Dtc B124B Automatic High Beam System

Vehicle Exterior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Lighting (Ext). Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC

DTC B124B Automatic High Beam System


DESCRIPTION

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

DTC Code
DTC Detection Condition
Trouble Area
B124B
Malfunction in automatic high beam system
  1. CAN communication system
  2. Inner rear view mirror assembly

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.
1.CHECK FOR DTC

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B2415 is output
    		A
    DTC B2427 is output
    		B
    DTC B124B is output
    		C



B
GO TO B2427 (Click here)

C
REPLACE INNER REAR VIEW MIRROR ASSEMBLY (Click here)
A

GO TO B2415 (Click here)