Dtc B124C Automatic High Beam Camera

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK VEHICLE TYPE

CHECK PRE-CRASH SAFETY SYSTEM

CHECK FOR DTC

DTC B124C Automatic High Beam Camera


DESCRIPTION

The main body ECU (multiplex network body ECU) detects automatic high beam system high beam illumination request signals from the forward recognition camera.

DTC No.
DTC Detection Condition
Trouble Area
B124C
Malfunction detected in forward recognition camera
Main body ECU (multiplex network body ECU)

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Lighting (Ext).Lighting System. Dtc B124C Automatic High Beam Camera


Land Cruiser. Urj200, 202 Grj200 Vdj200.Lighting (Ext).Lighting System. Dtc B124C Automatic High Beam Camera


INSPECTION PROCEDURE

NOTICE:
  1. for LHD with Central Gateway ECU
    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 (Click here).
  2. for LHD without Central Gateway ECU
    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 (Click here).
  3. for RHD with Central Gateway ECU
    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 (Click here).
  4. for RHD without Central Gateway ECU
    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 (Click here).
  5. w/ Pre-crash Safety System
    1. When replacing the forward recognition camera, replace it with a new one and be sure to initialize the settings. If an ECU which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and, as a result, a DTC may be output.
    2. When the forward recognition camera is replaced with a new one or it is removed, camera beam axis learning must be performed.
HINT:
  1. w/ Pre-crash Safety System
    This DTC is output simultaneously from the forward recognition camera when DTCs related to the items below are output.
    1. Wheel speed sensor malfunction
    2. Yaw rate sensor malfunction
    3. Steering angle sensor system malfunction
    4. CAN communication lost
1.CHECK VEHICLE TYPE

  1. Check the vehicle type.

    Result
    Result
    		Proceed to
    w/ Pre-crash Safety System
    		A
    w/o Pre-crash Safety System
    		B


B
Go to step 3
A


2.CHECK PRE-CRASH SAFETY SYSTEM

  1. Check that a pre-crash Safety system (Click here).


NEXT

END

3.CHECK FOR DTC

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    DTC B124C is output
    		A
    DTC B124C are not output
    		B


B
USE SIMULATION METHOD TO CHECK (Click here)
A

REPLACE INNER REAR VIEW MIRROR ASSEMBLY (Click here)