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AUTOMATIC TRANSAXLE
GI
SECTION AT MA
EM
LC
EC
CONTENTS
FE
TROUBLE DIAGNOSIS - INDEX ....................................5 TROUBLE DIAGNOSIS - GENERAL
Alphabetical & P No. Index for DTC ...........................5 DESCRIPTION ...............................................................86
PRECAUTIONS ...............................................................7 Symptom Chart..........................................................86
Supplemental Restraint System (SRS) AIR TCM Terminals and Reference Value........................97
BAG and SEAT BELT PRE-TENSIONER...............7 CAN COMMUNICATION .............................................100 AX
Precautions for On Board Diagnostic (OBD) System Description..................................................100
System of A/T and Engine...........................................7 TROUBLE DIAGNOSIS FOR POWER SUPPLY........102
SU
Precautions ..................................................................8 Wiring Diagram - AT - MAIN....................................102
Service Notice or Precautions .....................................9 Diagnostic Procedure ..............................................103
Wiring Diagrams and Trouble Diagnosis...................10 DTC P0705 PARK/NEUTRAL POSITION SWITCH ...105 BR
PREPARATION .............................................................11 Description ...............................................................105
Special Service Tools ................................................11 On Board Diagnosis Logic.......................................105
Commercial Service Tools .........................................14 Possible Cause........................................................106 ST
OVERALL SYSTEM ......................................................15 Diagnostic Trouble Code (DTC) Confirmation
A/T Electrical Parts Location .....................................15 Procedure ................................................................106
Circuit Diagram ..........................................................16 Wiring Diagram - AT - PNP/SW...............................107
RS
Cross-sectional View .................................................17 Diagnostic Procedure ..............................................108
Hydraulic Control Circuit............................................18 DTC P0710 A/T FLUID TEMPERATURE SENSOR BT
Shift Mechanism ........................................................19 CIRCUIT ....................................................................... 111
Control System ..........................................................28 Description ............................................................... 111
Control Mechanism....................................................30 On Board Diagnosis Logic....................................... 111 HA
Control Valve .............................................................34 Possible Cause........................................................112
ON BOARD DIAGNOSTIC SYSTEM Diagnostic Trouble Code (DTC) Confirmation
DESCRIPTION ...............................................................36 Procedure ................................................................112 SC
Introduction ................................................................36 Wiring Diagram - AT - FTS ......................................113
OBD-II Function for A/T System................................36 Diagnostic Procedure ..............................................114 EL
One or Two Trip Detection Logic of OBD-II ..............36 DTC P0720 VEHICLE SPEED SENSOR.A/T
OBD-II Diagnostic Trouble Code (DTC) ....................36 (REVOLUTION SENSOR) ...........................................117
Malfunction Indicator Lamp (MIL)..............................40 Description ...............................................................117 IDX
CONSULT-II ...............................................................40 On Board Diagnosis Logic.......................................117
Diagnostic Procedure Without CONSULT-II..............51 Possible Cause........................................................117
TROUBLE DIAGNOSIS - INTRODUCTION..................57 Diagnostic Trouble Code (DTC) Confirmation
Introduction ................................................................57 Procedure ................................................................118
Work Flow..................................................................61 Wiring Diagram - AT - VSSA/T ................................119
TROUBLE DIAGNOSIS - BASIC INSPECTION ...........63 Diagnostic Procedure ..............................................120
A/T Fluid Check .........................................................63 DTC P0725 ENGINE SPEED SIGNAL .......................122
Stall Test ....................................................................63 Description ...............................................................122
Line Pressure Test.....................................................67 On Board Diagnosis Logic.......................................122
Road Test...................................................................68 Possible Cause........................................................122
CONTENTS (Cont'd)
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................163
Procedure ................................................................123 DTC P0745 LINE PRESSURE SOLENOID VALVE ...169
Wiring Diagram - AT - ENGSS ................................124 Description ...............................................................169
Diagnostic Procedure ..............................................125 On Board Diagnosis Logic.......................................169
DTC P0731 A/T 1ST GEAR FUNCTION ....................127 Possible Cause........................................................170
Description ...............................................................127 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................127 Procedure ................................................................170
Possible Cause........................................................128 Wiring Diagram - AT - LPSV....................................171
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................172
Procedure ................................................................128 DTC P0750 SHIFT SOLENOID VALVE A ..................175
Wiring Diagram - AT - 1ST ......................................130 Description ...............................................................175
Diagnostic Procedure ..............................................131 On Board Diagnosis Logic.......................................175
DTC P0732 A/T 2ND GEAR FUNCTION....................133 Possible Cause........................................................175
Description ...............................................................133 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................133 Procedure ................................................................176
Possible Cause........................................................134 Wiring Diagram - AT - SSV/A ..................................177
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................178
Procedure ................................................................134 DTC P0755 SHIFT SOLENOID VALVE B ..................180
Wiring Diagram - AT - 2ND......................................136 Description ...............................................................180
Diagnostic Procedure ..............................................137 On Board Diagnosis Logic.......................................180
DTC P0733 A/T 3RD GEAR FUNCTION....................139 Possible Cause........................................................180
Description ...............................................................139 Diagnostic Trouble Code (DTC) Confirmation
On Board Diagnosis Logic.......................................139 Procedure ................................................................181
Possible Cause........................................................140 Wiring Diagram - AT - SSV/B ..................................182
Diagnostic Trouble Code (DTC) Confirmation Diagnostic Procedure ..............................................183
Procedure ................................................................140 DTC P1705 ACCELERATOR PEDAL POSITION
Wiring Diagram - AT - 3RD......................................142 SENSOR (THROTTLE POSITION SENSOR).............185
Diagnostic Procedure ..............................................143 Description ...............................................................185
DTC P0734 A/T 4TH GEAR FUNCTION ....................145 On Board Diagnosis Logic.......................................186
Description ...............................................................145 Possible Cause........................................................186
On Board Diagnosis Logic.......................................146 Diagnostic Trouble Code (DTC) Confirmation
Possible Cause........................................................146 Procedure ................................................................187
Diagnostic Trouble Code (DTC) Confirmation Wiring Diagram - AT - TPS......................................188
Procedure ................................................................147 Diagnostic Procedure ..............................................189
Wiring Diagram - AT - 4TH ......................................149 DTC P1760 OVERRUN CLUTCH SOLENOID
Diagnostic Procedure ..............................................150 VALVE..........................................................................192
DTC P0740 TORQUE CONVERTER CLUTCH Description ...............................................................192
SOLENOID VALVE......................................................154 On Board Diagnosis Logic.......................................192
Description ...............................................................154 Possible Cause........................................................192
On Board Diagnosis Logic.......................................154 Diagnostic Trouble Code (DTC) Confirmation
Possible Cause........................................................154 Procedure ................................................................193
Diagnostic Trouble Code (DTC) Confirmation Wiring Diagram - AT - OVRCSV..............................194
Procedure ................................................................155 Diagnostic Procedure ..............................................195
Wiring Diagram - AT - TCV......................................156 DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
Diagnostic Procedure ..............................................157 SENSOR CIRCUIT AND TCM POWER SOURCE) ....197
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP) ....159 Description ...............................................................197
Description ...............................................................159 On Board Diagnosis Logic.......................................198
On Board Diagnosis Logic.......................................159 Possible Cause........................................................198
Possible Cause........................................................160 Diagnostic Trouble Code (DTC) Confirmation
Diagnostic Trouble Code (DTC) Confirmation Procedure ................................................................198
Procedure ................................................................160 Wiring Diagram - AT - BA/FTS ................................199
Wiring Diagram - AT - TCCSIG ...............................162 Diagnostic Procedure ..............................................200
AT-2
CONTENTS (Cont'd)
DTC VEHICLE SPEED SENSOR.MTR .......................204 8. Vehicle Cannot Be Started From D1 ...................241
Description ...............................................................204 9. A/T Does Not Shift: D1 -> D2 or Does Not
On Board Diagnosis Logic.......................................204 Kickdown: D4 -> D2..................................................244 GI
Possible Cause........................................................204 10. A/T Does Not Shift: D2 -> D3.............................247
Diagnostic Trouble Code (DTC) Confirmation 11. A/T Does Not Shift: D3 -> D4 .............................250 MA
Procedure ................................................................205 12. A/T Does Not Perform Lock-up .........................253
Wiring Diagram - AT - VSSMTR..............................206 13. A/T Does Not Hold Lock-up Condition ..............255
Diagnostic Procedure ..............................................207 14. Lock-up Is Not Released...................................257 EM
DTC U1000 CAN COMMUNICATION LINE ...............209 15. Engine Speed Does Not Return To Idle (Light
Description ...............................................................209 Braking D4 -> D3).....................................................258
On Board Diagnosis Logic.......................................209 16. Vehicle Does Not Start From D1 .......................261 LC
Possible Cause........................................................209 17. A/T Does Not Shift: D4 -> D3, When 3rd
Diagnostic Trouble Code (DTC) Confirmation Position Switch ON -> OFF.....................................262
EC
Procedure ................................................................210 18. A/T Does Not Shift: D3 -> 22, When Selector
Wiring Diagram - AT - CAN .....................................211 Lever D -> 2nd Position ..........................................263
Diagnostic Procedure ..............................................212 19. A/T Does Not Shift: 22 -> 11, When Selector FE
DTC POWER TRAIN REVOLUTION SENSOR ..........213 Lever 2nd -> 1st Position ........................................264
Description ...............................................................213 20. Vehicle Does Not Decelerate By Engine
On Board Diagnosis Logic.......................................213 Brake........................................................................265
Diagnostic Trouble Code (DTC) Confirmation 21. TCM Self-diagnosis Does Not Activate [PNP
Procedure ................................................................214 & 3rd Position Switches and APP Sensor* Circuit
Wiring Diagram - AT - P/T SEN-01 .........................215 Checks] ....................................................................265
AX
Diagnostic Procedure ..............................................216 A/T SHIFT LOCK SYSTEM.........................................272
Component Inspection.............................................217 Description ...............................................................272 SU
DTC CONTROL UNIT (RAM), CONTROL UNIT Shift Lock System Electrical Parts Location............272
(ROM)...........................................................................218 Wiring Diagram - SHIFT -........................................273
Description ...............................................................218 Shift Lock Control Unit Reference Values...............274 BR
On Board Diagnosis Logic.......................................218 Component Inspection.............................................275
Possible Cause........................................................218 SHIFT CONTROL SYSTEM ........................................277
Diagnostic Trouble Code (DTC) Confirmation Control Cable...........................................................277 ST
Procedure ................................................................218 ON-VEHICLE SERVICE ..............................................278
Diagnostic Procedure ..............................................219 Control Valve Assembly and Accumulators.............278
RS
DTC CONTROL UNIT (EEP ROM) .............................220 Revolution Sensor Replacement .............................279
Description ...............................................................220 Park/Neutral Position (PNP) Switch Adjustment .....279
On Board Diagnosis Logic.......................................220 Control Cable Adjustment........................................280 BT
Possible Cause........................................................220 Differential Side Oil Seal Replacement ...................280
Diagnostic Trouble Code (DTC) Confirmation REMOVAL AND INSTALLATION ...............................281
Procedure ................................................................220 Removal...................................................................281 HA
Diagnostic Procedure ..............................................221 Installation................................................................282
TROUBLE DIAGNOSES FOR SYMPTOMS ...............222 OVERHAUL .................................................................284
Wiring Diagram - AT - NONDTC .............................222 Components.............................................................284
SC
1. A/T CHECK Indicator Lamp Does Not Come Oil Channel ..............................................................287
On ............................................................................224 Locations of Adjusting Shims, Needle Bearings, EL
2. Engine Cannot Be Started In P and N Position..227 Thrust Washers and Snap Rings ............................288
3. In P Position, Vehicle Moves Forward or DISASSEMBLY............................................................289
Backward When Pushed .........................................228 REPAIR FOR COMPONENT PARTS .........................303 IDX
4. In N Position, Vehicle Moves ..............................229 Manual Shaft............................................................303
5. Large Shock. N -> R Position .............................232 Oil Pump ..................................................................306
6. Vehicle Does Not Creep Backward In R Control Valve Assembly...........................................310
Position ....................................................................234 Control Valve Upper Body .......................................318
7. Vehicle Does Not Creep Forward in D, 2nd or Control Valve Lower Body .......................................322
1st Position ..............................................................238 Reverse Clutch ........................................................324
AT-3
CONTENTS (Cont'd)
High Clutch ..............................................................327 Control Valves..........................................................378
Forward and Overrun Clutches ...............................332 Accumulator .............................................................378
Low & Reverse Brake..............................................337 Clutch and Brakes ...................................................379
Rear Internal Gear, Forward Clutch Hub and Final Drive................................................................381
Overrun Clutch Hub.................................................340 Planetary Carrier and Oil Pump ..............................382
Output Shaft, Idler Gear, Reduction Pinion Gear Input Shaft ...............................................................383
and Bearing Retainer...............................................344 Reduction Pinion Gear ............................................383
Band Servo Piston Assembly ..................................349 Band Servo ..............................................................384
Final Drive................................................................354 Output Shaft.............................................................384
ASSEMBLY..................................................................358 Bearing Retainer......................................................385
Assembly (1)............................................................358 Total End Play..........................................................385
Adjustment (1) .........................................................358 Reverse Clutch End Play ........................................385
Assembly (2)............................................................363 Removal and Installation .........................................386
Adjustment (2) .........................................................369 Shift Solenoid Valves...............................................386
Assembly (3)............................................................371 Solenoid Valves .......................................................386
SERVICE DATA AND SPECIFICATIONS (SDS) .......377 A/T Fluid Temperature Sensor.................................386
General Specifications.............................................377 Revolution Sensor (For Speed Sensor) ..................386
Shift Schedule..........................................................377 Dropping Resistor ....................................................386
Stall Revolution........................................................377 Power Train Revolution Sensor...............................386
Line Pressure...........................................................378
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-127
MA
A/T 2ND GR FNCTN P0732 AT-133
EM
A/T 3RD GR FNCTN P0733 AT-139
A/T 4TH GR FNCTN P0734 AT-145
LC
A/T TCC S/V FNCTN P0744 AT-159
ATF TEMP SEN/CIRC P0710 AT-111
EC
CAN COMM CIRCUIT U1000 AT-209
ENGINE SPEED SIG P0725 AT-122
FE
L/PRESS SOL/CIRC P0745 AT-169
O/R CLTCH SOL/CIRC P1760 AT-192
PNP SW/CIRC P0705 AT-105
SFT SOL A/CIRC*2 P0750 AT-175 AX
SFT SOL B/CIRC*2 P0755 AT-180
TCC SOLENOID/CIRC P0740 AT-154 SU
TP SEN/CIRC A/T*2 P1705 AT-185
VEH SPD SEN/CIR AT*3 P0720 AT-117 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-105
P0710 ATF TEMP SEN/CIRC AT-111
P0720 VEH SPD SEN/CIR AT*3 AT-117
P0725 ENGINE SPEED SIG AT-122
P0731 A/T 1ST GR FNCTN AT-127
P0732 A/T 2ND GR FNCTN AT-133
P0733 A/T 3RD GR FNCTN AT-139
P0734 A/T 4TH GR FNCTN AT-145
P0740 TCC SOLENOID/CIRC AT-154
P0744 A/T TCC S/V FNCTN AT-159
P0745 L/PRESS SOL/CIRC AT-169
P0750 SFT SOL A/CIRC*2 AT-175
P0755 SFT SOL B/CIRC*2 AT-180
P1705 TP SEN/CIRC A/T*2 AT-185
P1760 O/R CLTCH SOL/CIRC AT-192
U1000 CAN COMM CIRCUIT AT-209
*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. 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. The SRS MA
system composition which is available to INFINITI I35 is as follows (The composition varies according to
optional equipment.):
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