2001 NISSAN X-TRAIL Service Repair Manual

display isofix MPG weight spare tire brake rotor

Page 2809 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
BRC-25
[4WD/ABS]
C
D
E
G
H
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L
MA
B
BRC
Display Item List
Faulty lines Malfunction detecting condition Check harness
Front RH wheel sensor [OPEN]Either of following causes may be

TROUBLE DIAGNOSIS
BRC-25
[4WD/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Display Item List
Faulty lines Malfunction detecting condition Check harness
Front RH wheel sensor [OPEN]Either of following causes may be possible. Circuit of front RH
wheel sensor is open. Irregularly high input voltage is caused by
a short to power supply on signal lines.
Wheel sensor harness Front LH wheel sensor [OPEN]Either of following causes may be possible. Circuit of front LH
wheel sensor is open. Irregularly high input voltage is caused by
a short to power supply on signal lines.
REAR RH wheel sensor [OPEN]Either of following causes may be possible. Circuit of rear RH
wheel sensor is open. Irregularly high input voltage is caused by
a short to power supply on signal lines.
REAR LH wheel sensor [OPEN]Either of following causes may be possible. Circuit of rear LH
wheel sensor is open. Irregularly high input voltage is caused by
a short to power supply on signal lines.
Front RH wheel sensor [short 1]or
Front RH wheel sensor [short 2]
(Note 1), (Note 2)At RH front wheel sensor, following conditions occur: irregularly
high or low input voltage by short to power supply or ground on
signal lines, malfunction input signal
Front LH wheel sensor [short 1]
or front LH wheel speed sensor
[short 2]
(Note 1), (Note 2)At LH front wheel sensor, following conditions occur: irregularly
high or low input voltage by short to power supply or ground on
signal lines, malfunction input signal
Rear RH wheel sensor [SHORT]
(Note 1), (Note 2)At RH rear wheel sensor, following conditions occur: irregularly
high or low input voltage by short to power supply or ground on
signal lines, malfunction input signal
Rear LH wheel sensor [SHORT]
(Note 1), (Note 2)At LH rear wheel sensor, following conditions occur: irregularly
high or low input voltage by short to power supply or ground on
signal lines, malfunction input signal
FR RH IN ABS SOL
[OPEN] [SHORT]At RH front wheel ABS inlet solenoid valve, following conditions
occur: open circuit, output voltage is irregularly lower or higher
than control value by short to ground on control line.
ABS solenoid valve and
actuator relay harness FR LH IN ABS SOL
[OPEN] [SHORT]At LH front wheel ABS inlet solenoid valve, following conditions
occur: open circuit, output voltage is irregularly lower or higher
than control value by short to ground on control line.
RR RH IN ABS SOL
[OPEN] [SHORT]At RH rear wheel ABS inlet solenoid valve, following conditions
occur: open circuit, output voltage is irregularly lower or higher
than control value by short to ground on control line.
RR LH IN ABS SOL
[OPEN] [SHORT]At LH rear wheel ABS inlet solenoid valve, following conditions
occur: open circuit, output voltage is irregularly lower or higher
than control value by short to ground on control line.
FR RH OUT ABS SOL
[OPEN] [SHORT]At RH front wheel ABS outlet solenoid valve, following condi-
tions occur: open circuit, output voltage is irregularly lower or
higher than control value by short to ground on control line.
FR LH OUT ABS SOL
[OPEN] [SHORT]At LH front wheel ABS outlet solenoid valve, following conditions
occur: open circuit, output voltage is irregularly lower or higher
than control value by short to ground on control line.
RR RH OUT ABS SOL
[OPEN] [SHORT]At RH rear wheel ABS outlet solenoid valve, following condition
s
occur: open circuit, output voltage is irregularly lower or higher
than control value by short to ground on control line.
RR LH OUT ABS SOL
[OPEN] [SHORT]At LH rear wheel ABS outlet solenoid valve, following conditions
occur: open circuit, output voltage is irregularly lower or higher
than control value by short to ground on control line.
ABS motor [ON error]ABS actuator motor turned ON when the ABS motor is con-
trolled OFF.ABS motor relay and
harness
ABS motor [OFF error]ABS actuator motor turned OFF when the ABS motor is con-
trolled ON.

Page 2810 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual BRC-26
[4WD/ABS]
TROUBLE DIAGNOSIS
(Note 1): When vehicle was stuck on slippery road, and spin its wheels for Approx. 10 - 80 seconds (the period depends on vehicle
speed). ABS

BRC-26
[4WD/ABS]
TROUBLE DIAGNOSIS
(Note 1): When vehicle was stuck on slippery road, and spin its wheels for Approx. 10 - 80 seconds (the period depends on vehicle
speed). ABS warning lamp may come on. However, this is not malfunction.
(Note 2): Repair short circuit in sensor. ABS warning lamp will come on when ignition switch is turned ON. According to self-diagnosis
operation procedure, drive vehicle at Approx. 30 km/m (19 MPH). Then check ABS warning lamp goes out in about one minute.
CAUTION:
If “ALL MODE 4WD” is not displayed on system selection screen, check the following: 4WD actuator and control unit, data link
connector harness, and No. Of CONSULT-II program card
DATA MONITOR
●For details of data monitor function, refer to CONSULT -II Instruction 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 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”.
ABS actuator relay [ON error] ABS actuator relay turned ON wheel it is controlled OFF.
ABS actuator relay and
harness ABS ACTUATOR RELAY
[OFF malfunction]ABS actuator relay turned OFF wheel it is controlled ON.
BATTERY VOLTAGE [VB-HIGH] 4WD control module power voltage is excessively high.
Control unit power sup-
ply circuit
BATTERY VOLTAGE [VB-LOW] 4WD control module power voltage is excessively low.
DECEL G-SENSOR Longitudinal G -sensor output voltage is outside specification.
G -sensor harness
G-SENSOR VOLTAGEPower voltage of longitudinal G -sensor remains irregularly 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 irregularly high or low
compared with the specification.
CONTROL UNIT Processing function of 4WD/ABS control unit is malfunctioning.4WD/ABS control unit,
power and ground cir-
cuits
DECEL G-SEN MONI Output voltage of longitudinal G -sensor is outside specification G -sensor harness
DECEL G-SEN IN Output voltage of longitudinal G -sensor is outside specification G -sensor harness
3 V POWER SUPPLY CHECK4WD/ABS control unit internal 3V power supply is malfunction-
ingControl 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 cir-
cuit in 4WD solenoid valve.
CAN COMM
●CAN communication function of 4WD control units is not mal-
functioning.
●CAN communication function of EPS control unit, ECM is mal-
functioning.CAN communication
system of 4WD control
unit.
ABS 4WD COMM4WD/ABS control unit internal 3V power supply is malfunction-
ingEPS control unit
and harness Faulty lines Malfunction detecting condition Check harness

Page 2811 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
BRC-27
[4WD/ABS]
C
D
E
G
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MA
B
BRC
7. Return to monitor item selection screen. Touch any of “ECU INPUT SIGNALS”, “MAIN SIGNALS”,
“CAN DIG SUPPORT MINTR” or “SE

Page 2812 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual BRC-28
[4WD/ABS]
TROUBLE DIAGNOSIS
×: Applicable
–: Not applicableRR RH OUT SOL (ON/
OFF)–××Operating condition
(ON/OFF) of rear RH
ABS outlet solenoid
valve is displayed.
RR LH IN SOL (ON/

Page 2813 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
BRC-29
[4WD/ABS]
C
D
E
G
H
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J
K
L
MA
B
BRC
ACTIVE TEST
Operation Procedure
CAUTION:
●Do not perform active test wheel running.
●Be sure completely bleed air from brake system.
�

Page 2814 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual BRC-30
[4WD/ABS]
TROUBLE DIAGNOSIS
ABS motor
Touch “ON” and “OFF” on screen. Check ABS motor relay operates
as shown in the following chart.
NOTE:
●If active test is performed with bra

Page 2815 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual TROUBLE DIAGNOSIS
BRC-31
[4WD/ABS]
C
D
E
G
H
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K
L
MA
B
BRC
Continuity Exists, Resistance Value
Insulation Inspection
●Check resistance value between each pair of ABS solenoid connector

Page 2816 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual BRC-32
[4WD/ABS]
TROUBLE DIAGNOSIS
4WD SOLENOID VALVE
●Disconnect connector B152 and measure resistance between
terminals No. 1 and No. 2.
Basic InspectionEFS001BK
BASIC INSPECTION 1 BRAKE FLU

BRC-32
[4WD/ABS]
TROUBLE DIAGNOSIS
4WD SOLENOID VALVE
●Disconnect connector B152 and measure resistance between
terminals No. 1 and No. 2.
Basic InspectionEFS001BK
BASIC INSPECTION 1 BRAKE FLUID LEVEL AND LEAKAGE INSPECTION
1. Check fluid level in brake reservoir tank. If fluid level is low, refill brake fluid.
2. Check area around brake piping and ABS actuator for leaks. If a leak or oozing is detected, check as fol-
lows:
● If connections at ABS actuator are loose, tighten piping to the specified torque. Then check again for
leaks, and be sure there is no fluid leak.
● If the flare nuts at the connections and the threads of the ABS actuator are damaged, replace the dam-
aged parts. Then check again for leaks, and make sure that there is no fluid leak.
●If leak or oozing is detected except for ABS actuator connections, wipe it with clean cloth. Then check
again for leaks. If there is still leak or oozing, replace damaged part.
●If leak or oozing is detected on ABS actuator, wipe with a clean cloth. Check again for leaks, and if
there is still leak or oozing, replace ABS actuator.
CAUTION:
ABS actuator body cannot be disassembled.
BASIC INSPECTION 2 INSPECTION FOR LOOSE POWER SUPPLY TERMINAL
Check battery for looseness on battery positive/negative terminals and ground connection.
BASIC INSPECTION 3 ABS/4WD WARNING LAMP INSPECTION
1. Be sure ABS warning lamp turns on when ignition switch is turned ON. If it does not turn on, check ABS
warning lamp harness.
2. Check 4WD warning lamp illuminates with ignition switch ON. If not so, check 4WD warning lamp path.
3. Be sure ABS warning lamp turns off after approximately 1 second when ignition switch is turned ON. If it
does not turn off, perform self-diagnosis.
4. Be sure 4WD warning lamp turns off after several seconds when engine is started. If it does not turn off,
perform self-diagnosis.
5. After driving the vehicle at Approx. 30km/h (19MPH) for a few seconds, check 4WD warning lamp and
ABS warning lamp do not illuminate.
6. After completing the self-diagnosis, always erase the diagnosis memory.
Wheel Sensor SystemEFS001BL
INSPECTION PROCEDURE
1. TIRE INSPECTION
Check tire air pressure, wear, and size.
Are air pressure, wear, and size within specifications?
YES >> GO TO 2.
NO >> Adjust air pressure, or replace tire.4WD solenoid valve 1 - 2 : Approx. 2.45 Ω
SDIA0136E

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