WIPER AND WASHER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


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

  • *: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK


    NEXT

  3. INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage with the power switch off.

      Standard voltage
      11 to 14 V

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


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  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Use the GTS to check if the CAN communication system is functioning normally.


      Result
      Result Proceed to
      CAN DTC is not output (w/ Rain Sensor) A
      CAN DTC is not output (w/o Rain Sensor) B
      CAN DTC is output (for LHD) C
      CAN DTC is output (for RHD) D

      B

      GO TO STEP 6
      C

      GO TO CAN COMMUNICATION SYSTEM Click here

      D

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  5. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM


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

      Result
      Result Proceed to
      LIN communication system is functioning normally A
      LIN communication system is not functioning normally B

      B

      GO TO LIN 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. Fail-safe chart Click here.


      NEXT

  8. ADJUST, REPAIR OR REPLACE


    NEXT

  9. CONFIRMATION TEST


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    END