Pinpoint Test A : DTC (Diagnostic Trouble Code) U0100:00 Or U0101:00: Notes
Normal Operation and Fault Conditions
The BCM communicates with the PCM over the HS-CAN. The TCM is contained inside the PCM and cannot be serviced separately. REFER to: Communications Network - System Operation and Component Description
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | A continuous memory DTC that sets in the BCM if powertrain data messages received from the PCM over the HS-CAN are missing. |
| U0101:00 | Lost Communication with TCM: No Sub Type Information | A continuous memory DTC that sets in the BCM if powertrain data messages received from the PCM over the HS-CAN are missing. |
Possible Sources
- Communication network concern
- Battery voltage concern
- TCM (part of the PCM)
- BCM