DTC B243D: Left Low Beam Fan Malfunction; DTC B243E: Right Low Beam Fan Malfunction [10/2015 - 08/2019]: Procedure
- CLEAR DTC
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > HL AutoLeveling > Clear DTCs
- Clear the DTCs.
- for Triple Beam Headlight, for Single Beam Headlight with AFS (Adaptive Front-lighting System):
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > AFS > Clear DTCs
Result
Proceed to NEXT - Clear the DTCs.
Result:
NEXT
See step 2
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- CHECK FOR DTC
- Turn the power switch on (IG).
- Operate the light control switch to turn on the low beam headlights and wait 2 minutes.
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- Check for DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > HL AutoLeveling > Trouble Codes
OK
DTC B243D and B243E are not output.
- Check for DTCs.
- for Triple Beam Headlight, for Single Beam Headlight with AFS (Adaptive Front-lighting System):
- Check for DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > AFS > Trouble Codes
OK
DTC B243D and B243E are not output.
Result
Result Proceed to OK A NG (DTC B243D is output) B NG (DTC B243E is output) C - Check for DTCs.
Result:
A
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 08/2016] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - 12/2017] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 03/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [03/2018 - 08/2019]
Result:
C
See step 6
Result:
B
See step 3
- CHECK HEADLIGHT UNIT LH
- Interchange the headlight unit LH with RH and connect the connectors to them.
for Single Beam Headlight: Refer to DISASSEMBLY [10/2015 - 08/2019]
for Triple Beam Headlight: Refer to DISASSEMBLY [10/2015 - 08/2019]
Result
Proceed to NEXT
Result:
NEXT
See step 4
- Interchange the headlight unit LH with RH and connect the connectors to them.
- CLEAR DTC
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > HL AutoLeveling > Clear DTCs
- Clear the DTCs.
- for Triple Beam Headlight, for Single Beam Headlight with AFS (Adaptive Front-lighting System):
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > AFS > Clear DTCs
Result
Proceed to NEXT - Clear the DTCs.
Result:
NEXT
See step 5
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- CHECK FOR DTC
- Turn the power switch on (IG).
- Operate the light control switch to turn on the low beam headlights and wait 2 minutes.
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- Check for DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > HL AutoLeveling > Trouble Codes
- Check for DTCs.
- for Triple Beam Headlight, for Single Beam Headlight with AFS (Adaptive Front-lighting System):
- Check for DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > AFS > Trouble Codes
Result
Result Proceed to DTC B243D is output A DTC B243E is output B - Check for DTCs.
Result:
A
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to REMOVAL [10/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019]
Result:
B
REPLACE HEADLIGHT ASSEMBLY LH
for Single Beam Headlight: Refer to REMOVAL [10/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019]
for Triple Beam Headlight: Refer to REMOVAL [10/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019]
- CHECK HEADLIGHT UNIT RH
- Interchange the headlight unit RH with LH and connect the connectors to them.
for Single Beam Headlight: Refer to DISASSEMBLY [10/2015 - 08/2019]
for Triple Beam Headlight: Refer to DISASSEMBLY [10/2015 - 08/2019]
Result
Proceed to NEXT
Result:
NEXT
See step 7
- Interchange the headlight unit RH with LH and connect the connectors to them.
- CLEAR DTC
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > HL AutoLeveling > Clear DTCs
- Clear the DTCs.
- for Triple Beam Headlight, for Single Beam Headlight with AFS (Adaptive Front-lighting System):
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > AFS > Clear DTCs
Result
Proceed to NEXT - Clear the DTCs.
Result:
NEXT
See step 8
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- CHECK FOR DTC
- Turn the power switch on (IG).
- Operate the light control switch to turn on the low beam headlights and wait 2 minutes.
- for Single Beam Headlight without AFS (Adaptive Front-lighting System):
- Check for DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > HL AutoLeveling > Trouble Codes
- Check for DTCs.
- for Triple Beam Headlight, for Single Beam Headlight with AFS (Adaptive Front-lighting System):
- Check for DTCs.
Refer to DTC CHECK / CLEAR [10/2015 - 08/2019]
Body Electrical > AFS > Trouble Codes
Result
Result Proceed to DTC B243E is output A DTC B243D is output B - Check for DTCs.
Result:
A
REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to REMOVAL [10/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019]
Result:
B
REPLACE HEADLIGHT ASSEMBLY RH
for Single Beam Headlight: Refer to REMOVAL [10/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019]
for Triple Beam Headlight: Refer to REMOVAL [10/2015 - 08/2016] , or refer to REMOVAL [08/2016 - 08/2019]