Powertrain Control Module (PCM)

U0101-LOST COMMUNICATION WITH TCM





For a complete wiring diagram, consult the Wiring Information.

- When Monitored:
Ignition run time is greater than one second. Battery voltage between 9 and 16 volts. Engine run time greater than three seconds.

- Set Condition:
The Powertrain Control Module (PCM) doesn't receive a Bus Message from the Transmission Control Module for seven consecutive seconds. One trip failure. The circuit is continuously monitored. Two Trip fault.





ACTIVE DTC
1. Start the engine.
2. With a scan tool, select View DTCs.

NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, because this fault is set after two failed trips.

Is the DTC Active or Pending at this time?

Yes

- Perform the U0101-Lost Communication with TCM diagnostic procedure. Totally Integrated Power Module (TIPM)

No

- Perform the Stored Lost Communication DTCs diagnostic procedure. Stored Lost Communication DTCs