DTC B242C: Right Headlight ECU Malfunction; DTC B242D: Left Headlight ECU Malfunction [06/2015 - ]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [06/2015 - 11/2018] , or refer to DTC CHECK / CLEAR [11/2018 - ]

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Turn the power switch on (IG).
2. Turn on the headlights using the headlight dimmer switch.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [06/2015 - 11/2018] , or refer to DTC CHECK / CLEAR [11/2018 - ]

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Result

   Result	Proceed to
   DTCs B242C and B242D are not output	A
   DTC B242C is output	B
   DTC B242D is output	C

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - 11/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

B 

REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH. Refer to  DISASSEMBLY [06/2015 - ] 

Result: 

C 

REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH. Refer to  DISASSEMBLY [06/2015 - ]