2003 NISSAN X-TRAIL display

TF-32
ALL MODE 4X4 SYSTEM
4WD MODE SWITCT
AUTO mode (AUTO indicator lamp ON)
lElectronic control allows optimal distribution of torque to front/rear wheels to match road conditions.
lMakes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.
lOn roads which do not require 4WD, it contributes to improved fuel economy by driving in conditions close
to front-wheel drive.
lSensors determine the vehicle's turning condition, and in response tight cornering/braking are controlled
by distributing optimum torque to rear wheels.
NOTE:
lWhen driving in AUTO mode or LOCK mode, if there is a large difference between front and rear wheel
speed which continues for a long time, oil temperature of drive system parts becomes too high and 4WD
warning lamp flashes rapidly. (When 4WD warning lamp flashes, vehicle changes to front-wheel drive
conditions.)
lWhen driving in AUTO mode, 4WD warning lamp may flash slowly if there is a significant difference in
pressure or wear between tires. At this time, vehicle performance is not fully available and cautious driving
is required. (Continues until engine is turned OFF.)
lIf 4WD warning lamp is flashing rapidly, stop vehicle and allow it to idle for some time. Flashing will stop
and AUTO mode will be restored.
lIf the warning lamp flashes slowly during driving but remains OFF after engine is restarted, the system is
normal. If it again flashes slowly after driving for some time, vehicle must be inspected.
lWhen the difference of revolution speed between the front and rear wheel with AUTO mode the shift
switch occasionally changes to LOCK mode automatically. This is not malfunction.
LOCK mode (LOCK indicator lamp and AUTO indicator lamp ON)
lFront/rear wheel torque distribution is fixed, ensuring stable driving when climbing slopes.
lWhen LOCK mode is selected, vehicle will switch automatically to AUTO mode if vehicle speed increases.
If vehicle speed then decreases, the vehicle automatically returns to direct 4-wheel driving conditions.
NOTE:
If there is a significant difference in pressure or wear between tires, full vehicle performance is not available.
Tire conditions are detected, and LOCK mode may be prohibited, or else speeds at which LOCK mode is
enabled may be restricted.
2WD mode (indicator lamps OFF)
Vehicle is in front-wheel drive.
NOTE:
lIf front wheels are slipping in 2WD mode, do not switch to AUTO or LOCK. This can cause difficulties for
the system.
lThe shift switch even if the shift switch is in 2WD mode, the sift switch occasionally automatically change
to 4WD mode depending on the driving condition (For example; Depressing the acceleration firmly). this is
not malfunction. How ever, 4WD mode indicator lamp dose not illuminate.
4WD WARNING LAMP
Turns ON when there is a malfunction in 4WD system. It indicates that fail-safe mode is engaged and vehicle
is in 2WD.
Also turns ON when ignition switch is turned ON, for purpose of bulb check. Turns OFF approximately for 3
seconds after the engine starts if system is normal.
4WD waning lamp indiction
Condition Display 4WD warning lamp
Self-diagnosisWhen self-diagnosis is performed, indicates location of
malfunction by number of flashes.-
Lamp checkTurns ON when engine is started to check for burned-out
lamps.Turns ON when ignition switch
is turned ON. Turns OFF
approximately 3 seconds after
engine start.
4WD system malfunction Turns ON if there is malfunction in 4WD system. ON

ALL MODE 4X4 SYSTEM
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FAIL- SAFE FUNCTION
lIf a malfunction occurs in 4WD electrical system, and control unit detects the malfunction, 4WD warning
lamp on gauge turns ON to inform driver of system malfunction.
lWhen 4WD warning lamp is ON, vehicle is in 2WD.
System DiagramEDS000IL
CAN CommunicationEDS000IP
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
SYSTEM DIAGRAM
Largedifferenceindiameteroffront/
rear tires4WD warning lamp flashes slowly. Flashes once every 2 seconds.
Difference in front/rear wheel speed
continues and oil temperature of
drive system has increased.4WD warning lamp flashes rapidly. Flashes twice each second.
Other than above (system normal) OFF OFFCondition Display 4WD warning lamp
SFIA0287E
SKIA0885E

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
4WDWARNLAMP(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–0-4mm,4-8mm,
8mm -Front/Rear tire size differ-
ence, wear condition
PBRAKESW(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
stopped0km/h(0MPH)
Speedometer and harness
Vehicle runningAlmost 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
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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.)
lIf "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:
lCheck again to make sure that there is NO FAILURE on other parts.
lIf 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:
lIf "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
lWhen several systems including CAN communication system indicates troubles, perform trouble
diagnosis of the CAN communication primarily.
DATA MONITOR
lFor 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
lCAN communication function of 4WD control unit is malfunc-
tioning.
lCAN 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
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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
PBRAKESW(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:
lDo not perform active test while driving.
lActive 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.
CANCIRC1(OK-UNKWN) - -´-
CAN communication
signal (OK/UNKWN)
condition is displayed. CANCIRC2(OK-UNKWN) - -´-
CANCIRC3(OK-UNKWN) - -´-
EBD SIGNAL (ON-OFF) - - -´EBD operation (ON-
OFF) condition is dis-
played
ABSSIGNAL ---´ABS operation (ON-
OFF) status is dis-
played
AMRSIGNAL ---´TCS engine control
operation (ON/OFF)
status is displayed
BMRSIGNAL ---´TCS brake control
operation (ON/OFF)
status is displayed
VDC SIGNAL (ON-OFF) - - -´ESP operation (ON-
OFF) condition is dis-
played
VDCFAIL(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
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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
lDisconnect connector B15 and measure resistance between ter-
minals 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. 2.45W
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