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Home >> Nissan-Datsun >> 2013 >> Juke SL, FWD, Standard Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System >> DTC/Circuit Diagnosis >> DTC C1143: Steering Angle Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
    3. Check the steering angle sensor harness connector for disconnection or looseness.

      Is the inspection result normal? 

      YES: GO TO  3.

      NO: Repair or replace error-detected parts, securely lock the harness connector, and GO TO 2.

  2. PERFORM SELF-DIAGNOSIS 

    Perform self-diagnosis for "ABS" again.

    Is DTC "C1143" detected? 

    YES: GO TO 3.

    NO: INSPECTION END

  3. CHECK STEERING ANGLE SENSOR POWER SUPPLY 
    1. Turn the ignition switch OFF.
    2. Disconnect steering angle sensor harness connector.
    3. Check the voltage between steering angle sensor harness connector and ground.
      Steering angle sensor - Voltage
      Connector Terminal
      M30 4 Ground Approx. 0 V
    4. Turn the ignition switch ON.
      CAUTION: Never start engine.
    5. Check the voltage between steering angle sensor harness connector and ground.
      Steering angle sensor - Voltage
      Connector Terminal
      M30 4 Ground Battery voltage

      Is the inspection result normal? 

      YES: GO TO  5.

      NO: GO TO 4.

  4. CHECK STEERING ANGLE SENSOR POWER SUPPLY CIRCUIT 
    1. Turn the ignition switch OFF.
    2. Check the 10A fuse (#3).
    3. Check the continuity and short circuit between steering angle sensor harness connector terminal (4) and 10A fuse (#3).

      Is the inspection result normal? 

      YES: Perform trouble diagnosis for ignition power supply. Refer to "WIRING DIAGRAM - IGNITION POWER SUPPLY - ".

      NO: Repair or replace error-detected parts.

  5. CHECK STEERING ANGLE SENSOR GROUND CIRCUIT 
    1. Turn the ignition switch OFF.
    2. Check the continuity between steering angle sensor harness connector and ground.
      Steering angle sensor - Continuity
      Connector Terminal
      M30 1 Ground Existed

      Is the inspection result normal? 

      YES: GO TO 6.

      NO: Repair or replace error-detected parts.

  6. CHECK TERMINAL 

    Check the steering angle sensor pin terminals for damage or loose connection with harness connector.

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Repair or replace error-detected parts.

  7. CHECK CAN COMMUNICATION LINE 

    Check the "STRG BRANCH LINE CIRCUIT". Refer to "DIAGNOSIS PROCEDURE ".

    Is the inspection result normal? 

    YES: Replace ABS actuator and electric unit (control unit). Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair or replace error-detected parts. Refer to "PRECAUTION FOR HARNESS REPAIR ".

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