Drivetrain Control Module (DTCM)

U0001-CAN C BUS

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

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, therefore if the engine controller is unable to communicate with the DTCM, the engine controller lights the MIL.

- When Monitored:
The ignition run time is greater than one second. The battery voltage between 10 volts and 16 Volts and engine run time greater than three seconds.

- Set Condition:
The Drive Train Control Module (DTCM) loses communication over the CAN C Bus circuit. The circuit is continuously monitored. One trip fault.





ACTIVE DTC

NOTE: For vehicle communication problems, use the scan tool to refer to the network review screen. This screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

1. Ignition on, engine not running.
2. With a scan tool, read DTCs.

Is the status Active for this DTC?

Yes

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

No

- The conditions that set this DTC are no longer present.