LIGHTING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these procedures to troubleshoot the lighting system.

  • *: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK


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  3. INSPECT BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


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  4. INSPECT MULTIPLEX COMMUNICATION SYSTEM (BEAN)*


    1. Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.

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

      B

      Go to step 8
      A

  5. CHECK FOR DTC*

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

    B

    Go to step 8
    A

  6. PROBLEM SYMPTOMS TABLE

    Result
    Result Proceed to
    If fault is not listed in problem symptoms table A
    If fault is listed in problem symptoms table B

    B

    Go to step 8
    A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List / Active Test Click here

    2. Terminals of ECU Click here

    3. Inspection


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  8. ADJUST, REPAIR OR REPLACE


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  9. CONFIRMATION TEST


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    END