Drivetrain Control Module (DTCM)

U0101-LOST COMMUNICATION WITH TCM





For a complete wiring diagram, consult the Wiring Information.

- When Monitored:

- With the ignition on.
- Battery voltage between 10 and 16 volts.
- Ignition Off Draw (IOD) fuse installed.
- Totally Integrated Power Module (TIPM) is configured correctly.
- Set Condition:
Bus messages not received from the Transmission Control Module (TCM) for approximately 500ms.





VERIFY DTC IS ACTIVE
1. Ignition on, engine not running.
2. With a scan tool, read DTCs.

Is the DTC Active at this time?

Yes

- Perform the appropriate diagnostic procedure. . Totally Integrated Power Module (TIPM)

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. . Intermittent Condition Test