DTC U1000: CAN Communication Failure (Message Registry) [12/2018 -]: Procedure
WARNING: This page is about a different car, the 2022 Toyota Prius, 2021 Toyota Prius, 2020 Toyota Prius, and 2019 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
- CLEAR DTC
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / AFS / Trouble Codes.
- Clear the DTCs.
Body Electrical > AFS > Clear DTCs
Result
Proceed to NEXT
Result:
NEXT
See step 2
- CHECK FOR DTC
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / AFS / Trouble Codes.
- Check for DTCs.
Body Electrical > AFS > Trouble Codes
OK
DTC U1000 is not output.
Result
Proceed to OK NG
Result:
OK
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2018 - 07/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - 06/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2021 -]
Result:
NG
REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to REMOVAL [12/2018 -]