Pinpoint Test Q : U0256:87: Notes
Refer to Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
The BCM communicates with the APIM through the GWM. Refer to: Communications Network - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0256:87 | Lost Communication With Front Controls Interface Module "A" : Missing Message | A continuous memory DTC that sets in the BCM if messages received from the FCIM through the GWM are missing. |
Possible Sources
- Communication network concern
- Battery voltage concern
- GWM concern
- FCIM
- BCM