AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM, Diagnostic DTC:B2451

DTC Code DTC Name
B2451 Vehicle Specifications have not been Stored

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2451 Vehicle Specifications have not been Stored Vehicle specifications have not been stored 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. for Single Beam Headlight:


      1. Synchronize the vehicle information.

        Click here


        Body Electrical > HL AutoLeveling > Utility
        Tester Display
        ECU Information Sync

    2. for Triple Beam Headlight:


      1. Synchronize the vehicle information.

        Click here


        Body Electrical > AFS > Utility
        Tester Display
        ECU Information Sync
      Result
      Proceed to
      NEXT

    NEXT

  2. 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

  3. 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 B2451 is not output.

    3. for Triple Beam Headlight:


      1. Check for DTCs.

        Click here


        Body Electrical > AFS > Trouble Codes
        OK
        DTC B2451 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (VEHICLE SPECIFICATIONS WERE NOT STORED)

    NG

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here