ELECTRIC PARKING BRAKE SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these procedures to troubleshoot the electric parking brake system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. INSPECT AUXILIARY BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

    If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.


    NEXT

  3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Using the intelligent tester, inspect the CAN communication function to ensure there are no malfunctions in the communication system.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output (for LHD) B
      DTC is output (for RHD) C

      B

      GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLE SHOOTING) Click here

      C

      GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLE SHOOTING) Click here

      A

  4. CHECK DTC AND FREEZE FRAME DATA*


    NEXT

  5. CLEAR DTC AND FREEZE FRAME DATA*


    NEXT

  6. PROBLEM SYMPTOM CONFIRMATION


    NEXT

  7. DTC CHECK AND CLEAR*


    NEXT

  8. PROBLEM SYMPTOM CONFIRMATION

    Result
    Result Proceed to
    Symptom does not occur A
    Symptom occurs B

    B

    GO TO STEP 10
    A

  9. SYMPTOM SIMULATION


    NEXT

  10. CHECK FOR DTC (OTHER THAN CAN COMMUNICATION SYSTEM DTC)*

    Result
    Result Proceed to
    DTC is not output A
    DTC is output B

    B

    GO TO STEP 12
    A

  11. PROBLEM SYMPTOMS TABLE


    NEXT
    GO TO STEP 13

  12. DTC CHART


    NEXT

  13. CIRCUIT INSPECTION*


    NEXT

  14. IDENTIFICATION OF PROBLEM


    NEXT

  15. REPAIR OR REPLACE


    NEXT

  16. CONFIRMATION TEST*


    NEXT
    END