ADAPTIVE HIGH BEAM SYSTEM, Diagnostic DTC:B2438

DTC Code DTC Name
B2438 Camera Detection Malfunction

DESCRIPTION

If the front recognition camera is obstructed such as when the front windshield glass or forward recognition camera lens is dirty, the headlight ECU sub-assembly LH stores DTC B2438.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2438 Camera Detection Malfunction The forward recognition camera detection is abnormal

  • Forward recognition camera

  • Headlight ECU sub-assembly LH

 -

CAUTION / NOTICE / HINT

Note


  • When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.

  • If the forward recognition camera has been replaced or removed and installed, be sure to perform adjustment of the forward recognition camera.

    Click here

  • If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.

    Click here

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FORWARD RECOGNITION CAMERA OPERATING CONDITIONS


    1. Check that the front recognition camera is not obstructed due to foreign matter on the front windshield glass or forward recognition camera lens.

      OK
      The forward recognition camera is not obstructed by foreign matter on the front windshield glass or forward recognition camera lens.
      Result
      Proceed to
      OK
      NG

    NG

    END (Forward recognition camera was obstructed by foreign matter)

    OK

  3. CHECK FOR DTC


    1. Turn the engine switch on (IG).

    2. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2438 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (Operation of the adaptive high beam system was stopped due to a forward recognition camera detection malfunction)

    NG

  4. REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera with a new one.

      Click here

    2. Turn the engine switch on (IG).

    3. Clear the DTCs.

      Click here


      Body Electrical > AFS > Clear DTCs

    4. Perform forward recognition camera optical axis learning.

      Click here

    5. Check for DTCs.

      Click here


      Body Electrical > AFS > Trouble Codes
      OK
      DTC B2438 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here