PRE-COLLISION 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 pre-collision system.

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT BATTERY VOLTAGE


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

      Standard voltage
      11 to 14 V

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

      Result
      Proceed to
      NEXT

    NEXT

  3. INSPECT WARNING LIGHT


    1. Check the condition of the warning lights on the combination meter assembly.

      Result
      Result Proceed to
      Only the PCS warning light is blinking A
      The PCS warning light is not blinking
      The PCS warning light and other warning lights are illuminated or blinking B

    B

    GO TO MALFUNCTIONING SYSTEM

    A

  4. INSPECT MULTI-INFORMATION DISPLAY


    1. Check if a pre-collision system warning message is displayed on the multi-information display in the combination meter assembly.

      Result
      Result Proceed to
      "PRE-COLLISION SYSTEM MALFUNCTION VISIT YOUR DEALER" A

      Any of the following messages is displayed:


      • "PRE-COLLISION SYSTEM UNAVAILABLE"

      • "FRONT CAMERA SYSTEMS UNAVAILABLE WAIT A MOMENT"

      • "FRONT CAMERA SYSTEMS UNAVAILABLE CLEAN WINDSHIELD"

      		 B
      Warning message is not displayed C

    B

    GO TO STEP 7 Click here

    C

    CHECK CONDITIONS WHEN PRE-COLLISION SYSTEM DID NOT OPERATE Click here

    A

  5. CHECK FOR DTCs*


    1. Clear the DTCs.

      Click here

    2. Check 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 SYMPTOM SIMULATION Click here

    C

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  6. READ VALUE USING GTS


    1. Read the Data List according to the display on the GTS.

      Click here

      Chassis > PCS/LDA/RSA/LVN > Data List
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      History of Blockage Displays whether there are camera or laser sensor obstruction history / ON or OFF

      ON: Pre-collision city sensor (camera or laser sensor) obstruction history exists

      OFF: Pre-collision city sensor (camera or laser sensor) obstruction history does not exist

      		 -
      History of Low Voltage Displays whether there is low voltage history / ON or OFF

      ON: Pre-collision city sensor low voltage history exists

      OFF: Pre-collision city sensor low voltage history does not exist

      		 -
      History of Low Voltage Displays whether there is high voltage history / ON or OFF

      ON: Pre-collision city sensor high voltage history exists

      OFF: Pre-collision city sensor high voltage history does not exist

      		 -
      History of Low Temperature Displays whether there is low temperature history / ON or OFF

      ON: Pre-collision city sensor low temperature history exists

      OFF: Pre-collision city sensor low temperature history does not exist

      		 -
      History of High Temperature Displays whether there is high temperature history / ON or OFF

      ON: Pre-collision city sensor high temperature history exists

      OFF: Pre-collision city sensor high temperature history does not exist

      		 -
      Blockage Status Displays whether there is a camera obstruction malfunction / ON or OFF

      ON: Pre-collision city sensor (camera) obstructed

      OFF: Pre-collision city sensor (camera) not obstructed

      		 -
      Low Voltage Status Displays whether there is a low voltage malfunction / ON or OFF

      ON: Pre-collision city sensor low voltage malfunction exists

      OFF: Pre-collision city sensor low voltage malfunction does not exist

      		 -
      High Voltage Status Displays whether there is a high voltage malfunction / ON or OFF

      ON: Pre-collision city sensor high voltage malfunction exists

      OFF: Pre-collision city sensor high voltage malfunction does not exist

      		 -
      Low Temperature Status Displays whether there is a low temperature malfunction / ON or OFF

      ON: Pre-collision city sensor low temperature malfunction exists

      OFF: Pre-collision city sensor low temperature malfunction does not exist

      		 -
      High Temperature Status Displays whether there is a high temperature malfunction / ON or OFF

      ON: Pre-collision city sensor high temperature malfunction exists

      OFF: Pre-collision city sensor high temperature malfunction does not exist

      		 -
      Lidar Blockage Status Displays whether laser sensor is dirty / ON or OFF

      ON: Dirt on pre-collision city sensor (laser sensor)

      OFF: No dirt on pre-collision city sensor (laser sensor)

      		 -
      Result
      Result Proceed to
      Malfunction history exists A
      No malfunction history exists B

    B

    GO TO STEP 8 Click here

    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

    GO TO STEP 9 Click here

    A

  8. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Terminals of ECU.

      Click here

    2. Data List / Active Test.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  9. ADJUST, REPAIR OR REPLACE

    Tech Tips

    If the pre-collision city sensor has been replaced, be sure to perform Pre-collision City Sensor Learning.

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  10. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END

  11. CHECK CONDITIONS WHEN PRE-COLLISION SYSTEM DID NOT OPERATE


    1. Check if the problem occurred under any of the following conditions.

      Situations in which the pre-collision system may not function properly
      When driving on roads with sharp bends or uneven surfaces
      If a vehicle suddenly moves in front of your vehicle, such as at an intersection
      If a vehicle suddenly cuts in front of your vehicle
      If your vehicle is skidding
      When the front part of the vehicle is raised or lowered
      When the windshield is dirty or covered with raindrops, condensation, ice, snow, etc.
      When the sensor is misaligned due to a strong impact being applied to the sensor, etc.
      When a preceding vehicle is a poor reflector of laser (the rear part of the vehicle lowered, very dirty, etc.)
      When a very bright light, such as the sun or the headlights of oncoming traffic, shines directly into the pre-collision city sensor
      When driving in inclement weather such as heavy rain, fog, snow or a sand storm
      When the surrounding area is dark, such as while in a tunnel or during nighttime
      Result
      Result Proceed to
      Problem occurred under condition above A
      Problem did not occur under condition above B

    A

    END

    B

    GO TO STEP 5 Click here