2005 NISSAN X-TRAIL steering

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-1691
[YD (WITHOUT EURO-OBD)]
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EC

Component DescriptionEBS01FEC
ASCD STEERING SWITCH
Refer to EC-1557 .
ASCD BRAKE SWITCH
Refer to EC-1544 and EC-1664 .
ASCD CLUTCH SWITCH
Refer to EC-1544 .
STOP LAMP SWITCH
Refer to EC-1544 and EC-1664 .
ASCD INDICATOR
Refer to EC-1692 .

EC-1692
[YD (WITHOUT EURO-OBD)]
ASCD INDICATOR

ASCD INDICATORPFP:24814
Component DescriptionEBS01FED
ASCD indicator lamp illuminates to indicate ASCD operation status. The Lamp has two indicators, CRUISE
and SET, and is integrated in combination meter.
CRUISE indicator illuminates when MAIN switch on ASCD steering switch is turned ON to indicated that
ASCD system is ready for operation.
SET indicator illuminates when the following conditions are met.

CRUISE indicator is illuminated.

SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of
ASCD setting.
SET indicator remains lit during ASCD control.
Refer to EC-1690, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function.

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 Engine Control Signal ............................................. 44
DIAGNOSTIC PROCEDURE .............................. 44
CAN Communication Line ...................................... 45
DIAGNOSTIC PROCEDURE .............................. 45
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 46
4WD Indicator Lamp and LOCK Indicator Lamp Do
Not Turn ON for Approx. 1 Second When The Igni-
tion Switch Is Turned to ON .................................... 46
DIAGNOSTIC PROCEDURE .............................. 46
4WD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned to ON .............................. 47
DIAGNOSTIC PROCEDURE .............................. 47
4WD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started ................................. 48
DIAGNOSTIC PROCEDURE .............................. 48
4WD Mode Cannot Be Switched after Engine Is
Started .................................................................... 49
DIAGNOSTIC PROCEDURE .............................. 49
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 .............................................. 50
DIAGNOSTIC PROCEDURE .............................. 50
Vehicle Does Not Enter 4WD Mode Even Though
4WD Warning Lamp Turned to OFF ....................... 51
DIAGNOSTIC PROCEDURE .............................. 52
While Driving, 4WD Warning Lamp Flashes Rapidly
(When Flashing in Approx. 1 Minute and Then Turn-
ing OFF) ................................................................. 52
While Driving, 4WD Warning Lamp Flashes Slowly
(When Continuing to Flash until Turning Ignition
Switch OFF) ............................................................ 53
DIAGNOSTIC PROCEDURE .............................. 534WD CONTROL UNIT ............................................... 54
Removal and Installation ......................................... 54
REMOVAL ............................................................ 54
INSTALLATION .................................................... 54
SIDE OIL SEAL ......................................................... 55
Removal and Installation ......................................... 55
REMOVAL ............................................................ 55
INSTALLATION .................................................... 55
AIR BREATHER HOSE ............................................. 56
Components ............................................................ 56
Removal and Installation ......................................... 56
TRANSFER ASSEMBLY ........................................... 57
Removal and Installation ......................................... 57
COMPONENTS ................................................... 57
REMOVAL ............................................................ 57
INSTALLATION .................................................... 58
Disassembly and Assembly .................................... 59
COMPONENTS ................................................... 59
ASSEMBLY INSPECTION ................................... 60
DISASSEMBLY .................................................... 64
INSPECTION AFTER DISASSEMBLY ................ 68
SELECTING ADJUSTING SHIMS ....................... 69
ASSEMBLY .......................................................... 70
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 76
General Specifications ............................................ 76
Inspection and Adjustment ...................................... 76
PRELOAD TORQUE BEFORE DISASSEMBLY ... 76
PRELOAD TORQUE AFTER DISASSEMBLY
AND REASSEMBLY ............................................ 76
BACKLASH .......................................................... 76
COMPANION FLANGE RUNOUT ....................... 76
SELECTIVE PARTS ............................................ 76

ALL MODE 4X4 SYSTEM
TF-17
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TF

TYPE 4/TYPE 5
System diagram
Input/output signal chart
T: Transmit R: Receive ASCD SET lamp signal TR
ASCD CRUISE lamp signal TR Signals ECM TCMABS actuator
and electric unit
(control unit)4WD control
unitCombination
meter
PKIA9634E
Signals ECMESP/TCS/ABS
control unitSteering angle
sensor4WD control
unitCombination
meter
4WD mode indicator lamp signalTR
4WD warning lamp signalTR
A/C compressor feedback signal*
2TR
A/C switch signal*
1RT
ABS warning lamp signal T R
Accelerator pedal position signal T R R
Brake warning lamp signal T R
Engine coolant temperature signal TR
Engine speed signal T R R R
ESP OFF indicator lamp signal T R
Glow indicator lamp signal*1 TR
MI signal TR
Stop lamp switch signal T R
Vehicle speed signalTRR
RT
SLIP indicator lamp signal T R
Parking brake switch signalRT
Steering angle sensor signal R T
ASCD SET lamp signal TR
ASCD CRUISE lamp signal TR

TF-18
ALL MODE 4X4 SYSTEM

*1: YD engine models only
*2: QR engine models only
TYPE 6
System diagram
Input/output signal chart
T: Transmit R: Receive
PKIA9635E
Signals ECM TCMESP/TCS/
ABS control
unitSteering
angle sensor4WD control
unitCombination
meter
4WD mode indicator lamp signalTR
4WD warning lamp signalTR
A/C compressor feedback signal TR
A/T position indicator lamp signal T R R
A/T self-diagnosis signal R T
ABS warning lamp signal T R
Accelerator pedal position signal T R R
Brake warning lamp signal T R
Closed throttle position signal T R
Engine and A/T integratedTR
RT
Engine coolant temperature signal TR
Engine speed signal T R R R
ESP OFF indicator lamp signal T R
MI signal TR
O/D OFF indicator signal T R
Output shaft revolution signal R T
Overdrive control switch signal R T
P·N range signal R T
SLIP indicator lamp signal T R
Steering angle sensor signal R T

ALL MODE 4X4 SYSTEM
TF-19
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TF

Stop lamp switch signalRT
TR
Vehicle speed signalTRR
RT
Parking brake switch signalRT
Wide open throttle position signal T R
ASCD SET lamp signal TR
ASCD CRUISE lamp signal TR Signals ECM TCMESP/TCS/
ABS control
unitSteering
angle sensor4WD control
unitCombination
meter

TROUBLE DIAGNOSIS
TF-29
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Trouble Diagnosis Chart for SymptomsEDS001VJ
If 4WD warning lamp turns ON, perform self-diagnosis. Refer to TF-32, "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-46
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-47
Unified meter control unit
4WD warning lamp does not turn OFF sev-
eral seconds after engine started.Engine runningCAN communication line
TF-48
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-49
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-50
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-51
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-52
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-53