AUTOMATIC HIGH BEAM SYSTEM, Diagnostic DTC:B124A and B124C

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

DESCRIPTION

These DTCs are stored when the main body ECU (multiplex network body ECU) detects malfunctions 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

Inner rear view mirror assembly

B124C

Automatic High Beam Camera

Malfunction in camera (inner rear view mirror assembly)

Inner rear view mirror assembly

WIRING DIAGRAM

E261658E02

CAUTION / NOTICE / HINT

Note:

  • First perform the communication function inspections in Diagnosis System to confirm that there are no CAN communication malfunctions before performing the following inspection.

    Click hereClick hereClick here

  • Inspect the inner rear view mirror assembly before performing the following procedure.

    Click here

PROCEDURE

  1. CHECK FOR DTC

    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

    DTC B124A and B124C are not output.

    A

    DTC B124A or B124C is output.

    B
    A

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick here

    B

    REPLACE INNER REAR VIEW MIRROR ASSEMBLY

    Click here