2001 NISSAN X-TRAIL Line pressure

AT-1
AUTOMATIC TRANSAXLE
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION
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AUTOMATIC TRANSAXLE
PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions for On Board Diagnostic (EURO-OBD)
System of A/T and Engine — Euro-OBD — ............. 5
Precautions for Trouble Diagnosis ........................... 5
Precautions for Harness Repair ............................... 5
Precautions .............................................................. 6
Service Notice or Precautions .................................. 7
Wiring Diagrams and Trouble Diagnosis .................. 8
PREPARATION ........................................................... 9
Special Service Tools ............................................... 9
Commercial Service Tools ...................................... 12
A/T FLUID ................................................................. 13
Checking A/T Fluid ................................................. 13
Changing A/T Fluid ............................................. ... 13
OVERALL SYSTEM ................................................. 14
A/T Electrical Parts Location .................................. 14
Circuit Diagram ...................................................... 15
Cross-Sectional View ............................................. 16
Hydraulic Control Circuit ........................................ 17
Shift Mechanism ..................................................... 18
Control System ....................................................... 28
Control Mechanism ................................................ 29
Control Valve .......................................................... 34
EURO-OBD
TROUBLE DIAGNOSIS — INDEX ........................... 35
Alphabetical & P No. Index for DTC ....................... 35
ON BOARD DIAGNOSTIC SYSTEM DESCRIP-
TION .......................................................................... 37
Introduction ............................................................ 37
EURO-OBD Function for A/T System .................... 37
One or Two Trip Detection Logic of EURO-OBD ... 37
EURO-OBD Diagnostic Trouble Code (DTC) ......... 37
Malfunction Indicator lamp (MIL) ............................ 41
CONSULT-II ........................................................... 41
Diagnostic Procedure Without CONSULT-II ........... 50TROUBLE DIAGNOSIS — INTRODUCTION ........... 56
Introduction ............................................................. 56
Work Flow ............................................................... 60
TROUBLE DIAGNOSIS — BASIC INSPECTION .... 63
A/T Fluid Check ...................................................... 63
Stall Test ................................................................. 64
Line Pressure Test .................................................. 67
Road Test ............................................................... 68
TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION .......................................................................... 86
Symptom Chart ....................................................... 86
TCM Terminals and Reference Value ...................106
CAN COMMUNICATION .........................................109
System Description ...............................................109
DTC P0705 PARK/NEUTRAL POSITION (PNP)
SWITCH ..................................................................110
Description ............................................................110
Wiring Diagram — AT — PNP/SW .......................112
Diagnostic Procedure ...........................................113
Component Inspection ..........................................115
DTC P0710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................116
Description ............................................................116
Wiring Diagram — AT — FTS ..............................118
Diagnostic Procedure ...........................................119
Component Inspection ..........................................121
DTC P0720 VEHICLE SPEED SENSOR·A/T (REV-
OLUTION SENSOR) ...............................................122
Description ............................................................122
Wiring Diagram — AT — VSSA/T ........................124
Diagnostic Procedure ...........................................125
DTC P0725 ENGINE SPEED SIGNAL ...................127
Description ............................................................127
Wiring Diagram — AT — ENGSS .........................128
Diagnostic Procedure ...........................................129
DTC P0731 A/T 1ST GEAR FUNCTION ...............
.131
Description ............................................................131
Wiring Diagram — AT — 1ST ...............................134
Diagnostic Procedure ...........................................135
Component Inspection ..........................................136

AT-2
DTC P0732 A/T 2ND GEAR FUNCTION ................137
Description ............................................................137
Wiring Diagram — AT — 2ND ..............................140
Diagnostic Procedure ...........................................141
Component Inspection ..........................................142
DTC P0733 A/T 3RD GEAR FUNCTION ................143
Description ............................................................143
Wiring Diagram — AT — 3RD ..............................146
Diagnostic Procedure ...........................................147
Component Inspection ..........................................148
DTC P0734 A/T 4TH GEAR FUNCTION ................149
Description ............................................................149
Wiring Diagram — AT — 4TH ...............................152
Diagnostic Procedure ...........................................153
Component Inspection ..........................................156
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE .................................................158
Description ............................................................158
Wiring Diagram — AT — TCV ..............................160
Diagnostic Procedure ...........................................161
Component Inspection ..........................................162
DTC P0745 LINE PRESSURE SOLENOID VALVE .163
Description ............................................................163
Wiring Diagram — AT — LPSV ............................165
Diagnostic Procedure ...........................................166
Component Inspection ..........................................168
DTC P0750 SHIFT SOLENOID VALVE A ...............170
Description ............................................................170
Wiring Diagram — AT — SSV/A ...........................172
Diagnostic Procedure ...........................................173
Component Inspection ..........................................174
DTC P0755 SHIFT SOLENOID VALVE B ...............175
Description ............................................................175
Wiring Diagram — AT — SSV/B ...........................177
Diagnostic Procedure ...........................................178
Component Inspection ..........................................179
DTC P1705 ACCELERATOR PEDAL POSITION
(APP) SENSOR .......................................................180
Description ............................................................180
Wiring Diagram — AT — TPS ..............................182
Diagnostic Procedure ...........................................183
DTC P1760 OVERRUN CLUTCH SOLENOID
VALVE .....................................................................185
Description ............................................................185
Wiring Diagram — AT — OVRCSV ......................187
Diagnostic Procedure ...........................................188
Component Inspection ..........................................189
DTC U1000 CAN COMMUNICATION LINE ...........
.190
Description ............................................................190
On Board Diagnosis Logic ....................................190
DTC Confirmation Procedure ...............................190
Wiring Diagram — AT — CAN ..............................191
Diagnostic Procedure ...........................................192
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE) .193
Description ............................................................193
Wiring Diagram — AT — BA/FTS .........................195
Diagnostic Procedure ...........................................196
Component Inspection ..........................................198DTC VEHICLE SPEED SENSOR MTR ...................199
Description ............................................................199
Wiring Diagram — AT — VSSMTR .......................201
Diagnostic Procedure ............................................202
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM) ......................................................................203
Description ............................................................203
Diagnostic Procedure ............................................203
DTC CONTROL UNIT(EEPROM) ...........................205
Description ............................................................205
Diagnostic Procedure ............................................206
TROUBLE DIAGNOSES FOR SYMPTOMS ...........207
Wiring Diagram — AT — NONDTC ......................207
O/D OFF Indicator Lamp Does Not Come On ......209
Engine Cannot Be Started In “P” and “N” Position .211
In “P” Position, Vehicle Moves Forward Or Back-
ward When Pushed ...............................................212
In “N” Position, Vehicle Moves ..............................213
Large Shock. “N” → “R” Position ..........................214
Vehicle Does Not Creep Backward In “R” Position .215
Vehicle Does Not Creep Forward In “D”, “2” Or “1”
Position .................................................................218
Vehicle Cannot Be Started From D
1 .....................220
A/T Does Not Shift: D
1→ D2 Or Does Not Kickdown:
D
4→ D2 ...............................................................
.223
A/T Does Not Shift: D
2→ D3 ................................225
A/T Does Not Shift: D
3→ D4 ................................227
A/T Does Not Perform Lock-up .............................229
A/T Does Not Hold Lock-up Condition ..................230
Lock-up Is Not Released .......................................232
Engine Speed Does Not Return To Idle (Light Brak-
ing D
4→ D3 ) ........................................................233
Vehicle Does Not Start From D
1 ...........................234
A / T D o e s N o t S h i f t : D
4→ D3 , W h e n O v e r d r i v e C o n -
trol Switch “ON” → “OFF” .....................................236
A/T Does Not Shift: D
3→ 22 , W h e n S e l e c t o r L e v e r
“D” → “2” Position .................................................237
A/T Does Not Shift: 2
2→ 11 , When Selector Lever
“2” → “1” Position ..................................................238
Vehicle Does Not Decelerate By Engine Brake ....240
TCM Self-diagnosis Does Not Activate .................241
EXC.F/EURO-OBD
ON BOARD DIAGNOSTIC SYSTEM DESCRIP-
TION ........................................................................247
CONSULT-II ..........................................................247
Diagnostic Procedure Without CONSULT-II .........253
TROUBLE DIAGNOSIS — INTRODUCTION .........258
Introduction ...........................................................258
Work Flow .............................................................262
TROUBLE DIAGNOSIS — BASIC INSPECTION ...264
A/T Fluid Check ....................................................264
Stall Test ................................................................265
Line Pressure Test ................................................268
Road Test ..............................................................269
TROUBLE DIAGNOSIS — GENERAL DESCRIP-

AT-3
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AT TION ........................................................................ 287
Symptom Chart .................................................... 287
TCM Terminals and Reference Value ................... 306
CAN COMMUNICATION ........................................ 309
System Description .............................................. 309
TROUBLE DIAGNOSES FOR SYMPTOMS .......... 310
Wiring Diagram — AT — NONDTC ...................... 310
O/D OFF Indicator Lamp Does Not Come On ..... 312
Engine Cannot Be Started In “P” and “N” Position . 314
In “P” Position, Vehicle Moves Forward Or Back-
ward When Pushed .............................................. 315
In “N” Position, Vehicle Moves ............................. 315
Large Shock. “N” → “R” Position .......................... 317
Vehicle Does Not Creep Backward In “R” Position . 318
Vehicle Does Not Creep Forward In “D”, “2” Or “1”
Position ................................................................ 321
Vehicle Cannot Be Started From D
1 ..................... 323
A/T Does Not Shift: D
1→ D2 Or Does Not Kick down:
D
4→ D2 ............................................................... 326
A/T Does Not Shift: D
2→ D3 ............................... 328
A/T Does Not Shift: D
3→ D4 ............................... 330
A/T Does Not Perform Lock-up ............................ 332
A/T Does Not Hold Lock-up Condition ................. 333
Lock-up Is Not Released ...................................... 335
Engine Speed Does Not Return To Idle (Light Brak-
ing D
4→ D3 ) ....................................................... 336
Vehicle Does Not Start From D
1 ........................... 338
A/T Does Not Shift: D
4→ D3 , When Overdrive Con-
trol Switch “ON” → “OFF” ..................................... 339
A/T Does Not Shift: D
3→ 22 , W h e n S e l e c t o r L e v e r
“D”→ “2” Position ................................................ 340
A/T Does Not Shift: 2
2→ 11 , W h e n S e l e c t o r L e v e r
“2” → “1” Position ................................................. 341
Vehicle Does Not Decelerate By Engine Brake ... 343
TCM Self-diagnosis Does Not Activate ................ 344
ALL
MAIN POWER SUPPLY AND GROUND CIRCUIT . 350
Wiring Diagram — AT — MAIN ............................ 350
Diagnostic Procedure ........................................... 351
VEHICLE SPEED SENSOR·A/T (REVOLUTION
SENSOR) ................................................................ 353
Description ........................................................... 353
Wiring Diagram — AT — VSSA/T ........................ 355
Diagnostic Procedure ........................................... 356
DTC VEHICLE SPEED SENSOR MTR .................. 358
Description ........................................................... 358
Wiring Diagram — AT — VSSMTR ...................... 360
Diagnostic Procedure ........................................... 361
ACCELE RATOR PEDAL POSITION (APP) SEN-
SOR ........................................................................ 362
Description ........................................................... 362
Wiring Diagram — AT — TPS .............................. 364
Diagnostic Procedure ........................................... 365
SHIFT SOLENOID VALVE A .................................. 367
Description ........................................................... 367
Wiring Diagram — AT — SSV/A .......................... 369Diagnostic Procedure ...........................................370
Component Inspection ..........................................371
SHIFT SOLENOID VALVE B ..................................372
Description ............................................................372
Wiring Diagram — AT — SSV/B ...........................374
Diagnostic Procedure ...........................................375
Component Inspection ..........................................376
OVERRUN CLUTCH SOLENOID VALVE ...............377
Description ............................................................377
Wiring Diagram — AT — OVRCSV ......................378
Diagnostic Procedure ...........................................379
Component Inspection ..........................................380
TORQUE CONVERTER CLUTCH SOLENOID
VALVE .....................................................................381
Description ............................................................381
Wiring Diagram — AT — TCV ..............................383
Diagnostic Procedure ...........................................384
Component Inspection ..........................................385
BATT/FLUID TEMP SEN (A/T FLUID TEMP SEN-
SOR CIRCUIT AND TCM POWER SOURCE) .......386
Description ............................................................386
Wiring Diagram — AT — BA/FTS .........................388
Diagnostic Procedure ...........................................389
Component Inspection ..........................................391
ENGINE SPEED SIGNAL .......................................392
Description ............................................................392
Wiring Diagram — AT — ENGSS .........................393
Diagnostic Procedure ...........................................394
LINE PRESSURE SOLENOID VALVE ..................
.396
Description ............................................................396
Wiring Diagram — AT — LPSV ............................398
Diagnostic Procedure ...........................................399
Component Inspection ..........................................401
CAN COMMUNICATION LINE ...............................403
Description ............................................................403
On Board Diagnosis Logic ....................................403
Self-Diagnosis Code Confirmation Procedure ......403
Wiring Diagram — AT — CAN ..............................404
Diagnostic Procedure ...........................................405
A/T SHIFT LOCK SYSTEM ....................................406
Description ............................................................406
Shift Lock System Electrical Parts Location .........406
Wiring Diagram — SHIFT — ................................407
Diagnostic Procedure ...........................................408
KEY INTERLOCK CABLE ......................................412
Components .........................................................412
Removal ...............................................................412
Installation ............................................................413
ON-VEHICLE SERVICE ..........................................414
Control Valve Assembly and Accumulators ..........414
Control Cable Adjustment .....................................416
Park/Neutral Position (PNP) Switch Adjustment ..416
Differential Side Oil Seal Replacement ................417
Revolution Sensor Replacement ..........................417
REMOVAL AND INSTALLATION ...........................418
Removal ...............................................................418
Installation ............................................................419
OVERHAUL ............................................................421
Components .........................................................421

AT-4
Oil Channel ...........................................................424
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ..........................425
DISASSEMBLY .......................................................426
Disassembly .........................................................426
REPAIR FOR COMPONENT PARTS ......................441
Manual Shaft ........................................................441
Oil Pump ...............................................................444
Control Valve Assembly ........................................448
Control Valve Upper Body ....................................457
Control Valve Lower Body ....................................461
Reverse Clutch .....................................................463
High Clutch ...........................................................466
Forward and Overrun Clutches ............................471
Low & Reverse Brake ...........................................476
Rear Internal Gear, Forward Clutch Hub and Over-
run Clutch Hub ......................................................479
Output Shaft, Idler Gear, Reduction Pinion Gear and
Bearing Retainer ...................................................483
Band Servo Piston Assembly ...............................488
Final Drive ............................................................493
ASSEMBLY .............................................................498
Assembly (1) .........................................................498
Adjustment (1) ......................................................499
Assembly (2) .........................................................504Adjustment (2) .......................................................510
Assembly (3) .........................................................514
SERVICE DATA AND SPECIFICATIONS (SDS) ....521
General Specifications ......................................... .521
Shift Schedule .......................................................521
Stall Revolution .....................................................522
Line Pressure ........................................................522
Control Valves .......................................................522
Accumulator ..........................................................523
Clutch and Brakes .................................................524
Final Drive .............................................................526
Planetary Carrier and Oil Pump ............................527
Input Shaft .............................................................528
Reduction Pinion Gear ..........................................528
Band Servo ...........................................................529
Output Shaft ..................................................
........529
Bearing Retainer ...................................................529
Total End Play .......................................................529
Reverse Clutch End Play ......................................530
Removal and Installation .......................................530
Shift Solenoid Valves ............................................530
Solenoid Valves ....................................................530
A/T Fluid Temperature Sensor ..............................531
Revolution Sensor .................................................531
Dropping Resistor .................................................531

PREPARATION
AT-9
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PREPARATIONPFP:00100
Special Service ToolsECS004Q5
Tool number
Tool nameDescription
KV381054S0 Puller
●Removing differential side oil seals
●Removing differential side bearing outer race
●Removing idler gear bearing outer race
a: 250 mm (9.84 in)
b: 160 mm (6.30 in)
ST33400001 Drift
●Installing differential side oil seal
F04B
● Installing oil seal on oil pump housing
a: 60 mm (2.36 in) dia.
b: 47 mm (1.85 in) dia.
ST2505S001 Oil pressure
gauge set
1. ST25051001 Oil pressure
gauge
2. ST25052000 Hose
3. ST25053000 Joint pipe
4. ST25054000 Adapter
5. ST25055000 Adapter
●Measuring line pressure
ST27180001 Puller
●Removing idler gear
a: 100 mm (3.94 in)
b: 110 mm (4.33 in)
c: M8 x 1.25P
ST23540000 Pin punch
●Removing and installing parking rod plate and
manual plate pins
a: 2.3 mm (0.091 in) dia.
b: 4 mm (0.16 in) dia.
ST25710000 Pin punch
●Aligning groove of manual shaft and hole of
transmission case
a: 2 mm (0.08 in) dia.
NT414
NT086
NT097
NT424
NT442
NT410

AT-28
OVERALL SYSTEM
Control System
ECS004QE
OUTLINE
The automatic transaxle senses vehicle operating conditions through various switches and sensors. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM
SWITCHES & SENSORS TCM ACTUATORS
PNP switch
Accelerator pedal position (APP)
sensor
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Vehicle speed sensor
Overdrive control switch
Stop lamp switchShift control
Line pressure control
Lock-up control
Overrun clutch control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
controlShift solenoid valve A
Shift solenoid valve B
Overrun clutch solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
O/D OFF indicator lamp
SCIA0690E

OVERALL SYSTEM
AT-29
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TCM FUNCTION
The function of the TCM is to:
●Receive input signals sent from various switches and sensors.
●Determine required line pressure, shifting point, lock-up operation, and engine brake operation.
●Send required output signals to the respective solenoids.
INPUT/OUTPUT SIGNAL OF TCM
Control MechanismECS004QF
LINE PRESSURE CONTROL
TCM has various line pressure control characteristics to match the driving conditions.
An ON-OFF duty signal is sent to the line pressure solenoid valve based on TCM characteristics.
Hydraulic pressure on the clutch and brake is electronically controlled through the line pressure solenoid valve
to accommodate engine torque. This results in smooth shift operation.
Normal Control
The line pressure to throttle opening characteristics is set for suitable
clutch operation.
Sensors, switches and solenoid
valvesFunction
InputPNP switch Detects select lever position and sends a signal to TCM.
Accelerator pedal position (APP)
sensorDetects accelerator pedal position sensor as throttle position signal and sends
a signal from ECM to TCM.
Closed throttle position signalDetects throttle valve's fully-closed position and sends a signal from ECM to
TCM.
Wide open throttle position signalDetects a throttle valve position of greater than 1/2 of full throttle and sends a
signal from ECM to TCM.
Engine speed signal From ECM.
A/T fluid temperature sensor Detects transmission fluid temperature and sends a signal to TCM.
Revolution sensor Detects output shaft rpm and sends a signal to TCM.
Vehicle speed sensorUsed as an auxiliary vehicle speed sensor. Sends a signal when revolution
sensor (installed on transmission) malfunctions.
Overdrive control switchSends a signal, which prohibits a shift to “D
4 ” (overdrive) position, to the
TCM.
Stop lamp switch Releases lock-up system when depressing pedal in lock-up condition.
OutputShift solenoid valve A/BSelects shifting point suited to driving conditions in relation to a signal sent
from TCM.
Line pressure solenoid valveRegulates (or decreases) line pressure suited to driving conditions in relation
to a signal sent from TCM.
Torque converter clutch solenoid
valveRegulates (or decreases) lock-up pressure suited to driving conditions in rela-
tion to a signal sent from TCM.
Overrun clutch solenoid valveControls an “engine brake” effect suited to driving conditions in relation to a
signal sent from TCM.
O/D OFF indicator lamp Shows TCM faults when A/T control components malfunction.
SAT003J

AT-30
OVERALL SYSTEM
Back-up Control (Engine Brake)
If the selector lever is shifted to “2” position while driving in D4 (OD)
or D
3 , great driving force is applied to the clutch inside the transmis-
sion. Clutch operating pressure (line pressure) must be increased to
deal with this driving force.
During Shift Change
The line pressure is temporarily reduced corresponding to a change
in engine torque when shifting gears (that is, when the shift solenoid
valve is switched for clutch operation) to reduce shifting shock.
At Low Fluid Temperature
●Fluid viscosity and frictional characteristics of the clutch facing change with fluid temperature. Clutch
engaging or band-contacting pressure is compensated for, according to fluid temperature, to stabilize
shifting quality.
●The line pressure is reduced below 60°C (140°F) to prevent
shifting shock due to low viscosity of automatic transmission
fluid when temperature is low.
●Line pressure is increased to a maximum irrespective of the
throttle opening when fluid temperature drops to −10°C (14°F).
This pressure rise is adopted to prevent a delay in clutch and
brake operation due to extreme drop of fluid viscosity at low
temperature.
SHIFT CONTROL
The shift is regulated entirely by electronic control to accommodate vehicle speed and varying engine opera-
tions. This is accomplished by electrical signals transmitted by the revolution sensor and throttle position sen-
sor. This results in improved acceleration performance and fuel economy.
SAT004J
SAT005J
SAT006J
SAT007J