DTC B242C: Right Headlight ECU Malfunction; DTC B242D: Left Headlight ECU Malfunction [09/2020 - ]: Procedure
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- CLEAR DTC
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
- Clear the DTCs.
Body Electrical > HL AutoLeveling > Clear DTCs
Result
Proceed to NEXT
Result:
NEXT
See step 2
- CHECK FOR DTC
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Wait for at least maximum 15 minutes.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
- Check for DTCs.
Body Electrical > HL AutoLeveling > Trouble Codes
OK
DTC B242C and B242D are not output.
Result
Result Proceed to OK A NG (DTC B242C is output) B NG (DTC B242D is output) C
Result:
A
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - 11/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 09/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2022 - ]
Result:
B
REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to REMOVAL [09/2020 - ]
Result:
C
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to REMOVAL [09/2020 - ]