LANE DEPARTURE ALERT SYSTEM (w/o Dynamic Radar Cruise Control System) HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use these procedures to troubleshoot the lane departure alert system.

  • *: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage.

      Standard voltage
      11 to 14 V

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


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  3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


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

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

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  4. CHECK FOR DTCs*

    Refer to DTC Check / Clear Click here.


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

    2. Clear the DTCs.

    3. Recheck for DTCs. Based on the DTCs output in the first step, try to reproduce the lane departure alert system DTCs by simulating the conditions indicated by the DTCs.

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

      B

      GO TO DTC 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 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 camera sensor beam axis must be performed Click here.


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  8. CONFIRMATION TEST


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    END