B124A

LIGHTING: LIGHTING SYSTEM: B124A: Automatic High Beam Mirror
B124A - Automatic High Beam Mirror

DESCRIPTION

This DTC is stored when the main body ECU detects malfunctions in the inner rear view mirror assembly.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
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

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B124A is not output.

NG -- REPLACE INNER REAR VIEW MIRROR ASSEMBLY Removal

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting