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. 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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  3. CHECK COMMUNICATION FUNCTION OF COMMUNICATION SYSTEM*


    1. Check for DTCs and make a note of any codes that are output Click here.

    2. Clear the DTCs.

    3. Recheck for DTCs. Based on the DTCs output above, try to cause the output of the same CAN communication system DTC, LIN communication DTC or lighting system DTC by simulating the symptoms indicated by the DTC.

      Result
      Result Proceed to
      DTC output does not reoccur A
      CAN communication system DTC output reoccurs (for LHD) B
      CAN communication system DTC output reoccurs (for RHD) C
      LIN communication system DTC output reoccurs D
      Lighting system DTC output reoccurs E

      B

      Go to CAN COMMUNICATION SYSTEM Click here

      C

      Go to CAN COMMUNICATION SYSTEM Click here

      D

      Go to LIN COMMUNICATION SYSTEM Click here

      E

      Go to DIAGNOSTIC TROUBLE CODE CHART Click here

      A

  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. Operation Check Click here.

    2. Terminals of ECU Click here.

    3. Data List / Active Test Click here.


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  6. ADJUST, REPAIR OR REPLACE


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  7. CONFIRMATION TEST


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    END