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C1142
C1142 PRESS SENSOR
Description
The front and rear pressure sensors convert the brake fluid pressure to an electric signal and transmit it to the
ABS actuator and electric unit (control unit).
DTC Logic
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. See: C1142.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
FRONT PRESSURE SENSOR
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the front pressure sensor connector and ABS actuator and electric unit (control unit) connector and inspect the terminals for
deformation, disconnection, looseness, or damage.
Is the inspection result normal?
YES - GO TO 2
NO - Repair connector.
2.FRONT PRESSURE SENSOR CIRCUIT INSPECTION
1. Measure the continuity between the ABS actuator and electric unit (control unit) connector E125 (A) and front pressure sensor connector E31
(B).
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) C CODE Page 51
2. Measure the continuity between the ABS actuator and electric unit (control unit) connector E125 (A) and body ground.
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 PRESS SENSOR component inspection. See: C1142.
Is the inspection result normal?
YES - Inspection End.
NO - Replace the front pressure sensor.
REAR PRESSURE SENSOR
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the rear pressure sensor connector and ABS actuator and electric unit (control unit) connector and 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.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) C CODE Page 52
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 PRESS SEN2 component inspection. See: C1142.
Is the inspection result normal?
YES - Inspection End.
NO - Replace the rear pressure sensor.
Component Inspection
1.CHECK DATA MONITOR
On "DATA MONITOR", select "PRESS SENSOR" and "PRESS SEN2" and check the brake fluid pressure.
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1142.
C1143
C1143, C1144 STEERING ANGLE SENSOR
Description
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
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. See: C1143.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) C CODE Page 53
3. Disconnect steering angle sensor connector.
4. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
5. Reconnect connectors and then perform the self-diagnosis. See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures.
Is any item indicated on the self-diagnosis display?
YES - GO TO 2
NO - Poor connection of connector terminal. Repair or replace connector.
2.CHECK STEERING ANGLE SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect steering angle sensor connector.
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.STEERING ANGLE SENSOR INSPECTION
1. Connect the steering angle sensor connector and ABS actuator and electric unit (control unit) connector.
2. Perform the steering angle sensor component inspection. See: C1143.
Is the inspection result normal?
YES - Replace ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Replace steering angle sensor and adjust neutral position of steering angle sensor. See: Brakes and Traction Control/Antilock Brakes /
Traction Control Systems/Steering Angle Sensor/Service and Repair.
Component Inspection
1.CHECK DATA MONITOR
Select "STR ANGLE SIG" in "DATA MONITOR" and check steering angle sensor signal.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) C CODE Page 54
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1143.
Special Repair Requirement
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). See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- 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). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END
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C1142
C1142 PRESS SENSOR
Description
The front and rear pressure sensors convert the brake fluid pressure to an electric signal and transmit it to the
ABS actuator and electric unit (control unit).
DTC Logic
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. See: C1142.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
FRONT PRESSURE SENSOR
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the front pressure sensor connector and ABS actuator and electric unit (control unit) connector and inspect the terminals for
deformation, disconnection, looseness, or damage.
Is the inspection result normal?
YES - GO TO 2
NO - Repair connector.
2.FRONT PRESSURE SENSOR CIRCUIT INSPECTION
1. Measure the continuity between the ABS actuator and electric unit (control unit) connector E125 (A) and front pressure sensor connector E31
(B).
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) C CODE Page 51
2. Measure the continuity between the ABS actuator and electric unit (control unit) connector E125 (A) and body ground.
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 PRESS SENSOR component inspection. See: C1142.
Is the inspection result normal?
YES - Inspection End.
NO - Replace the front pressure sensor.
REAR PRESSURE SENSOR
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the rear pressure sensor connector and ABS actuator and electric unit (control unit) connector and 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.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) C CODE Page 52
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 PRESS SEN2 component inspection. See: C1142.
Is the inspection result normal?
YES - Inspection End.
NO - Replace the rear pressure sensor.
Component Inspection
1.CHECK DATA MONITOR
On "DATA MONITOR", select "PRESS SENSOR" and "PRESS SEN2" and check the brake fluid pressure.
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1142.
C1143
C1143, C1144 STEERING ANGLE SENSOR
Description
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
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. See: C1143.
NO - Inspection End
Diagnosis Procedure
Regarding Wiring Diagram information, See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical
Diagrams.
1.CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) C CODE Page 53
3. Disconnect steering angle sensor connector.
4. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
5. Reconnect connectors and then perform the self-diagnosis. See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures.
Is any item indicated on the self-diagnosis display?
YES - GO TO 2
NO - Poor connection of connector terminal. Repair or replace connector.
2.CHECK STEERING ANGLE SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect steering angle sensor connector.
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.STEERING ANGLE SENSOR INSPECTION
1. Connect the steering angle sensor connector and ABS actuator and electric unit (control unit) connector.
2. Perform the steering angle sensor component inspection. See: C1143.
Is the inspection result normal?
YES - Replace ABS actuator and electric unit (control unit). See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
NO - Replace steering angle sensor and adjust neutral position of steering angle sensor. See: Brakes and Traction Control/Antilock Brakes /
Traction Control Systems/Steering Angle Sensor/Service and Repair.
Component Inspection
1.CHECK DATA MONITOR
Select "STR ANGLE SIG" in "DATA MONITOR" and check steering angle sensor signal.
Nissan-Datsun Truck Armada 2WD V8-5.6L (VK56DE) C CODE Page 54
Is the inspection result normal?
YES - Inspection End
NO - Go to diagnosis procedure. See: C1143.
Special Repair Requirement
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). See:
Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Steering Angle Sensor/Testing and Inspection/Description.
- 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). See: Brakes and Traction
Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing and Inspection/Description.
- END
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