wiring diagram INFINITI FX35 2004 User Guide

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AUTOMATIC TRANSMISSION
C TRANSMISSION/TRANSAXLE
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AUTOMATIC TRANSMISSION
INDEX FOR DTC ........................................................ 5
Alphabetical Index .................................................... 5
DTC No. Index ......................................................... 6
PRECAUTIONS .......................................................... 7
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 7
Precautions for On Board Diagnostic (OBD) System
of A/T and Engine .................................................... 7
Precautions .............................................................. 8
Service Notice or Precautions .................................. 9
Wiring Diagrams and Trouble Diagnosis .................. 9
PREPARATION ......................................................... 10
Special Service Tools ............................................. 10
Commercial Service Tools ....................................... 11
A/T FLUID ................................................................. 12
Changing A/T Fluid ................................................ 12
Checking A/T Fluid ................................................. 12
A/T Fluid Cooler Cleaning ...................................... 14
A/T CONTROL SYSTEM .......................................... 17
Cross-Sectional View (2WD Models) ..................... 17
Cross-Sectional View (AWD Models) ..................... 18
Shift Mechanism ..................................................... 19
TCM Function ......................................................... 30
CAN Communication .............................................. 31
Input/Output Signal of TCM .................................... 31
Line Pressure Control ............................................ 32
Shift Control ........................................................... 33
Lock-up Control ...................................................... 34
Engine Brake Control ............................................. 36
Control Valve .......................................................... 36
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 38
Introduction ............................................................ 38
OBD-II Function for A/T System ............................. 38
One or Two Trip Detection Logic of OBD-II ............ 38
OBD-II Diagnostic Trouble Code (DTC) ................. 38
Malfunction Indicator Lamp (MIL) ........................... 41
TROUBLE DIAGNOSIS ............................................ 42
DTC Inspection Priority Chart ................................ 42
Fail-Safe ................................................................. 42How To Perform Trouble Diagnosis For Quick and
Accurate Repair ...................................................... 44
A/T Electrical Parts Location .................................. 49
Circuit Diagram ....................................................... 50
Inspections Before Trouble Diagnosis .................... 51
Check Before Engine is Started .............................. 55
Check at Idle ........................................................... 55
Cruise Test - Part 1 ................................................. 57
Cruise Test - Part 2 ................................................. 60
Cruise Test - Part 3 ................................................. 61
Vehicle Speed When Shifting Gears ...................... 62
Vehicle Speed When Performing and Releasing
Complete Lock-up .................................................. 63
Vehicle Speed When Performing and Releasing
Slip Lock-up ............................................................ 64
Symptom Chart ....................................................... 65
TCM Input/Output Signal Reference Values ........... 90
CONSULT-II ............................................................ 91
Diagnostic Procedure Without CONSULT-II .........103
DTC U1000 CAN COMMUNICATION LINE ............105
Description ............................................................105
On Board Diagnosis Logic ....................................105
Possible Cause .....................................................105
DTC Confirmation Procedure ...............................105
Wiring Diagram — AT — CAN ..............................106
Diagnostic Procedure ...........................................107
DTC P0615 START SIGNAL CIRCUIT ...................108
Description ............................................................108
CONSULT-II Reference Value ..............................108
On Board Diagnosis Logic ....................................108
Possible Cause .....................................................108
DTC Confirmation Procedure ...............................108
Wiring Diagram — AT — STSIG ..........................109
Diagnostic Procedure ...........................................110
DTC P0705 PARK/NEUTRAL POSITION SWITCH .112
Description ............................................................112
CONSULT-II Reference Value ..............................112
On Board Diagnosis Logic ....................................112
Possible Cause .....................................................112
DTC Confirmation Procedure ...............................112

AT-2Revision: 2004 November 2004 FX35/FX45Wiring Diagram — AT — PNP/SW .......................113
Diagnostic Procedure ...........................................114
DTC P0720 VEHICLE SPEED SENSOR A/T (REV-
OLUTION SENSOR) ...............................................116
Description ............................................................116
CONSULT-II Reference Value ..............................116
On Board Diagnosis Logic ....................................116
Possible Cause .....................................................116
DTC Confirmation Procedure ...............................116
Wiring Diagram — AT — VSSA/T .........................118
Diagnostic Procedure ...........................................119
DTC P0725 ENGINE SPEED SIGNAL ...................121
Description ............................................................121
CONSULT-II Reference Value ..............................121
On Board Diagnosis Logic ....................................121
Possible Cause .....................................................121
DTC Confirmation Procedure ...............................121
Diagnostic Procedure ...........................................121
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE .................................................123
Description ............................................................123
CONSULT-II Reference Value ..............................123
On Board Diagnosis Logic ....................................123
Possible Cause .....................................................123
DTC Confirmation Procedure ...............................123
Diagnostic Procedure ...........................................124
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) .125
Description ............................................................125
CONSULT-II Reference Value ..............................125
On Board Diagnosis Logic ....................................125
Possible Cause .....................................................125
DTC Confirmation Procedure ...............................125
Diagnostic Procedure ...........................................126
DTC P0745 LINE PRESSURE SOLENOID VALVE .127
Description ............................................................127
CONSULT-II Reference Value ..............................127
On Board Diagnosis Logic ....................................127
Possible Cause .....................................................127
DTC Confirmation Procedure ...............................127
Diagnostic Procedure ...........................................128
DTC P1701 TRANSMISSION CONTROL MODULE
(POWER SUPPLY) ..................................................129
Description ............................................................129
On Board Diagnosis Logic ....................................129
Possible Cause .....................................................129
DTC Confirmation Procedure ...............................129
Wiring Diagram — AT — POWER ........................130
Diagnostic Procedure ...........................................131
DTC P1702 TRANSMISSION CONTROL MODULE
(RAM) ......................................................................133
Description ............................................................133
On Board Diagnosis Logic ....................................133
Possible Cause .....................................................133
DTC Confirmation Procedure ...............................133
Diagnostic Procedure ...........................................133
DTC P1703 TRANSMISSION CONTROL MODULE
(ROM) ......................................................................134
Description ............................................................134
On Board Diagnosis Logic ....................................134Possible Cause .....................................................134
DTC Confirmation Procedure ................................134
Diagnostic Procedure ............................................134
DTC P1704 TRANSMISSION CONTROL MODULE
(EEPROM) ...............................................................135
Description ............................................................135
On Board Diagnosis Logic ....................................135
Possible Cause .....................................................135
DTC Confirmation Procedure ................................135
Diagnostic Procedure ............................................135
DTC P1705 THROTTLE POSITION SENSOR ........136
Description ............................................................136
CONSULT-II Reference Value ...............................136
On Board Diagnosis Logic ....................................136
Possible Cause .....................................................136
DTC Confirmation Procedure ................................136
Diagnostic Procedure ............................................136
DTC P1710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................139
Description ............................................................139
CONSULT-II Reference Value ...............................139
On Board Diagnosis Logic ....................................139
Possible Cause .....................................................139
DTC Confirmation Procedure ................................139
Wiring Diagram — AT — FTS ...............................140
Diagnostic Procedure ............................................141
Component Inspection ..........................................142
DTC P1716 TURBINE REVOLUTION SENSOR ....143
Description ............................................................143
CONSULT-II Reference Value ...............................143
On Board Diagnosis Logic ....................................143
Possible Cause .....................................................143
DTC Confirmation Procedure ................................143
Diagnostic Procedure ............................................144
DTC P1721 VEHICLE SPEED SENSOR MTR .......145
Description ............................................................145
CONSULT-II Reference Value ...............................145
On Board Diagnosis Logic ....................................145
Possible Cause .....................................................145
DTC Confirmation Procedure ................................145
Diagnostic Procedure ............................................146
DTC P1730 A/T INTERLOCK .................................147
Description ............................................................147
On Board Diagnosis Logic ....................................147
Possible Cause .....................................................147
DTC Confirmation Procedure ................................147
Judgement of A/T Interlock ...................................147
Diagnostic Procedure ............................................148
DTC P1731 A/T 1ST ENGINE BRAKING ...............150
Description ............................................................150
CONSULT-II Reference Value ...............................150
On Board Diagnosis Logic ....................................150
Possible Cause .....................................................150
DTC Confirmation Procedure ................................150
Diagnostic Procedure ............................................151
DTC P1752 INPUT CLUTCH SOLENOID VALVE ..152
Description ............................................................152
CONSULT-II Reference Value ...............................152
On Board Diagnosis Logic ....................................152

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Revision: 2004 November 2004 FX35/FX45Possible Cause .................................................... 152
DTC Confirmation Procedure ............................... 152
Diagnostic Procedure ........................................... 153
DTC P1754 INPUT CLUTCH SOLENOID VALVE
FUNCTION .............................................................. 154
Description ........................................................... 154
CONSULT-II Reference Value .............................. 154
On Board Diagnosis Logic ................................... 154
Possible Cause .................................................... 154
DTC Confirmation Procedure ............................... 154
Diagnostic Procedure ........................................... 155
DTC P1757 FRONT BRAKE SOLENOID VALVE .. 156
Description ........................................................... 156
CONSULT-II Reference Value .............................. 156
On Board Diagnosis Logic ................................... 156
Possible Cause .................................................... 156
DTC Confirmation Procedure ............................... 156
Diagnostic Procedure ........................................... 157
DTC P1759 FRONT BRAKE SOLENOID VALVE
FUNCTION .............................................................. 158
Description ........................................................... 158
CONSULT-II Reference Value .............................. 158
On Board Diagnosis Logic ................................... 158
Possible Cause .................................................... 158
DTC Confirmation Procedure ............................... 158
Diagnostic Procedure ........................................... 159
DTC P1762 DIRECT CLUTCH SOLENOID VALVE . 160
Description ........................................................... 160
CONSULT-II Reference Value .............................. 160
On Board Diagnosis Logic ................................... 160
Possible Cause .................................................... 160
DTC Confirmation Procedure ............................... 160
Diagnostic Procedure ........................................... 161
DTC P1764 DIRECT CLUTCH SOLENOID VALVE
FUNCTION .............................................................. 162
Description ........................................................... 162
CONSULT-II Reference Value .............................. 162
On Board Diagnosis Logic ................................... 162
Possible Cause .................................................... 162
DTC Confirmation Procedure ............................... 162
Diagnostic Procedure ........................................... 163
DTC P1767 HIGH AND LOW REVERSE CLUTCH
SOLENOID VALVE ................................................. 164
Description ........................................................... 164
CONSULT-II Reference Value .............................. 164
On Board Diagnosis Logic ................................... 164
Possible Cause .................................................... 164
DTC Confirmation Procedure ............................... 164
Diagnostic Procedure ........................................... 165
DTC P1769 HIGH AND LOW REVERSE CLUTCH
SOLENOID VALVE FUNCTION ............................. 166
Description ........................................................... 166
CONSULT-II Reference Value .............................. 166
On Board Diagnosis Logic ................................... 166
Possible Cause .................................................... 166
DTC Confirmation Procedure ............................... 166
Diagnostic Procedure ........................................... 167
DTC P1772 LOW COAST BRAKE SOLENOID
VALVE ..................................................................... 168Description ............................................................168
CONSULT-II Reference Value ..............................168
On Board Diagnosis Logic ....................................168
Possible Cause .....................................................168
DTC Confirmation Procedure ...............................168
Diagnostic Procedure ...........................................169
DTC P1774 LOW COAST BRAKE SOLENOID
VALVE FUNCTION ..................................................170
Description ............................................................170
CONSULT-II Reference Value ..............................170
On Board Diagnosis Logic ....................................170
Possible Cause .....................................................170
DTC Confirmation Procedure ...............................170
Diagnostic Procedure ...........................................171
DTC P1815 MANUAL MODE SWITCH ..................172
Description ............................................................172
CONSULT-II Reference Value in Data Monitor Mode
.172
On Board Diagnosis Logic ....................................172
Possible Cause .....................................................172
DTC Confirmation Procedure ...............................172
Wiring Diagram — AT — MMSW .........................173
Diagnostic Procedure ...........................................175
Component Inspection ..........................................176
A/T Position Indicator ...........................................177
DTC P1841 ATF PRESSURE SWITCH 1 ...............178
Description ............................................................178
CONSULT-II Reference Value ..............................178
On Board Diagnosis Logic ....................................178
Possible Cause .....................................................178
DTC Confirmation Procedure ...............................178
Diagnostic Procedure ...........................................179
DTC P1843 ATF PRESSURE SWITCH 3 ...............180
Description ............................................................180
CONSULT-II Reference Value ..............................180
On Board Diagnosis Logic ....................................180
Possible Cause .....................................................180
DTC Confirmation Procedure ...............................180
Diagnostic Procedure ...........................................181
DTC P1845 ATF PRESSURE SWITCH 5 ...............182
Description ............................................................182
CONSULT-II Reference Value ..............................182
On Board Diagnosis Logic ....................................182
Possible Cause .....................................................182
DTC Confirmation Procedure ...............................182
Diagnostic Procedure ...........................................183
DTC P1846 ATF PRESSURE SWITCH 6 ...............184
Description ............................................................184
CONSULT-II Reference Value ..............................184
On Board Diagnosis Logic ....................................184
Possible Cause .....................................................184
DTC Confirmation Procedure ...............................184
Diagnostic Procedure ...........................................185
CLOSED THROTTLE POSITION AND WIDE OPEN
THROTTLE POSITION CIRCUIT ............................186
CONSULT-II Reference Value ..............................186
Diagnostic Procedure ...........................................186
BRAKE SIGNAL CIRCUIT ......................................187

AT-4Revision: 2004 November 2004 FX35/FX45CONSULT-II Reference Value ..............................187
Diagnostic Procedure ...........................................187
TROUBLE DIAGNOSIS FOR SYMPTOMS ............188
Wiring Diagram — AT — NONDTC ......................188
A/T CHECK Indicator Lamp Does Not Come On . 191
Engine Cannot Be Started In “P” or “N” Position ..193
In “P” Position, Vehicle Moves When Pushed ......193
In “N” Position, Vehicle Moves ..............................194
Large Shock (“N” to “D” Position) .........................195
Vehicle Does Not Creep Backward In “R” Position .198
Vehicle Does Not Creep Forward In “D” Position . 201
Vehicle Cannot Be Started From D
1 .....................203
A/T Does Not Shift: D
1 → D2 ................................206
A/T Does Not Shift: D
2 → D3 ................................208
A/T Does Not Shift: D
3 → D4 ................................211
A/T Does Not Shift: D
4 → D5 ................................213
A/T Does Not Perform Lock-up ............................216
A/T Does Not Hold Lock-up Condition ..................218
Lock-up Is Not Released ......................................220
Engine Speed Does Not Return To Idle ................221
Cannot Be Changed to Manual Mode ..................222
A/T Does Not Shift: 5th gear → 4th gear ..............223
A/T Does Not Shift: 4th gear → 3rd gear ..............225
A/T Does Not Shift: 3rd gear → 2nd gear .............227
A/T Does Not Shift: 2nd gear → 1st gear .............229
Vehicle Does Not Decelerate By Engine Brake ....231
SHIFT CONTROL SYSTEM ....................................233
Control Device Removal and Installation ..............233
Adjustment of A/T Position ...................................234
Checking of A/T Position ......................................234
A/T SHIFT LOCK SYSTEM .....................................235
Description ............................................................235
Shift Lock System Electrical Parts Location .........235
Wiring Diagram — AT — SHIFT ...........................236
Diagnostic Procedure ...........................................237
KEY INTERLOCK CABLE ......................................239
Components .........................................................239
Removal and Installation ......................................240
ON-VEHICLE SERVICE ..........................................242
Control Valve with TCM and A/T Fluid Temperature
Sensor 2 ...............................................................242
Parking Components (2WD Models Only) ............253Rear Oil Seal .........................................................259
Revolution Sensor Components (2WD Models
Only) .....................................................................260
AIR BREATHER HOSE ...........................................264
Removal and Installation .......................................264
TRANSMISSION ASSEMBLY .................................266
Removal and Installation (2WD Models) ...............266
Removal and Installation (AWD models) ..............269
OVERHAUL .............................................................274
Components ..........................................................274
Oil Channel ...........................................................282
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ..........................284
DISASSEMBLY .......................................................286
Disassembly ..........................................................286
REPAIR FOR COMPONENT PARTS ......................303
Oil Pump ...............................................................303
Front Sun Gear, 3rd One-Way Clutch ...................306
Front Carrier, Input Clutch, Rear Internal Gear .....308
Mid Sun Gear, Rear Sun Gear, High and Low
Reverse Clutch Hub ..............................................314
High and Low Reverse Clutch ..............................320
Direct Clutch .........................................................323
ASSEMBLY .............................................................325
Assembly (1) .........................................................325
Adjustment ............................................................338
Assembly (2) .........................................................341
SERVICE DATA AND SPECIFICATIONS (SDS) ....348
General Specifications ..........................................348
Vehicle Speed When Shifting Gears .....................348
Vehicle Speed When Performing and Releasing
Complete Lock-up .................................................349
Vehicle Speed When Performing and Releasing
Slip Lock-up ..........................................................349
Stall Speed ............................................................350
Line Pressure ........................................................350
A/T Fluid Temperature Sensor ..............................350
Turbine Revolution Sensor ....................................350
Vehicle Speed Sensor A/T (Revolution Sensor) ...350
Reverse Brake ......................................................350
Total End Play .......................................................351

PRECAUTIONS
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Service Notice or PrecautionsACS002L7
ATF COOLER SERVICE
If A/T fluid contains frictional material (clutches, bands, etc.), or if an A/T is repaired, overhauled, or replaced,
inspect and clean the A/T fluid cooler mounted in the radiator or replace the radiator. Flush cooler lines using
cleaning solvent and compressed air after repair. For A/T fluid cooler cleaning procedure, refer to AT- 1 4 , "
A/T
Fluid Cooler Cleaning" . For radiator replacement, refer to CO-14, "RADIATOR" (for VQ35DE) or CO-39,
"RADIATOR" (for VK45DE).
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 indicator or the malfunction indicator lamp (MIL). Refer to the table
on AT- 9 4 , "
SELF-DIAGNOSTIC RESULT MODE" for the indicator used to display each self-diagnostic
result.

The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM mem-
ories.
Always perform the procedure on AT- 3 9 , "
HOW TO ERASE DTC" to complete the repair and avoid
unnecessary blinking of the MIL.
For details of OBD-II, refer to EC-53, "
ON BOARD DIAGNOSTIC (OBD) SYSTEM" (for VQ35DE) or EC-703,
"ON BOARD DIAGNOSTIC (OBD) SYSTEM" (for VK45DE).

Certain systems and components, especially those related to OBD, may use the new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-74, "
HAR-
NESS CONNECTOR" .
Wiring Diagrams and Trouble DiagnosisACS002L8
When you read wiring diagrams, refer to the following:

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

PG-3, "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".

AT-106
DTC U1000 CAN COMMUNICATION LINE
Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — AT — CANACS007AO
TCWM0246E

DTC P0615 START SIGNAL CIRCUIT
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Wiring Diagram — AT — STSIGACS007AV
TCWM0247E

DTC P0615 START SIGNAL CIRCUIT
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3. CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to AT- 2 4 2 , "
Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
2. Disconnect A/T assembly harness connector and control valve with TCM harness connector.
3. Check continuity between A/T assembly harness connector terminal and control valve with TCM harness
connector terminal. Refer to AT- 1 0 9 , "
Wiring Diagram — AT — STSIG" .
4. If OK, check harness for short to ground and short to power.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 2 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 0 8 , "DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.

DTC P0705 PARK/NEUTRAL POSITION SWITCH
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Wiring Diagram — AT — PNP/SWACS007B2
TCWM0248E

AT-114
DTC P0705 PARK/NEUTRAL POSITION SWITCH
Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureACS007B3
1. CHECK PNP SW CIRCUIT
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Read out “N/P”, “R” and “D” position switches moving selector
lever to each position.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK TCM
Perform TCM input/output signals inspection. Refer to AT- 9 0 , "
TCM Input/Output Signal Reference Values" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to AT- 2 4 2 , "
Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
2. Disconnect A/T assembly harness connector and control valve with TCM harness connector.
3. Check continuity between A/T assembly harness connector terminal and control valve with TCM harness
connector terminal. Refer to AT- 11 3 , "
Wiring Diagram — AT — PNP/SW" .
4. If OK, check harness for short to ground and short to power.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 2 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
4. DETECT MALFUNCTIONING ITEM
Check the following items:

Harness for short or open between battery and A/T assembly harness connector terminals 1, 2

Harness for short or open between ignition switch and A/T assembly harness connector terminal 6

10A fuse (No. 37, located in the fuse and fusible link block) and 10A fuse (No. 83, located in the IPDM E/
R).

Ignition switch, Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
Item name Condition Display value
SLCTLVR POSISelector lever in “N” and “P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
SCIA5296E