Nissan Murano Z51. Manual — part 309
C1140 ACTUATOR RELAY SYSTEM
BRC-59
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
Component Inspection
INFOID:0000000005517326
1.
CHECK ACTIVE TEST
1.
Select “ABS”, “ACTIVE TEST” and “ABS MOTOR” in order with CONSULT-III.
2.
Select “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table
below.
NOTE:
A brief moment of On/Off condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is a
operation for checking.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to diagnosis procedure. Refer to
.
Special Repair Requirement
INFOID:0000000005532219
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION AND CALIBRATION OF DECEL G
SENSOR
After removing/replacing an ABS actuator and electric unit (control unit), be sure to perform the following pro-
cedure.
• Adjustment of steering angle sensor neutral position: Refer to
BRC-9, "ADJUSTMENT OF STEERING
ANGLE SENSOR NEUTRAL POSITION : Description"
.
• Calibration of decel G sensor: Refer to
BRC-10, "CALIBRATION OF DECEL G SENSOR : Description"
.
>> END
Test item
Display item
Display
On
Off
ABS MOTOR
MOTOR RELAY
On
Off
ACTUATOR RLY
On
On
BRC-60
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1142 PRESS SENSOR
C1142 PRESS SENSOR
Description
INFOID:0000000005517328
The pressure sensor converts the brake fluid pressure to an electric signal and transmits it to the ABS actuator
and electric unit (control unit). [The pressure sensor is integrated in the ABS actuator and electric unit (control
unit).]
DTC Logic
INFOID:0000000005517329
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
1.
Turn the ignition switch ON.
2.
Perform self-diagnosis for “ABS” with CONSULT-III.
Is DTC “C1142” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005517330
1.
CHECK STOP LAMP SWITCH
Check stop lamp switch system. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK DATA MONITOR
Check pressure sensor signal. Refer to
BRC-60, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>>
Check brake pedal, brake booster and master cylinder for mount play, looseness, brake system
fluid leakage, etc.
• Brake fluid leakage: Refer to
.
• Brake pedal: Refer to
BR-21, "Inspection and Adjustment"
.
• Master cylinder: Refer to
.
• Brake booster: Refer to
BR-31, "Inspection and Adjustment"
.
3.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
Perform self-diagnosis for “ABS” with CONSULT-III.
Is any item indicated on the self-diagnosis display?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
.
NO
>> Repair or replace error-detected parts.
Component Inspection
INFOID:0000000005517331
1.
CHECK DATA MONITOR
Select “ABS”, “DATA MONITOR” and “PRESS SENSOR” in order with CONSULT-III, and check the brake fluid
pressure.
DTC
Display item
Malfunction detected condition
Possible cause
C1142
PRESS SEN CIRCUIT
Pressure sensor signal line is open or shorted, or pres-
sure sensor is malfunctioning.
• Harness or connector
• Stop lamp switch
• ABS actuator and electric unit
(control unit)
C1142 PRESS SENSOR
BRC-61
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to diagnosis procedure. Refer to
.
Special Repair Requirement
INFOID:0000000005532220
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION AND CALIBRATION OF DECEL G
SENSOR
After removing/replacing an ABS actuator and electric unit (control unit), be sure to perform the following pro-
cedure.
• Adjustment of steering angle sensor neutral position: Refer to
BRC-9, "ADJUSTMENT OF STEERING
ANGLE SENSOR NEUTRAL POSITION : Description"
.
• Calibration of decel G sensor: Refer to
BRC-10, "CALIBRATION OF DECEL G SENSOR : Description"
.
>> END
Condition
PRESS SENSOR
(DATA MONITOR)
With ignition switch turned ON and brake pedal released.
Approx. 0 bar
With ignition switch turned ON and brake pedal depressed.
0 to 170 bar
BRC-62
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1143 STEERING ANGLE SENSOR
C1143 STEERING ANGLE SENSOR
Description
INFOID:0000000005517333
The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel,
and transmits the data to the ABS actuator and electric unit (control unit) via CAN communication.
DTC Logic
INFOID:0000000005517334
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
1.
Turn the ignition switch ON.
2.
Perform self-diagnosis for “ABS” with CONSULT-III.
Is DTC “C1143” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005517335
1.
CHECK WHEEL ALIGNMENT
Check wheel alignment. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Adjust wheel alignment. Refer to
(rear).
2.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect ABS actuator and electric unit (control unit) connector.
3.
Disconnect steering angle sensor connector.
4.
Check terminal for deformation, disconnection, looseness, etc.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace or repair error-detected parts.
3.
CHECK STEERING ANGLE SENSOR HARNESS
1.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
2.
Check the voltage between steering angle sensor harness connector and ground.
3.
Turn ignition switch OFF.
4.
Check the continuity between steering angle sensor harness connector and ground.
DTC
Display item
Malfunction detected condition
Possible cause
C1143
ST ANG SEN CIRCUIT
Neutral position of steering angle sensor is dislocated,
steering angle sensor is malfunctioning, or wheel align-
ment is outside specified range.
• Harness or connector
• Steering angle sensor
• ABS actuator and electric unit
(control unit)
• Wheel alignment
Steering angle sensor
—
Voltage
Connector
Terminal
M30
4
Ground
Battery voltage
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