LEMON Manuals: Even more car manuals for everyone
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 C1109: Power And Ground 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

    1. Turn the ignition switch OFF.
      NOTE:

      Wait at least 10 seconds after turning ignition switch OFF.

    2. Start the engine.
      NOTE:

      Wait at least 10 seconds after starting the engine.

    3. Select "Self Diagnostic Result" mode of "ABS".

    Is DTC "C1109" 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 4  .

    NO 

    Repair / replace harness, connector, fuse, or fusible link.

  4. CHECK TERMINAL

    1. Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness connector.
    2. Check the IPDM E/R 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, connector, or terminal.