LIGHTING SYSTEM(w/ Automatic Headlight Beam Level Control System), Diagnostic DTC:B242C, B242D

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

DESCRIPTION

The headlight ECU sub-assembly LH or headlight ECU sub-assembly RH stores a DTC if it detects an internal malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
B242C Right Headlight ECU Malfunction

    Detection condition:

  • The ignition switch is ON.


    Malfunction status:

  • Headlight ECU sub-assembly RH internal malfunction


    Malfunction duration:

  • Maximum 15 minutes

 Headlight ECU sub-assembly RH Headlight ECU sub-assembly RH
B242D Left Headlight ECU Malfunction

    Detection condition:

  • The ignition switch is ON.


    Malfunction status:

  • Headlight ECU sub-assembly LH internal malfunction


    Malfunction duration:

  • Maximum 15 minutes

 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. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / HL AutoLeveling or HL AutoLeveling (Sub) / Trouble Codes.

    5. Clear the DTCs.


      Body Electrical > HL AutoLeveling > Clear DTCs
      Body Electrical > HL AutoLeveling (Sub) > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Wait for at least maximum 15 minutes.

    4. Turn the GTS on.

    5. Enter the following menus: Body Electrical / HL AutoLeveling or HL AutoLeveling (Sub) / Trouble Codes.

    6. Check for DTCs.


      Body Electrical > HL AutoLeveling > Trouble Codes
      Body Electrical > HL AutoLeveling (Sub) > 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