NISSAN X-TRAIL 2001 Service Repair Manual

TROUBLE DIAGNOSIS
TF-41
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Trouble diagnosis chart by symptomEDS000IT
Symptom Condition Check items Reference page
When ignition switch is turned ON,
4WD mode indicator lamp does not
illuminate for approx. 1 second (4WD
mode lamp check)IGN-ON
●Blown 4WD mode indicator lamp bulb
●Blown fuse between ignition and 4WD mode
indicator lamp
●Open circuit in wiring between ignition and
4WD mode indicator lampTF-55, "
4WD
INDICATOR
LAMP DOSE
NOT COME ON
FOR APPROXI-
MATELY 1
SECOND
WHEN THE
IGNITION
SWITCH IS
TURNED TO
ON"
4WD warning lamp does not illuminate
with ignition switch ON.IGN-ON
●Malfunction 4WD warning lamp circuit.
●Blown fuse between ignition and 4WD warn-
ing lamp
●Open circuit in wiring between ignition and
4WD warning lamp
●Open circuit in wiring between 4WD warning
lamp and 4WD actuator relay
●Disconnected 4WD actuator relay
●Open circuit in wiring between 4WD actuator
relay and body groundTF-55, "
4WD
WARNING
LAMP DOES
NOT ILLUMI-
NATE WITH
IGNITION ON"
4WD warning lamp does not go out
several seconds after engine is started.
(4WD mode indicator lamp goes out.)Engine running●4WD control unit connector disconnected
●Malfunction presented in 4WD systemTF-56, "
4WD
WARNING
LAMP DOES
NOT GO OUT
SEVERAL SEC-
ONDS AFTER
ENGINE
STARTED.(4W
D MODE INDI-
CATOR LAMP
GOES OUT)"
Heavy tight-corner braking symptom
occurs when vehicle is driven in the fol-
lowing conditions: AUTO mode and
steering wheel is turned fully to either
sides after engine is started (Note 1,
Note 2).●Engine running
●AUTO mode
●Steering wheel
fully turned
●Operation is not in AUTO mode (in 2WD or
LOCK mode).
●Throttle position signal error
●Mechanical malfunction of electronically con-
trolled coupling
●Malfunction present in 4WD systemTF-56, "
HEAVY
TIGHT-COR-
NER 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"
4WD mode cannot be switched after
engine is started (Note 3)Engine running
●4WD mode change-over switch is discon-
nected.
●Open circuit between 4WD mode change-
over switch and 4WD control unit
●Open circuit between 4WD mode change-
over switch and body groundTF-57, "
4WD
MODES CAN-
NOT BE
SWITCHED
AFTER
ENGINE IS
STARTED"

TF-42
TROUBLE DIAGNOSIS
NOTE:
1. Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode. This is not
malfunction.
2. 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.
3. When the difference of revolution speed between the front and the rear wheels is large, the 4WD mode
does not change to other mode.this is not a malfunction.
4WD control unit input/output signal standardEDS000H9
4WD CONTROL UNIT CONNECTOR TERMINAL ARRANGEMENT
When ignition switch is turned to ON with connectors of 4WD control unit connected.
While driving, 4WD warning lamp
flashes rapidly. (when it flashes for
approx. one minute, then does not illu-
minate.) Rapid flashing: Two times
flashing per 1 secondEngine running
(to other than 2WD
mode)Protection function was activated due to heavy
load to electronically controlled coupling. (4WD
system is not malfunctioning.)TF-57, "
WHILE
DRIVING, 4WD
WARNING
LAMP
FLASHES RAP-
IDLY. (WHEN IT
FLASHERS
FOR APPROX.
ONE MINUTE,
THEN DOES
NOT ILLUMI-
NATE.)"
While driving, 4WD warning lamp
flashes slowly. (when it flashes for
approx. one minute, then does not illu-
minate.)Slow flashing: One flashing
per 2 seconds●Engine running
●Driving at vehicle
speed 20km/
h(12MPH)Tire size is different for front and rear of vehicle.TF-57, "
WHILE
DRIVING, 4WD
WARNING
LAMP
FLASHES
SLOWLY.
(WHEN IT
CONTINUES
TO ILLUMI-
NATE UNTIL
ENGINE
TURNS OFF.)"
Vehicle does not enter 4WD mode
even though 4WD warning lamp is off.Engine runningMechanical malfunction of electronically con-
trolled coupling (Mechanical engagement of
clutch is not possible.)TF-58, "
VEHI-
CLE DOES
NOT ENTER
4WD MODE
EVEN
THOUGH 4WD
WARNING
LAMP IS OFF."
Symptom Condition Check items Reference page
SDIA0120E

TROUBLE DIAGNOSIS
TF-43
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REFERENCE STANDARD TABLE
Specifications defined by circuit tester
NOTE:
*1:If a circuit tester for measuring voltage is used for the check, do not forcibly extend any connector terminals.
*2:4WD warning lamp ON/OFF timing
*3:Unit name is indicated by the one used in circuit diagram (4WD solenoid valve). However, it is "E-TS SOLE
NOID" in CONSULT-II data.
Terminal No.
Location
Standard *1(Note) Check points when
result was malfunctioning
+-
3 Power supply Ignition switch ON Battery voltage (approx. 12V)Control unit power supply
circuit
11 5
Body
grou
ndGround - Control unit ground circuit 11 3
111
108
106
104
74WD warning lamp
*24WD warning lamp ON
4WD warning lamp OFFApprox. 0V
Battery voltage (approx. 12V)4WD warning lamp and
harness
16AUTO indicator
lampAUTO indicator lamp ON
AUTO indicator lamp OFFApprox. 0V
Battery voltage (approx. 12V)AUTO indicator lamp and
harness
6LOCK indicator
lampLOCK indicator lamp ON
LOCK indicator lamp OFFApprox. 0V
Battery voltage (approx. 12V)LOCK indicator lamp and
harness
1024WD solenoid valve
(E-TS solenoid
valve)
*3At vehicle stop engine idling Battery voltage (approx. 12V)4WD actuator relay sole-
noid valve and harness
18 4WD actuator relay At vehicle stop engine idling 2 V or lower4WD actuator relay and
harness
2 G-sensor power
supply1
At ignition switch ON (vehicle hori-
zontal stop condition)Approx. 8 V
G-sensor and harness
32 Longitudinal G-sen-
sor 1Approx. 2.5V
22Throttle position
sensorWide open throttle
Closed throttleApprox. 4.0 V
Approx. 0.5 VThrottle position sensor
and harness
24Parking brake
switchIn parking position
In other than parking position-Parking brake switch and
harness
264WD mode change-
over switch LOCK4WD mode change-over switch:
LOCK
4WD mode change-over switch:
Other than LOCKSW ON: Approx. 0 V
SW OFF: Approx. 5 V4WD mode change-over
switch and circuit
274WD mode change-
over switch AUTO4WD mode change-over switch:
2WD
4WD mode change-over switch:
other than 2WDSW ON: Approx. 0 V
SW OFF: Approx. 5 V4WD mode change-over
switch and circuit
39CAN communica-
tion L line---
48CAN communica-
tion H line---
ON: When ignition switch is turned ON (before engine starts) or when malfunction is
detected
OFF: After engine is started (When the system is in normal condition)

TF-44
TROUBLE DIAGNOSIS
Specifications defined by CONSULT-II
Check air pressure of tire under normal condition.Items to be monitored ContentsData monitor
(Reference)
Check points when result
was malfunctioning ConditionReference values in
normal operation
DECEL G-SENSOR (G)G-sensor operating
conditionWith vehicle stopped
on flat road.± 0.15 G G-sensor and harness
THRTL POS SEN (V)Throttle valve open/
close conditionClosed throttle to wide
open throttleWhen closed throttle:
Approx. 0.5V
Throttle position sensor
and harness
When wide open throt-
tle: Approx. 4.0 V
ENGINE SPEED SIG
(STOP/RUN)With engine runningEngine speed below
400 rpmSTOP
Engine speed signal circuit
Engine speed 400 rpm
or higherRUN
E-TS ACTUATOR (ON/OFF)4WD actuator relay
(4WD actuator relay)
activation conditionVehicle stop (Ignition
switch ON)OFF4WD actuator relay (4WD
actuator relay) and har-
ness
Engine running ON
G-SEN VOLT (V)G-sensor power sup-
ply conditionWith vehicle stopped
on flat road.Approx. 8V (reference
value)G-sensor and harness
BATTERY VOL (V)Battery voltage sup-
plied to control unitIgnition switch ON Approx. 10 - 16 VControl unit power supply
circuit
4WD WARN LAMP (ON/
OFF)4WD warning lamp
ON condition4WD warning lamp
ONON4WD warning lamp and
harness
Refer to "4WD Warning
Lamp". 4WD warning lamp
OFFOFF
4WD MODE SW
(AUTO LOCK 2WD)Input condition of
4WD mode change-
over switchEngine running, vehi-
cle stopped, switch
pressed–4WD mode change-over
switch and circuit
4WD MODE MONI (AUTO,
LOCK, 2WD)Output condition of
4WD mode indicator
lamp signalEngine running, vehi-
cle stoppedUsing 4WD mode
change-over switch4WD mode indicator lamp
and circuit
DIS-TIRE MONI (mm)Improper size tire
installed condition
–0 - 4 mm, 4 - 8 mm,
8mm -Front/Rear tire size differ-
ence, wear condition
P BRAKE SW (ON/OFF)Parking brake switch
operating conditionParking brake
depressedON
Parking brake switch and
harness
Parking brake not
depressedOFF
SPEED MTR O/P (km/h)Output condition of
vehicle speed for
speedometerWhile vehicle is
stopped 0 km/h (0 MPH)
Speedometer and harness
Ve h i c le r u n n in gAlmost in accordance
with the wheel speed
sensor display
ABS 4WD COMMEPS/TCS/ABS con-
trol unit operating con-
ditionIgnition switch ON OKESP/TCS/ABS control unit
and circuit
CAN COMM (OK-NG)CAN communication
signal conditionIgnition switch ON OKCAN communication sig-
nal (OK-NG) condition is
displayed

TROUBLE DIAGNOSIS
TF-45
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CONSULT-II functionsEDS000HA
CONSULT-II FUNCTION APPLICATION TABLE
SELF-DIAGNOSIS
Operation procedure
1. After turning ignition switch OFF, connect CONSULT-II connec-
tor to data link connector on vehicle.
2. Start engine and drive at approx. 30 km/h(19MPH) for approx. 1
minute.
3. Stop vehicle. With engine at idle, touch "START", "ALL MODE
4WD", and "SELF-DIAG RESULTS" on CONSULT-II screen in
this order.
CAUTION:
"ALL MODE 4WD" may not be displayed on the system
selection screen in the following case: When "START" was
touched just after engine is started or ignition switch is
turned to ON. In this case, repeat procedure from step 1.
4. DTC RESULT is displayed. (If necessary, touch "PRINT" to print self-diagnosis result.)
●If "NO DTC IS DETECTED FURTHER TESTING MAY BE REQUIRED" is displayed. Check 4WD warn-
ing lamp.
5. Check the malfunctioning part indicated by the chart to repair or replace.
6. Start engine and drive at approx. 30km/h(19MPH) for approx. 1minule.
CAUTION:
●Check again to make sure that there is NO FAILURE on other parts.
●If wheel sensor [Short-Circuit] is detected, 4WD warning lamp does not turn off until following
conditions: Vehicle is driven at approx. 30km/h(19MPH) for approx. 1minute, even in normal
conditions.
7. Turn OFF ignition switch to prepare for erasing memory.
8. Start engine. Touch "START," "ALL MODE 4WD," "SELF-DIAG RESULTS," and "ERASE" on CONSULT-II
screen in this order to erase fault memory.
Item Self-diagnosis Data monitor Active test
FR RH SENSOR××-
FR LH SENSOR××-
RR RH SENSOR××-
RR LH SENSOR××-
ENG SPEED SIG××-
BATTERY VOLT××-
G-SEN VOLT -×-
THRTL POS SEN××-
ETS ACTUATOR -×-
4WD WARN LAMP -×-
ETS SOLENOID×××
DECEL G-SEN××-
P BRAKE SW -×-
SPEED MTR O/P -×-
4WD MODE SW×××
4WD MODE MONI -×-
DIS-TIRE MONI -×-
C/U×--
ABS FAIL SIG×××
PBIA0153E

TF-46
TROUBLE DIAGNOSIS
CAUTION:
If memory cannot be erased, proceed to 5.
9. Drive at approx. 30 km/h (19MPH) for approx. 1 minute. Be sure 4WD warning lamp is OFF.
Display item list
CAUTION:
●If "ALL MODE 4WD" is not displayed on system selection screen, check the following: 4WD actua-
tor and control unit, data link connector harness, and No. of CONSULT-II program card
●When several systems including CAN communication system indicates troubles, perform trouble
diagnosis of the CAN communication primarily.
DATA MONITOR
●For details of data monitor function, refer to CONSULT -II Operation Manual.
Operation procedure
1. Turn the ignition switch to OFF.
2. Connect CONSULT-II connector to data link connector on vehicle.
3. Turn ignition switch ON.
4. Touch "START" on the display.
5. Touch "ALL MODE 4WD" on the display.
CAUTION:
"ALL MODE 4WD" may not be displayed on the system selection screen in the following case:
When "START" was touched just after engine is started or ignition switch is turned to ON. In this
case, repeat procedure from step 2.
6. Touch "DATA MONITOR".
7. Return to monitor item selection screen. Touch any of "ECU INPUT SIGNALS," "MAIN SIGNALS," "CAN
DIG SUPPORT MNTR" or "SELECTION FROM MENU".
Refer to the following "Data monitor item chart".
Item Malfunction detecting condition Check harness
DECEL G-SENSOR Longitudinal G-sensor output voltage is outside specification.
G-sensor harness
G-SENSOR VOLTAGEPower voltage of longitudinal G-sensor remains abnormally high
or low for a certain period of time.
ETS SOLENOID
(4WD solenoid valve) (Open)4WD solenoid valve control terminal is not supplied with proper
voltage due to open circuit in 4WD solenoid valve.
4WD actuator relay,
solenoid and harness ETS SOLENOID
(4WD solenoid valve) (Short)4WD solenoid valve control terminal is not supplied with proper
voltage due to short circuit in 4WD solenoid valve.
ETS SOLENOID
(4WD solenoid valve)
(CURRENT FAILURE)Current supplied to 4WD solenoid valve is abnormally high or
low compared with the specification.
CONTROL UNIT Processing function of 4WD control unit is malfunctioning.4WD control unit, power
and ground circuits
DECEL G-SEN MONI Output voltage of longitudinal G-sensor is outside specification. G-sensor harness
DECEL G-SEN IN Input voltage of longitudinal G-sensor is outside specification. G-sensor harness
3 V POWER SUPLY CHECK 4WD control unit internal 3V power supply is malfunctioning.Control unit power sup-
ply circuit
4WD A/R CHECK 4WD actuator relay turned on while it is controlled OFF.
4WD actuator relay,
4WD solenoid and har-
ness. 4WD SOL/V CHECK4WD solenoid not supplied with proper voltage
due to open circuit in 4WD solenoid valve.
CAN COMM
●CAN communication function of 4WD control unit is malfunc-
tioning.
●CAN communication function of EPS control unit is malfunc-
tioning.Control unit power sup-
ply circuit
ABS 4WD COMMWheel speed sensor system of ESP/TCS/ABS control unit is
malfunctioning.ESP/TCS/ABS control
unit and harness

TROUBLE DIAGNOSIS
TF-47
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8. Touch "MONITOR START".
9. Screen of data monitor is displayed.
Display item list
Item (Unit)Monitor item selection
Remarks
ECU INPUT SIG-
NALSMAIN
SIGNALSCAN DIAG SUP-
PORT MNTRSELECTION
FROM MENU
ENG SPEED SIG (STOP/
RUN)××-×Condition of engine
(STOP/RUN) is dis-
played.
BATTERY VOLT (V)×--×Indicates voltage sup-
plied by 4WD control
unit
G-SEN VOLT (V)×--×G-sensor power sup-
ply condition (ON/OFF)
THRTL POS SEN (V)××-×Indicates throttle posi-
tion sensor signal volt-
age
ETS ACTUATOR (ON-OFF) -×-×4WD actuator relay
ON/OFF condition
4WD WARNING LAMP
(ON-OFF)-×-×Indicates 4WD warn-
ing lamp operating con-
dition
ETS SOLENOID (A) -×-×Current supplied to
4WD solenoid valve
DECEL G-SEN (G)××-×G-sensor operating
condition
4WD MODE SW
(AUTO, LOCK, 2WD)-×-×4WD mode recognized
by control unit
4WD MODE MONI
(AUTO, LOCK, 2WD)-×-×Output condition of
4WD mode indicator
lamp signal
DIS-TIRE MONITOR (mm) -×-×Improper size tire
installed condition
P BRAKE SW (ON/OFF) -×-×Indicates parking brake
switch ON/OFF condi-
tion
SPEED MTR (O/P) (km/h) -×-×Indicates vehicle speed
recognized by meter
control unit
CAN EFFECT (OK-NG) -×-×CAN communication
signal (OK/NG) condi-
tion is displayed.
TCS FAIL SIG (ON-OFF) - - -×TCS fail signal condi-
tion is displayed (ON-
OFF)
EBD FAIL SIG (ON-OFF) - - -×EBD fail signal condi-
tion is displayed (ON-
OFF)
ABS FAIL SIG (ON-OFF) -×-×ABS operation (ON-
OFF) condition is dis-
played.
CAN COMM (OK-NG) - -×-CAN communication
signal (OK/NG) condi-
tion is displayed.

TF-48
TROUBLE DIAGNOSIS
*:In case that the output signal from ESP/TCS/ABS control unit malfunction in wheel speed system.
ACTIVE TEST
CAUTION:
●Do not perform active test while driving.
●Active test cannot be performed with 4WD warning lamp on.
Operation procedure
1. Connect CONSULT-II to data link connector and start engine.
2. Touch "START" on the display.
3. Touch "ALL MODE 4WD".
4. Touch "ACTIVE TEST".
5. Test item selection screen is displayed.
6. Touch test item.
7. Touch "START" with "MAIN SIGNALS" line inverted.
8. Active test screen is displayed.
CAN CIRC 1 (OK-UNKWN) - -×-
CAN communication
signal (OK/UNKWN)
condition is displayed. CAN CIRC 2 (OK-UNKWN) - -×-
CAN CIRC 3 (OK-UNKWN) - -×-
EBD SIGNAL (ON-OFF) - - -×EBD operation (ON-
OFF) condition is dis-
played
ABS SIGNAL - - -×ABS operation (ON-
OFF) status is dis-
played
AMR SIGNAL - - -×TCS engine control
operation (ON/OFF)
status is displayed
BMR SIGNAL - - -×TCS brake control
operation (ON/OFF)
status is displayed
VDC SIGNAL (ON-OFF) - - -×ESP operation (ON-
OFF) condition is dis-
played
VDC FAIL (ON-OFF) - - -×ESP fail signal condi-
tion is displayed (ON-
OFF)
ETS FAIL REQ (ON-OFF) -×-×ETS fail request signal
condition is displayed*
(ON-OFF) Item (Unit)Monitor item selection
Remarks
ECU INPUT SIG-
NALSMAIN
SIGNALSCAN DIAG SUP-
PORT MNTRSELECTION
FROM MENU
SDIA0625E

TROUBLE DIAGNOSIS
TF-49
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4WD solenoid valve
Under the vehicle stopped with engine ON, touch UP, DOWN on
screen. Adjust 4WD solenoid command current.
Check the monitor current at that time. If monitor current is within
approx. ±10%, light switch is normal.
CAUTION:
Do not continuously energize solenoid for long period of time.
ECU PART NUMBER
Ignore the ECU part number displayed in the ECU PART NUMBER MODE.
Refer to parts catalog to order the ECU.
Component InspectionEDS000HC
4WD SOLENOID VALVE
●Disconnect connector B152 and measure resistance between
terminals 1(L/W) and 2(LG).
System InspectionEDS000IO
CONTROL UNIT POWER SUPPLY SYSTEM
Inspection procedure
Disconnect 4WD control unit connector. Check for continuity and voltage between each terminal of vehicle-
side connector and body ground.
SDIA0626E
Resistance : Approx. 2.45Ω
SDIA0136E
Terminal No. Signal name Measuring condition Measurement value
3, 4, 6, 16, 17, 18, 24, 109 Power supply Ignition switch ON Battery voltage
104, 106, 108, 111, 113, 115 Ground Ignition switch OFF Continuity should exist.
SDIA0129E

TF-50
TROUBLE DIAGNOSIS
G-SENSOR SYSTEM
Inspection Procedure
1. INSPECTION START
Using CONSULT-II perform self-diagnosis.
OK or NG
OK >> Diagnosis completed.
NG >> GO TO 2.
2. CONNECTOR INSPECTION
1. Disconnect control unit connector and G-sensor connector. Check the control unit connector terminal for
deformation and poor connection. Reconnect the connector.
2. Using CONSULT-II perform self-diagnosis again.
OK or NG
OK >> Diagnosis completed.
NG >> GO TO 3.
SFIA0064E