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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Brake Control System (VDC - Diagnostic Trouble Codes (DTCS) Symptom Tests And Component R&R) (Exc Hybrid) >> DTC/Circuit Diagnosis >> DTC C1111: Abs Motor, Motor Relay System >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  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

    With CONSULT

    1. Turn the ignition switch OFF → ON, and wait 30 seconds.
    2. Drive the vehicle at approx. 50 km/h (31 MPH) or more for approx. 2 minutes.
    3. Stop the vehicle.
    4. Turn the ignition switch OFF → ON.
      CAUTION:
      • Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
      • Start the engine.
    5. Repeat step 4 two or more times.
    6. Perform self-diagnosis for "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 circuit. 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)

    With CONSULT

    1. Drive the vehicle at approx. 50 km/h (31 MPH) or more for approx. 2 minutes.
    2. Stop the vehicle.
    3. Erase self-diagnosis result for "ABS".
    4. Turn the ignition switch OFF → ON → OFF.
      CAUTION:

      Be sure to wait of 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)

    With CONSULT

    1. Drive the vehicle at approx. 50 km/h (31 MPH) or more for approx. 2 minutes.
    2. Stop the vehicle.
    3. Erase self-diagnosis result for "ABS".
    4. Turn the ignition switch OFF → ON → OFF.
      CAUTION:

      Be sure to wait of 10 seconds after turning ignition switch OFF or ON.

    INSPECTION END