2003 NISSAN X-TRAIL Service Repair Manual

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Page 2601 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS
TF-25
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TDWA0024E

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NISSAN X-TRAIL 2003 Service Repair Manual TF-26
TROUBLE DIAGNOSIS

TDWA0025E

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NISSAN X-TRAIL 2003 Service Repair Manual 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:

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

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NISSAN X-TRAIL 2003 Service Repair Manual TF-28
TROUBLE DIAGNOSIS

4WD Control Unit Input/Output Signal Reference ValuesEDS001VK
4WD CONTROL UNIT INSPECTION TABLE
Specifications with CONSULT-II
Monitored item [Unit] Content Condition Display

TF-28
TROUBLE DIAGNOSIS

4WD Control Unit Input/Output Signal Reference ValuesEDS001VK
4WD CONTROL UNIT INSPECTION TABLE
Specifications with CONSULT-II
Monitored item [Unit] Content Condition Display value
FR RH SENSOR [km/h] or [mph]Wheel speed (Front wheel
right)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
FR LH SENSOR [km/h] or [mph]Wheel speed (Front wheel
left)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
RR RH SENSOR [km/h] or [mph]Wheel speed (Rear wheel
right)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
RR LH SENSOR [km/h] or [mph]Wheel speed (Rear wheel
left)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
BATTERY VOLT [V]Power supply voltage for
4WD control unitIgnition switch: ON Battery voltage
THRTL POS SEN [%] Throttle opening conditionWhen depressing accelerator pedal
(Value rises gradually in response to
throttle position.)0 - 100%
ETS SOLENOID [A]Monitored value of current at
4WD solenoidEngine speed
: At idle2WD Approx. 0.000A
AUTO Approx. 0.000A
LOCK Approx. 0.000A
Engine speed
: 3,000 rpm or more con-
stant2WD Approx. 0.000A
AUTO Approx. 0.000 - 1.500A*
LOCK Approx. 2.800A
STOP LAMP SW [ON/OFF]Condition of brake pedal
operationBrake pedal: Depressed ON
Brake pedal: Released OFF
ENG SPEED SIG [RUN/STOP] Condition of engine runningEngine stopped
(Engine speed: Less than 400 rpm)STOP
Engine running
(Engine speed: 400 rpm or more)RUN
ETS ACTUATOR [ON/OFF]Operating condition of 4WD
actuator relay (integrated in
4WD control unit)Engine stopped (Ignition
switch: ON)OFF
Engine running ON
4WD WARN LAMP [ON/OFF] 4WD warning lamp condition4WD warning lamp: ON ON
4WD warning lamp: OFF OFF
4WD MODE SW [2WD/AUTO/
LOCK]Input condition from 4WD
mode switch4WD mode switch2WD 2WD
AUTO AUTO
LOCK LOCK

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NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS
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*: The values are changed by throttle opening and engine speed.
CONSULT-II FunctionEDS001VL
FUNCTION
CONSULT-II SETTING PROCEDURE
For details, refe

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NISSAN X-TRAIL 2003 Service Repair Manual TF-30
TROUBLE DIAGNOSIS

5. Touch “ALL MODE AWD/4WD”.
If “ALL MODE AWD/4WD” is not indicated, go to GI-35, "
CON-
SULT-II Data Link Connector (DLC) Circuit" .
6. Perform each diagnostic test

TF-30
TROUBLE DIAGNOSIS

5. Touch “ALL MODE AWD/4WD”.
If “ALL MODE AWD/4WD” is not indicated, go to GI-35, "
CON-
SULT-II Data Link Connector (DLC) Circuit" .
6. Perform each diagnostic test mode according to each service
procedure.
SELF-DIAG RESULT MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to TF-29, "CONSULT-II SETTING PROCEDURE"
.
2. Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.
3. Stop vehicle. With engine at idle, touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.
NOTE:
The details for “TIME” are as follow:
–“0”: Error currently detected with 4WD control unit.
–Except for “0”: Error detected in the past and memorized
with 4WD control unit.
Detects frequency of driving after DTC occurs (frequency
of turning ignition switch “ON/OFF”).
Display Item List
CAUTION:
If “CAN COMM CIRCUIT [U1000]” is displayed with other DTCs, first perform the trouble diagnosis for CAN communica-
tion line.
Make sure that ABS warning lamp turns OFF by driving for a minute at vehicle speed of 30 km/h (19 MPH) or more after
turning ignition switch "OFF" if 4WD warning lamp turns ON with system malfunction of “ABS SYSTEM [C1203]”. 4WD
warning lamp may not turn OFF if it is normal unless ignition switch turns OFF at once and engine restarts after that.
SDIA2216E
SDIA2217E
Items (CONSULT-II screen
terms)Diagnostic item is detected when... Check item
CONTROLLER FAILURE
[C1201]Malfunction has occurred inside4WD control unit.TF-34, "
4WD Control Unit"
ABS SYSTEM
[C1203]Malfunction related to wheel sensor has been detected by ABS actu-
ator and electric unit (control unit) (without ESP) or ESP/TCS/ABS
control unit (with ESP).TF-34, "ABS System"
4WD SOLENOID
[C1204]Malfunction related to 4WD solenoid has been detected.TF-36, "4WD Solenoid"
4WD ACTUATOR RLY
[C1205]Malfunction has been detected from 4WD actuator relay integrated
with 4WD control unit, or malfunction related to 4WD solenoid has
been detected.TF-38, "4WD Actuator
Relay" or TF-36, "4WD
Solenoid"
MODE SW
[C1209]More than two switch inputs are simultaneously detected due to
short circuit of 4WD mode switch.TF-40, "4WD Mode Switch"
ENGINE SIGNAL 1
[C1210]Malfunction has been detected from ECM.TF-42, "Engine Control Sig-
nal"
CAN COMM CIRCUIT
[U1000]Malfunction has been detected from CAN communication line.LAN-4, "CAN Communica-
tion Unit"
NO DTC IS DETECTED.
FURTHER TESTING MAY BE
REQUIRED.No NG item has been detected. —

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NISSAN X-TRAIL 2003 Service Repair Manual TROUBLE DIAGNOSIS
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How to Erase Self-diagnostic Results
1. Perform applicably inspection of malfunctioning item and then repair or replace.
2. Start engine and drive a

TROUBLE DIAGNOSIS
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How to Erase Self-diagnostic Results
1. Perform applicably inspection of malfunctioning item and then repair or replace.
2. Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.
3. Make sure that ABS warning lamp turns OFF.
NOTE:
Make sure that ABS warning lamp turns OFF by driving for a minute at vehicle speed of 30 km/h
(19 MPH) or more after turning ignition switch "OFF" if 4WD warning lamp turns ON with system
malfunction of “ABS SYSTEM [C1203]”. 4WD warning lamp may not turn OFF if it is normal unless
ignition switch turns OFF at once and engine restarts after that.
4. Turn ignition switch “OFF” to erase memory.
5. Start engine and select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-II.
6. Touch “ERASE” on CONSULT-II screen to erase DTC memory.
CAUTION:
If memory cannot be erased, perform applicably diagnosis.
7. Drive at 30 km/h (19 MPH) or more for approx. 1 minute. Be sure 4WD warning lamp is OFF.
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer to TF-29, "CONSULT-II SETTING PROCEDURE"
.
2. Touch “DATA MONITOR”.
3. Select from “SELECT MONITOR ITEM”, screen of data monitor mode is displayed.
NOTE:
When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.
Display Item List
×: Standard –: Not applicable
Monitored item (Unit)Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
FR RH SENSOR [km/h] or [mph]×××Wheel speed calculated by front wheel
sensor RH signal is displayed.
FR LH SENSOR [km/h] or [mph]×××Wheel speed calculated by front wheel
sensor LH signal is displayed.
RR RH SENSOR [km/h] or [mph]×××Wheel speed calculated by rear wheel
sensor RH signal is displayed.
RR LH SENSOR [km/h] or [mph]×××Wheel speed calculated by rear wheel
sensor LH signal is displayed.
BATTERY VOLT [V] – –×Power supply voltage for 4WD control unit.
THRTL POS SEN [%] – –×Throttle opening status is displayed.
ETS SOLENOID [A] – –×Monitored value of current at 4WD sole-
noid.
STOP LAMP SW [ON/OFF] – –×Stop lamp switch signal status via CAN
communication line is displayed.
ENG SPEED SIG [RUN/STOP] – –×Engine status is displayed.
ETS ACTUATOR [ON/OFF] – –×Operating condition of 4WD actuator relay
(integrated in 4WD control unit) is dis-
played.
4WD WARN LAMP [ON/OFF] – –×Control status of 4WD warning lamp is dis-
played.
4WD MODE SW [2WD/AUTO/LOCK] – –×4WD lock switch signal status via CAN
communication line is displayed.

Page 2608 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual TF-32
TROUBLE DIAGNOSIS

ACTIVE TEST MODE
Description
Use this mode to determine and identify the details of a malfunction based on self-diagnostic results or data
monitor. 4WD control unit gives dri

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