PRE-CRASH SAFETY SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use the procedures to troubleshoot the pre-crash safety system.

  • *: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK


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  3. 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.


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  4. INSPECT MILLIMETER WAVE RADAR SENSOR ASSEMBLY (BEAM AXIS MISALIGNMENT READING)*


    1. Adjust the reflector height Click here.

    2. Place the reflector Click here.

    3. Connect the GTS to the DLC3.

    4. Turn the GTS on.

    5. Turn the cruise control switch (ON/OFF button) on.

    6. Enter the following menus: Powertrain / Radar Cruise / Utility / Beam Axis Misalignment Reading.

    7. Check the amount of misalignment and make a note.


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  5. CHECK CAN COMMUNICATION SYSTEM*


    1. Using the GTS, check if the CAN communication system is functioning normally.


      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output (for LHD) B
      CAN DTC is output (for RHD) C

      B

      Go to CAN COMMUNICATION SYSTEM Click here

      C

      Go to CAN COMMUNICATION SYSTEM Click here

      A

  6. CHECK FOR DTC*


    1. Clear the DTCs Click here.

    2. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTCs are not output (symptoms can be confirmed or reproduced) A
      DTCs are not output (symptoms cannot be confirmed or reproduced) B
      DTCs are output C

      B

      Go to DIAGNOSTIC TROUBLE CODE CHART Click here

      C

      Go to step 8
      A

  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. Terminals of ECU Click here.

    2. Data List / Active Test Click here.


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  9. ADJUST, REPAIR OR REPLACE

    Tech Tips

    Perform proper procedures according to corresponding faults listed in the problem symptoms table or the corresponding DTCs listed in the diagnostic trouble code chart.

    Note


    • If the lane recognition camera sensor assembly is replaced, the camera needs to be adjusted Click here.

    • If the millimeter wave radar sensor assembly is replaced, the beam axis of the sensor needs to be adjusted Click here.

    • If the driving support ECU is replaced, initialization needs to be performed Click here.


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  10. CONFIRMATION TEST


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    END