DTC B124C: Automatic High Beam Camera [12/2012 - 10/2015]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [12/2012 - 10/2015] .

   Body Electrical > Main Body > Clear DTCs 

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [12/2012 - 10/2015]

   Body Electrical > Main Body > Trouble Codes 

   Results	Proceed to
   	DTC B124C is not output
   	DTC B124C is output

Result: 

DTC B124C is not output 

USE SIMULATION METHOD TO CHECK. 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2012 - 11/2013] .

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2013 - 10/2015] .

Result: 

DTC B124C is output 

See step  2

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [12/2012 - 10/2015] .

   Chassis > Lane Departure Alert > Clear DTCs 

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [12/2012 - 10/2015] .

   Chassis > Lane Departure Alert > Trouble Codes 

   Results	Proceed to
   	Lane departure alert system DTCs are not output
   	Lane departure alert system DTCs are output

Result: 

Lane departure alert system DTCs are output 

GO TO LANE DEPARTURE ALERT SYSTEM. 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2012 - 10/2015] .

Result: 

Lane departure alert system DTCs are not output 

See step  3

1. Temporarily replace the lane departure warning camera with a new or normally functioning one.

   Refer to REMOVAL [12/2012 - 10/2015]

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [12/2012 - 10/2015]

   Body Electrical > Main Body > Trouble Codes 

   Results	Proceed to
   	DTC B124C is not output
   	DTC B124C is output

Result: 

DTC B124C is not output 

END (LANE DEPARTURE WARNING CAMERA WAS DEFECTIVE) 

Result: 

DTC B124C is output 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). 

Refer to REMOVAL [12/2012 - ] .