LIGHTING SYSTEM, Diagnostic DTC:B124A

DTC Code DTC Name
B124A Automatic High Beam Mirror

DESCRIPTION

This DTC is stored when the main body ECU detects malfunctions in the inner rear view mirror assembly (automatic high beam sensor).

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)

WIRING DIAGRAM

A01GYRAE06

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 symptom.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTC Click here.

      OK
      DTC B124A is not output

    NG

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

    OK

    USE SIMULATION METHOD TO CHECK Click here