DTC U0101-87: Lost Communication with TCM Missing Message [08/2020 - ]: Procedure
WARNING: This page is about a different car, the 2021 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC U0101-87)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: System Select / Health Check.
- Read the DTCs.
Result
Result Proceed to DTC U0101-87 is output A DTC U0101-87 and other DTCs are output B HINT:
If any DTCs other than U0101-87 are output, troubleshoot those DTCs first.
Result:
A
REPLACE ECM. Refer to REMOVAL [08/2020 - ]
Result:
B
GO TO DTC CHART