LIGHTING SYSTEM(for LED Headlight), 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 RH detects an internal malfunction. The No. 1 headlight ECU sub-assembly LH stores DTC B242C and B242D.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from 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 No. 1 headlight ECU sub-assembly LH -
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 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. CHECK FOR DTC


    1. Clear the DTCs.

      Click here

    2. Turn the ignition switch to ON.

    3. Check for DTCs.

      Click here

      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 LH Click here

    C

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