Pinpoint Test W : U0137:87: Notes
Refer to Wiring Diagram Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
The BCM communicates with the TBM through the GWM. REFER to: Communications Network - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0137:87 | Lost Communication With Trailer Brake Control Module: Missing Message | A continuous memory DTC that sets in the BCM if messages received from the TBM are missing. |
Possible Sources
- Communication network concern
- Battery voltage concern
- TBM
- BCM