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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (Brake Control System (DTC/Circuit Diagnosis) (Without ICC) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC C1111: Abs Motor, Motor Relay System >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti QX60. 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 STEP 3  .

    NO 

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

  2. PERFORM SELF-DIAGNOSIS

    G-20 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. Select "Self Diagnostic Result" mode of "ABS".

    Is DTC "C1111" detected?

    YES 

    GO TO STEP 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 STEP 5  .

    NO 

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

  4. ERASE SELF-DIAGNOSIS RESULT (1)

    G-20 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 STEP 6  .

  6. ERASE SELF-DIAGNOSIS RESULT (2)

    G-20 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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