WINDSHIELD DEICER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these procedures to troubleshoot the windshield deicer system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


    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.


    NEXT

  3. CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Result
      Result Proceed to
      w/o Navigation System A
      w/ Navigation System B

      B

      Go to step 5
      A

  4. CHECK LIN COMMUNICATION SYSTEM


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

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

      B

      Go to step 6
      A
      Go to LIN COMMUNICATION SYSTEM Click here

  5. CHECK CAN COMMUNICATION SYSTEM


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


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

      B

      Go to CAN COMMUNICATION SYSTEM Click here

      C

      Go to CAN COMMUNICATION SYSTEM Click here

      A

  6. 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

      ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
      A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECU Click here

    2. Data List / Active Test Click here


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  8. REPAIR OR REPLACE


    NEXT

  9. CONFIRMATION TEST


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    END