AUTOMATIC HIGH BEAM SYSTEM, Diagnostic DTC:B124A, B124C

DTC Code DTC Name
B124A Automatic High Beam Mirror
B124C Automatic High Beam Camera

DESCRIPTION

This DTC is stored when the main body ECU (multiplex network body ECU) detects a malfunction in the inner rear view mirror assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
B124A Automatic High Beam Mirror Malfunction in inner rear view mirror assembly (automatic high beam sensor)

  • CAN communication system

  • Inner rear view mirror assembly
B124C Automatic High Beam Camera Malfunction in inner rear view mirror assembly (automatic high beam sensor)

  • CAN communication system

  • Inner rear view mirror assembly

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

PROCEDURE


  1. CHECK FOR DTC (AUTOMATIC HIGH BEAM SYSTEM)


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      Result
      Result Proceed to
      DTCs B124A and B124C are not output A
      DTC B124A and/or B124C is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE INNER REAR VIEW MIRROR ASSEMBLY Click here