NISSAN X-TRAIL 2001 Service Repair Manual

TROUBLE DIAGNOSIS
BRC-97
[ESP/TCS/ABS]
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3.STEERING WHEEL ANGLE SENSOR CIRCUIT CHECK
1. Disconnect the ESP/TCS/ABS control unit connector and the steering wheel angle sensor connector.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector B111) and the steering wheel angle sen-
sor (vehicle-side connector M81).
3. Check for continuity between the steering wheel 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 wheel angle sensor) and adjust the neutral position of
steering wheel angle sensor. BRC-57, "
Adjustment of Neutral Position of Steering Wheel Angle
Sensor" .
SFIA0899E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Steering wheel angle sensor
(Vehicle-side connector M81)Continuity
2 (Y/R) 3 (Y/R) Yes
SFIA0898E
Steering wheel angle sensor
(Vehicle-side connector M81)ground Continuity
2 (B) — Yes
Steering condition STR ANGLE SIG (Data monitor)
Straight-ahead – 5 deg to + 5 deg
Tun the wheel to the right by 90°Approx. + 90 deg
Tun the wheel to the left by 90°Approx. – 90 deg

BRC-98
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Inspection 6 Yaw Rate Sensor and Side G sensor and the Circuit between Yaw
Rate Sensor and 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 the vehicle on a turn-table at an entrance of parking lot or on a moving unit, the ESP OFF indica-
tor lamp turns ON, and the self-diagnosis with CONSULT-II may indicate that the yaw rate sensor sys-
tem is malfunction. In this case, the 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.
>> GO TO 2.
2. SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors of the yaw rate and side G sensor and
the ESP/TCS/ABS control unit.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector B111) and the yaw rate and side G sen-
sor (vehicle-side connector B112).
Is inspection result OK?
YES >> GO TO 3.
NO >> Repair or replace the disconnected harness.
Self-diagnosis results
CONSULT-II indication item
YAW RATE SENSOR
SIDE G-SEN CIRCUIT
SFIA0916E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Yaw rate and side G-sensor
(Vehicle-side 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

TROUBLE DIAGNOSIS
BRC-99
[ESP/TCS/ABS]
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3.YAW RATE SENSOR AND SIDE G SENSOR CIRCUIT CHECK
Check that the “YAW RATE SEN” and the “SIDE G-SENSOR” are in normal operation in “DATA MONITOR”.
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> The yaw rate and side G sensor malfunction. After replacing the sensor, perform the self-diagno-
sis of the 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?
>> GO TO 2.
2.SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect the 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 deg/s
–1.1 to + 1.1 m/s
2
Right turn Negative value Negative value
Left turn Positive value Positive value
Self-diagnosis results
CONSULT-II indication item
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]

BRC-100
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
3. SOLENOID VALVE INPUT SIGNAL CHECK.
1. Disconnect the ESP/TCS/ABS control unit connector.
2. Turn on the ignition switch and check the voltage between the
ESP/TCS/ABS control unit (vehicle-side connector B111) and
body ground.
Is inspection result OK?
YES >> Check the ESP/TCS/ABS control unit power supply circuit.
NO >> GO TO 4.
SFIA0900E
VDC/TCS/ABS control unit
(Vehicle-side connector B111)Body ground Voltage
26 (W/G) –
Battery voltage (approx.12V) 5 (G/OR) –
6 (PU/W) –
53 (P) –
55 (R/Y) –
3 (Y/G) –
4 (GY/R) –
25 (LG) –
49 (B/W) –
50 (R/G) –
54 (W/L) –
52 (PU) –

TROUBLE DIAGNOSIS
BRC-101
[ESP/TCS/ABS]
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4.SOLENOID VALVE LINE CHECK
1. Disconnect connectors for the ESP/TCS/ABS control unit and the ESP actuator.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector B111) and the ESP actuator (vehicle-
side connector E67and E68).
Is inspection result OK?
YES >> GO TO 5.
NO >> Harness disconnection between the ESP/TCS/ABS control unit and the actuator
SFIA0901E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)ESP Actuator
(Vehicle-side connector E67 and E68)Continuity
26 (W/G) 3 (W/G) Yes
5 (G/OR) 1 (G/OR) Yes
6 (PU/W) 7 (PU/W) Yes
53 (P) 5 (P) Yes
55 (R/Y) 15 (R/Y) Yes
3 (Y/G) 14 (Y/G) Yes
4 (GY/R) 17 (GY/R) Yes
25 (LG) 16 (LG) Yes
49 (B/W) 26 (B/W) Yes
50 (R/G) 25 (R/G) Yes
54 (W/L) 28 (W/L) Yes
52 (PU) 27 (PU) Yes

BRC-102
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
5. ACTUATOR SOLENOID INSPECTION
1. Disconnect the ESP actuator connector and ESP relay box vehicle-side connector E57.
2. Check the resistance value at the ESP actuator.
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> Replace the ESP actuator assembly.
Inspection 8 Actuator Motor, Motor Relay and CircuitEFS001AJ
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Are
“PUMP MOTOR” and “ACTUATOR RLY” (NOTE) indicated in the self-diagnosis results?
>>●GO TO 2.
NOTE:
“ACTUATOR RLY” on the CONSULT-II self-diagnosis results indicates the malfunction of the
actuator relay and circuit.
SFIA1083E
ESP Actuator
(Actuator side)ESP Relay box
(Vehicle-side connector E57)Resistance
3
40 (BR/Y: Except for LHD models
and YD ENGINE)6.0 – 11Ω
1 6.0 – 11Ω
7 6.0 – 11Ω
5 6.0 – 11Ω
15 3.0 – 5.0Ω
14 3.0 – 5.0Ω
17 3.0 – 5.0Ω
16 3.0 – 5.0Ω
26 6.0 – 11.0Ω
25 6.0 – 11.0Ω
28 3.0 – 5.0Ω
27 3.0 – 5.0Ω
Self-diagnosis results
CONSULT-II indication item
PUMP MOTOR
ACTUATOR RLY (NOTE)

TROUBLE DIAGNOSIS
BRC-103
[ESP/TCS/ABS]
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BRC
2.SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors for the ESP/TCS/ABS control unit and the actuator. Securely connect them again.
2. Perform the self-diagnosis again.
Are any self-diagnosis items indicated again?
YES >> GO TO 3.
NO >> Repair or replace the poorly connected connector.
3.ACTUATOR MOTOR, MOTOR RELAY POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect relay box connectors.
2. Check the voltage between the vehicle-side connector E55 and body ground.
Is inspection result OK?
YES >> GO TO 4.
NO >>
●Check the fuse 50A.
●Check for continuity between the battery and the relay box terminal No. 10.
4.ACTUATOR MOTOR AND MOTOR RELAY CIRCUIT CHECK
1. Disconnect connectors for the ESP/TCS/ABS control unit and
the relay box.
2. Check for continuity between the ESP/TCS/ABS control unit,
the relay, and the actuator (vehicle-side connector E66).
* Except for LHD models and YD engine.
Is inspection result OK?
YES >> GO TO 5.
NO >> Harness malfunction between the ESP/TCS/
ABS control unit, the relay box and the actuator.
SFIA0917E
Relay box
(Vehicle-side connector E55)Body ground Voltage value
10 (W/R) – Battery voltage (approx. 12V)
ESP/TCS/ABS
control unit
(Vehicle-side
connector B111)ESP relay box
(Vehicle-side
connector E56)ESP actuator
(Vehicle-side
connector E66)Continuity
20 (R/B) 4 (R/B) — Yes
7 (G/W) 8 (G/W) — Yes
— 41 (G/Y) * 21 (G/Y) * Yes
SFIA0903E

BRC-104
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
5. MOTOR RELAY UNIT INSPECTION
Check the motor relay as a unit.
Is inspection result OK?
YES >> Check the ESP/TCS/ABS control unit power supply circuit.
NO >> Replace the motor relay.
Inspection 9 Actuator Relay and CircuitEFS001AK
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Is
“MAIN RELAY” indicated in the self-diagnosis results?
>> GO TO 2.
2. SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect the ESP/TCS/ABS control unit connector. Securely connect them again.
2. Perform the ESP/TCS/ABS control unit self-diagnosis again.
Is the same self-diagnosis item indicated?
YES >> GO TO 3.
NO >> Repair or replace the poorly connected connector.
3. ESP/TCS/ABS CONTROL UNIT GROUND CIRCUIT INSPECTION
1. Disconnect the ESP/TCS/ABS control unit connector.
2. Check the ESP/TCS/ABS control unit ground circuit.
Is inspection result OK?
YES >> GO TO 4.
NO >> Poorly connection on the ESP/TCS/ABS control unit connector or harness disconnection.
Self-diagnosis results
CONSUL-II indication item
MAIN RELAY
SFIA0918E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Body ground Continuity
28 (B) – Yes
29 (B) – Yes

TROUBLE DIAGNOSIS
BRC-105
[ESP/TCS/ABS]
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4.ACTUATOR RELAY POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect relay box connectors.
2. Check the voltage between the vehicle-side connector E55 and
body ground.
Is inspection result OK?
YES >> GO TO 5.
NO >>
●Check the fuse 30A.
●Check for continuity between the battery and the relay box terminal No. 9. If it is not OK,
replace the fuse or harness.
5.ACTUATOR RELAY POWER CIRCUIT CHECK
1. Disconnect connectors for the ESP/TCS/ABS control unit and
the relay box.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector B111) and the relay box (vehicle-side
connector E56).
Is inspection result OK?
YES >> GO TO 6.
NO >> Harness disconnection between the ESP/TCS/ABS control unit and the relay box.
6.ACTUATOR RELAY UNIT INSPECTION
Check the actuator relay as a unit.
Is inspection result OK?
YES >> Check the ESP/TCS/ABS control unit power supply circuit.
NO >> Replace the actuator relay.
SFIA0919E
RELAY BOX
(Vehicle-side connector) E55Body ground Voltage value
9 (BR) – Battery voltage (approx. 12V)
SFIA0920E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)ESP relay box
(Vehicle-side connector E56)Continuity
2 (Y/R) 5 (Y/R) Yes
36 (L/Y) 7 (L/Y) Yes

BRC-106
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Inspection 10 Stop Lamp Switch and Circuit
EFS001AL
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK
Check the self-diagnosis results.
Is
“STOP LAMP SW” indicated in the self-diagnosis results?
>> GO TO 2.
2. STOP LAMP INSPECTION
1. Disconnect connectors for the stop lamp switch and the ESP/TCS/ABS control unit.
2. Securely connect them again.
3. Start the engine.
4. Repeat depressing the brake pedal carefully several times, then perform the self-diagnosis again.
Is the same self-diagnosis item indicated?
YES >> GO TO 3.
NO >> Repair or replace the poorly connected connector.
3. STOP LAMP SWITCH CIRCUIT CHECK
1. Disconnect connectors for the stop lamp switch and the ESP/
TCS/ABS control unit.
2. Check for continuity between the stop lamp switch (vehicle-side
connector M12) and the ESP/TCS/ABS control unit (vehicle-
side connector B111).
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> Harness disconnection between the ESP/TCS/ABS control unit and the stop lamp switch.
Inspection 11 ESP/TCS/ABS Control Unit Power Supply CircuitEFS001AM
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Is
“BATTERY VOLTTAGE [ABNORMAL]” indicated in the self-diagnosis results?
>> GO TO 2.
Self-diagnosis results
CONSUL-II indication item
STOP LAMP SW
SFIA0921E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)STOP LAMP SW
(Vehicle-side connector M12)Continuity
48 (P) 2 (P) Yes
Self-diagnosis results
CONSUL-II indication item
BATTERY VOLTTAGE [ABNORMAL]