AUTOMATIC HIGH BEAM SYSTEM, Diagnostic DTC:B2461

DTC Code DTC Name
B2461 Vehicle Information not written in AHB ECU

DESCRIPTION

This DTC is output when the vehicle information is not registered after replacing the main body ECU (multiplex network body ECU) or when the vehicle information cannot be written to the inner rear view mirror assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2461 Vehicle Information not written in AHB ECU Synchronization of vehicle information is not completed

  • CAN communication system

  • Inner rear view mirror assembly

  • Main body ECU (multiplex network body ECU)

WIRING DIAGRAM

B006KZ0E01
*1 Inner Rear View Mirror Assembly
*2 Main Body ECU (Multiplex Network Body ECU)
*3 CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • Confirm that there are no CAN communication system malfunctions before performing the following inspection.

    Click here

  • If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

  • Confirm that there are no inner rear view mirror assembly is no malfunctioning before performing the following inspection.

    Click here

Tech Tips

This DTC is stored in inner rear view mirror assembly.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Automatic High Beam > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Automatic High Beam > Trouble Codes
      Result
      Result Proceed to
      DTC B2461 is not output A
      DTC B2461 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  2. CHECK MAIN BODY ECU (MULIPLEX NETWORK BODY ECU)


    1. Check that the main body ECU (multiplex network body ECU) part number matches the vehicle.

      Result
      Result Proceed to
      Main body ECU (multiplex network body ECU) part number matches vehicle A
      Main body ECU (multiplex network body ECU) part number does not match vehicle B

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    A

  3. CHECK INNER REAR VIEW MIRROR ASSEMBLY


    1. Replace the inner rear view mirror assembly with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Clear DTCs

    3. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      Result
      Result Proceed to
      DTC B2461 is not output A
      DTC B2461 is output B

    A

    END (INNER REAR VIEW MIRROR ASSEMBLY WAS DEFECTIVE)

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here