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WINDOW DEFOGGER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

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Tip:

  • Use the following procedure to troubleshoot the defogger system.

  • The intelligent tester should be used in step 5.


  1. Click here

    VEHICLE BROUGHT TO WORKSHOP


    • NEXT
  2. Click here

    CUSTOMER PROBLEM ANALYSIS CHECK

    Tip:

    • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

    • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

    • The following 5 items are important points in the problem analysis:

    What Vehicle model, system name
    When Date, time, occurrence frequency
    Where Road conditions
    Under what conditions? Driving conditions, weather conditions
    How did it happen? Problem symptoms

    • NEXT
  3. Click here

    INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage.

      Standard voltage
      11 to 14 V

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


      • NEXT
  4. Click here

    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
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    OVERALL ANALYSIS AND TROUBLESHOOTING


    1. Terminals of ECU (Click here)

    2. Data List/Active Test (Click here)

    3. On-vehicle inspection (Click here)


      • NEXT
  6. Click here

    REPAIR OR REPLACE


    • NEXT
  7. Click here

    CONFIRMATION TEST


    • NEXT
    • END