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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 ...............................................................81
PRECAUTIONS ...............................................................6 Symptom Chart..........................................................81
Precautions for Supplemental Restraint System TCM Terminals and Reference Value........................92
(SRS) AIR BAG and SEAT BELT TROUBLE DIAGNOSIS FOR POWER SUPPLY..........96
PRE-TENSIONER ......................................................6 Wiring Diagram - AT - MAIN......................................96
Precautions for On Board Diagnostic (OBD) Diagnostic Procedure ................................................97 TF
System of A/T and Engine...........................................6 DTC P0705 PARK/NEUTRAL POSITION SWITCH .....99
Precautions ..................................................................6 Description .................................................................99
Service Notice or Precautions .....................................8 Wiring Diagram - AT - PNP/SW...............................101
PD
Wiring Diagrams and Trouble Diagnosis.....................9 Diagnostic Procedure ..............................................102
PREPARATION .............................................................10 Component Inspection.............................................103 AX
Special Service Tools ................................................10 DTC P0710 A/T FLUID TEMPERATURE SENSOR
OVERALL SYSTEM ......................................................12 CIRCUIT .......................................................................105
A/T Electrical Parts Location .....................................12 Description ...............................................................105 SU
Circuit Diagram ..........................................................13 Wiring Diagram - AT - FTS ......................................107
Cross-sectional View .................................................14 Diagnostic Procedure ..............................................108
Hydraulic Control Circuit............................................15 Component Inspection.............................................110 BR
Shift Mechanism ........................................................16 DTC P0720 VEHICLE SPEED SENSOR.A/T
Control System ..........................................................25 (REVOLUTION SENSOR) ........................................... 111 ST
Control Mechanism....................................................26 Description ............................................................... 111
Control Valve .............................................................31 Wiring Diagram - AT - VSSA/T ................................113
ON BOARD DIAGNOSTIC SYSTEM Diagnostic Procedure ..............................................114 RS
DESCRIPTION ...............................................................33 Component Inspection.............................................115
Introduction ................................................................33 DTC P0725 ENGINE SPEED SIGNAL .......................116
OBD-II Function for A/T System................................33 Description ...............................................................116 BT
One or Two Trip Detection Logic of OBD-II ..............33 Wiring Diagram - AT - ENGSS ................................117
OBD-II Diagnostic Trouble Code (DTC) ....................33 Diagnostic Procedure ..............................................118
Malfunction Indicator Lamp (MIL)..............................37 DTC P0731 IMPROPER SHIFTING TO 1ST GEAR
HA
CONSULT-II ...............................................................37 POSITION ....................................................................120
Diagnostic Procedure Without CONSULT-II..............46 Description ...............................................................120 SC
TROUBLE DIAGNOSIS - INTRODUCTION..................53 Wiring Diagram - AT - 1ST ......................................123
Introduction ................................................................53 Diagnostic Procedure ..............................................124
Work Flow..................................................................57 Component Inspection.............................................125 EL
TROUBLE DIAGNOSIS - BASIC INSPECTION ...........59 DTC P0732 IMPROPER SHIFTING TO 2ND GEAR
A/T Fluid Check .........................................................59 POSITION ....................................................................126
Stall Test ....................................................................59 Description ...............................................................126
IDX
Line Pressure Test.....................................................62 Wiring Diagram - AT - 2ND......................................129
Road Test...................................................................63 Diagnostic Procedure ..............................................130
CONTENTS (Cont'd)
Component Inspection.............................................131 Description ...............................................................190
DTC P0733 IMPROPER SHIFTING TO 3RD GEAR Wiring Diagram - AT - BA/FTS ................................192
POSITION ....................................................................132 Diagnostic Procedure ..............................................193
Description ...............................................................132 Component Inspection.............................................196
Wiring Diagram - AT - 3RD......................................135 DTC VEHICLE SPEED SENSOR.MTR .......................197
Diagnostic Procedure ..............................................136 Description ...............................................................197
Component Inspection.............................................137 Wiring Diagram - AT - VSSMTR..............................199
DTC P0734 IMPROPER SHIFTING TO 4TH GEAR Diagnostic Procedure ..............................................200
POSITION ....................................................................138 DTC TURBINE REVOLUTION SENSOR ....................202
Description ...............................................................138 Description ...............................................................202
Wiring Diagram - AT - 4TH ......................................142 Wiring Diagram - AT - TRSA/T ................................204
Diagnostic Procedure ..............................................143 Diagnostic Procedure ..............................................205
Component Inspection.............................................147 Component Inspection.............................................206
DTC P0740 TORQUE CONVERTER CLUTCH DTC A/T COMMUNICATION LINE .............................207
SOLENOID VALVE......................................................148 Description ...............................................................207
Description ...............................................................148 Wiring Diagram - AT - LAN......................................209
Wiring Diagram - AT - TCV......................................150 Diagnostic Procedure ..............................................210
Diagnostic Procedure ..............................................151 DTC CONTROL UNIT (RAM), CONTROL UNIT
Component Inspection.............................................152 (ROM)...........................................................................211
DTC P0744 IMPROPER LOCK-UP OPERATION ......153 Description ...............................................................211
Description ...............................................................153 Diagnostic Procedure ..............................................212
Wiring Diagram - AT - TCCSIG ...............................156 DTC CONTROL UNIT (EEP ROM) .............................213
Diagnostic Procedure ..............................................157 Description ...............................................................213
Component Inspection.............................................161 Diagnostic Procedure ..............................................214
DTC P0745 LINE PRESSURE SOLENOID VALVE ...162 TROUBLE DIAGNOSES FOR SYMPTOMS ...............215
Description ...............................................................162 Wiring Diagram - AT - NONDTC .............................215
Wiring Diagram - AT - LPSV....................................164 1. O/D OFF Indicator Lamp Does Not Come On....218
Diagnostic Procedure ..............................................165 2. Engine Cannot Be Started In P and N
Component Inspection.............................................167 Position ....................................................................221
DTC P0750 SHIFT SOLENOID VALVE A ..................168 3. In P Position, Vehicle Moves Forward Or
Description ...............................................................168 Backward When Pushed .........................................222
Wiring Diagram - AT - SSV/A ..................................169 4. In N Position, Vehicle Moves ...........................223
Diagnostic Procedure ..............................................170 5. Large Shock. N -> R Position .......................225
Component Inspection.............................................171 6. Vehicle Does Not Creep Backward In R
DTC P0755 SHIFT SOLENOID VALVE B ..................172 Position ....................................................................227
Description ...............................................................172 7. Vehicle Does Not Creep Forward In D, 2
Wiring Diagram - AT - SSV/B ..................................173 Or 1 Position.........................................................230
Diagnostic Procedure ..............................................174 8. Vehicle Cannot Be Started From D1 ...................233
Component Inspection.............................................175 9. A/T Does Not Shift: D1 -> D2 Or Does Not
DTC P1705 THROTTLE POSITION SENSOR ...........176 Kickdown: D4 -> D2..................................................236
Description ...............................................................176 10. A/T Does Not Shift: D2 -> D3.............................239
Wiring Diagram - AT - TPS......................................179 11. A/T Does Not Shift: D3 -> D4 .............................242
Diagnostic Procedure ..............................................180 12. A/T Does Not Perform Lock-up .........................245
Component Inspection.............................................184 13. A/T Does Not Hold Lock-up Condition ..............247
DTC P1760 OVERRUN CLUTCH SOLENOID 14. Lock-up Is Not Released...................................249
VALVE..........................................................................185 15. Engine Speed Does Not Return To Idle (Light
Description ...............................................................185 Braking D4 -> D3).....................................................250
Wiring Diagram - AT - OVRCSV..............................187 16. Vehicle Does Not Start From D1 .......................252
Diagnostic Procedure ..............................................188 17. A/T Does Not Shift: D4 -> D3, When
Component Inspection.............................................189 Overdrive Control Switch ON -> OFF ...............253
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP 18. A/T Does Not Shift: D3 -> 22, When Selector
SENSOR CIRCUIT AND TCM POWER SOURCE) ....190 Lever D -> 2 Position.........................................254
AT-2
CONTENTS (Cont'd) GI
19. A/T Does Not Shift: 22 -> 11, When Selector Oil Pump ..................................................................298
Lever 2 -> 1 Position .........................................255 Control Valve Assembly...........................................302 MA
20. Vehicle Does Not Decelerate By Engine Control Valve Upper Body .......................................308
Brake........................................................................256 Control Valve Lower Body .......................................313
21. TCM Self-diagnosis Does Not Activate (PNP, Reverse Clutch ........................................................315 EM
Overdrive Control and Throttle Position Switches High Clutch ..............................................................318
Circuit Checks) ........................................................257 Forward and Overrun Clutches ...............................321
A/T SHIFT LOCK SYSTEM.........................................265 Low & Reverse Brake..............................................325
LC
Description ...............................................................265 Forward Clutch Drum Assembly..............................329
Wiring Diagram - SHIFT -........................................266 Rear Internal Gear and Forward Clutch Hub ..........331 EC
Diagnostic Procedure ..............................................267 Band Servo Piston Assembly ..................................334
KEY INTERLOCK CABLE ..........................................271 Parking Pawl Components ......................................338
Components.............................................................271 ASSEMBLY..................................................................340 FE
Removal...................................................................271 Assembly (1)............................................................340
Installation................................................................272 Adjustment ...............................................................348
ON-VEHICLE SERVICE ..............................................273 Assembly (2)............................................................350
CL
Control Valve Assembly and Accumulators.............273 SERVICE DATA AND SPECIFICATIONS (SDS) .......357
Revolution Sensor Replacement .............................274 General Specifications.............................................357 MT
Turbine Revolution Sensor Replacement................274 Shift Schedule..........................................................357
Rear Oil Seal Replacement.....................................274 Stall Revolution........................................................357
Rear Oil Seal and Companion Flange Oil Seal Line Pressure...........................................................357
Replacement............................................................275 Return Springs.........................................................358
Parking Components Inspection..............................275 Accumulator O-ring..................................................359
Park/Neutral Position Switch Adjustment ................276 Clutches and Brakes ...............................................359 TF
Manual Control Linkage Adjustment........................276 Oil Pump and Low One-way Clutch ........................361
REMOVAL AND INSTALLATION ...............................277 Total End Play..........................................................361
PD
Removal...................................................................277 Reverse Clutch Drum End Play ..............................362
Installation................................................................278 Removal and Installation .........................................362
OVERHAUL .................................................................282 Shift Solenoid Valves...............................................362 AX
Components.............................................................282 Solenoid Valves .......................................................362
Oil Channel ..............................................................285 A/T Fluid Temperature Sensor.................................362
Locations of Needle Bearings, Thrust Washers Turbine Revolution Sensor ......................................362 SU
and Snap Rings .......................................................286 Revolution Sensor ...................................................363
DISASSEMBLY............................................................287 Dropping Resistor ....................................................363
REPAIR FOR COMPONENT PARTS .........................298
BR
ST
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-120
A/T 2ND GR FNCTN P0732 AT-126
A/T 3RD GR FNCTN P0733 AT-132
A/T 4TH GR FNCTN P0734 AT-138
A/T TCC S/V FNCTN P0744 AT-153
ATF TEMP SEN/CIRC P0710 AT-105
ENGINE SPEED SIG P0725 AT-116
L/PRESS SOL/CIRC P0745 AT-162
O/R CLTCH SOL/CIRC P1760 AT-185
PNP SW/CIRC P0705 AT-99
SFT SOL A/CIRC*2 P0750 AT-168
SFT SOL B/CIRC*2 P0755 AT-172
TCC SOLENOID/CIRC P0740 AT-148
TP SEN/CIRC A/T*2 P1705 AT-176
VEH SPD SEN/CIR AT*3 P0720 AT-111
*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-99 EM
P0710 ATF TEMP SEN/CIRC AT-105
P0720 VEH SPD SEN/CIR AT*3 AT-111 LC
P0725 ENGINE SPEED SIG AT-116
P0731 A/T 1ST GR FNCTN AT-120 EC
P0732 A/T 2ND GR FNCTN AT-126
P0733 A/T 3RD GR FNCTN AT-132 FE
P0734 A/T 4TH GR FNCTN AT-138
P0740 TCC SOLENOID/CIRC AT-148 CL
P0744 A/T TCC S/V FNCTN AT-153
P0745 L/PRESS SOL/CIRC AT-162
MT
P0750 SFT SOL A/CIRC*2 AT-168
P0755 SFT SOL B/CIRC*2 AT-172
P1705 TP SEN/CIRC A/T*2 AT-176
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 system composition which is available to NISSAN MODEL R50 is as follows:
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