LIGHTING (EXT) LIGHTING SYSTEM(w/o Headlight ECU) B124B Automatic High Beam System
DESCRIPTION
The main body ECU (multiplex network body ECU) determines the status of the automatic high beam system based on the automatic high beam system signal from the forward recognition camera.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Note |
|---|---|---|---|---|---|
| B124B | Automatic High Beam System | Malfunction in automatic high beam system | ·
Front camera system ·
Dynamic radar cruise control system ·
Lane control system ·
Road sign assist system ·
Pre-collision system ·
SFI system ·
Electronically controlled brake system ·
CAN communication system ·
Forward recognition camera ·
Main body ECU (multiplex network body ECU) |
Main Body | w/ Automatic High Beam System |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
-
The lighting system uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the automatic high beam system after confirming that the communication systems are functioning properly.
- HINT:
- If the forward recognition camera stores a DTC for a malfunction of any of the following, this DTC will be stored simultaneously.·
Speed sensor
·Yaw rate sensor
·Steering sensor (w/VSC)
·CAN communication system
PROCEDURE
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: System Select / Health Check.
Check for DTCs.
- Result:
Result Proceed to Only DTC B124B is output A DTC B124B and other DTCs are output B
A
B
Check if a dynamic radar cruise control system, lane control system, road sign assist system or pre-collision system warning message is displayed on the multi-information display.
- OK:
No dynamic radar cruise control system, lane control system, road sign assist system and pre-collision system warning messages are displayed.
- Result:
Proceed to OK NG
OK
for LHD:
for RHD:
NG