LIGHTING SYSTEM(w/ Automatic Headlight Beam Level Control System), Diagnostic DTC:B2451

DTC Code DTC Name
B2451 Variation Code not Written

DESCRIPTION

The headlight ECU sub-assembly LH stores this DTC if the vehicle specifications have not been stored.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
B2451 Variation Code not Written

    Detection condition:

  • The ignition switch is ON.


    Malfunction status:

  • Vehicle specifications have not been stored


    Malfunction duration:

  • -

 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. SYNCHRONIZE VEHICLE INFORMATION


    1. Synchronize the vehicle information.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. 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 / Trouble Codes.

    5. Clear the DTCs.


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

    NEXT

  3. CHECK FOR 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 / Trouble Codes.

    5. Check for DTCs.


      Body Electrical > HL AutoLeveling > Trouble Codes
      OK
      DTC B2451 is not output.

      Tech Tips

      If the headlight ECU sub-assembly LH stores DTC B2451 even though the vehicle information has been synchronized, the headlight ECU sub-assembly LH may be malfunctioning.

      Result
      Proceed to
      OK
      NG

    OK

    END (VEHICLE SPECIFICATIONS WERE NOT STORED)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here