Pinpoint Test F : U0166:87: Notes
Refer to Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Communications Network - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| BCM U0166:87 | Lost Communication With Auxiliary Heater Control Module: Missing Message | A continuous memory DTC that sets in the BCM if messages from the RHVAC module through the GWM are missing. |
Possible Sources
- Communication network concern
- Battery voltage concern
- RHVAC module
- BCM