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DTC B2451: Variation Code not Written [03/2019 - ]: Procedure

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  1. SYNCHRONIZE VEHICLE INFORMATION 
    1. Synchronize the vehicle information.

      Refer to INITIALIZATION [03/2019 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream 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

    Result: 

    NEXT 

    See step  3

  3. CHECK FOR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream 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.

      HINT: 

      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

    Result: 

    OK 

    END (VEHICLE SPECIFICATIONS WERE NOT STORED) 

    Result: 

    NG 

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [03/2019 - ]