DTC B124B: Automatic High Beam System [12/2019 - 11/2023]: Procedure

1. Perform the Health Check using the GTS.
2. Check for DTCs.

   Result

   Result	Proceed to
   Only DTC B124B is output	A
   DTC B124B and other DTCs are output	B

Result: 

B 

GO TO OTHER DTC CHART 

Result: 

A 

See step  2

1. Check if a dynamic radar cruise control system, lane control system, road sign assist system*, front radar sensor system or pre-collision system warning message is displayed on the multi-information display.

   Refer to DIAGNOSIS SYSTEM [12/2019 - ]

   OK

   No dynamic radar cruise control system, lane control system, road sign assist system*, front radar sensor system or pre-collision system warning messages are displayed.

   1. *: w/ Road Sign Assist System

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

NG 

GO TO FRONT CAMERA SYSTEM. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 09/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [09/2020 - ]