WIPER AND WASHER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use the following procedures to troubleshoot the wiper and washer system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. PROBLEM SYMPTOM CONFIRMATION

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

    B

    GO TO STEP 4
    A

  3. SYMPTOM SIMULATION


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  4. CHECK MULTIPLEX COMMUNICATION SYSTEM*


    1. Check for the multiplex communication system DTCs.

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

      B

      PROCEED TO "MULTIPLEX COMMUNICATION SYSTEM"
      A

  5. CHECK CAN COMMUNICATION SYSTEM*


    1. Check for CAN DTCs.

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

      B

      PROCEED TO "CAN COMMUNICATION SYSTEM"
      A

  6. PROBLEM SYMPTOMS TABLE


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  7. CIRCUIT INSPECTION


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  8. TERMINALS OF ECU


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  9. IDENTIFICATION OF PROBLEM


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  10. REPAIR OR REPLACE


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  11. CONFIRMATION TEST


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    END