 → M2 the

2 → D1 or

2 → M1 the

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

AT-319

AT-334

AT-336

AT-311

AT-350

AT-319

AT-334

AT-336

AT-344

AT-311

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-73

Page 87

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

Vehicle dose not decelerate by engine brake. Refer to AT-281,

"Vehicle Does Not Decelerate By Engine Brake" .

Engine brake does not work M5 → M4.

Engine brake does not work M4 → M3.

Engine brake does not work M3 → M2.

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

4. Manual mode switch AT-217

5. ATF pressure switch 5 AT-229

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Input clutch (ATF condition “NG” only. Refer to AT-50, "

Check" .)

9. High and low reverse clutch (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

10. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

4. Manual mode switch AT-217

5. ATF pressure switch 1 AT-221

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

4. Manual mode switch AT-217

5. ATF pressure switch 1 and ATF pr ess ure switch 3 AT-221, AT-225

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

9. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

4. Manual mode switch AT-217

5. ATF pressure switch 6 AT-233

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

9. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

10. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

Fluid Condition

AT-339

AT-349

AT-350

AT-319

AT-339

AT-319

AT-339

AT-349

Revision; 2004 April 2003 G35 Coupe

AT-74

Page 88

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

ON vehicle

Engine brake does not work M2 → M1.

OFF vehicle

ON vehicle

With selector lever in D position, acceleration is extremely poor.

OFF vehicle

ON vehicle

With selector lever in R position, acceleration is extremely poor.

OFF vehicle

4. Manual mode switch AT-217

5. ATF pressure switch 5 AT-229

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Input clutch (ATF condition “NG” only. Refer to AT-50, "

Check" .)

9. High and low reverse clutch (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

10. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid C ondi-

tion Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Accelerator pedal position sensor AT-144

4. CAN communication line AT-98

5. PNP switch AT-105

6. Control linkage adjustment AT-284

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only . Refer to AT-50, "Fluid Con-

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. 1st one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

11. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. Reverse brake (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

13. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

14. Forward brake* (ATF condition “NG” only. Refer to A T-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Accelerator pedal position sensor AT-144

4. ATF pressure switch 6, high and low reverse clutch solenoid valve AT-233, AT-198

5. CAN communication line AT-98

6. PNP switch AT-105

7. Control linkage adjustment AT-284

8. Control valve assembly AT-294

9. Gear system (ATF condition “NG” only. Refer to AT-50, "

tion Check" .)

10. Output shaft (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. Reverse brake (ATF condition “NG” only . Refer to AT-50, "Fluid Con-

dition Check" .)

Fluid Condition

Fluid Condi-

AT-339

AT-349

AT-350

AT-319

AT-334

AT-344

AT-311

AT-319

AT-311

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-75

Page 89

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Fluid level and state AT-50

2. Line pressure test AT-51

ON vehicle

While starting off by accelerating in 1st, engine races or slippage occurs.

OFF vehicle

ON vehicle

While accelerating in 2nd, engine races or slippage occurs.

OFF vehicle

3. Accelerator pedal position sensor AT-144

4. CAN communication line AT-98

5. Control valve assembly AT-294

6. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

7. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

8. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. 1st one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. Reverse brake (AT F condit ion “NG ” only. Refer to AT-50, "Fluid Con-

dition Check" .)

12. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

13. Forward brake* (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Accelerator pedal position sensor AT-144

4. CAN communication line AT-98

5. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

8. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. 3rd one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

10. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. Direct clutch (ATF conditi on “NG ” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. Forward brake* (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

Fluid Con-

AT-319

AT-334

AT-336

AT-344

AT-311

AT-319

AT-334

AT-336

AT-311

AT-350

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-76

Page 90

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Fluid level and state AT-50

2. Line pressure test AT-51

ON vehicle

While accelerating in 3rd, engine races or slippage occurs.

OFF vehicle

ON vehicle

While accelerating in 4th, engine races or slippage occurs.

OFF vehicle

3. Accelerator pedal position sensor AT-144

4. CAN communication line AT-98

5. ATF pressure switch 6, high and low reverse clutch solenoid valve AT-233, AT-198

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only . Refer to AT-50, "Fluid Con-

dition Check" .)

8. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. 3rd one-way clutch (ATF condition “NG” only. Refer toAT-50, "Fluid

Condition Check" .)

10. Gear system (ATF condition “NG” only. Refer to AT-5 0, "Fluid Condi-

tion Check" .)

11. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

12. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

13. Forward brake* (ATF condition “NG” only. Refer to A T-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Accelerator pedal position sensor AT-144

4. CAN communication line AT-98

5. ATF pressure switch 3 and input clutch solenoid valve AT-225, AT-170

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

8. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

10. Gear system (ATF condition “NG” only. Refer to AT-5 0, "Fluid Condi-

tion Check" .)

11. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

12. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid C ondi-

tion Check" .)

Fluid Con-

AT-319

AT-334

AT-336

AT-311

AT-349

AT-319

AT-334

AT-339

AT-311

AT-349

AT-350

Revision; 2004 April 2003 G35 Coupe

AT-77

Page 91

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Fluid level and state AT-50

2. Line pressure test AT-51

ON vehicle

While acce l erating in 5th, engine races or slippage occurs.

OFF vehicle

ON vehicle

Slips at lock-up.

OFF vehicle

3. Accelerator pedal position sensor AT-144

4. CAN communication line AT-98

5. ATF pressure switch 1 and front brake solenoid valve AT-221, AT-179

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

8. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

10. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

11. Gear system (ATF condit io n “NG ” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

12. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Engine speed signal AT-115

4. Turbine revolution sensor AT-152

5. To r que converter clutch solenoid valve AT-117

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

9. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

Fluid Con-

AT-319

AT-334

AT-319

AT-339

AT-311

AT-349

AT-319

AT-334

Revision; 2004 April 2003 G35 Coupe

AT-78

Page 92

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Fluid level and state AT-50

2. Line pressure test AT-51

ON vehicle

Maximum speed low.

OFF vehicle

ON vehicle

No creep at all. Refer toAT-249,

"Ve hicle Does No t Creep Backward In “R” Position" , AT251, "Vehicle Does Not Creep Forward In “D” Position"

OFF vehicle

3. Accelerator pedal position sensor AT-144

4. CAN communication line AT-98

5. Direct clutch solenoid valve AT-189

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

8. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. Input clutch (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

10. Gear system (ATF condition “NG” only. Refer to AT-5 0, "Fluid Condi-

tion Check" .)

11. High and low reverse clutch (ATF condition “NG” only . Refer to AT-50,

"Fluid Condition Check" .)

12. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid C ondi-

tion Check" .)

13. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

14. Forward brake* (ATF condition “NG” only. Refer to A T-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. Accelerator pedal position sensor AT-144

4. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

5. PNP switch AT-105

6. CAN communication line AT-98

7. Control linkage adjustment AT-284

8. Control valve assembly AT-294

9. Torque converter (ATF condition “NG” only . Refer to AT-50, "

dition Check" .)

10. Oil pump assembly (ATF condition “NG” only. Refer to AT- 50, "Fluid

Condition Check" .)

11. 1st one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

12. Gear system (ATF condition “NG” only. Refer to AT-5 0, "Fluid Condi-

tion Check" .)

13. Reverse brake (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

14. Direct clutch (ATF condition “NG” only. Refer to AT-50, "Fluid C ondi-

tion Check" .)

15. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

16. Forward brake* (ATF condition “NG” only. Refer to A T-50, "Fluid Con-

dition Check" .)

Fluid Con-

AT-319

AT-334

AT-339

AT-311

AT-349

AT-350

AT-319

AT-334

AT-344

AT-311

AT-319

AT-350

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-79

Page 93

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

1. Engine idle speed EC-34

Extremely large creep.

With selector lever in P position, vehicle does not enter parking condition or, with selector lever in another position, parking condition is not cancelled. Refer to AT- 243, "

“P” Position, Vehicle Moves When Pushed" .

Vehicle runs with transmission in “ P” position.

Vehicle runs with transmission in “N” position. Refer to AT- 245, "

“N” Position, Vehicle Moves" .

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

2. CAN communication line AT-98

3. ATF pressure switch 5 AT-229

4. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

1. PNP switch AT-105

2. Control linkage adjustment AT-284

3. Parking pawl components (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

4. Control valve assembly AT-294

5. Parking pawl components (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

6. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

1. PNP switch AT-105

2. Fluid level and state AT-50

3. Control linkage adjustment AT-284

4. Control valve assembly AT-294

5. Input clutch (ATF condition “NG” only. Refer to AT-50, "

Check" .)

6. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

7. Direct clutch (ATF condition “NG” only. Refer to A T-50, "Fluid Condition

Check" .)

8. Reverse brake (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

9. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

10. Low coast brake* (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

Fluid Con-

Fluid Condition

AT-319

AT-311

AT-339

AT-311

AT-350

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-80

Page 94

TROUBLE DIAGNOSIS

Symptom Condition D ia gnostic Item Reference page

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. PNP switch AT-105

4. Control linkage adjustment AT-284

5. Control valve assembly AT-294

6. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "

Condition Check" .)

7. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

8. Output shaft (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. PNP switch AT-105

4. Control linkage adjustment AT-284

5. Control valve assembly AT-294

6. Torque converter (ATF condition “NG” only . Refer to AT-50, "Fluid Con-

dition Check" .)

7. Oil pump assembly (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

8. 1st one-way clutch (ATF condition “NG” only. Refer to AT-50, "Fluid

Condition Check" .)

9. Gear system (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

10. Reverse brake (ATF condition “NG” only. Refer to AT-50, "Fluid Con-

dition Check" .)

11. Forward one-way clutch* (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)

12. Forward brake* (ATF condition “NG” only. Refer to A T-50, "Fluid Con-

dition Check" .)

1. Fluid level and state AT-50

2. Line pressure test AT-51

3. PNP switch AT-105

4. Control linkage adjustment AT-284

5. Control valve assembly AT-294

6. Gear system (ATF condition “NG” only. Refer to AT-50, "

tion Check" .)

7. Output shaft (ATF condition “NG” only. Refer to AT-50, "Fluid Condition

Check" .)

8. Reverse brake (ATF condition “NG” only. Refer to AT-50, "Fluid Condi-

tion Check" .)

1. Manual mode switch AT-217

2. Turbine revolution sensor AT-152

3. CAN communication line AT-98

Fluid

Fluid Condi-

Vehicle cannot run in all positions.

With selector lever in D position, driving is not possible.

With selector lever in R position, driving is not possible.

Can not be changed to manual mode. Refer to AT-272,

"Cannot Be Changed to Manual Mode" .

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

AT-334

AT-311

AT-319

AT-334

AT-344

AT-311

AT-319

AT-311

AT-319

Revision; 2004 April 2003 G35 Coupe

AT-81

Page 95

TROUBLE DIAGNOSIS

Symptom Condition Diagnostic Item Reference page

Engine does not start in “N” or “P” position. Refer to AT-243,

"Engine Cannot Be Started In “P” or “N” Position" .

Engine starts in positions other than “N” or “P”.

Engine stall.

Engine stalls when selector lever shifted “N” → “D”, “R”.

Engine speed does not return to idle. Refer to AT-271,

"Engine Speed Does Not Return T o Idle" .

*: Parts behind Drum Support is impossible to perform inspection by disassembly. Refer to AT-15, "Cross-Sectional View" .

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

ON vehicle

OFF vehicle

1. Ignition switch and starter PG-4

2. Control linkage adjustment AT-284

3. PNP switch AT-105

1. Ignition switch and starter PG-4, SC-10

2. Control linkage adjustment AT-284

3. PNP switch AT-105

1. Fluid level and state AT-50

2. Engine speed signal AT-115

3. Turbine revolution sensor AT-152

4. To r que converter clutch solenoid valve AT-117

5. CAN communication line AT-98

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

1. Fluid level and state AT-50

2. Engine speed signal AT-115

3. Turbine revolution sensor AT-152

4. To r que converter clutch solenoid valve AT-117

5. CAN communication line AT-98

6. Control valve assembly AT-294

7. Torque converter (ATF condition “NG” only. Refer to AT-50, "

dition Check" .)

1. Fluid level and state AT-50

2. ATF pressure switch 5 and direct clutch solenoid valve AT-229, AT-189

3. ATF pressure switch 1 and front brake solenoid valve AT-221

4. Accelerator pedal position sensor AT-144

5. Vehicle speed sensor A/T and vehicle speed sensor MTR AT-110, AT-157

6. CAN communication line AT-98

7. Control valve assembly AT-294

8. Front brake [brake band (ATF condition “NG” only. Refer to AT-50,

"Fluid Condition Check" .)]

9. Direct clutch (ATF condition “NG” only. Refer to A T-50, "Fluid Condition

Check" .)

Fluid Con-

, SC-10

AT-319

, AT-179

AT-319

AT-350

Revision; 2004 April 2003 G35 Coupe

AT-82

Page 96

TROUBLE DIAGNOSIS

TCM Input/Output Signal Reference Values ACS002BJ

TCM TERMINAL CONNECTOR LAYOUT

SCIA0495E

TCM INSPECTION TABLE

Data are reference value. Measured between each terminals 5, 14, 24 and 46 (TCM ground).

T erminal

No.

1B/R

2 W Power supply

3 W Power supply

4P/L 5 B Ground – – –

6 L CAN H – – – 7 R CAN L – – –

8B/OR

9R/W

10 O/R

11 R/L

Wire color

Line pressure solenoid valve

SEL3 (pressure switch 3)

Fluid temperature sensor 1

Power supply (Memory back-up)

Input clutch solenoid valve

High and low reverse clutch solenoid valve

Item C ondition Data (Approx.)

After warming up the engine, release your foot from the accelerator pedal.

After warming up the engine, press the accelera to r peda l all the way down.

– Battery voltage

Measure 3 seconds after switching “OFF” the igni tion switch.

– Battery voltage

Measure 3 seconds after switching “OFF” the igni tion switch.

–– –

When ATF temperature 0°C (32°F) 2.2V When ATF temperature 20°C (68°F) 1.8V When ATF temperature 80°C (176°F) 0. 6V

Always Battery voltage

When the solenoid valve operating (in 1st gear, 2nd gear, or 3rd gear)

When vehicle cruises

When the solenoid valve is not operating (4th ge ar or 5th gear)

When the solenoid valve operating [6 km/ h (4MPH ) or faster in 1st gear or 2nd gear]

When the solenoid valve is not operating [6 km/h (4MPH)or slower in 1st gear or 3rd, 4th, or 5th gear]

0.7V

More than 2V

Revision; 2004 April 2003 G35 Coupe

AT-83

Page 97

TROUBLE DIAGNOSIS

T erminal

No.

12 Y/R

13 W/L

14 B Ground – – – 15 B/W SEL4 – – –

16 W/G

17 G/R

19 R/B

20 Y

21 G

22 P/B

23 LG 24 B Ground – – –

26 G/Y

27 Y/B

30 R/W PNP switch 1

31 OR PNP switc h 2

Wire

color

Item C ondition Data (Approx.)

– Battery voltage

Power supply (out)

–0V

When the solenoid valve is operating (when run nin g in M1-1 gear or M2-2 gear)

When the solenoid valve is not operating (when runn ing in “D”)

When ATF temperature about 0°C (32°F) 2.2V When ATF temperature about 20°C (68°F) 1.7V When ATF temperature about 80°C (176°F) 0.45V When the solenoid valve is operating (other than 4t h

gear) When the solenoid valve is not operating (4th gear) 0V When lock-up More than 2V When not lock-up 0V When the solenoid valve is operating (1st gear or 5th

gear) When the solenoid valve is not operating (2nd gear, 3rd

gear, or 4th gear)

When high and low reverse clutch solenoid va lve “ON ”. 0V When high and low reverse clutch solenoid va lve “OFF” . Battery voltage When moving at 20 km/h (12MPH), use the CON SU LT-II

pulse frequency measuring functio n.

CAUTION:

Connect the data link connector to the vehicle-side diagnosis connector.

Selector lever in “P” position. Battery voltage Selector lever in “N” position. Less than 2.5V Selector lever in “P” position. Battery voltage Selector lever in “D” position. Less than 2.5V

Low coast brake solenoid valve

SEL1 (pressure switch 2)

Fluid temperature sensor 2

Front brake solenoid valve

TCC solenoid valve

Direct clutch solenoid valve

SEL2 (pressure switch 5)

K-line ( C ONSULTII signal)

PSC2 (pressure switch 6)

Vehicle speed sensor A/T (revolution sensor)

When vehicle cruises

–– –

When vehicle cruises

–– –

The terminal is connected to the data link connector for CONSU LT-II.

When vehicle cruises

Battery voltage

More than 2V

185 (Hz)

– Battery voltage

33 Y/R Power supply

–0V

Revision; 2004 April 2003 G35 Coupe

AT-84

Page 98

TROUBLE DIAGNOSIS

T erminal

No.

35 B/Y

36 L/Y

38 SB PNP switch 3

39 BR PNP switch 4

40 Y/G DATA BIT1 – – –

41 R

42 Y/R Power supply

Wire color

PSB2 (pressure switch 1)

Turbine revolution sensor 1

Back-up lamp relay

Item C ondition Data (Approx.)

When front brake solenoid valve “OFF”. Battery voltage When front brake solenoid valve“ ON”. 0V

When vehicle cruises

When running at 50 km/h (31MPH) in 4th gear with the closed throttle position signal “OFF”, use the CONSULT-II pulse frequency measuring function.

CAUTION:

Connect the data link connector to the vehicle-side diagnosis connector.

Selector lever in “D” position. Battery voltage Selector lever in “R” position. Less than 2.5V Selector lever in “D” position. Less than 2.5V Selector lever in “P” position. Battery voltage

Selector lever in “R” position. 0V Selector lever in other positions. Batte ry voltage

– Battery voltage

–0V

1.3 (kHz)

When moving at 20 km/h (12MPH) in 1st gear with the

45 PU

46 B Ground – – –

47 G/W

48 GY/R Starter relay

Turbine revolution sensor 2

PNP switch 3 (monitor)

When vehicle cruises

closed throttle position signal “OFF”, use the CONSULT-II pulse frequency measuring function.

CAUTION:

Connect the data link connector to the vehicle-side diagnosis connector.

Selector lever in “D” position. Battery voltage Selector lever in “R” position. Less than 2.5V Selector lever in “N” and “ P” positions. Battery voltage Selector lever in other positions. 0V

1.3 (kHz)

Revision; 2004 April 2003 G35 Coupe

AT-85

Page 99

TROUBLE DIAGNOSIS

CONSULT-II ACS002BK

After performing “SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)” (Refer to AT-86 ), place check marks for results on the AT - 4 5 , " items.

NOTICE:

1. The CONSUL T-II electrically dis play s shif t tim ing an d lock -up t imin g (that is, op era tio n timing of eac h sole noid). Check for time difference between actual shift timing and the CONSULT-II display. If the difference is noticeable, me chan ical parts (exc ept s olen oids , sens ors, e tc .) may be ma lfunc tion ing. C hec k me chan ical parts using applicab le diagnostic procedures.

2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Manual may differ slightly. This occurs because of the following reasons:

– Actual shift schedule has more or less tolerance or allowance, – Shift schedule indicated in Service Manual refers to the point where shifts start, and – Gear position displayed on CONSULT-II indicates the point where shifts are completed.

3. Display of solenoid valves on CONSULT-II cha nges at the start of shift i ng, wh il e ge ar p osi ti on is disp l aye d upon completion of shifting (which is computed by TCM).

4. Additional CONSULT-II information can be found in the Operation Manual supplied with the CONSULT-II unit.

FUNCTION

Diagnostic test mode Function Reference page Self-diagnostic results Se lf-d ia gnostic results can be read and erased quickly. AT-87 Data monitor Input/Output data in the ECM can be read. AT-90 CAN diagnostic support

monitor

Function test

DTC work support Select the operating condition to confirm Diagnosis Trouble Codes. AT-93 ECU (TCM) part number ECU (TCM) part number can be re ad. —

The results of transmit/receive diagnosis of CAN com m uni cation can be read. — Performed by CONSULT -II instead of a technician to determine whether each system is

“OK” or “NG”.

DIAGNOSTIC WORKSHEET" . Reference pag es are provide d following the

—

CONSULT-II REFERENCE VALUE

Item name Conditio n Displa y val ue (Approx.) ATF TEMP SE 1 ATF TEMP SE 2 2.2 - 1.7 - 0.45 V

TCC SOLENOID

0°C (32° F) - 20°C (68°F) - 80°C (176°F)

When perform slip lock-up 0.2 - 0.4 A When perform lock-up 0. 4 - 0.6 A

2.2 - 1.8 - 0.6 V

SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)

CONSULT-II Setting Procedure

● For details, refer to the separate “CONSULT-II Operations Man-

ual”.

1. Turn ignition switch “OFF”.

2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector, which is located in instrument lower panel on driver side.

PHIA0096E

Revision; 2004 April 2003 G35 Coupe

AT-86

Page 100

TROUBLE DIAGNOSIS

3. Turn ign ition switch “O N” (Do not start engine).

4. To uc h “START (NISSAN BASED VHCL)”.

5. Touch “ENGINE” for OBD-II detected items or touch “A/T” for TCM self-diagnos is . If “A/T” or “ENGINE” is n ot indi cated, go to GI-39, "

Data Link Connector (DLC) Circuit" .

CONSULT-II

SAIA0450E

SAT014K

6. Touch “SELF-DIAG RESULTS”. Display shows malfunction experienced since the last erasing operation. CONSULT-II performs REAL-TIME SELF-DIAGNOSIS. Also, any malfunction detected while in this mode will be displayed at real time.

Self-Diagnostic Result Test Mode

Items (CONSULT-

II screen terms)

CAN COMM CIRCUIT

STAR TER RELAY/ CIRC

PNP SW/CIRC

● When a malfunction is detected in C AN com mu nic at ions X U1000 U1000

● If this signal is ON other than in P or N position, this is

judged to be a malfunction. (And if it is OFF in P or N position, this too is judged to be a malfunction.)

● PNP switch 1-4 signals input with impossi ble pattern

● PNP switch 3 monitor terminal cut line

● P position is detected from N position without any ot her

position being detected in between.

Malfunction is detected when...

X: Applicable, —: Not applicable

TCM self-diagnosis OBD-II (DTC)

MIL indicator

A/T CHEC K

indicator

lamp

X P0615 —

X P0705 P0705

“A/T” with

CONSULT-II

“ENGINE” with CONSUL T-II or

SAT987J

lamp*1,

GST

Revision; 2004 April 2003 G35 Coupe

AT-87

Infiniti G35 Coupe 2004 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

QUICK REFERENCE INDEX

FOREWORD

INCH TO METRIC CONVERSION TABLE