DTC U1000: CAN Communication Failure (Message Registry) [02/2019 - 12/2021]: Procedure
WARNING: This page is about a different car, the 2021 Toyota RAV4, 2020 Toyota RAV4, and 2019 Toyota RAV4. 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 or AFS (Sub) / Clear DTCs.
- Clear the DTCs.
Body Electrical > AFS > Clear DTCs
Body Electrical > AFS (Sub) > 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 or AFS (Sub) / Trouble Codes.
- Check for DTCs.
Body Electrical > AFS > 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 [11/2018 - ]
Result:
B
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to REMOVAL [02/2019 - 12/2021]
Result:
C
REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to REMOVAL [02/2019 - 12/2021]