DTC U0100 - Lost Communication With Electronic Control Module (ECM)/Powertrain Control Module (PCM) A

DTC DESCRIPTION U0100 - LOST COMMUNICATION WITH ELECTRONIC CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM) A

Description: The SOBDMC continuously monitors the controller area network (CAN) for messages from the PCM. This DTC sets when the SOBDMC does not receive the PCM message within the defined amount of time.
Possible Causes: Module communications network concerns PCM communications network concerns Low voltage system concerns
Diagnostic Aids:
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST QD .