Nissan Titan. Instruction — part 29
C1142 PRESS SENSOR
BRC-57
< 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
>> GO TO 3
NO
>> Repair or replace harness or connector.
3.
FRONT PRESSURE SENSOR INSPECTION
1. Reconnect the front pressure sensor and ABS actuator and electric unit (control unit) connectors.
2. Perform the “PRESS SENSOR” component inspection. Refer to
BRC-58, "Component Inspection (Front
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace the front pressure sensor.
Diagnosis Procedure (Rear Pressure Sensor)
INFOID:0000000009883661
Regarding Wiring Diagram information, refer to
1.
CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the rear pressure sensor and ABS actuator and electric unit (control unit) connectors.
3. Inspect the terminals for deformation, disconnection, looseness, or damage.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair connector.
2.
REAR PRESSURE SENSOR CIRCUIT INSPECTION
1. Measure the continuity between the ABS actuator and electric
unit (control unit) connector E125 (A) and rear pressure sensor
connector E32 (B).
2. Measure the continuity between the ABS actuator and electric unit (control unit) connector E125 (A) and
body ground.
ABS actuator and electric unit (control
unit)
—
Continuity
Connector
Terminal
A: E125
18
Ground
No
19
20
ABS actuator and electric unit
(control unit)
Rear pressure sensor
Continuity
Connector
Terminal
Connector
Terminal
A: E125
21
B: E32
1
Yes
22
3
23
2
ABS actuator and electric unit (control
unit)
—
Continuity
Connector
Terminal
A: E125
21
Ground
No
22
23
AWFIA0022ZZ
BRC-58
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1142 PRESS SENSOR
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness or connector.
3.
REAR PRESSURE SENSOR INSPECTION
1. Reconnect the rear pressure sensor and ABS actuator and electric unit (control unit) connectors.
2. Perform the “PRESS SEN2” component inspection. Refer to
BRC-58, "Component Inspection (Rear Pres-
.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace the rear pressure sensor.
Component Inspection (Front Pressure Sensor)
INFOID:0000000009883662
1.
CHECK DATA MONITOR
On “DATA MONITOR”, select “PRESS SENSOR” and check the brake fluid pressure.
Is the inspection result normal?
YES
>> Inspection End
NO
>> Go to diagnosis procedure. Refer to
BRC-56, "Diagnosis Procedure (Front Pressure Sensor)"
Component Inspection (Rear Pressure Sensor)
INFOID:0000000009883663
1.
CHECK DATA MONITOR
On “DATA MONITOR”, select “PRESS SEN2” and check the brake fluid pressure.
Is the inspection result normal?
YES
>> Inspection End
NO
>> Go to diagnosis procedure. Refer to
BRC-57, "Diagnosis Procedure (Rear Pressure Sensor)"
Special Repair Requirement
INFOID:0000000009883664
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to
BRC-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
.
>> GO TO 2
2.
CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
BRC-9, "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.
Positive value
Condition
PRESS SEN2
(DATA MONITOR)
With ignition switch turned ON and brake pedal released.
Approx. 0 bar
With ignition switch turned ON and brake pedal depressed.
Positive value
C1143, C1144 STEERING ANGLE SENSOR
BRC-59
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C1143, C1144 STEERING ANGLE SENSOR
Description
INFOID:0000000009883665
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:0000000009883666
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End
Diagnosis Procedure
INFOID:0000000009883667
Regarding Wiring Diagram information, refer to
1.
CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) and steering angle sensor connectors.
3. Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair
or replace terminals.
4. Reconnect connectors and then perform the self-diagnosis. Refer to
.
Is any item indicated on the self-diagnosis display?
YES
>> GO TO 2
NO
>> Poor connection of connector terminals. Repair or replace connector.
2.
CHECK STEERING ANGLE SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect steering angle sensor connector.
DTC
Display item
Malfunction detected condition
Possible cause
C1143
ST ANG SEN CIRCUIT
Neutral position of steering angle sensor is dislocated, or
the steering angle sensor is malfunctioning.
• Harness or connector
• Steering angle sensor
• ABS actuator and electric unit
(control unit)
C1144
ST ANG SEN SIGNAL
Neutral position of steering angle sensor is not finished.
Self-diagnosis results
ST ANG SEN CIRCUIT
ST ANG SEN SIGNAL
BRC-60
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1143, C1144 STEERING ANGLE SENSOR
3. Check continuity between steering angle sensor connector M17
terminal 2 and ground.
4. Turn ignition switch ON.
5. Check voltage between steering angle sensor connector M17
terminal 3 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace malfunctioning components.
3.
CHECK DATA MONITOR
1. Connect the steering angle sensor and ABS actuator and electric unit (control unit) connectors.
2. Perform the steering angle sensor component inspection. Refer to
BRC-60, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-116, "Removal and Installa-
.
NO
>> Replace steering angle sensor and adjust neutral position of steering angle sensor. Refer to
118, "Removal and Installation"
Component Inspection
INFOID:0000000009883668
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
>> Go to diagnosis procedure. Refer to
Special Repair Requirement
INFOID:0000000009883669
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to
BRC-8, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
.
>> GO TO 2
Steering angle sensor
—
Continuity
Connector
Terminal
M17
2
Ground
Yes
WFIA0399E
Steering angle sensor
—
Voltage
Connector
Terminal
M17
3
Ground
Battery voltage
AWFIA0023ZZ
Steering condition
STR ANGLE SIG (DATA MONITOR)
Driving straight
±2.5 °
Turn 90
° to right
Approx. +90
°
Turn 90
° to left
Approx.
−90 °
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