LIGHTING SYSTEM, Diagnostic DTC:B2451

DTC Code DTC Name
B2451 Vehicle Specifications have not been Stored

DESCRIPTION

This DTC is output if the vehicle variation information is not written to the headlight ECU sub-assembly LH.

The headlight ECU sub-assembly LH outputs DTC B2451.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2451 Vehicle Specifications have not been Stored Vehicle specification information not written Headlight ECU sub-assembly LH -

CAUTION / NOTICE / HINT

Note


  • After the headlight ECU sub-assembly LH is replaced, vehicle information registration and initialization are necessary.

    Click here

  • Before replacing the ECM or main body ECU (multiplex network body ECU), refer to Service Bulletin.

PROCEDURE


  1. VEHICLE INFORMATION HEADLIGHT ECU SUB-ASSEMBLY LH


    1. Register vehicle information for the headlight ECU sub-assembly LH.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. CLEAR DTC


    1. Clear the DTCs.

      Click here


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

    NEXT

  3. CHECK FOR DTC


    1. Turn the power switch to on (IG).

    2. Turn on the headlights using the light control switch.

    3. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      Result
      Result Proceed to
      DTC B2451 output does not occur A
      DTC B2451 output occurs B

    A

    END (NORMAL AFTER VEHICLE INFORMATION REGISTERED)

    B

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH Click here