2003 NISSAN X-TRAIL steering

PSP SWITCH
EC-1485
[YD (WITHOUT EURO-OBD)]
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Diagnostic ProcedureEBS0126E
1. CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Check “PW/ST SIGNAL” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK POWER STEERING PRESSURE SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect power steering pressure switch harness connector.
3. Check harness continuity between power steering pressure
switch terminal 2 and ground. Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to power in harness or con-
nectors.
3. CHECK POWER STEERING PRESSURE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 111 and power steering pressure switch terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M63, F30

Harness for open and short between power steering pressure switch and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
Conditions PW/ST SIGNAL
Steering wheel is in neutral position OFF
Steering wheel is turned ON
PBIB0434E
Continuity should exist.
PBIB1904E
Continuity should exist.

EC-1486
[YD (WITHOUT EURO-OBD)]
PSP SWITCH

5. CHECK POWER STEERING PRESSURE SWITCH
Refer to EC-1486, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace power steering pressure switch.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS0126F
POWER STEERING PRESSURE SWITCH
1. Disconnect power steering pressure switch harness connector and then start engine.
2. Check continuity between power steering pressure switch termi-
nal 1 and 2 under the following conditions.
Removal and InstallationEBS0128A
Refer to PS-34, "HYDRAULIC LINE" .
Conditions Continuity
Steering wheel is being fully turned. Yes
Steering wheel is not being turned. No
MBIB0624E

KEY INTERLOCK CABLE
AT-403
[ALL]
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AT

2. Remove lock plate from steering lock assembly and remove key
interlock cable.
InstallationECS0040B
1. Turn ignition key to lock position.
2. Set A/T selector lever to P position.
3. Set key interlock cable to steering lock assembly and install lock
plate.
4. Clamp cable to steering column and fix to control cable with
band.
5. Insert interlock rod into adjuster holder.
6. Install casing cap to bracket.
7. Move slider in order to fix adjuster holder to interlock rod.
SAT854J
SAT854J
SAT804E
SAT805E

TF-2 DIAGNOSTIC PROCEDURE .............................. 40
COMPONENT INSPECTION .............................. 42
Engine Control Signal ............................................. 42
DIAGNOSTIC PROCEDURE .............................. 42
CAN Communication Line ...................................... 43
DIAGNOSTIC PROCEDURE .............................. 43
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 44
4WD Indicator Lamp and LOCK Indicator Lamp Do
Not Turn ON for Approx. 1 Second When The Igni-
tion Switch Is Turned to ON .................................... 44
DIAGNOSTIC PROCEDURE .............................. 44
4WD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned to ON .............................. 45
DIAGNOSTIC PROCEDURE .............................. 45
4WD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started ................................. 46
DIAGNOSTIC PROCEDURE .............................. 46
4WD Mode Cannot Be Switched after Engine Is
Started .................................................................... 47
DIAGNOSTIC PROCEDURE .............................. 47
Heavy Tight-corner Braking Symptom Occurs
When The Vehicle Is Driven in AUTO Mode and The
Steering Wheel Is Turned Fully to Either Side after
The Engine Is Started ............................................. 48
DIAGNOSTIC PROCEDURE .............................. 48
Vehicle Does Not Enter 4WD Mode Even Though
4WD Warning Lamp Turned to OFF ....................... 49
DIAGNOSTIC PROCEDURE .............................. 50
While Driving, 4WD Warning Lamp Flashes Rapidly
(When Flashing in Approx. 1 Minute and Then Turn-
ing OFF) ................................................................. 50
While Driving, 4WD Warning Lamp Flashes Slowly
(When Continuing to Flash until Turning Ignition Switch OFF) ............................................................ 51
DIAGNOSTIC PROCEDURE ............................... 51
4WD CONTROL UNIT ............................................... 52
Removal and Installation ......................................... 52
REMOVAL ............................................................ 52
INSTALLATION .................................................... 52
SIDE OIL SEAL ......................................................... 53
Removal and Installation ......................................... 53
REMOVAL ............................................................ 53
INSTALLATION .................................................... 53
AIR BREATHER HOSE ............................................. 54
Components ............................................................ 54
Removal and Installation ......................................... 54
TRANSFER ASSEMBLY ........................................... 55
Removal and Installation ......................................... 55
COMPONENTS ................................................... 55
REMOVAL ............................................................ 55
INSTALLATION .................................................... 56
Disassembly and Assembly .................................... 57
COMPONENTS ................................................... 57
ASSEMBLY INSPECTION ................................... 58
DISASSEMBLY .................................................... 62
INSPECTION AFTER DISASSEMBLY ................ 66
SELECTING ADJUSTING SHIMS ....................... 67
ASSEMBLY .......................................................... 68
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 74
General Specifications ............................................ 74
Inspection and Adjustment ...................................... 74
PRELOAD TORQUE BEFORE DISASSEMBLY ... 74
PRELOAD TORQUE AFTER DISASSEMBLY
AND REASSEMBLY ............................................ 74
BACKLASH .......................................................... 74
COMPANION FLANGE RUNOUT ....................... 74
SELECTIVE PARTS ............................................ 74

ALL MODE 4X4 SYSTEM
TF-15
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TF

CAN COMMUNICATION UNIT (M/T MODELS WITH ESP)
System diagram
Input/output signal chart
T: Transmit R: Receive Engine speed signal T R R
Engine coolant temperature signal TR
Accelerator pedal position signal T R
Output shaft revolution signal R T
A/C compressor feedback signal TR
Vehicle speed signalTRR
RT
ABS warning lamp signal T R
4WD warning lamp signalTR
4WD mode indicator lamp signalTR
Parking brake switch signalRT
MI signal TR
Engine A/T integrated control signalTR
RT
A/T self-diagnosis signal R TSignals ECM TCMABS actuator
and electric unit
(control unit)4WD control
unitCombination
meter
PKIA6459E
Signals ECMESP/TCS/ABS
control unitSteering angle
sensor4WD control
unitCombination
meter
Stop lamp switch signal T R
Engine speed signal T R R R
Engine coolant temperature signal TR
Accelerator pedal position signal T R R
A/C switch signal*
1RT
A/C compressor feedback signal*
2TR

TF-16
ALL MODE 4X4 SYSTEM

*1: YD engine models only
*2: QR engine models only
CAN COMMUNICATION UNIT (A/T MODELS WITH ESP)
System diagram
Input/output signal chart
T: Transmit R: Receive Vehicle speed signalTRR
RT
ABS warning lamp signal T R
Brake warning lamp signal T R
SLIP indicator lamp signal T R
ESP OFF indicator lamp signal T R
4WD warning lamp signalTR
4WD mode indicator lamp signalTR
Parking brake switch signalRT
MI signal TR
Glow indicator lamp signal*
1TR
Steering angle sensor signal R TSignals ECMESP/TCS/ABS
control unitSteering angle
sensor4WD control
unitCombination
meter
PKIA6460E
Signals ECM TCMESP/TCS/
ABS control
unitSteering
angle sensor4WD control
unitCombination
meter
Stop lamp switch signalRT
TR
P·N range signal R T
A/T position indicator lamp signal T R R
O/D OFF indicator signal T R
Overdrive control switch signal R T
Closed throttle position signal T R
Wide open throttle position signal T R

ALL MODE 4X4 SYSTEM
TF-17
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Engine speed signal T R R R
Engine coolant temperature signal TR
Accelerator pedal position signal T R R
Output shaft revolution signal R T
A/C compressor feedback signal TR
Vehicle speed signalTRR
RT
ABS warning lamp signal T R
Brake warning lamp signal T R
SLIP indicator lamp signal T R
ESP OFF indicator lamp signal T R
4WD warning lamp signalTR
4WD mode indicator lamp signalTR
Parking brake switch signalRT
MI signal TR
Steering angle sensor signal R T
Engine and A/T integratedTR
RT
A/T self-diagnosis signal R TSignals ECM TCMESP/TCS/
ABS control
unitSteering
angle sensor4WD control
unitCombination
meter

TROUBLE DIAGNOSIS
TF-27
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Trouble Diagnosis Chart for SymptomsEDS001VJ
If 4WD warning lamp turns ON, perform self-diagnosis. Refer to TF-30, "SELF-DIAG RESULT MODE" .
NOTE:

Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode. This is not malfunction.

Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: LOCK mode, steering
wheel is turned fully to either sides, and accelerator pedal was depressed.Symptom Condition Check item Reference page
4WD indicator lamp and LOCK indicator
lamp do not turn ON for approx. 1 second
when the ignition switch is turned to ON.
(4WD indicator lamp and LOCK indicator
lamp check)Ignition switch: ONCAN communication line
TF-44
Power supply and ground for 4WD con-
trol unit
Unified meter control unit
4WD warning lamp does not turn ON when
the ignition switch is turned to ON.
(4WD warning lamp check)Ignition switch: ONCAN communication line
TF-45
Unified meter control unit
4WD warning lamp does not turn OFF sev-
eral seconds after engine started.Engine runningCAN communication line
TF-46
Power supply and ground for 4WD con-
trol unit
Unified meter control unit
4WD solenoid
4WD actuator relay (integrated in 4WD
control unit)
Wheel sensor
4WD mode cannot be switched after engine
is started.Engine running4WD mode switch
TF-47
CAN communication line
Unified meter control unit
Heavy tight-corner braking symptom occurs
when the vehicle is driven in AUTO mode
and the steering wheel is turned fully to
either side after the engine is started. (See
NOTE.)

While driving

AUTO mode

Steering wheel is
turned fully to either
sidesCAN communication line
TF-48
4WD mode switch
Accelerator pedal position signal
4WD solenoid
Mechanical malfunction of electric con-
trolled coupling (clutch sticking etc.)
Vehicle does not enter 4WD mode even
though 4WD warning lamp turned to OFF.Vehicle speed: 10 km/h
(6 MPH) or less4WD solenoid
TF-49
Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)
Vehicle speed: 10 km/h
(6 MPH) or moreOperating condition of parking brake
4WD solenoid
Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)
While driving, 4WD warning lamp flashes
rapidly. (When flashing in approx. 1 minute
and then turning OFF.)
Rapid flashing: 2 times/second

While driving

AUTO mode and
LOCK modeProtection function is activated due to
heavy load to electric controlled cou-
pling. (4WD system is not malfunction-
ing.)TF-50
While driving, 4WD warning lamp flashes
slowly. (When continuing to flash until turn-
ing ignition switch OFF)
Slow flashing: 1 time/2 seconds
While driving

Vehicle speed: 20 km/h
(12 MPH) or moreTire size is different between front and
rear of vehicle.TF-51