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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 477 (Brake Control System (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC C1111: Abs Motor, Motor Relay System >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  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.

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Repair / replace harness or connector, securely lock the connector, and GO TO 2.

  2. PERFORM SELF-DIAGNOSIS 

    SYMBOL CONSULT

    1. Turn the ignition switch OFF -> ON, and wait 30 seconds.
    2. Start the engine.
    3. Drive the vehicle at approx. 50 km/h (31 MPH) or more for approx. 2 minutes.
      NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
    4. Stop the vehicle.
    5. Turn the ignition switch OFF.
      NOTE: Wait at least 10 seconds after turning ignition switch OFF.
    6. Start the engine.
      NOTE: Wait at least 10 seconds after starting the engine.
    7. Perform "Self Diagnostic Result" of "ABS".

    Is DTC "C1111" detected?

    YES

    GO TO 3.

    NO

    Inspection End.

  3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIRCUIT 

    Check the ABS actuator and electric unit (control unit) power supply and ground circuits. Refer to Diagnosis Procedure .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair / replace harness, connector, or fuse, and GO TO 4.

  4. ERASE SELF-DIAGNOSIS RESULT (1) 

    SYMBOL CONSULT

    1. Start the engine.
    2. Drive the vehicle at approx. 50 km/h (31 MPH) or more for approx. 2 minutes.
      NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
    3. Stop the vehicle.
    4. Erase "Self Diagnostic Result" of "ABS".
    5. Turn the ignition switch OFF → ON → OFF.
      NOTE: Wait at least 10 seconds after turning ignition switch OFF or ON.

    Inspection End.

  5. CHECK TERMINAL 
    1. Turn the ignition switch OFF.
    2. Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness connector.

    Is the inspection result normal?

    YES

    Replace the ABS actuator and electric unit (control unit). Refer to Removal and Installation .

    NO

    Repair / replace harness or connector, and GO TO 6.

  6. ERASE SELF-DIAGNOSIS RESULT (2) 

    SYMBOL CONSULT

    1. Start the engine.
    2. Drive the vehicle at approx. 50 km/h (31 MPH) or more for approx. 2 minutes.
      NOTE: Vehicle must be driven after repair or replacement to erase the previous DTCs.
    3. Stop the vehicle.
    4. Erase "Self Diagnostic Result" of "ABS".
    5. Turn the ignition switch OFF → ON → OFF.
      NOTE: Wait at least 10 seconds after turning ignition switch OFF or ON.

    Inspection End.

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