Powertrain

U0001-CAN C BUS

U0001 - Can C Bus:

WHEN MONITORED
Ignition run time is greater than 1 second. Battery voltage between 9 and 16 volts. Engine run time greater than 3 seconds.

SET CONDITION
The PCM loses communication over the CAN C Bus circuit. The circuit is continuously monitored. One Trip fault.

POSSIBLE CAUSES
- CAN C BUS open or shorted condition
- PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview

Refer to Body Control Systems for diagnostic procedures and for further possible causes.

Diagnostic Test

1. ACTIVE DTC

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

Q: Is the DTC active at this time?

YES: Refer to Body Control Systems for diagnostic procedures and for further possible causes.
NO: Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Component Tests and General Diagnostics
Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test