LIGHTING SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these procedures to troubleshoot the lighting system.

  • *: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  2. INSPECT AUXILIARY BATTERY VOLTAGE

    Standard voltage
    11 to 14 V

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


    NEXT

  3. CHECK COMMUNICATION FUNCTION OF COMMUNICATION SYSTEM*


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG) and turn the GTS on.

    3. Enter the following menus: System Select / Health Check.

    4. Check for DTC and make a note of any codes that are output.

    5. Clear the DTC.

    6. Recheck for DTC. Based on the DTC 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

      B

      Go to CAN COMMUNICATION SYSTEM Click here

      C

      Go to CAN COMMUNICATION SYSTEM Click here

      D

      Go to LIN COMMUNICATION SYSTEM Click here

      A

  4. CONFIRM PROBLEM SYMPTOMS


    1. Confirm the problem symptoms.

      Result
      Result Proceed to
      Problem with adaptive high beam system A
      Problem with something other than adaptive high beam system B

      B

      Go to step 11
      A

  5. CHECK FOR DTC*


    1. Check for DTC Click here.

    2. Clear the DTC Click here.

    3. Turn the power switch on (IG) and turn the high beam headlights on.

    4. Recheck for DTC Click here.

      Result
      Result Proceed to
      DTC output does not reoccur A
      DTC output reoccurs B

      B

      Go to DIAGNOSTIC TROUBLE CODE CHART Click here

      A

  6. PERFORM ACTIVE TEST*


    1. Perform the Active Test and check if DTCs are output Click here.

      AHS
      Tester Display Test Part Control Range
      Variable Shade Beam LH Variable shade beam LH operation OFF - ON
      Variable Shade Beam RH Variable shade beam RH operation OFF - ON
      OK
      DTC output does not occur.

      NG

      Go to DIAGNOSTIC TROUBLE CODE CHART Click here

      OK

  7. 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

      ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
      A

  8. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Operation Check Click here.

    2. Terminals of ECU Click here.

    3. Data List / Active Test Click here.


      NEXT

  9. ADJUST, REPAIR OR REPLACE


    NEXT

  10. CONFIRMATION TEST


    NEXT
    END

  11. CHECK FOR DTC*


    1. Check for DTC Click here.

    2. Clear the DTC Click here.

    3. Recheck for DTC Click here.

      Result
      Result Proceed to
      DTC output does not reoccur A
      DTC output reoccurs B

      B

      Go to DIAGNOSTIC TROUBLE CODE CHART Click here

      A

  12. 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

      ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
      A

  13. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Operation Check Click here.

    2. Terminals of ECU Click here.

    3. Data List / Active Test Click here.


      NEXT

  14. ADJUST, REPAIR OR REPLACE


    NEXT

  15. CONFIRMATION TEST


    NEXT
    END