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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) CAN Communication Unit..........................................98 TF
System of A/T and Engine...........................................6 TROUBLE DIAGNOSIS FOR POWER SUPPLY........102
Precautions ..................................................................6 Wiring Diagram - AT - MAIN....................................102
Service Notice or Precautions .....................................8 Diagnostic Procedure ..............................................103
PD
Wiring Diagrams and Trouble Diagnosis.....................9 DTC P0705 PARK/NEUTRAL POSITION SWITCH ...105
PREPARATION .............................................................10 Description ...............................................................105 AX
Special Service Tools ................................................10 Wiring Diagram - AT - PNP/SW...............................107
OVERALL SYSTEM ......................................................12 Diagnostic Procedure ..............................................108
A/T Electrical Parts Location .....................................12 Component Inspection.............................................109 SU
Circuit Diagram ..........................................................13 DTC P0710 A/T FLUID TEMPERATURE SENSOR
Cross-sectional View .................................................14 CIRCUIT ....................................................................... 111
Hydraulic Control Circuit............................................15 Description ............................................................... 111 BR
Shift Mechanism ........................................................16 Wiring Diagram - AT - FTS ......................................113
Control System ..........................................................25 Diagnostic Procedure ..............................................114 ST
Control Mechanism....................................................26 Component Inspection.............................................116
Control Valve .............................................................31 DTC P0720 VEHICLE SPEED SENSOR.A/T
ON BOARD DIAGNOSTIC SYSTEM (REVOLUTION SENSOR) ...........................................117 RS
DESCRIPTION ...............................................................33 Description ...............................................................117
Introduction ................................................................33 Wiring Diagram - AT - VSSA/T ................................119
OBD-II Function for A/T System................................33 Diagnostic Procedure ..............................................120 BT
One or Two Trip Detection Logic of OBD-II ..............33 Component Inspection.............................................121
OBD-II Diagnostic Trouble Code (DTC) ....................33 DTC P0725 ENGINE SPEED SIGNAL .......................122
Malfunction Indicator Lamp (MIL)..............................37 Description ...............................................................122
HA
CONSULT-II ...............................................................37 Wiring Diagram - AT - ENGSS ................................123
Diagnostic Procedure Without CONSULT-II..............48 Diagnostic Procedure ..............................................124 SC
TROUBLE DIAGNOSIS - INTRODUCTION..................55 DTC P0731 IMPROPER SHIFTING TO 1ST GEAR
Introduction ................................................................55 POSITION ....................................................................126
Work Flow..................................................................59 Description ...............................................................126 EL
TROUBLE DIAGNOSIS - BASIC INSPECTION ...........61 Wiring Diagram - AT - 1ST ......................................129
A/T Fluid Check .........................................................61 Diagnostic Procedure ..............................................130
Stall Test ....................................................................61 Component Inspection.............................................131
IDX
Line Pressure Test.....................................................64 DTC P0732 IMPROPER SHIFTING TO 2ND GEAR
Road Test...................................................................65 POSITION ....................................................................132
CONTENTS (Cont'd)
Description ...............................................................132 DTC P1760 OVERRUN CLUTCH SOLENOID
Wiring Diagram - AT - 2ND......................................135 VALVE..........................................................................188
Diagnostic Procedure ..............................................136 Description ...............................................................188
Component Inspection.............................................137 Wiring Diagram - AT - OVRCSV..............................190
DTC P0733 IMPROPER SHIFTING TO 3RD GEAR Diagnostic Procedure ..............................................191
POSITION ....................................................................138 Component Inspection.............................................192
Description ...............................................................138 DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
Wiring Diagram - AT - 3RD......................................141 SENSOR CIRCUIT AND TCM POWER SOURCE) ....193
Diagnostic Procedure ..............................................142 Description ...............................................................193
Component Inspection.............................................143 Wiring Diagram - AT - BA/FTS ................................195
DTC P0734 IMPROPER SHIFTING TO 4TH GEAR Diagnostic Procedure ..............................................196
POSITION ....................................................................144 Component Inspection.............................................199
Description ...............................................................144 DTC VEHICLE SPEED SENSOR.MTR .......................200
Wiring Diagram - AT - 4TH ......................................148 Description ...............................................................200
Diagnostic Procedure ..............................................149 Wiring Diagram - AT - VSSMTR..............................202
Component Inspection.............................................153 Diagnostic Procedure ..............................................203
DTC P0740 TORQUE CONVERTER CLUTCH DTC U1000 CAN COMMUNICATION LINE ...............205
SOLENOID VALVE......................................................154 Description ...............................................................205
Description ...............................................................154 On Board Diagnosis Logic.......................................205
Wiring Diagram - AT - TCV......................................156 Possible Cause........................................................205
Diagnostic Procedure ..............................................157 Diagnostic Trouble Code (DTC) Confirmation
Component Inspection.............................................158 Procedure ................................................................206
DTC P0744 IMPROPER LOCK-UP OPERATION ......159 Wiring Diagram - AT - CAN .....................................207
Description ...............................................................159 Diagnostic Procedure ..............................................208
Wiring Diagram - AT - TCCSIG ...............................162 DTC TURBINE REVOLUTION SENSOR ....................209
Diagnostic Procedure ..............................................163 Description ...............................................................209
Component Inspection.............................................167 Wiring Diagram - AT - TRSA/T ................................211
DTC P0745 LINE PRESSURE SOLENOID VALVE ...168 Diagnostic Procedure ..............................................212
Description ...............................................................168 Component Inspection.............................................213
Wiring Diagram - AT - LPSV....................................170 DTC CONTROL UNIT (RAM), CONTROL UNIT
Diagnostic Procedure ..............................................171 (ROM)...........................................................................214
Component Inspection.............................................173 Description ...............................................................214
DTC P0750 SHIFT SOLENOID VALVE A ..................174 Diagnostic Procedure ..............................................215
Description ...............................................................174 DTC CONTROL UNIT (EEP ROM) .............................216
Wiring Diagram - AT - SSV/A ..................................175 Description ...............................................................216
Diagnostic Procedure ..............................................176 Diagnostic Procedure ..............................................217
Component Inspection.............................................177 TROUBLE DIAGNOSES FOR SYMPTOMS ...............218
DTC P0755 SHIFT SOLENOID VALVE B ..................178 Wiring Diagram - AT - NONDTC .............................218
Description ...............................................................178 O/D OFF Indicator Lamp Does Not Come On........221
Wiring Diagram - AT - SSV/B ..................................179 Engine Cannot Be Started In P and N
Diagnostic Procedure ..............................................180 Position ....................................................................223
Component Inspection.............................................181 In P Position, Vehicle Moves Forward Or
DTC P1705 ACCELERATOR PEDAL POSITION Backward When Pushed .........................................224
SENSOR (THROTTLE POSITION SENSOR).............182 In N Position, Vehicle Moves................................225
Description ...............................................................182 Large Shock. N -> R Position............................227
On Board Diagnosis Logic.......................................183 Vehicle Does Not Creep Backward In R
Possible Cause........................................................183 Position ....................................................................229
Diagnostic Trouble Code (DTC) Confirmation Vehicle Does Not Creep Forward In D, 2 Or
Procedure ................................................................184 1 Position ..............................................................232
Wiring Diagram - AT - TPS......................................185 Vehicle Cannot Be Started From D1 .......................235
Diagnostic Procedure ..............................................186 A/T Does Not Shift: D1 -> D2 Or Does Not
Kickdown: D4 -> D2..................................................238
AT-2
CONTENTS (Cont'd) GI
A/T Does Not Shift: D2 -> D3...................................241 Components.............................................................281
A/T Does Not Shift: D3 -> D4...................................244 Oil Channel ..............................................................284 MA
A/T Does Not Perform Lock-up ...............................247 Locations of Needle Bearings, Thrust Washers
A/T Does Not Hold Lock-up Condition ....................249 and Snap Rings .......................................................285
Lock-up Is Not Released .........................................251 DISASSEMBLY............................................................286 EM
Engine Speed Does Not Return To Idle (Light REPAIR FOR COMPONENT PARTS .........................297
Braking D4 -> D3).....................................................252 Oil Pump ..................................................................297
Vehicle Does Not Start From D1 .............................254 Control Valve Assembly...........................................301
LC
A/T Does Not Shift: D4 -> D3, When Overdrive Control Valve Upper Body .......................................307
Control Switch ON -> OFF ................................255 Control Valve Lower Body .......................................312 EC
A/T Does Not Shift: D3 -> 22, When Selector Reverse Clutch ........................................................314
Lever D -> 2 Position.........................................256 High Clutch ..............................................................317
A/T Does Not Shift: 22 -> 11, When Selector Forward and Overrun Clutches ...............................320 FE
Lever 2 -> 1 Position .........................................257 Low & Reverse Brake..............................................324
Vehicle Does Not Decelerate By Engine Brake ......258 Forward Clutch Drum Assembly..............................328
TCM Self-diagnosis Does Not Activate (PNP, Rear Internal Gear and Forward Clutch Hub ..........330
CL
Overdrive Control and Accelerator Pedal Position Band Servo Piston Assembly ..................................333
Sensor Circuit Checks)............................................258 Parking Pawl Components ......................................337 MT
A/T SHIFT LOCK SYSTEM.........................................265 ASSEMBLY..................................................................339
Description ...............................................................265 Assembly (1)............................................................339
Wiring Diagram - SHIFT -........................................266 Adjustment ...............................................................347
Diagnostic Procedure ..............................................267 Assembly (2)............................................................349
KEY INTERLOCK CABLE ..........................................270 SERVICE DATA AND SPECIFICATIONS (SDS) .......356
Components.............................................................270 General Specifications.............................................356 TF
Removal...................................................................270 Shift Schedule..........................................................356
Installation................................................................271 Stall Revolution........................................................356
PD
ON-VEHICLE SERVICE ..............................................272 Line Pressure...........................................................356
Control Valve Assembly and Accumulators.............272 Return Springs.........................................................357
Revolution Sensor Replacement .............................273 Accumulator O-ring..................................................358 AX
Turbine Revolution Sensor Replacement................273 Clutches and Brakes ...............................................358
Rear Oil Seal Replacement.....................................273 Oil Pump and Low One-way Clutch ........................360
Rear Oil Seal and Companion Flange Oil Seal Total End Play..........................................................360 SU
Replacement............................................................274 Reverse Clutch Drum End Play ..............................361
Parking Components Inspection..............................274 Removal and Installation .........................................361
Park/Neutral Position Switch Adjustment ................275 Shift Solenoid Valves...............................................361
BR
Manual Control Linkage Adjustment........................275 Solenoid Valves .......................................................361
REMOVAL AND INSTALLATION ...............................276 A/T Fluid Temperature Sensor.................................361 ST
Removal...................................................................276 Turbine Revolution Sensor ......................................361
Installation................................................................277 Revolution Sensor ...................................................362
OVERHAUL .................................................................281 Dropping Resistor ....................................................362 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-126
A/T 2ND GR FNCTN P0732 AT-132
A/T 3RD GR FNCTN P0733 AT-138
A/T 4TH GR FNCTN P0734 AT-144
A/T TCC S/V FNCTN P0744 AT-159
ATF TEMP SEN/CIRC P0710 AT-111
ENGINE SPEED SIG P0725 AT-122
L/PRESS SOL/CIRC P0745 AT-168
O/R CLTCH SOL/CIRC P1760 AT-188
PNP SW/CIRC P0705 AT-105
SFT SOL A/CIRC*2 P0750 AT-174
SFT SOL B/CIRC*2 P0755 AT-178
TCC SOLENOID/CIRC P0740 AT-154
TP SEN/CIRC A/T*2 P1705 AT-182
VEH SPD SEN/CIR AT*3 P0720 AT-117
*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-105 EM
P0710 ATF TEMP SEN/CIRC AT-111
P0720 VEH SPD SEN/CIR AT*3 AT-117 LC
P0725 ENGINE SPEED SIG AT-122
P0731 A/T 1ST GR FNCTN AT-126 EC
P0732 A/T 2ND GR FNCTN AT-132
P0733 A/T 3RD GR FNCTN AT-138 FE
P0734 A/T 4TH GR FNCTN AT-144
P0740 TCC SOLENOID/CIRC AT-154 CL
P0744 A/T TCC S/V FNCTN AT-159
P0745 L/PRESS SOL/CIRC AT-168
MT
P0750 SFT SOL A/CIRC*2 AT-174
P0755 SFT SOL B/CIRC*2 AT-178
P1705 TP SEN/CIRC A/T*2 AT-182
TF
P1760 O/R CLTCH SOL/CIRC AT-188
*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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