2005 NISSAN X-TRAIL brake sensor

AT-4 Wiring Diagram — AT — TPS ..............................347
Diagnostic Procedure ...........................................348
SHIFT SOLENOID VALVE A ..................................350
Description ............................................................350
CONSULT-II Reference Value ..............................350
On Board Diagnosis Logic ....................................350
Possible Cause .....................................................350
DTC Confirmation Procedure ...............................350
Wiring Diagram — AT — SSV/A ...........................352
Diagnostic Procedure ...........................................353
Component Inspection ..........................................355
SHIFT SOLENOID VALVE B ..................................356
Description ............................................................356
CONSULT-II Reference Value ..............................356
On Board Diagnosis Logic ....................................356
DTC Confirmation Procedure ...............................356
Wiring Diagram — AT — SSV/B ...........................358
Diagnostic Procedure ...........................................359
Component Inspection ..........................................361
OVERRUN CLUTCH SOLENOID VALVE ...............362
Description ............................................................362
CONSULT-II Reference Value ..............................362
On Board Diagnosis Logic ....................................362
Possible Cause .....................................................362
DTC Confirmation Procedure ...............................362
Wiring Diagram — AT — OVRCSV ......................364
Diagnostic Procedure ...........................................365
Component Inspection ..........................................367
TORQUE CONVERTER CLUTCH SOLENOID
VALVE .....................................................................368
Description ............................................................368
CONSULT-II Reference Value ..............................368
On Board Diagnosis Logic ....................................368
Possible Cause .....................................................368
DTC Confirmation Procedure ...............................368
Wiring Diagram — AT — TCV ..............................370
Diagnostic Procedure ...........................................371
Component Inspection ..........................................373
BATT/FLUID TEMP SEN (A/T FLUID TEMP SEN-
SOR CIRCUIT AND TCM POWER SOURCE) ........374
Description ............................................................374
CONSULT-II Reference Value ..............................374
On Board Diagnosis Logic ....................................374
Possible Cause .....................................................374
DTC Confirmation Procedure ...............................375
Wiring Diagram — AT — BA/FTS .........................376
Diagnostic Procedure ...........................................377
Component Inspection ..........................................381
ENGINE SPEED SIGNAL .......................................382
Description ............................................................382
CONSULT-II Reference Value ..............................382
On Board Diagnosis Logic ....................................382
DTC Confirmation Procedure ...............................382
Wiring Diagram — AT — ENGSS .........................383
Diagnostic Procedure ...........................................384
LINE PRESSURE SOLENOID VALVE ...................387
Description ............................................................387
CONSULT-II Reference Value ..............................387
On Board Diagnosis Logic ....................................387Possible Cause .....................................................387
DTC Confirmation Procedure ................................387
Wiring Diagram — AT — LPSV ............................389
Diagnostic Procedure ............................................390
Component Inspection ..........................................393
MAIN POWER SUPPLY AND GROUND CIRCUIT .394
Description ............................................................394
On Board Diagnosis Logic ....................................394
Possible Cause .....................................................394
DTC Confirmation Procedure ................................394
Wiring Diagram — AT — MAIN .............................395
Diagnostic Procedure ............................................396
A/T SHIFT LOCK SYSTEM .....................................398
Description ............................................................398
Shift Lock System Electrical Parts Location ..........398
Wiring Diagram — SHIFT .....................................399
Diagnostic Procedure ............................................400
KEY INTERLOCK CABLE ......................................402
Components ..........................................................402
Removal ................................................................402
Installation .............................................................403
ON-VEHICLE SERVICE ..........................................404
Control Valve Assembly and Accumulators ..........404
Park/Neutral Position (PNP) Switch ......................408
Differential Side Oil Seal Replacement .................410
Revolution Sensor Replacement ..........................412
REMOVAL AND INSTALLATION ............................413
Removal ................................................................413
Installation .............................................................415
OVERHAUL .............................................................416
Components ..........................................................416
Oil Channel ...........................................................422
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings ..........................423
DISASSEMBLY .......................................................424
Disassembly ..........................................................424
REPAIR FOR COMPONENT PARTS ......................440
Manual Shaft .........................................................440
Oil Pump ...............................................................443
Control Valve Assembly ........................................448
Control Valve Upper Body .....................................457
Control Valve Lower Body .....................................461
Reverse Clutch .....................................................464
High Clutch ...........................................................469
Forward and Overrun Clutches .............................475
Low & Reverse Brake ...........................................483
Rear Internal Gear, Forward Clutch Hub and Over-
run Clutch Hub ......................................................487
Output Shaft, Idler Gear, Reduction Pinion Gear and
Bearing Retainer ...................................................491
Band Servo Piston Assembly ................................497
Final Drive .............................................................503
ASSEMBLY .............................................................507
Assembly (1) .........................................................507
Adjustment (1) .......................................................508
Assembly (2) .........................................................513
Adjustment (2) .......................................................520
Assembly (3) .........................................................523

AT-5
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SERVICE DATA AND SPECIFICATIONS (SDS) .... 530
General Specifications ......................................... 530
Shift Schedule ...................................................... 530
Stall Revolution .................................................... 531
Line Pressure ....................................................... 531
Control Valves ...................................................... 531
Accumulator ......................................................... 532
Clutch and Brakes ................................................ 533
Final Drive ............................................................ 535
Planetary Carrier and Oil Pump ........................... 536
Input Shaft ............................................................ 537
Reduction Pinion Gear ......................................... 537Band Servo ...........................................................538
Output Shaft .........................................................538
Bearing Retainer ...................................................538
Total End Play .......................................................538
Reverse Clutch End Play ......................................539
Removal and Installation ......................................539
Shift Solenoid Valves ............................................539
Solenoid Valves ....................................................539
A/T Fluid Temperature Sensor ..............................540
Revolution Sensor ................................................540
Dropping Resistor .................................................540

OVERALL SYSTEM
AT-31
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TCM FunctionECS004QE
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.
CONTROL SYSTEM 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 signal
Stop lamp switch signalShift control
Line pressure control
Lock-up control
Overrun clutch control
Timing control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
control
CAN systemShift 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
SCIA4505E

AT-34
OVERALL SYSTEM

Input/Output Signal of TCMECS00CTC
*1: Spare for vehicle speed sensor·A/T (revolution sensor)
*2: Spare for accelerator pedal position signal
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
*4: Used as a condition for starting self-diagnostics; if self-diagnostics are not started, it is judged that there is some kind of error.
*5: Input by CAN communications.
*6: Output by CAN communications.
Line Pressure ControlECS004QF

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.
Control itemLine
pressure
controlVehicle
speed
controlShift
controlLock-up
controlEngine
brake
controlFail-safe
function
(*3)Self-diag-
nostics
function
InputAccelerator pedal position signalXXXXXXX
Vehicle speed sensor A/T
(Revolution sensor)XXXX XX
Vehicle speed sensor MTR
(*1)XXXX X
Closed throttle position signal
(*5)(*2) X (*2) X X (*4) X
Wide open throttle position signal
(*5)(*2) X (*2) X (*4) X
Engine speed signal X X
PNP switch XXXXXX(*4) X
Stop lamp switch signal
(*5)XXX(*4) X
A/T fluid temperature sensors X X X X X
TCM power supply voltage signal XX
Out-
putShift solenoid valve A/B X X X
Line pressure solenoid X X X
Torque converter clutch solenoid
valveXXX
Overrun clutch solenoid valve X X X X
O/D OFF indicator lamp
(*6)X
SAT003J

OVERALL SYSTEM
AT-35
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BACK-UP CONTROL (ENGINE BRAKE)
If the selector lever is shifted to “2” position while driving in D4 (O/D)
or D
3 , great driving force is applied to the clutch inside the transaxle.
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 A/T 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 ControlECS00CTD
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 the ECM (accelerator
pedal position sensor). This results in improved acceleration performance and fuel economy.
SAT004J
SAT005J
SAT006J
SAT007J

AT-46
[EURO-OBD]
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION

*1: These malfunctions cannot be displayed by MI if another malfunction is assigned to lamp MI.
DATA MONITOR MODE (A/T)
X: Standard, —: Not applicable, : Option CONT UNIT(EEP ROM)

TCM memory (EEP ROM) is malfunctioning. —
PNP SW/CIRC

TCM does not receive the correct voltage signal (based on the gear
position) from the switch.P0705
INITIAL START

This is not a malfunction message (Whenever shutting off a power sup-
ply to the TCM, this message appears on the screen).—
No failure
(NO SELF DIAGNOSTIC FAILURE
INDICATED FURTHER TESTING
MAY BE REQUIRED)

No failure has been detected. — Items (CONSULT-II screen terms) Malfunction is detected when... EURO-OBD (DTC)
Monitor item (Unit)SELECT MONITOR ITEM
Remarks
TCM INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION FROM
MENU
VHCL/S SE·A/T (km/h) X — Revolution sensor
VHCL/S SE·MTR (km/h) X —Vehicle speed display may not be accu-
rate under approx. 10 km/h (6 mph). It
may not indicate 0 km/h (0 mph) when
vehicle is stationary.
THRTL POS SEN (V) X —
FLUID TEMP SE (V) X —
BATTERY VOLT (V) X —
ENGINE SPEED (rpm) X X
TURBINE REV (rpm) X —
OVERDRIVE SW (ON/OFF) X —
PN POSI SW (ON/OFF) X —
R POSITION SW (ON/OFF) X —
D POSITION SW (ON/OFF) X —
2 POSITION SW (ON/OFF) X —
1 POSITION SW (ON/OFF) X —
ASCD·CRUISE (ON/OFF) X —
Signal input with CAN communication.
ACC OD CUT (ON/OFF) X —
KICKDOWN SW (ON/OFF) X —
Not mounted but displayed.
POWERSHIFT SW (ON/OFF) X —
CLOSED THL/SW (ON/OFF) X —
Signal input with CAN communication.
W/O THRL/P-SW (ON/OFF) X —
*SHIFT S/V A (ON/OFF) — —
Displays status of check signal (reinput
signal) for TCM control signal output.
Remains unchanged when solenoid
valves are open or shorted. *SHIFT S/V B (ON/OFF) — —
*OVERRUN/C S/V (ON/OFF) — —
HOLD SW (ON/OFF) X — Not mounted but displayed.
BRAKE SW (ON/OFF) X — Stop lamp switch

TROUBLE DIAGNOSIS — INTRODUCTION
AT-59
[EURO-OBD]
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Diagnostic Worksheet
1.❏ Read the Fail-safe and listen to customer complaints.AT- 5 8
2.❏ Check A/T fluidAT- 6 4
❏ Leakage (Follow specified procedure)
❏ Fluid condition
❏ Fluid level
3.❏ Perform Stall Test and Line Pressure Test.AT- 6 5
, AT- 6 8
❏ Stall test — Mark possible damaged components/others.
❏ Torque converter one-way clutch
❏ Reverse clutch
❏ Forward clutch
❏ Overrun clutch
❏ Forward one-way clutch❏ Low & reverse brake
❏ Low one-way clutch
❏ Engine
❏ Line pressure is low
❏ Clutches and brakes except high clutch and
brake band are OK
❏ Line Pressure test — Suspected parts:
4.❏ Perform all Road Test and mark required procedures.AT- 7 0
4-1. Check before engine is started.AT- 7 1
❏ O/D OFF Indicator Lamp Does Not Come On, AT-204 .
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE. — Mark detected items.
❏ PNP switch, AT- 1 0 0
.
❏ A/T fluid temperature sensor, AT- 1 0 6
.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 11 2
.
❏ Engine speed signal, AT- 11 9
.
❏ Torque converter clutch solenoid valve, AT-148
.
❏ Line pressure solenoid valve, AT-154
.
❏ Shift solenoid valve A, AT- 1 6 1
.
❏ Shift solenoid valve B, AT- 1 6 7
.
❏ Accelerator pedal position (App) sensor, AT- 1 7 3
.
❏ Overrun clutch solenoid valve, AT- 1 7 8
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 2 3 7
.
❏ Batt/fluid temp sen (A/T fluid temperature sensor and TCM power source), AT- 1 8 4
.
❏ Vehicle speed sensor·MTR, AT-192
.
❏ CAN communication line, AT- 9 7
.
❏ Control unit (RAM), control unit (ROM), AT-198
.
❏ Control unit (EEP ROM), AT-200
.
❏ Battery
❏ Others
4-2. Check at idleAT- 7 2
❏ Engine Cannot Be Started In “P” And “N” Position, AT-206 .
❏ In “P” Position, Vehicle Moves Forward Or Backward When Pushed, AT-207
.
❏ In “N” Position, Vehicle Moves, AT- 2 0 8
.
❏ Large Shock. “N” → “R” Position, AT-209
.
❏ Vehicle Does Not Creep Backward In “R” Position, AT-210
.
❏ Vehicle Does Not Creep Forward In “D”, “2” Or “1” Position, AT- 2 1 2
.

AT-60
[EURO-OBD]
TROUBLE DIAGNOSIS — INTRODUCTION

4. 4-3. Cruise testAT- 7 4
AT- 7 8Part-1
❏ Vehicle Cannot Be Started From D
1 , AT-214 .
❏ A/T Does Not Shift: D
1 → D2 Or Does Not Kickdown: D4 → D2 , AT- 2 1 7 .
❏ A/T Does Not Shift: D
2 → D3 , AT-220 .
❏ A/T Does Not Shift: D
3 → D4 , AT-222 .
❏ A/T Does Not Perform Lock-up, AT- 2 2 4
.
❏ A/T Does Not Hold Lock-up Condition, AT- 2 2 5
.
❏ Lock-up Is Not Released, AT- 2 2 7
.
❏ Engine Speed Does Not Return To Idle (Light Braking D
4 → D3 ), AT- 2 2 8 .
Part-2AT- 8 1
❏ Vehicle Does Not Start From D1 , AT-230 .
❏ A/T Does Not Shift: D
1 → D2 Or Does Not Kickdown: D4 → D2 , AT- 2 1 7 .
❏ A/T Does Not Shift: D
2 → D3 , AT-220 .
❏ A/T Does Not Shift: D
3 → D4 , AT-222 .
Part-3AT- 8 2
❏ A/T Does Not Shift: D4 → D3 When Overdrive Control Switch “ON” → “OFF”, AT- 2 3 1 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In D
3 ), AT-228 .
❏ A/T Does Not Shift: D
3 → 22 , When Selector Lever “D” → “2” Position, AT-232 .
❏ Engine Speed Does Not Return To Idle (Engine Brake In 2
2 ), AT- 2 2 8 .
❏ A/T Does Not Shift: 2
2 → 11 , When Selector Lever “2” → “1” Position, AT- 2 3 3 .
❏ Vehicle Does Not Decelerate By Engine Brake, AT-235
.
❏ TCM Self-diagnosis Does Not Activate (PNP & Overdrive control switches, and throttle position sensor
circuit checks), AT-237
.
❏ SELF-DIAGNOSTIC PROCEDURE/DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PRO-
CEDURE — Mark detected items.
❏ PNP switch, AT-100
.
❏ A/T fluid temperature sensor, AT-106
.
❏ Vehicle speed sensor·A/T (Revolution sensor), AT- 11 2
.
❏ Engine speed signal, AT- 11 9
.
❏ Torque converter clutch solenoid valve, AT- 1 4 8
.
❏ Line pressure solenoid valve, AT-154
.
❏ Shift solenoid valve A, AT-161
.
❏ Shift solenoid valve B, AT-167
.
❏ Accelerator pedal position (App) sensor, AT-173
.
❏ Overrun clutch solenoid valve, AT-178
.
❏ PNP & overdrive control switches, and throttle position sensor, AT- 2 3 7
.
❏ A/T fluid temperature sensor and TCM power source, AT-184
.
❏ Vehicle speed sensor·MTR, AT- 1 9 2
.
❏ CAN communication line, AT- 9 7
.
❏ Control unit (RAM), control unit (ROM), AT- 1 9 8
.
❏ Control unit (EEP ROM), AT- 2 0 0
.
❏ Battery
❏ Others
5.❏ For self-diagnosis NG items, inspect each component. Repair or replace the damaged parts.AT- 5 2
6.❏ Perform all Road Test and re-mark required procedures.AT- 7 0
7.❏ Perform DTC Confirmation Procedure for following MI indicating items and check out NG items.EC-53
❏ DTC (P0731) A/T 1st gear function, AT-125 .
❏ DTC (P0732) A/T 2nd gear function, AT- 1 3 0
.
❏ DTC (P0733) A/T 3rd gear function, AT-135
.
❏ DTC (P0734) A/T 4th gear function, AT-140
.
8.❏ Perform the Diagnostic Procedures for all remaining items marked NG. Repair or replace the damaged parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also shows some other possible
symptoms and the component inspection orders.)AT- 8 5
9.❏ Erase DTC from TCM and ECM memories.AT- 4 2