DTC U0101-87: Lost Communication with TCM Missing Message [08/2021 - ]: Procedure
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- 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 [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]
Result:
B
GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ]