NISSAN X-TRAIL 2001 Service Repair Manual

TROUBLE DIAGNOSIS
BRC-107
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
2.SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect the ESP/TCS/ABS control unit connector. Securely connect them again.
2. Perform the self-diagnosis.
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 POWER SUPPLY CIRCUIT INSPECTION 1
1. Disconnect the ESP/TCS/ABS control unit connector.
2. Turn the ignition switch ON (engine not running), and check the
voltage between the ESP/TCS/ABS control unit (vehicle-side
connector B111) and body ground.
Is inspection result OK?
YES >> GO TO 4.
NO >> GO TO 5.
4.ESP/TCS/ABS CONTROL UNIT GROUND CIRCUIT INSPECTION 1
Check the ESP/TCS/ABS control unit (vehicle-side connector B111)
ground circuit.
Is inspection result OK?
YES >> Perform the ESP/TCS/ABS control unit self-diagnosis again.
NO >> Harness disconnection or improper installation of the ESP/TCS/ABS control unit.
SFIA0922E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Body ground Voltage value
1 (G/R) – Battery voltage (approx. 12V)
SFIA0923E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Body ground Continuity
28 (B) – Yes
29 (B) – Yes

BRC-108
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
5. ESP/TCS/ABS CONTROL UNIT POWER SUPPLY CIRCUIT INSPECTION 2
1. Check the fuse 10A.
2. Check for continuity between the battery positive terminal and
the ESP/TCS/ABS control unit (vehicle-side connector B111).
Is inspection result OK?
YES >> Check the battery for a loose terminal and low voltage or the alternator for abnormality.
NO >>
●Replace the fuse 10A.
●Harness disconnection
Inspection 12 When “EMERGENCY BRAKE” is indicated in the Self-Diagnosis
Results
EFS001AO
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK
Check the self-diagnosis results.
When any items other than “EMERGENCY BRAKE” is displayed in the self-diagnosis results, follow the
instructions below.
CAUTION:
“EMERGENCY BRAKE” is indicated when the control unit itself is detected internal error. If this dis-
play item was indicated, replace the control unit.
Is
“EMERGENCY BRAKE” is indicated in the self-diagnosis results?
>> Replace the ESP/TCS/ABS control unit, and perform the self-diagnosis again.
Inspection 13 When “ST ANG SEN SIGNAL” is Indicated in the Self-Diagnosis
Results
EFS001AP
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
When any items other than
“ST ANGLE SEN SIGNAL” is displayed in the self-diagnosis results:
YES >> Check and repair the applicable items. Perform the self-diagnosis again.
NO >> Perform the steering wheel angle sensor neutral position adjustment. GO TO 2.
SFIA0924E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Battery terminal Continuity
1 (G/R) positive Yes
Self-diagnosis results
CONSUL-II indication item
EMERGENCY BRAKE
Self-diagnosis results
CONSUL-II indication item
ST ANGLE SEN SIGNAL

TROUBLE DIAGNOSIS
BRC-109
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
2.SELF-DIAGNOSIS RESULT CHECK 2
Turn the ignition switch OFF, and ON to erase the self-diagnosis results. And perform the ESP/TCS/ABS con-
trol unit self-diagnosis again.
Is the same self-diagnosis item indicated again?
YES >> After replacing the spiral cable (with the steering wheel angle sensor), perform the neutral position
adjustment. Then conduct the self-diagnosis again.
NO >> Inspection End
Inspection 14 Brake Fluid Level of Reservoir Tank, Communication Circuit
between ESP/TCS/ABS Control Unit and Brake Fluid Level Warning Switch
EFS001AQ
Inspection procedure
1.SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Does the brake warning light turn on?
YES >> Check the pad for wear. Check the brake fluid for leakage.
NO >> GO TO 2.
2.SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors for the brake fluid level warning switch and the ESP/TCS/ABS control unit.
2. Securely connect connectors. Perform the ESP/TCS/ABS control unit self-diagnosis again.
Is the same self-diagnosis item indicated again?
YES >> GO TO 3.
NO >> Poor connection of connector. Repair or replace the poorly connected connector.
3.CIRCUIT CHECK BETWEEN BRAKE FLUID LEVEL WARNING SWITCH AND ESP/TCS/ABS CON-
TROL UNIT
1. Disconnect connectors for the brake fluid level warning switch
and the ESP/TCS/ABS control unit.
2. Check for continuity between the brake fluid level warning switch (vehicle-side connector E19) 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 >> Repair or replace the disconnected harness.
Self-diagnosis results
CONSUL-II indication item
BR FLUID LEVER LOW
SFIA0925E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)Brake fluid level warning switch
(Vehicle-side connector E19)Continuity
40 (Y/B) 1 (Y/B) Yes

BRC-110
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and
Steering Wheel Angle Sensor
EFS001C6
Inspection procedure
1. SELF-DIAGNOSIS RESULT CHECK 1
Check the self-diagnosis results.
Are any items other than above indicated in self-diagnosis results?
YES >> Repair or replace affected items.
NO >> GO TO 2.
2. CHECK HARNESS AND CONNECTORS BETWEEN ESP/TCS/ABS CONTROL UNIT AND STEERING
WHEEL ANGLE SENSOR.
1. Turn the ignition switch OFF, and disconnect the battery nega-
tive terminal.
2. Disconnect the ESP/TCS/ABS control unit connector and the
steering wheel angle sensor connector.
3. Check the harness between the ESP/TCS/ABS control unit
(vehicle-side connector B111) and the steering wheel angle sen-
sor (vehicle-side connector M81) for open and short circuit.
4. Check connectors for the control unit and the sensor.
–Check the connector housing for disconnected, loose, bent, and
collapsed terminals.
Is inspection result OK?
YES >> GO TO 3.
NO >> Repair disconnected harness or poorly connected connectors. GO TO 3.
3. SELF-DIAGNOSIS RESULT CHECK 2
1. Connect connectors to the control unit and the sensor.
2. Connect the battery negative terminal, and turn the ignition switch ON.
3. After erasing the self-diagnosis result, start the engine to perform the self-diagnosis again.
Is only
“ST ANGLE SEN COM CIR” indicated in the self-diagnosis results?
YES >> Replace the spiral cable (with the steering wheel angle sensor) and adjust the neutral position of
the steering wheel angle sensor. Refer to BRC-57, "
ON-VEHICLE SERVICE" .
NO >> GO TO 4.
Self-diagnosis results
CONSUL-II indication item
CAN COMM CIRCUIT
ST ANG SEN COM CIR
SFIA0904E
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

TROUBLE DIAGNOSIS
BRC-111
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
4.CAN COMMUNICATION SYSTEM CHECK
Check “CAN DIAG SUPPORT MNTR” of the data monitor items.
Is inspection result OK?
>> After printing the monitor items, go to CAN SYSTEM. Refer to LAN-12, "CAN SYSTEM (FOR M/
T MODELS)" .
Component CheckEFS001AR
ESP OFF SWITCH
●Disconnect the ESP OFF switch connector. Check for continuity
between the terminal No. 1 and No. 2.
ESP RELAY BOX
Disconnect the relay box connectors. Check for continuity, resis-
tance value, and insulation between any pair of terminals in the relay
box.Normal Abnormal (example)
CAN COMM: OK CAN COMM: OK
CAN CIRC 1: OK CAN CIRC 1: UNKWN
CAN CIRC 2: OK CAN CIRC 2: UNKWN
CAN CIRC 5: OK CAN CIRC 5: UNKWN
CAN CIRC 7: OK CAN CIRC 7: UNKWN
1 - 2 : Pressing the switch will make a continu-
ity, and releasing it will stop the continuity.
SFIA0905E
SFIA0906E

BRC-112
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Continuity and resistance
ESP ACTUATOR
Take each connector off from the actuator. Then check electric circulation and resistance in between termi-
nals.
CAUTION:
Confirm that the earth of actuator motor is completely removed.
SFIA0907E
SFIA0908E

TROUBLE DIAGNOSIS
BRC-113
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Continuity and resistance
Check the resistance
SFIA0909E
Standard value (Ω)
Solenoid valves
Outlet ~ Outlet : 6.0 - 10.0
Outlet ~ Inlet : 9.0 - 16.0
Inlet ~ Inlet : 12.0 - 22.0
ESP switch-over solenoid valve
Primary-side 1 - Secondary-side 1 : 12.0 - 22.0
Primary-side 2 - Secondary-side 2 : 6.0 - 10.0
Primary-side 1 - Primary-side 2, Secondary-side 2 : 9.0 - 16.0
Secondary-side 1 - Primary-side 2, Secondary-side 2 : 9.0 - 16.0

BRC-114
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
Actuator operation check
1. Connect 9 and 10 terminals of actuator to 40 and 41 terminals of
relay box.
2. Measure the motor voltage (No.4 terminal to body earth) with
oscilloscope. Then check the motor reverse voltage occasioned
time.
The motor reverse voltage occasioned time is more than 0.1
sec.
CAUTION:
●Perform checking of motor relay unit. Then confirm that
relay functions.
●Driving actuator motor is with in 4 sec. to prevent heating
up.
●Standard condition of the motor reverse voltage occa-
sioned time is: Battery voltage is 12V. Temperature 20°.
when the battery voltage or temperature is lower than the
standard, the motor reverse voltage occasioned time
becomes slightly shorter.
Symptom 1: ABS Works Frequently.EFS001AS
Inspection procedure
1. INSPECTION START
Check the wheel sensor system.
●Sensor mounting inspection
●Sensor pick-up inspection for iron chips
●Sensor rotor inspection (e.g. Number of teeth, damaged teeth)
●Sensor connector engagement inspection
Is inspection result OK?
YES >> GO TO 2.
NO >> Refer to wheel sensor and rotor lines.
2. LOOSENESS INSPECTION
Check the front axle for looseness.
Is inspection result OK?
YES >>BRC-114, "Symptom 2: Unexpected Pedal Action"
NO >> Axle inspection and repair
Symptom 2: Unexpected Pedal ActionEFS001AT
Inspection procedure
1. BRAKE PEDAL STROKE INSPECTION
Check the brake pedal stroke.
Is stroke excessively long?
YES >> Check the bleeding and brake system.
NO >> GO TO 2.
SFIA0910E

TROUBLE DIAGNOSIS
BRC-115
[ESP/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
2.PEDAL FORCE INSPECTION
Check that the brake is effective with the pedal depressed.
Is the pedal heavy, but effective?
YES >> Normal
NO >> GO TO 3.
3.CONNECTOR AND PERFORMANCE INSPECTION
Disconnect the actuator relay unit connector to deactivate the ABS function. Check that the brake is effective.
Is the brake effective?
YES >> GO TO 4.
NO >> Brake line inspection
4.ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
YES >> Perform the self-diagnosis.
NO >> GO TO 5.
5.WHEEL SENSOR INSPECTION
Check the wheel sensor system.
●Sensor mounting inspection
●Sensor pick-up inspection for iron chips
●Sensor rotor inspection (e.g. Number of teeth, damaged teeth)
●Sensor connector engagement inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel sensor and rotor lines repair
Symptom 3: Longer Stopping DistanceEFS001AU
Inspection procedure
1.INSPECTION START
Check that the stopping distance when braking becomes longer only on a snowy or gravel road.
Does the stopping distance when braking become longer only on a snowy or gravel road?
YES >> It may be longer than that of vehicle without ABS.
NO >> GO TO 2.
2.PERFORMANCE CHECK
Disconnect the actuator relay box to deactivate the ABS function.
Is the stopping distance still longer?
YES >>●Brake line air bleeding
●Brake line inspection
NO >> GO TO 3.
3.ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
YES >> Perform the self-diagnosis.
NO >> GO TO 4.

BRC-116
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS
4. WHEEL SENSOR INSPECTION
Check the wheel sensor system.
●Sensor mounting inspection
●Sensor pick-up inspection for iron chips
●Sensor rotor inspection (e.g. Number of teeth, damaged teeth)
●Sensor connector engagement inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel sensor and rotor lines repair
Symptom 4: ABS Does Not Work.EFS001AV
Inspection procedure
1. ABS WARNING LAMP INDICATOR INSPECTION
Check that the ABS warning lamp illuminates.
Does the ABS warning lamp illuminate?
YES >> Perform the self-diagnosis.
NO >> GO TO 2.
2. WHEEL SENSOR INSPECTION
Check the wheel sensor system.
●Sensor mounting inspection
●Sensor pick-up inspection for iron chips
●Sensor rotor inspection (e.g. Number of teeth, damaged teeth)
●Sensor connector engagement inspection
Is inspection result OK?
YES >> Normal
NO >> Wheel sensor and rotor lines repair
Symptom 5: Pedal Vibration and NoiseEFS001AW
Inspection procedure
1. SYMPTOM CHECK
Check the brake system for pedal vibration or noise at the engine start.
Is inspection result OK?
YES >> Perform the self-diagnosis.
NO >> GO TO 2.
2. SYMPTOM CHECK 2
Check the brake system for pedal vibration or noise when the pedal depressed lightly (just put a foot on).
CAUTION:
Under the following driving conditions, the wheel speed will fluctuates, resulting in ABS activation.
●When shifting gears
●High speed cornering
●When a gust of wind
Is inspection result OK?
YES >> GO TO 3.
NO >> Normal