NISSAN X-TRAIL 2003 Electronic Repair Manual

TROUBLE DIAGNOSIS
BRC-93
[ESP/TCS/ABS]
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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
²PRESS SEN CIRCUIT²indicated in the self-diagnosis results?
>> GO TO 2.
2.SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors of the pressure sensor and the ESP/TCS/ABS control unit, and connect them
again correctly.
2. Perform the ESP/TCS/ABS control unit self-diagnosis again.
Is inspection result OK?
OK >> Repair or replace the poorly connected connector, then perform the self-diagnosis again.
NG >> GO TO 3.
3.PRESSURE SENSOR CIRCUIT INSPECTION
1. Disconnect connectors of the pressure sensor and the ESP/
TCS/ABS control unit.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector) and the pressure sensor (vehicle-side
connector).
Is inspection result OK?
OK >> GO TO 4.
NG >> Repair or replace the disconnected harness.Self-diagnosis results
CONSULT-II indication item
PRESS SEN CIRCUIT
SFIA0373E
ESP/TCS/ABS control unit
(Vehicle-side connector)Pressure sensor
(ESP/TCS/ABS actuator
vehicle-side connector)Continuity
69 30 Yes
68 31 Yes
67 32 Yes

BRC-94
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
4.PRESSURE SENSOR INSPECTION
Check the “PRESS SENSOR” value in²DATA MONITOR².
Is inspection result OK?
OK >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NG >> Pressure sensor malfunction. Replace the ESP/TCS/ABS actuator (with the pressure sensor).
Inspection 5 Steering Angle Sensor and the 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 inspection 15.
Refer toBRC-108, "
Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and Steering
Angle Sensor".
Is
²ST ANG SEN CIRCUIT²indicated in the self-diagnosis results.
>> GO TO 2.
2.SELF-DIAGNOSIS RESULT CHECK 2
1. Repair or replace the poorly connected connector
–Check the 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?
OK >> Inspection END
NG >> GO TO 3.Condition PRESS SENSOR (Data monitor)
Brake pedal depressed Positive value
Brake pedal released Approx. 0 bar
Self-diagnosis results
CONSULT-II indication item
ST ANG SEN CIRCUIT

TROUBLE DIAGNOSIS
BRC-95
[ESP/TCS/ABS]
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BRC
3.STEERING ANGLE SENSOR CURCUIT CHECK
1. Disconnect the ESP/TCS/ABS control unit connector and the
steering angle sensor connector.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector) and the steering angle sensor (vehicle-
side connector).
Is inspection result OK?
OK >> GO TO 4.
NG >> Repair or replace the disconnected harness.
4.DATA MONITOR CHECK
Perform the²STR ANGLE SIG²value in²DATA MONITOR²and check that it is in normal condition.
Is inspection result OK?
OK >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NG >> Replace the spiral cable (with the steering angle sensor) and adjust the neutral position of steer-
ing angle sensor.BRC-54, "
Adjustment of Neutral Position of Steering Angle Sensor".
Inspection 6 Yaw Rate Sensor/ Side G sensor and the Circuit between Yaw Rate
Sensor/ 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
²YAW R AT E S E N S O R²and²SIDE G-SEN CIRCUIT²indicated in the self-diagnosis results.
>> GO TO 2.
SFIA0374E
ESP/TCS/ABS control unit
(Vehicle-side connector)Steering angle sensor
(Vehicle-side connector)Continuity
61 4 Yes
63 5 Yes
Steering condition STR ANGLE SIG (Data monitor)
Straight-ahead – 5deg to + 5deg
Turn the wheel to the right by 90°. Approx. + 90deg
Turn the wheel to the left by 90°. Approx. - 90deg
Self-diagnosis results
CONSULT-II indication item
YAW RATE SENSOR
SIDE G-SEN CIRCUIT

BRC-96
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
2.SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors of the yaw rate / side G sensor and the
ESP/TCS/ABS control unit.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector) and the yaw rate / side G sensor (vehi-
cle-side connector).
Is inspection result OK?
OK >> GO TO 3.
NG >> Repair or replace the disconnected harness.
3.YAW RATE SENSOR / SIDE G SENSOR CIRCUIT CHECK
Check that the “YAW RATE SEN” and the “SIDE G-SENSOR” are in normal operation in²DATA MONITOR².
Is inspection result OK?
OK >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NG >> The yaw rate / side G sensor malfunction. After replacing the sensor, perform the self-diagnosis of
the ESP/TCS/ABS control unit again.
SFIA0375E
ESP/TCS/ABS control unit
(Vehicle-side connector)Yaw rate/side G-sensor
(Vehicle-side connector)Continuity
78 1 Yes
77 2 Yes
34 3 Yes
79 4 Yes
18 5 Yes
80 6 Yes
Veh icle stat u sYAW RATE SEN
(DATA MONITOR)SIDE G-SENSOR
(DATA MONITOR)
While the vehicle is
stopped–4 to +4deg/s
–1.1 to +1.1m/s
2
Right turn Negative value Negative value
Left turn Positive value Positive value

TROUBLE DIAGNOSIS
BRC-97
[ESP/TCS/ABS]
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BRC
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.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
USVLINE[FL-RR]
USVLINE[FR-RL]
HSVLINE[FL-RR]
HSVLINE[FR-RL]

BRC-98
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
3.SOLENOID VALVE INPUT SIGNAL CHECK.
1. Disconnect the ESP/TCS/ABS control unit connector.
2. Check the resistance value between the ESP/TCS/ABS control unit (vehicle-side connector) and body
ground.
Is inspection result OK?
OK >> Check the ESP/TCS/ABS control unit power supply circuit.
NG >> GO TO 4.
SFIA0376E
VDC/TCS/ABS control unit
(Vehicle-side connector)Body ground Resistance
26 – 6.0 – 11W
5–6.0–11W
6–6.0–11W
53 – 6.0 – 11W
55 – 3.0 – 5.0W
3 – 3.0 – 5.0W
4 – 3.0 – 5.0W
25 – 3.0 – 5.0W
49 – 6.0 – 11.0W
50 – 6.0 – 11.0W
54 – 3.0 – 5.0W
52 – 3.0 – 5.0W

TROUBLE DIAGNOSIS
BRC-99
[ESP/TCS/ABS]
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BRC
4.SOLENOID VALVE LINE CHECK
1. Disconnect connectors for the ESP/TCS/ABS control unit and
the ESP/TCS/ABS actuator.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector) and the ESP/TCS/ABS actuator (vehi-
cle-side connector).
Is inspection result OK?
OK >> GO TO 5.
NG >> Harness disconnection between the ESP/TCS/ABS control unit and the actuator
SFIA0377E
ESP/TCS/ABS control unit
(Vehicle-side connector)ESP/TCS/ABS Actuator
(Vehicle-side connector)Continuity
26 3 Yes
51Yes
67Yes
53 5 Yes
55 15 Yes
314Yes
417Yes
25 16 Yes
49 26 Yes
50 25 Yes
54 28 Yes
52 27 Yes

BRC-100
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
5.ACTUATOR SOLENOID INSPECTION
1. Disconnect the ESP/TCS/ABS actuator connector.
2. Check the resistance value at the ESP/TCS/ABS actuator.
Is inspection result OK?
OK >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NG >> Replace the ESP/TCS/ABS actuator assembly.
Inspection 8 Actuator Motor, Motor Relay and CircuitEFS001AJ
Inspection procedure
1.SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Are
²PUMP MOTOR²and“ACTUATOR RLY”(NOTE) indicated in the self-diagnosis results?
>>lGO TO 2.
NOTE:
“ACTUATOR RLY” on the CONSULT-II self-diagnosis results indicates the malfunction of the
actuator relay and circuit.
SFIA0378E
ESP/TCS/ABS Actuator
(actuator side)ESP/TCS/ABS Actuator
(actuator side)Resistance
3 19 [RHD] 40 [LHD] 6.0 – 11W
1 19 [RHD] 40 [LHD] 6.0 – 11W
7 19 [RHD] 40 [LHD] 6.0 – 11W
5 19 [RHD] 40 [LHD] 6.0 – 11W
15 19[RHD] 40[LHD] 3.0–5.0W
14 19[RHD] 40[LHD] 3.0–5.0W
17 19[RHD] 40[LHD] 3.0–5.0W
16 19[RHD] 40[LHD] 3.0–5.0W
26 19 [RHD] 40 [LHD] 6.0 – 11.0W
25 19 [RHD] 40 [LHD] 6.0 – 11.0W
28 19[RHD] 40[LHD] 3.0–5.0W
27 19[RHD] 40[LHD] 3.0–5.0W
Self-diagnosis results
CONSULT-II indication item
PUMP MOTOR
ACTUATOR RLY (NOTE)

TROUBLE DIAGNOSIS
BRC-101
[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 and body ground.
Is inspection result OK?
OK >> GO TO 4.
NG >>
lCheck the fuse 50A.
lCheck 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).
Is inspection result OK?
YES >> GO TO 5.
NO >> Harness malfunction between the ESP/TCS/
ABS control unit, the relay box and the actuator.
SFIA0379E
Relay box
(Vehicle-side connector)Body ground Voltage value
10 – Battery voltage (approx. 12V)
ESP/TCS/ABS
control unit
(Vehicle-side
connector)Relay box
(Vehicle-side
connector)Actuator
(Vehicle-side
connector)Continuity
20 4 — Yes
78—Yes
— 41 [RHD] 21 [RHD] Yes
SFIA0380E

BRC-102
[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
²MAIN RELAY²indicated 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
Check the ESP/TCS/ABS control unit ground circuit.
Is inspection result OK?
OK >> GO TO 4.
NG >> Poorly connection on the ESP/TCS/ABS control unit connector or harness disconnection.Self-diagnosis results
CONSULT-II indication item
MAIN RELAY
SFIA0381E
ESP/TCS/ABS control unit
(Vehicle-side connector)Body ground Continuity
28 – Yes
29 – Yes