LANE DEPARTURE ALERT SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use the following procedure to troubleshoot the lane departure alert system.

  • *: Use the Techstream.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. 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, replace or recharge the auxiliary battery before proceeding to the next step.


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  3. CHECK CAN COMMUNICATION SYSTEM*


    1. Use the Techstream to check if the CAN communication system is functioning normally.

      Result
      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output B

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  4. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)*


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

    2. Clear the DTCs Click here.

    3. Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs Click here.

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

      B

      GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

      A

  5. PROBLEM SYMPTOMS TABLE

    Tech Tips

    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 8
    A

  6. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECU Click here

    2. Data List / Active Test Click here


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  7. ADJUST, REPAIR OR REPLACE

    Note

    When the lane departure warning camera is replaced with a new one, adjustment of the lane departure warning camera axis must be performed Click here.


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  8. CONFIRMATION TEST


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    END