Infiniti EX35. Manual — part 336
C1142 PRESS SENSOR
BRC-59
< COMPONENT 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:0000000003430144
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to
BRC-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
>> 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.
−
40 to 300 bar
BRC-60
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C1143 STEERING ANGLE SENSOR
C1143 STEERING ANGLE SENSOR
Description
INFOID:0000000003132936
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:0000000003132937
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
1.
Turn the ignition switch ON.
2.
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1143” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003132938
1.
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 2.
NO
>> Repair or replace damaged parts.
2.
CHECK STEERING ANGLE SENSOR HARNESS
1.
Turn ignition switch ON.
CAUTION:
Never start the engine.
2.
Check the voltage between steering angle sensor harness connector and ground.
3.
Turn the ignition switch OFF.
4.
Check the continuity between steering angle sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
DTC
Display item
Malfunction detected condition
Possible cause
C1143
ST ANG SEN CIRCUIT
Steering angle sensor is malfunctioning.
• Harness or connector
• Steering angle sensor
• ABS actuator and electric unit
(control unit)
Steering angle sensor
—
Voltage
Connector
Terminal
M37
8
Ground
Battery voltage
Steering angle sensor
—
Continuity
Connector
Terminal
M37
7
Ground
Existed
C1143 STEERING ANGLE SENSOR
BRC-61
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
3.
CHECK DATA MONITOR
1.
Connect steering angle sensor connector and ABS actuator and electric unit (control unit) connector.
2.
Check steering angle sensor signal. Refer to
BRC-61, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit).
NO
>> Replace steering angle sensor and adjust neutral position of steering angle sensor.
Component Inspection
INFOID:0000000003132939
1.
CHECK DATA MONITOR
Select “STR ANGLE SIG” in “DATA MONITOR” and check steering angle sensor signal.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to diagnosis procedure. Refer to
.
Special Repair Requirement
INFOID:0000000003132940
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the steering
angle sensor or the ABS actuator and electric unit (control unit). Refer to
ING ANGLE SENSOR NEUTRAL POSITION : Description"
>> END
Steering condition
STR ANGLE SIG (DATA MONITOR)
Driving straight
±
2.5
°
Turn 90
°
to right
Approx. +90
°
Turn 90
°
to left
Approx.
−
90
°
BRC-62
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
C1144 STEERING ANGLE SENSOR
C1144 STEERING ANGLE SENSOR
DTC Logic
INFOID:0000000003441412
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
1.
Turn the ignition switch ON.
2.
Select “ST ANG SEN ADJUSTMENT” in “WORK SUPPORT”, and perform adjust the neutral position of
steering angle sensor.
3.
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “C1144” detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003441413
1.
CHECK STEERING ANGLE SENSOR
Check steering angle sensor. Refer to
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit).
NO
>> Repair or replace damaged parts.
Special Repair Requirement
INFOID:0000000003441415
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the steering
angle sensor or the ABS actuator and electric unit (control unit). Refer to
ING ANGLE SENSOR NEUTRAL POSITION : Description"
>> END
DTC
Display item
Malfunction detected condition
Possible cause
C1144
ST ANG SEN SIGNAL
Neutral position of steering angle sensor is not finished.
• Harness or connector
• Steering angle sensor
• ABS actuator and electric unit
(control unit)
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