Drivetrain Control Module (DTCM)

U0001-CAN C BUS





For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Drive Train Control Module (DTCM) communicates with other controllers over the CAN C bus. The DTCM continuously monitors the bus activity and receives the messages it needs. The CAN C bus is also used to communicate DTCM MIL status to the Engine Controller, therefor if the Engine Controller is unable to communicate with the DTCM, the Engine Controller will light the MIL.

- When Monitored:Ignition run time is greater than one second. Battery voltage between 10 and 16 volts. Engine run time greater than three seconds.
- Set Condition:
The Powertrain Control Module (PCM) loses communication over the CAN C Bus circuit. The circuit is continuously monitored. One Trip fault.





ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, select View TIPM DTCs.

Is the DTC Active at this time?

Yes

- Totally Integrated Power Module (TIPM) Perform the U0001-CAN C Bus diagnostic procedure.

No

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