WINDOW DEFOGGER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use these procedures to troubleshoot the window defogger system.

  • *: Use the intelligent tester.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


    1. Using the intelligent tester, inspect battery voltage reduction history "Battery Voltage Lo Record" in the Data List.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK LIN COMMUNICATION SYSTEM*


    1. Check if the LIN communication system is functioning normally.

      OK
      LIN DTC is not output.
      Result
      Result
      OK
      NG

    NG

    Go to LIN COMMUNICATION SYSTEM Click here

    OK

  4. PROBLEM SYMPTOMS TABLE


    1. Refer to the Problem Symptoms Table.

      Click here

      Result
      Result Proceed to
      Fault is not listed in problem symptoms table A
      Fault is listed in problem symptoms table B

    B

    GO TO STEP 6 Click here

    A

  5. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECU

      Click here

    2. Data List / Active Test

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  7. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END