LIGHTING 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 detects malfunctions in the inner rear view mirror.

DTC Code DTC Detection Condition Trouble Area
B124A Malfunction in inner rear view mirror assembly (automatic high beam sensor) Inner rear view mirror assembly (automatic high beam sensor)
B124C Malfunction in inner rear view mirror assembly (automatic high beam sensor) camera portion Inner rear view mirror assembly (automatic high beam sensor)

WIRING DIAGRAM

A01FR0AE02

INSPECTION PROCEDURE

Note

First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this DTC.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B124A or B124C output does not occur.

    NG

    REPLACE INNER REAR VIEW MIRROR ASSEMBLY (AUTOMATIC HIGH BEAM SENSOR) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here