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 No. 1 headlight ECU sub-assembly LH or No. 1 headlight ECU sub-assembly RH detects an internal malfunction. The No. 1 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 No. 1 headlight ECU sub-assembly RH No. 1 headlight ECU sub-assembly RH -
B242D Left Headlight ECU Malfunction An internal malfunction occurs in the No. 1 headlight ECU sub-assembly LH No. 1 headlight ECU sub-assembly LH -

CAUTION / NOTICE / HINT

Note

If the No. 1 headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the No. 1 headlight ECU sub-assembly LH.

Click here

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Turn the power switch on (IG).

    2. Clear the DTCs.

      Click here


      Body Electrical > HL AutoLeveling > 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 NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH Click here

    C

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH Click here