B124B

LIGHTING: LIGHTING SYSTEM: B124B: Automatic High Beam System
B124B - Automatic High Beam System

DESCRIPTION

This DTC is stored when the main body ECU detects malfunctions in the automatic high beam system.





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 B124B is not output.

NG -- CHECK FOR DTC

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

2. CHECK FOR DTC

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

Result





D -- REPLACE INNER REAR VIEW MIRROR ASSEMBLY Removal

C -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting

B -- GO TO DTC B2415 B2415

A -- GO TO DTC B2414 B2414