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AUTOMATIC TRANSAXLE
GI
SECTION AT MA
EM
LC
EC
CONTENTS
FE
TROUBLE DIAGNOSIS - INDEX ....................................5 Road Test...................................................................70
Alphabetical & P No. Index for DTC ...........................5 TROUBLE DIAGNOSIS - GENERAL
PRECAUTIONS ...............................................................7 DESCRIPTION ...............................................................88
Supplemental Restraint System (SRS) AIR Symptom Chart..........................................................88
BAG and SEAT BELT PRE-TENSIONER...............7 TCM Terminals and Reference Value........................99 AX
Precautions for On Board Diagnostic (OBD) TROUBLE DIAGNOSIS FOR POWER SUPPLY........102
System of A/T and Engine...........................................7 Wiring Diagram - AT - MAIN....................................102
SU
Precautions ..................................................................7 Diagnostic Procedure ..............................................103
Service Notice or Precautions .....................................9 DTC U1000 CAN COMMUNICATION LINE ...............105
Wiring Diagrams and Trouble Diagnosis...................10 Description ...............................................................105 BR
PREPARATION .............................................................11 On Board Diagnosis Logic.......................................105
Special Service Tools ................................................11 Possible Cause........................................................105
Commercial Service Tools .........................................14 Diagnostic Trouble Code (DTC) Confirmation ST
OVERALL SYSTEM ......................................................15 Procedure ................................................................106
A/T Electrical Parts Location .....................................15 Wiring Diagram - AT - CAN .....................................107
Circuit Diagram ..........................................................16 Diagnostic Procedure ..............................................108
RS
Cross-sectional View .................................................17 DTC P0705 PARK/NEUTRAL POSITION SWITCH ...109
Hydraulic Control Circuit............................................18 Description ...............................................................109 BT
Shift Mechanism ........................................................19 On Board Diagnosis Logic.......................................109
Control System ..........................................................28 Possible Cause........................................................110
CAN Communication .................................................29 Diagnostic Trouble Code (DTC) Confirmation HA
Control Mechanism....................................................31 Procedure ................................................................110
Control Valve .............................................................35 Wiring Diagram - AT - PNP/SW............................... 111
ON BOARD DIAGNOSTIC SYSTEM Diagnostic Procedure ..............................................112 SC
DESCRIPTION ...............................................................37 DTC P0710 A/T FLUID TEMPERATURE SENSOR
Introduction ................................................................37 CIRCUIT .......................................................................115 EL
OBD-II Function for A/T System................................37 Description ...............................................................115
One or Two Trip Detection Logic of OBD-II ..............37 On Board Diagnosis Logic.......................................115
OBD-II Diagnostic Trouble Code (DTC) ....................37 Possible Cause........................................................116 IDX
Malfunction Indicator Lamp (MIL)..............................41 Diagnostic Trouble Code (DTC) Confirmation
CONSULT-II ...............................................................41 Procedure ................................................................116
Diagnostic Procedure Without CONSULT-II..............53 Wiring Diagram - AT - FTS ......................................117
TROUBLE DIAGNOSIS - INTRODUCTION..................59 Diagnostic Procedure ..............................................118
Introduction ................................................................59 DTC P0720 VEHICLE SPEED SENSOR.A/T
Work Flow..................................................................63 (REVOLUTION SENSOR) ...........................................121
TROUBLE DIAGNOSIS - BASIC INSPECTION ...........65 Description ...............................................................121
A/T Fluid Check .........................................................65 On Board Diagnosis Logic.......................................121
Stall Test ....................................................................65 Possible Cause........................................................121
Line Pressure Test.....................................................69
CONTENTS (Cont'd)
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................161
Procedure ................................................................122 DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) ....163
Wiring Diagram - AT - VSSA/T ................................123 Description ...............................................................163
Diagnostic Procedure ..............................................124 On Board Diagnosis Logic.......................................163
DTC P0725 ENGINE SPEED SIGNAL .......................126 Possible Cause........................................................164
Description ...............................................................126 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................126 Procedure ................................................................164
Possible Cause........................................................126 Wiring Diagram - AT - TCCSIG ...............................166
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................167
Procedure ................................................................127 DTC P0745 LINE PRESSURE SOLENOID VALVE ...173
Wiring Diagram - AT - ENGSS ................................128 Description ...............................................................173
Diagnostic Procedure ..............................................129 On Board Diagnosis Logic.......................................173
DTC P0731 A/T 1ST GEAR FUNCTION ....................131 Possible Cause........................................................174
Description ...............................................................131 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................131 Procedure ................................................................174
Possible Cause........................................................132 Wiring Diagram - AT - LPSV....................................175
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................176
Procedure ................................................................132 DTC P0750 SHIFT SOLENOID VALVE A ..................179
Wiring Diagram - AT - 1ST ......................................134 Description ...............................................................179
Diagnostic Procedure ..............................................135 On Board Diagnosis Logic.......................................179
DTC P0732 A/T 2ND GEAR FUNCTION....................137 Possible Cause........................................................179
Description ...............................................................137 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................137 Procedure ................................................................180
Possible Cause........................................................138 Wiring Diagram - AT - SSV/A ..................................181
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................182
Procedure ................................................................138 DTC P0755 SHIFT SOLENOID VALVE B ..................184
Wiring Diagram - AT - 2ND......................................140 Description ...............................................................184
Diagnostic Procedure ..............................................141 On Board Diagnosis Logic.......................................184
DTC P0733 A/T 3RD GEAR FUNCTION....................143 Possible Cause........................................................184
Description ...............................................................143 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................143 Procedure ................................................................185
Possible Cause........................................................144 Wiring Diagram - AT - SSV/B ..................................186
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................187
Procedure ................................................................144 DTC P1705 ACCELERATOR PEDAL POSITION
Wiring Diagram - AT - 3RD......................................146 SENSOR (THROTTLE POSITION SENSOR).............189
Diagnostic Procedure ..............................................147 Description ...............................................................189
DTC P0734 A/T 4TH GEAR FUNCTION ....................149 On Board Diagnosis Logic.......................................190
Description ...............................................................149 Possible Cause........................................................190
On Board Diagnosis Logic.......................................150 Diagnostic Trouble Code (DTC) Confirmation
Possible Cause........................................................150 Procedure ................................................................191
Diagnostic Trouble Code (DTC) Confirmation Wiring Diagram - AT - TPS......................................192
Procedure ................................................................151 Diagnostic Procedure ..............................................193
Wiring Diagram - AT - 4TH ......................................153 DTC P1760 OVERRUN CLUTCH SOLENOID
Diagnostic Procedure ..............................................154 VALVE..........................................................................196
DTC P0740 TORQUE CONVERTER CLUTCH Description ...............................................................196
SOLENOID VALVE......................................................158 On Board Diagnosis Logic.......................................196
Description ...............................................................158 Possible Cause........................................................196
On Board Diagnosis Logic.......................................158 Diagnostic Trouble Code (DTC) Confirmation
Possible Cause........................................................158 Procedure ................................................................197
Diagnostic Trouble Code (DTC) Confirmation Wiring Diagram - AT - OVRCSV..............................198
Procedure ................................................................159 Diagnostic Procedure ..............................................199
Wiring Diagram - AT - TCV......................................160
AT-2
CONTENTS (Cont'd)
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP A/T Does Not Shift: D1 -> D2 or Does Not
SENSOR CIRCUIT AND TCM POWER SOURCE) ....201 Kickdown: D4 -> D2..................................................242
Description ...............................................................201 A/T Does Not Shift: D2 -> D3...................................245 GI
On Board Diagnosis Logic.......................................202 A/T Does Not Shift: D3 -> D4...................................248
Possible Cause........................................................202 A/T Does Not Perform Lock-up ...............................251 MA
Diagnostic Trouble Code (DTC) Confirmation A/T Does Not Hold Lock-up Condition ....................253
Procedure ................................................................202 Lock-up Is Not Released .........................................255
Wiring Diagram - AT - BA/FTS ................................203 Engine Speed Does Not Return To Idle (Light EM
Diagnostic Procedure ..............................................204 Braking D4 -> D3).....................................................256
DTC VEHICLE SPEED SENSOR.MTR .......................208 Vehicle Does Not Start From D1 .............................259
Description ...............................................................208 A/T Does Not Shift: D4 -> D3, When 3rd Position LC
On Board Diagnosis Logic.......................................208 Switch ON -> OFF...................................................260
Possible Cause........................................................208 A/T Does Not Shift: D3 -> 22, When Selector
EC
Diagnostic Trouble Code (DTC) Confirmation Lever D -> 2nd Position ..........................................261
Procedure ................................................................209 A/T Does Not Shift: 22 -> 11, When Selector
Wiring Diagram - AT - VSSMTR..............................210 Lever 2nd -> 1st Position ........................................262 FE
Diagnostic Procedure ..............................................211 Vehicle Does Not Decelerate By Engine Brake ......265
DTC POWER TRAIN REVOLUTION SENSOR ..........213 TCM Self-diagnosis Does Not Activate ...................267
Description ...............................................................213 A/T SHIFT LOCK SYSTEM.........................................277
On Board Diagnosis Logic.......................................213 Description ...............................................................277
Diagnostic Trouble Code (DTC) Confirmation Shift Lock System Electrical Parts Location............277
Procedure ................................................................214 Wiring Diagram - SHIFT -........................................278
AX
Wiring Diagram - AT - P/T SEN-01 .........................215 Shift Lock Control Unit Reference Values...............279
Diagnostic Procedure ..............................................216 Component Inspection.............................................280 SU
Component Inspection.............................................217 SHIFT CONTROL SYSTEM ........................................282
DTC CONTROL UNIT (RAM), CONTROL UNIT Control Cable...........................................................282
(ROM)...........................................................................218 ON-VEHICLE SERVICE ..............................................283 BR
Description ...............................................................218 Control Valve Assembly and Accumulators.............283
On Board Diagnosis Logic.......................................218 Revolution Sensor Replacement .............................284
Possible Cause........................................................218 Park/Neutral Position (PNP) Switch Adjustment .....284 ST
Diagnostic Trouble Code (DTC) Confirmation Control Cable Adjustment........................................285
Procedure ................................................................218 Differential Side Oil Seal Replacement ...................285
RS
Diagnostic Procedure ..............................................219 REMOVAL AND INSTALLATION ...............................286
DTC CONTROL UNIT (EEP ROM) .............................220 Removal...................................................................286
Description ...............................................................220 Installation................................................................287 BT
On Board Diagnosis Logic.......................................220 OVERHAUL .................................................................289
Possible Cause........................................................220 Components.............................................................289
Diagnostic Trouble Code (DTC) Confirmation Oil Channel ..............................................................292 HA
Procedure ................................................................220 Locations of Adjusting Shims, Needle Bearings,
Diagnostic Procedure ..............................................221 Thrust Washers and Snap Rings ............................293
TROUBLE DIAGNOSES FOR SYMPTOMS ...............222 DISASSEMBLY............................................................294
SC
Wiring Diagram - AT - NONDTC .............................222 REPAIR FOR COMPONENT PARTS .........................308
A/T CHECK Indicator Lamp Does Not Come On ...224 Manual Shaft............................................................308 EL
Engine Cannot Be Started In P and N Position......226 Oil Pump ..................................................................311
In P Position, Vehicle Moves Forward or Control Valve Assembly...........................................315
Backward When Pushed .........................................228 Control Valve Upper Body .......................................323 IDX
In N Position, Vehicle Moves...................................229 Control Valve Lower Body .......................................327
Large Shock. N -> R Position .................................231 Reverse Clutch ........................................................329
Vehicle Does Not Creep Backward In R Position ...233 High Clutch ..............................................................332
Vehicle Does Not Creep Forward in D, 2nd or Forward and Overrun Clutches ...............................337
1st Position ..............................................................236 Low & Reverse Brake..............................................342
Vehicle Cannot Be Started From D1 .......................239
AT-3
CONTENTS (Cont'd)
Rear Internal Gear, Forward Clutch Hub and Accumulator .............................................................383
Overrun Clutch Hub.................................................345 Clutch and Brakes ...................................................384
Output Shaft, Idler Gear, Reduction Pinion Gear Final Drive................................................................386
and Bearing Retainer...............................................349 Planetary Carrier and Oil Pump ..............................387
Band Servo Piston Assembly ..................................354 Input Shaft ...............................................................388
Final Drive................................................................359 Reduction Pinion Gear ............................................388
ASSEMBLY..................................................................363 Band Servo ..............................................................389
Assembly (1)............................................................363 Output Shaft.............................................................389
Adjustment (1) .........................................................363 Bearing Retainer......................................................390
Assembly (2)............................................................368 Total End Play..........................................................390
Adjustment (2) .........................................................374 Reverse Clutch End Play ........................................390
Assembly (3)............................................................376 Removal and Installation .........................................391
SERVICE DATA AND SPECIFICATIONS (SDS) .......382 Shift Solenoid Valves...............................................391
General Specifications.............................................382 Solenoid Valves .......................................................391
Shift Schedule..........................................................382 A/T Fluid Temperature Sensor.................................391
Stall Revolution........................................................382 Revolution Sensor (For Speed Sensor) ..................391
Line Pressure...........................................................383 Dropping Resistor ....................................................391
Control Valves..........................................................383 Power Train Revolution Sensor...............................391
AT-4
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC
Alphabetical & P No. Index for DTC NHAT0001
ALPHABETICAL INDEX FOR DTC NHAT0001S01
DTC
Items GI
CONSULT-II Reference page
(CONSULT-II screen terms)
GST*1
A/T 1ST GR FNCTN P0731 AT-131
MA
A/T 2ND GR FNCTN P0732 AT-137
EM
A/T 3RD GR FNCTN P0733 AT-143
A/T 4TH GR FNCTN P0734 AT-149
LC
A/T TCC S/V FNCTN P0744 AT-163
ATF TEMP SEN/CIRC P0710 AT-115
EC
CAN COMM CIRCUIT U1000 AT-105
ENGINE SPEED SIG P0725 AT-126
FE
L/PRESS SOL/CIRC P0745 AT-173
O/R CLTCH SOL/CIRC P1760 AT-196
PNP SW/CIRC P0705 AT-109
SFT SOL A/CIRC*2 P0750 AT-179 AX
SFT SOL B/CIRC*2 P0755 AT-184
TCC SOLENOID/CIRC P0740 AT-158 SU
TP SEN/CIRC A/T*2 P1705 AT-189
VEH SPD SEN/CIR AT*3 P0720 AT-121 BR
*1: These numbers are prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates. ST
*3: The MIL illuminates when both the "Revolution sensor signal" and the "Vehicle speed sensor signal" meet the fail-safe condition at
the same time.
RS
BT
HA
SC
EL
IDX
AT-5
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC (Cont'd)
P NO. INDEX FOR DTC =NHAT0001S02
DTC
Items
CONSULT-II Reference page
(CONSULT-II screen terms)
GST*1
P0705 PNP SW/CIRC AT-109
P0710 ATF TEMP SEN/CIRC AT-115
P0720 VEH SPD SEN/CIR AT*3 AT-121
P0725 ENGINE SPEED SIG AT-126
P0731 A/T 1ST GR FNCTN AT-131
P0732 A/T 2ND GR FNCTN AT-137
P0733 A/T 3RD GR FNCTN AT-143
P0734 A/T 4TH GR FNCTN AT-149
P0740 TCC SOLENOID/CIRC AT-158
P0744 A/T TCC S/V FNCTN AT-163
P0745 L/PRESS SOL/CIRC AT-173
P0750 SFT SOL A/CIRC*2 AT-179
P0755 SFT SOL B/CIRC*2 AT-184
P1705 TP SEN/CIRC A/T*2 AT-189
P1760 O/R CLTCH SOL/CIRC AT-196
U1000 CAN COMM CIRCUIT AT-105
*1: These numbers are prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
*3: The MIL illuminates when both the "Revolution sensor signal" and the "Vehicle speed sensor signal" meet the fail-safe condition at
the same time.
AT-6
PRECAUTIONS
Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT PRE-TENSIONER" NHAT0002
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER" used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of GI
collision. The SRS composition which is available to INFINITI I35 is as follows:
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