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Home >> Infiniti >> 2017 >> QX70 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 195 (Brake Control System (With VDC) (Diagnostic Trouble Codes (DTCS) C1113-U110D And Circuit Diagnosis) (Hybrid)) >> DTC / Circuit Diagnosis >> DTC C118A: Electrically-Driven Intelligent Brake System >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

  1. CHECK ELECTRICALLY-DRIVEN INTELLIGENT BRAKE SYSTEM

    G-20 With CONSULT

    Perform self-diagnosis for "BRAKE". Refer to CONSULT FUNCTION .

    Is DTC detected?

    YES 

    Check the DTC. Refer to DTC INDEX .

    NO 

    GO TO STEP 2  .

  2. CHECK CONNECTOR AND TERMINAL

    1. Turn the ignition switch OFF and disconnect CONSULT from data link connector.
    2. Get out of the vehicle, close all doors (including trunk lid), check that the map lamp is OFF, and wait for 3 minutes or more without opening these doors.
      NOTE:

      Never operate the vehicle.

    3. Disconnect 12V battery cable from negative terminal. Refer to PRECAUTION FOR REMOVING 12V BATTERY .
    4. Disconnect electrically-driven intelligent brake unit harness connector.
    5. Disconnect ABS actuator and electric unit (control unit) harness connector.
    6. Check the connector for disconnection or looseness.
    7. Check the pin terminals for damage or loose connection with harness connector.

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair / replace harness, connector, or terminal, securely lock the connector, and GO TO STEP 3  .

  3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

    G-20 With CONSULT

    1. Connect ABS actuator and electric unit (control unit) harness connector.
    2. Connect electrically-driven intelligent brake unit harness.
    3. Turn the ignition switch OFF.
      NOTE:

      Wait at least 10 seconds after turning ignition switch OFF.

    4. Set the vehicle to READY/Start the engine.
      NOTE:

      Wait at least 10 seconds after set the vehicle to READY/start the engine.

    5. Repeat step 3 to 4 two or more times.
    6. Perform self-diagnosis for "ABS".

    Is DTC "C118A" or "U1000" detected?

    YES ("C118A") 

    Replace the ABS actuator and electric unit (control unit). Refer to REMOVAL AND INSTALLATION .

    YES ("U1000") 

    Refer to PRECAUTIONS FOR HARNESS REPAIR .

    NO 

    INSPECTION END