U0002 CAN C BUS OFF PERFORMANCE

For a complete wiring diagram Refer to Section 8W.

Theory of Operation

The NGC controller communicates over the CAN C BUS. The transmission controller continuously monitors BUS activity. The CAN C BUS is also used to communicate transmission MIL status to the Engine Controller. If the Engine Controller is unable to communicate with the Transmission Controller, a DTC will set and the Engine Controller will illuminate the MIL.

When Monitored:
Every 7 ms with:

1) Engine speed greater than 500 RPM.

2) Battery voltage between 10 and 16 volts.
Set Condition:
CAN C BUS messages are not received for 10 seconds.

Diagnose the U0002 CAN C BUS OFF PERFORMANCE as the U0001 CAN C BUS CIRCUIT test in 8-ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes.