WIPER AND WASHER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

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


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK


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  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. PROBLEM SYMPTOMS TABLE

    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
    A

  5. OVERALL ANALYSIS AND TROUBLESHOOTING


    1. Terminals of ECU Click here

    2. Fail-safe chart Click here


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  6. ADJUST, REPAIR OR REPLACE


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  7. CONFIRMATION TEST


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    END