LIGHTING SYSTEM, Diagnostic DTC:B242C, B242D

DTC Code DTC Name
B242C Right Headlight ECU Malfunction
B242D Left Headlight ECU Malfunction

DESCRIPTION

These DTCs are stored if the headlight ECU sub-assembly LH or RH detects an internal malfunction. The headlight ECU sub-assembly LH stores DTC B242C or B242D.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B242C Right Headlight ECU Malfunction An internal malfunction occurs in the headlight ECU sub-assembly RH Headlight ECU sub-assembly RH -
B242D Left Headlight ECU Malfunction An internal malfunction occurs in the headlight ECU sub-assembly LH Headlight ECU sub-assembly LH -

CAUTION / NOTICE / HINT

Note

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. for Single Beam Headlight:


      1. Clear the DTCs.

        Click here


        Body Electrical > HL AutoLeveling > Clear DTCs

    2. for Triple Beam Headlight:


      1. Clear the DTCs.

        Click here


        Body Electrical > AFS > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Turn the engine switch on (IG).

    2. for Single Beam Headlight:


      1. Check for DTCs.

        Click here


        Body Electrical > HL AutoLeveling > Trouble Codes
        OK
        DTC B242C and B242D are not output.

    3. for Triple Beam Headlight:


      1. Check for DTCs.

        Click here


        Body Electrical > AFS > Trouble Codes
        OK
        DTC B242C and B242D are not output.
      Result
      Result Proceed to
      OK A
      NG (DTC B242C is output) B
      NG (DTC B242D is output) C

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    C

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here