AUTOMATIC HIGH BEAM SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use the following procedure to troubleshoot the lighting system.

  • *: Use the GTS

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage with the ignition switch off.

      Standard Voltage
      11 to 14 V

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

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Using the GTS, display the "CAN Bus Check" screen and check all ECUs and sensors connected to the CAN communication system.

      w/ Toyota Safety Sense Click here

      w/o Toyota Safety Sense Click here

      Result
      Result Proceed to
      CAN communication system DTCs are output A
      CAN communication system DTCs are not output (w/ Toyota Safety Sense) B
      CAN communication system DTCs are not output (w/o Toyota Safety Sense) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  4. CHECK FOR DTC


    1. Check for DTCs.

      Click here

    2. Clear the DTCs.

      Click here

    3. Recheck for DTCs.

      Click here

      Tech Tips

      When a DTC is output, go to the Diagnostic Trouble Code Chart.

      Click here

      Result
      Result Proceed to
      No DTCs are output (symptoms can be confirmed and reproduced) A
      No DTCs are output (symptoms cannot be confirmed and reproduced) B
      DTCs output C

    B

    USE SIMULATION METHOD TO CHECK Click here

    C

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  5. 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 PROBLEM SYMPTOMS TABLE Click here

    A

  6. PERFORM TROUBLESHOOTING BASED ON PROBLEM SYMPTOM


    1. Operation check

      Click here

    2. Terminals of ECU

      Click here

    3. Data List / Active Test

      Click here

    4. Fail-safe chart

      Click here

    5. On-vehicle inspection

    6. Inspection

      Result
      Proceed to
      NEXT

    NEXT

  7. ADJUST, REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  8. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END