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GI
AUTOMATIC TRANSMISSION
MA
SECTION AT EM
LC
EC
FE
CONTENTS CL
TROUBLE DIAGNOSIS - INDEX ....................................4 TROUBLE DIAGNOSIS - GENERAL
MT
Alphabetical & P No. Index for DTC ...........................4 DESCRIPTION ...............................................................83
PRECAUTIONS ...............................................................6 Symptom Chart..........................................................83
Precautions for Supplemental Restraint System TCM Terminals and Reference Value........................95
(SRS) AIR BAG and SEAT BELT CAN COMMUNICATION ...............................................98
PRE-TENSIONER ......................................................6 System Description....................................................98
Precautions for On Board Diagnostic (OBD) TROUBLE DIAGNOSIS FOR POWER SUPPLY..........99 TF
System of A/T and Engine...........................................6 Wiring Diagram - AT - MAIN......................................99
Precautions ..................................................................6 Diagnostic Procedure ..............................................100
Service Notice or Precautions .....................................8 DTC P0705 PARK/NEUTRAL POSITION SWITCH ...102
PD
Wiring Diagrams and Trouble Diagnosis.....................9 Description ...............................................................102
PREPARATION .............................................................10 Wiring Diagram - AT - PNP/SW...............................104 AX
Special Service Tools ................................................10 Diagnostic Procedure ..............................................105
OVERALL SYSTEM ......................................................12 Component Inspection.............................................106
A/T Electrical Parts Location .....................................12 DTC P0710 A/T FLUID TEMPERATURE SENSOR SU
Circuit Diagram ..........................................................13 CIRCUIT .......................................................................108
Cross-sectional View .................................................14 Description ...............................................................108
Hydraulic Control Circuit............................................15 Wiring Diagram - AT - FTS ......................................110 BR
Shift Mechanism ........................................................16 Diagnostic Procedure .............................................. 111
Control System ..........................................................25 Component Inspection.............................................113 ST
Control Mechanism....................................................26 DTC P0720 VEHICLE SPEED SENSOR.A/T
Control Valve .............................................................31 (REVOLUTION SENSOR) ...........................................114
ON BOARD DIAGNOSTIC SYSTEM Description ...............................................................114 RS
DESCRIPTION ...............................................................33 Wiring Diagram - AT - VSSA/T ................................116
Introduction ................................................................33 Diagnostic Procedure ..............................................117
OBD-II Function for A/T System................................33 Component Inspection.............................................118 BT
One or Two Trip Detection Logic of OBD-II ..............33 DTC P0725 ENGINE SPEED SIGNAL .......................119
OBD-II Diagnostic Trouble Code (DTC) ....................33 Description ...............................................................119
Malfunction Indicator Lamp (MIL)..............................37 Wiring Diagram - AT - ENGSS ................................120
HA
CONSULT-II ...............................................................37 Diagnostic Procedure ..............................................121
Diagnostic Procedure Without CONSULT-II..............48 DTC P0731 IMPROPER SHIFTING TO 1ST GEAR SC
TROUBLE DIAGNOSIS - INTRODUCTION..................55 POSITION ....................................................................123
Introduction ................................................................55 Description ...............................................................123
Work Flow..................................................................59 Wiring Diagram - AT - 1ST ......................................126 EL
TROUBLE DIAGNOSIS - BASIC INSPECTION ...........61 Diagnostic Procedure ..............................................127
A/T Fluid Check .........................................................61 Component Inspection.............................................128
Stall Test ....................................................................61 DTC P0732 IMPROPER SHIFTING TO 2ND GEAR
IDX
Line Pressure Test.....................................................64 POSITION ....................................................................129
Road Test...................................................................65 Description ...............................................................129
CONTENTS (Cont'd)
Wiring Diagram - AT - 2ND......................................132 Description ...............................................................185
Diagnostic Procedure ..............................................133 Wiring Diagram - AT - OVRCSV..............................187
Component Inspection.............................................134 Diagnostic Procedure ..............................................188
DTC P0733 IMPROPER SHIFTING TO 3RD GEAR Component Inspection.............................................189
POSITION ....................................................................135 DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
Description ...............................................................135 SENSOR CIRCUIT AND TCM POWER SOURCE) ....190
Wiring Diagram - AT - 3RD......................................138 Description ...............................................................190
Diagnostic Procedure ..............................................139 Wiring Diagram - AT - BA/FTS ................................192
Component Inspection.............................................140 Diagnostic Procedure ..............................................193
DTC P0734 IMPROPER SHIFTING TO 4TH GEAR Component Inspection.............................................196
POSITION ....................................................................141 DTC VEHICLE SPEED SENSOR.MTR .......................197
Description ...............................................................141 Description ...............................................................197
Wiring Diagram - AT - 4TH ......................................145 Wiring Diagram - AT - VSSMTR..............................199
Diagnostic Procedure ..............................................146 Diagnostic Procedure ..............................................200
Component Inspection.............................................150 DTC U1000 CAN COMMUNICATION LINE ...............202
DTC P0740 TORQUE CONVERTER CLUTCH Description ...............................................................202
SOLENOID VALVE......................................................151 On Board Diagnosis Logic.......................................202
Description ...............................................................151 Possible Cause........................................................202
Wiring Diagram - AT - TCV......................................153 Diagnostic Trouble Code (DTC) Confirmation
Diagnostic Procedure ..............................................154 Procedure ................................................................203
Component Inspection.............................................155 Wiring Diagram - AT - CAN .....................................204
DTC P0744 IMPROPER LOCK-UP OPERATION ......156 Diagnostic Procedure ..............................................205
Description ...............................................................156 DTC TURBINE REVOLUTION SENSOR ....................206
Wiring Diagram - AT - TCCSIG ...............................159 Description ...............................................................206
Diagnostic Procedure ..............................................160 Wiring Diagram - AT - TRSA/T ................................208
Component Inspection.............................................164 Diagnostic Procedure ..............................................209
DTC P0745 LINE PRESSURE SOLENOID VALVE ...165 Component Inspection.............................................210
Description ...............................................................165 DTC CONTROL UNIT (RAM), CONTROL UNIT
Wiring Diagram - AT - LPSV....................................167 (ROM)...........................................................................211
Diagnostic Procedure ..............................................168 Description ...............................................................211
Component Inspection.............................................170 Diagnostic Procedure ..............................................212
DTC P0750 SHIFT SOLENOID VALVE A ..................171 DTC CONTROL UNIT (EEP ROM) .............................213
Description ...............................................................171 Description ...............................................................213
Wiring Diagram - AT - SSV/A ..................................172 Diagnostic Procedure ..............................................214
Diagnostic Procedure ..............................................173 TROUBLE DIAGNOSES FOR SYMPTOMS ...............215
Component Inspection.............................................174 Wiring Diagram - AT - NONDTC .............................215
DTC P0755 SHIFT SOLENOID VALVE B ..................175 O/D OFF Indicator Lamp Does Not Come On........218
Description ...............................................................175 Engine Cannot Be Started In P and N
Wiring Diagram - AT - SSV/B ..................................176 Position ....................................................................220
Diagnostic Procedure ..............................................177 In P Position, Vehicle Moves Forward Or
Component Inspection.............................................178 Backward When Pushed .........................................221
DTC P1705 ACCELERATOR PEDAL POSITION In N Position, Vehicle Moves................................222
SENSOR (THROTTLE POSITION SENSOR).............179 Large Shock. N -> R Position............................224
Description ...............................................................179 Vehicle Does Not Creep Backward In R
On Board Diagnosis Logic.......................................180 Position ....................................................................226
Possible Cause........................................................180 Vehicle Does Not Creep Forward In D, 2 Or
Diagnostic Trouble Code (DTC) Confirmation 1 Position ..............................................................229
Procedure ................................................................181 Vehicle Cannot Be Started From D1 .......................232
Wiring Diagram - AT - TPS......................................182 A/T Does Not Shift: D1 -> D2 Or Does Not
Diagnostic Procedure ..............................................183 Kickdown: D4 -> D2..................................................235
DTC P1760 OVERRUN CLUTCH SOLENOID A/T Does Not Shift: D2 -> D3...................................238
VALVE..........................................................................185 A/T Does Not Shift: D3 -> D4...................................241
AT-2
CONTENTS (Cont'd) GI
A/T Does Not Perform Lock-up ...............................244 Oil Channel ..............................................................281
A/T Does Not Hold Lock-up Condition ....................246 Locations of Needle Bearings, Thrust Washers MA
Lock-up Is Not Released .........................................248 and Snap Rings .......................................................282
Engine Speed Does Not Return To Idle (Light DISASSEMBLY............................................................283
Braking D4 -> D3).....................................................249 REPAIR FOR COMPONENT PARTS .........................294 EM
Vehicle Does Not Start From D1 .............................251 Oil Pump ..................................................................294
A/T Does Not Shift: D4 -> D3, When Overdrive Control Valve Assembly...........................................298
Control Switch ON -> OFF ................................252 Control Valve Upper Body .......................................304
LC
A/T Does Not Shift: D3 -> 22, When Selector Control Valve Lower Body .......................................309
Lever D -> 2 Position.........................................253 Reverse Clutch ........................................................311 EC
A/T Does Not Shift: 22 -> 11, When Selector High Clutch ..............................................................314
Lever 2 -> 1 Position .........................................254 Forward and Overrun Clutches ...............................317
Vehicle Does Not Decelerate By Engine Brake ......255 Low & Reverse Brake..............................................321 FE
TCM Self-diagnosis Does Not Activate (PNP, Forward Clutch Drum Assembly..............................325
Overdrive Control and Accelerator Pedal Position Rear Internal Gear and Forward Clutch Hub ..........327
Sensor Circuit Checks)............................................255 Band Servo Piston Assembly ..................................330
CL
A/T SHIFT LOCK SYSTEM.........................................262 Parking Pawl Components ......................................334
Description ...............................................................262 ASSEMBLY..................................................................336 MT
Wiring Diagram - SHIFT -........................................263 Assembly (1)............................................................336
Diagnostic Procedure ..............................................264 Adjustment ...............................................................344
KEY INTERLOCK CABLE ..........................................267 Assembly (2)............................................................346
Components.............................................................267 SERVICE DATA AND SPECIFICATIONS (SDS) .......353
Removal...................................................................267 General Specifications.............................................353
Installation................................................................268 Shift Schedule..........................................................353 TF
ON-VEHICLE SERVICE ..............................................269 Stall Revolution........................................................353
Control Valve Assembly and Accumulators.............269 Line Pressure...........................................................353
PD
Revolution Sensor Replacement .............................270 Return Springs.........................................................354
Turbine Revolution Sensor Replacement................270 Accumulator O-ring..................................................355
Rear Oil Seal Replacement.....................................270 Clutches and Brakes ...............................................355 AX
Rear Oil Seal and Companion Flange Oil Seal Oil Pump and Low One-way Clutch ........................357
Replacement............................................................271 Total End Play..........................................................357
Parking Components Inspection..............................271 Reverse Clutch Drum End Play ..............................358 SU
Park/Neutral Position Switch Adjustment ................272 Removal and Installation .........................................358
Manual Control Linkage Adjustment........................272 Shift Solenoid Valves...............................................358
REMOVAL AND INSTALLATION ...............................273 Solenoid Valves .......................................................358
BR
Removal...................................................................273 A/T Fluid Temperature Sensor.................................358
Installation................................................................274 Turbine Revolution Sensor ......................................358 ST
OVERHAUL .................................................................278 Revolution Sensor ...................................................359
Components.............................................................278 Dropping Resistor ....................................................359
RS
BT
HA
SC
EL
IDX
AT-3
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC
Alphabetical & P No. Index for DTC NAAT0179
ALPHABETICAL INDEX FOR DTC NAAT0179S01
DTC
Items
CONSULT-II Reference page
(CONSULT-II screen terms)
GST*1
A/T 1ST GR FNCTN P0731 AT-123
A/T 2ND GR FNCTN P0732 AT-129
A/T 3RD GR FNCTN P0733 AT-135
A/T 4TH GR FNCTN P0734 AT-141
A/T TCC S/V FNCTN P0744 AT-156
ATF TEMP SEN/CIRC P0710 AT-108
ENGINE SPEED SIG P0725 AT-119
L/PRESS SOL/CIRC P0745 AT-165
O/R CLTCH SOL/CIRC P1760 AT-185
PNP SW/CIRC P0705 AT-102
SFT SOL A/CIRC*2 P0750 AT-171
SFT SOL B/CIRC*2 P0755 AT-175
TCC SOLENOID/CIRC P0740 AT-151
TP SEN/CIRC A/T*2 P1705 AT-179
VEH SPD SEN/CIR AT*3 P0720 AT-114
*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-4
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC (Cont'd)
P NO. INDEX FOR DTC =NAAT0179S02
GI
DTC
Items
CONSULT-II (CONSULT-II screen terms)
Reference page MA
GST*1
P0705 PNP SW/CIRC AT-102 EM
P0710 ATF TEMP SEN/CIRC AT-108
P0720 VEH SPD SEN/CIR AT*3 AT-114 LC
P0725 ENGINE SPEED SIG AT-119
P0731 A/T 1ST GR FNCTN AT-123 EC
P0732 A/T 2ND GR FNCTN AT-129
P0733 A/T 3RD GR FNCTN AT-135 FE
P0734 A/T 4TH GR FNCTN AT-141
P0740 TCC SOLENOID/CIRC AT-151 CL
P0744 A/T TCC S/V FNCTN AT-156
P0745 L/PRESS SOL/CIRC AT-165
MT
P0750 SFT SOL A/CIRC*2 AT-171
P0755 SFT SOL B/CIRC*2 AT-175
P1705 TP SEN/CIRC A/T*2 AT-179
TF
P1760 O/R CLTCH SOL/CIRC AT-185
*1: These numbers are prescribed by SAE J2012.
*2: When the fail-safe operation occurs, the MIL illuminates.
PD
*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.
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
AT-5
PRECAUTIONS
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Precautions for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" NAAT0001
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
collision. The SRS composition which is available to NISSAN MODEL R50 is as follows:
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