DTC U1000: CAN Communication Failure (Message Registry) [12/2017 - 10/2023]: Procedure

CHECK FOR DTC

Clear the DTCs.
Refer to DTC CHECK / CLEAR [12/2017 - 09/2018] , or refer to DTC CHECK / CLEAR [09/2018 - 10/2020] , or refer to DTC CHECK / CLEAR [10/2020 - 10/2023]

Body Electrical > AFS > Clear DTCs

Body Electrical > AFS (Sub) > Clear DTCs
Turn the engine switch on (IG).

Check for DTCs.

Refer to DTC CHECK / CLEAR [12/2017 - 09/2018] , or refer to DTC CHECK / CLEAR [09/2018 - 10/2020] , or refer to DTC CHECK / CLEAR [10/2020 - 10/2023]

Body Electrical > Passenger Seat > Trouble Codes

Body Electrical > AFS (Sub) > Trouble Codes

OK

DTC U1000 is not output.

Result

Result	Proceed to
OK	A
NG (DTC output from headlight ECU sub-assembly LH)	B
NG (DTC output from headlight ECU sub-assembly RH)	C

Result:

A

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 11/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]

Result:

B

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to REMOVAL [12/2017 - 10/2020] , or refer to REMOVAL [10/2020 - ]

Result:

C

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to REMOVAL [12/2017 - 10/2020] , or refer to REMOVAL [10/2020 - ]