Powertrain Control Module (PCM)

U0001-CAN C BUS
For a complete wiring diagram, refer to the Wiring Information.
- When Monitored:
Continuously with the ignition on. Battery voltage between 9.0 and 16.0 Volts. Engine run time greater than three seconds.

- Set Condition:
The Powertrain Control Module (PCM) loses communication over the CAN C Bus circuit.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.
ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, read TIPM DTCs.

Is the DTC active at this time?

Yes

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

No

- Perform the Stored Lost Communication DTCs diagnostic procedure.