WINDOW DEFOGGER SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
  1. Use the following procedure to troubleshoot the window defogger system.
  2. *: Use the intelligent tester.



1.VEHICLE BROUGHT TO WORKSHOP

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    2.CUSTOMER PROBLEM ANALYSIS

      HINT:
      1. 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.
      2. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
      3. 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


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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

    1. Refer to 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.
    Go to step 6
    A


    5.OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. Terminals of ECU (Click here)

    2. Data List / Active Test (Click here)

    3. On-vehicle Inspection (Click here)


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    6.REPAIR OR REPLACE

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      7.CONFIRMATION TEST

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        END