NISSAN X-TRAIL 2003 Service Repair Manual

TROUBLE DIAGNOSIS
BRC-87
[ESP/TCS/ABS]
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ON and OFF Timing for ABS Warning Lamp, ESP OFF Indicator Lamp, SLIP Indicator Lamp,
Brake Warning Lamp
×: ON –: OFF
NOTE:
1. Brake warning lamp will turn on in case of operating parking brake (switch turned ON) or of actuating
brake fluid level switch (brake fluid is insufficient).
2. After starting engine, turn off.
Basic InspectionEFS004H9
BASIC INSPECTION 1 BRAKE FLUID AMOUNT, LEAKS, AND BRAKE PADS INSPECTION
1. Check fluid level in the brake reservoir tank. If fluid level is low, refill brake fluid.
2. Check brake piping and around ESP actuator for leaks. If there is leaking or oozing fluid, check the follow-
ing items.

If ESP actuator connection is loose, tighten piping to the specified torque and re-perform the leak
inspection to make sure there are no leaks.

If there is damage to the connection flare nut or ESP actuator screw, replace the damaged part and re-
perform the leak inspection to make sure there are no leaks.

When there is fluid leaking or oozing from a part other than ESP actuator connection, if fluid is just ooz-
ing out, use a clean cloth to wipe off the oozing fluid and re-check for leaks. If fluid is still oozing out,
replace the damaged part.

When there is fluid leaking or oozing at ESP actuator, if fluid is just oozing out, use a clean cloth to wipe
off oozing fluid and re-check for leaks. If fluid is still oozing out, replace ESP actuator body.
CAUTION:
ESP actuator body cannot be disassembled.
3. Check brake pad degree of wear. Refer to BR-27, "
PAD THICKNESS" in “Front Disc Brake” and BR-32,
"PAD WEAR INSPECTION" in “Rear Disc Brake”
BASIC INSPECTION 2 POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION
Make sure battery positive cable, negative cable and ground connection are not loose. If looseness is
detected, tighten the cables. In addition, check the battery voltage to make sure it has not dropped and alter-
nator is normal.
ConditionABS warning
lampESP OFF indi-
cator lampSLIP indicator
lampBrake warning
lamp [Note 1]Remarks
Ignition SW OFF. – – – – –
Approx. 2 seconds after igni-
tion switch is turned ON.×××× [Note 2] –
Approx. 2 seconds later after
ignition switch ON.–––× [Note 2]Go out 2 seconds after
ignition switch is turned
ON.
ESP OFF SW is turned ON.
(ESP/TCS function is OFF.)–×–– –
ESP/TCS/ABS error.×××–There is an ESP/TCS/
ABS control unit error.
(Power, ground or sys-
tem malfunction)
When ESP/TCS is not func-
tioning normally.–××––
EBD error.××××–

BRC-88
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS

BASIC INSPECTION 3 ABS WARNING LAMP, ESP OFF INDICATOR LAMP, SLIP INDICATOR
LAMP AND BRAKE WARNING LAMP INSPECTION
1. Make sure ABS warning lamp, ESP OFF indicator lamp (when ESP OFF switch is OFF), and SLIP indica-
tor lamp turns on approximately 2 second, and brake warning lamp turns on when ignition switch is turned
ON. If they do not, check ESP OFF indicator lamp and then ESP OFF switch. Refer to BRC-107, "
ESP
OFF SWITCH" . Check CAN communications. Refer to “CAN Communication Inspection”. If there are no
errors with ESP OFF switch and CAN communication system, check combination meter. Refer to DI-4,
"COMBINATION METERS" .
2. Make sure ABS warning lamp, ESP OFF indicator lamp, SLIP indicator lamp turn off approximately 2 sec-
ond after turn ignition switch ON, and brake warning lamp turns off after engine starts. If lamps do not turn
off, perform self-diagnosis.
3. With engine running, make sure ESP OFF indicator lamp turns on and off when ESP OFF switch is turned
ON and OFF. If indicator lamp status does not correspond to switch operation, check the ESP OFF switch
system. Refer to BRC-107, "
ESP OFF SWITCH" .
4. Make sure ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator lamp turn off 2 seconds after
engine is started. If ABS warning lamp, ESP OFF indicator lamp, and SLIP indicator lamp have not turned
off 10 seconds after engine has been started, perform self-diagnosis of ESP/TCS/ABS control unit.
5. After performing the self-diagnosis, be sure to erase the error memory. Refer to BRC-27, "
SELF-DIAGNO-
SIS" .
CAUTION:
Brake warning lamp turns on when parking brake is operated (switch on) and brake fluid level
switch is activated (leak of brake fluid).

TROUBLE DIAGNOSIS
BRC-89
[ESP/TCS/ABS]
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Inspection 1 Wheel Sensor SystemEFS004MT
INSPECTION PROCEDURE
Check each part according to CONSULT-II self-diagnostic results, and then identify the parts to be replaced.
CAUTION:
Do not check between wheel sensor terminals.
1. CHECK TYRE
Check air pressure, wear and size.
Are air pressure, wear and size within standard?
YES >> GO TO 2.
NO >> Adjust air pressure, or replace tyre.
2. CHECK SENSOR AND SENSOR ROTOR

Check sensor and sensor rotor.

Check sensor rotor rubber for damage.

Check sensor for disconnection or looseness.
Is inspection result OK?
OK >> GO TO 3.
NG >> Repair sensor mount or replace sensor rotor.
3. CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnostic results.
Is above displayed on self-diagnosis displayed?
YES >> GO TO 4.
NO >> Check is completed
4. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect connector between ESP/TCS/ABS control unit and malfunctioning
wheel sensor, and check for deformation, disconnection and looseness. Repair or replace if necessary.
2. Reconnect connectors, drive vehicle at 30 km/h or more for approximately 1 minute, and then perform
self-diagnosis.
OK or NG
OK >> Poor connection of connector terminal
NG >> GO TO 5.
Self-diagnosis results
ABS SENSOR [ABNORMAL SIGNAL]
FR RH SENSOR-1
FR RH SENSOR-2
FR LH SENSOR-1
FR LH SENSOR-2
RR RH SENSOR-1
RR RH SENSOR-2
RR LH SENSOR-1
RR LH SENSOR-2
SFIA0625E

BRC-90
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS

5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector and ESP/TCS/ABS control unit connector.
2. Check continuity between terminals. (Also check continuity
when the steering wheel is turned right and left and when the
sensor harness inside the wheel house is moved.)
Is inspection result OK?
OK >> GO TO 6.
NG >> Repair harness and connector between ESP/TCS/ABS control unit and wheel sensor.
6. CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Connect wheel sensor and ESP/TCS/ABS control unit connec-
tors.
2. Turn ignition switch ON and check voltage between power sup-
ply terminal and ground.
OK or NG
OK >> Replace wheel sensor.
NG >> Replace ESP/TCS/ABS control unit.
SFIA2200E
Power supply circuit Signal circuit Ground circuit
WheelESP/TCS/ABS
control unit
(harness con-
nector E122)Wheel sensor
(harness con-
nector)ESP/TCS/ABS
control unit
(harness con-
nector E122)Wheel sensor
(harness con-
nector)ESP/TCS/ABS con-
trol unit (harness
connector E122)
(Signal)Ground
Front RH (E17) 16 (W) 1 (W) 15 (B) 2 (B) 15 (B), 16 (W) —
Front LH (E59) 10 (L/W) 1 (L/W) 8 (L/Y) 2 (L/Y) 8 (L/Y), 10 (L/W) —
Rear RH (B130) 12 (B/W) 1 (B/W) 11 (L/R) 2 (L/R) 11 (L/R), 12 (B/W) —
Rear LH (B126) 14 (BR) 1 (BR) 13 (BR/W) 2 (BR/W) 13 (BR/W), 14 (BR) —
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.
Vo l ta g e
Front RH 1 (W) - Ground : 8V or more
Front LH 1 (L/W) - Ground : 8V or more
Rear RH 1 (B/W) - Ground : 8V or more
Rear LH 1 (BR) - Ground : 8V or more
SFIA2016E

TROUBLE DIAGNOSIS
BRC-91
[ESP/TCS/ABS]
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Inspection 2 Engine SystemEFS001AC
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Are any items other than above indicated in the self-diagnosis results?
YES >> Repair or replace affected items.
NO >> GO TO 2.
2. SELF-DIAGNOSIS RESULT CHECK 2
1. Perform the ECM self-diagnosis and repair or replace affected items, then perform the ECM self-diagno-
sis again.
2. Perform the ESP/TCS/ABS control unit self-diagnosis again.
Is inspection result OK?
YES >> Inspection end
NO >> Repair or replace affected items. Perform the self-diagnosis again.
Inspection 3 ESP/TCS/ABS Control Unit SystemEFS001AD
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK
Check the self-diagnosis results.
Are any items other than
“CONTROLLER FAILURE” indicated in the self-diagnosis results?
YES >> Repair or replace affected items. Perform the self-diagnosis again.
NO >> Replace ESP/TCS/ABS control unit and perform ESP/TCS/ABS control unit self-diagnosis again.
Inspection 4 Pressure Sensor and the Circuit between Pressure Sensor and
ESP/TCS/ABS Control Unit.
EFS001AE
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Is
“ PRESS SEN CIRCUIT” indicated in the self-diagnosis results?
>> GO TO 2.
Self-diagnosis results
ENGINE SYSTEM 1
ENGINE SYSTEM 2
ENGINE SYSTEM 3
ENGINE SYSTEM 4
ENGINE SYSTEM 6
Self-diagnosis results
CONTROLLER FAILURE
Self-diagnosis results
PRESS SEN CIRCUIT

BRC-92
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS

2. SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors of pressure sensor and ESP/TCS/ABS control unit, and connect them again cor-
rectly.
2. Perform ESP/TCS/ABS control unit self-diagnosis again.
Is inspection result OK?
YES >> Repair or replace the poorly connected connector, then perform the self-diagnosis again.
NO >> GO TO 3.
3. PRESSURE SENSOR CIRCUIT INSPECTION
1. Disconnect connectors of pressure sensor and ESP/TCS/
ABS control unit.
2. Check for continuity between ESP/TCS/ABS control unit and
pressure sensor (harness connector E67).
Is inspection result OK?
YES >> GO TO 4.
NO >> Repair or replace the disconnected harness.
4. PRESSURE SENSOR INSPECTION
Check the “PRESS SENSOR” value in “DATA MONITOR”.
Is inspection result OK?
YES >> Perform ESP/TCS/ABS control unit self-diagnosis again.
NO >> Pressure sensor malfunction. Replace ESP actuator (with the pressure sensor).
SFIA2192E
ESP/TCS/ABS control unit
(harness connector E122)Pressure sensor
(ESP actuator harness connector E67)Continuity
69 (P/L) 30 (P/L) Yes
68 (L/OR) 31 (L/OR) Yes
67 (G/B) 32 (G/B) Yes
Condition PRESS SENSOR (Data monitor)
Brake pedal depressed Positive value
Brake pedal released Approx. 0 bar

TROUBLE DIAGNOSIS
BRC-93
[ESP/TCS/ABS]
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Inspection 5 Steering Angle Sensor and Circuit between Steering Angle Sensor
and ESP/TCS/ABS Control Unit.
EFS001AF
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Perform the inspection 15.
Refer to BRC-107, "
Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and Steering
Angle Sensor" .
Is
“ST ANG SEN CIRCUIT” indicated in the self-diagnosis results.
>> GO TO 2.
2. SELF-DIAGNOSIS RESULT CHECK 2
1. Repair or replace the poorly connected connector
–Check connector housing for disconnect, loose, bent and collapse terminals
If any malfunction are detected, repair or replace the applicable part.
2. Perform the ESP/TCS/ABS control unit self-diagnosis again.
Is inspection result OK?
YES >> Inspection END
NO >> GO TO 3.
Self-diagnosis results
ST ANGLE SEN CIRCUIT

BRC-94
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS

3. STEERING ANGLE SENSOR CIRCUIT CHECK
1. Disconnect ESP/TCS/ABS control unit connector and steering angle sensor connector.
2. Check for continuity between ESP/TCS/ABS control unit and
steering angle sensor (harness connector M81).
3. Check for the continuity between the steering angle sensor and
ground.
Is inspection result OK?
YES >> GO TO 4.
NO >> Repair or replace the disconnected harness.
4. DATA MONITOR CHECK
Perform the “STR ANGLE SIG” value in “DATA MONITOR” and check that it is in normal condition.
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> Replace the spiral cable (with the steering angle sensor) and adjust the neutral position of steer-
ing angle sensor. BRC-51, "
Adjustment of Steering Angle Sensor Neutral Position" .
SFIA2032E
ESP/TCS/ABS control unit
(harness connector E122)Steering angle sensor
(harness connector M81)Continuity
2 (Y/R) 3 (Y/R) Yes
SFIA2033E
Steering angle sensor
(harness connector M81)ground Continuity
2 (B/R) — Yes
Steering condition STR ANGLE SIG (Data monitor)
Straight-ahead – 5 ° to + 5 °
Turn the wheel to the right by 90°Approx. + 90 °
Turn the wheel to the left by 90°Approx. – 90 °

TROUBLE DIAGNOSIS
BRC-95
[ESP/TCS/ABS]
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Inspection 6 Yaw Rate/Side G sensor and the Circuit between Yaw Rate/Side G
sensor and ESP/TCS/ABS Control Unit.
EFS001AG
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
CAUTION:
When vehicle on a turn-table at an entrance of parking lot or on a moving unit, ESP OFF indicator
lamp turns ON, and the self-diagnosis with CONSULT-II may indicate that yaw rate sensor system is
malfunction. In this case, yaw rate sensor is not malfunction. Move the vehicle from the turn-table or
other moving unit, and restart the engine. This will return the status normal.
Are
“ YAW RATE SENSOR ” and “ SIDE G-SEN CIRCUIT ” indicated in the self-diagnosis results.
YES >> GO TO 2.
NO >> INSPECTION END.
2. SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors of yaw rate/side G sensor and ESP/TCS/
ABS control unit.
2. Check for continuity between ESP/TCS/ABS control unit and
yaw rate/side G sensor.
Is inspection result OK?
YES >> GO TO 3.
NO >> Repair or replace the disconnected harness.
Self-diagnosis results
YAW RATE SEN
SIDE G-SEN CIRCUIT
SFIA2180E
ESP/TCS/ABS control unit
(harness connector E122)Yaw rate/side G-sensor
(harness connector B112)Continuity
78 (L/B) 1 (L/B) Yes
77 (Y/B) 2 (Y/B) Yes
34 (OR) 3 (OR) Yes
79 (LG/R) 4 (LG/R) Yes
18 (GY/L) 5 (GY/L) Yes
80 (W/R) 6 (W/R) Yes

BRC-96
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS

3. YAW RATE SENSOR/SIDE G SENSOR CIRCUIT CHECK
Check that “YAW RATE SEN” and “SIDE G-SENSOR” are in normal operation in “DATA MONITOR”.
Is inspection result OK?
YES >> Perform ESP/TCS/ABS control unit self-diagnosis again.
NO >> The yaw rate/side G sensor malfunction. After replacing the sensor, perform the self-diagnosis of
ESP/TCS/ABS control unit again.
Inspection 7 Solenoid Valve, ESP Switch-over Solenoid Valve and CircuitEFS001AI
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Are any self-diagnosis result items above indicated?
YES >> GO TO 2.
NO >> INSPECTION END.
2. SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect ESP/TCS/ABS control unit connector and solenoid valve connectors. Securely connect them
again.
2. Perform the self-diagnosis again.
Are any self-diagnosis result items indicated again?
YES >> GO TO 3.
NO >> Repair or replace the poorly connected connector.Vehicle statusYAW R AT E S E N
(DATA MONITOR) SIDE G-SENSOR
(DATA MONITOR)
While the vehicle is stopped
– 4 to + 4 °/s
–1.1 to + 1.1 m/s
2
Right turn Negative value Negative value
Left turn Positive value Positive value
Self-diagnosis results
FR LH IN ABS SOL
FR LH OUT ABS SOL
RR RH IN ABS SOL
RR RH OUT ABS SOL
FR RH IN ABS SOL
FR RH OUT ABS SOL
RR LH IN ABS SOL
RR LH OUT ABS SOL
USV LINE [FL-RR]
USV LINE [FR-RL]
HSV LINE [FL-RR]
HSV LINE [FR-RL]