Network Message Charts
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
Module Network Input Messages Powertrain Control Module (PCM)
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| HVAC A/C request | HVAC control module | This message requests the A/C compressor to be engaged. |
| HVAC evaporative temperature | HVAC control module | This message contains the evaporator temperature. The PCM uses the evaporator temperature to determine the A/C compressor output. |
Module Network Input Messages HVAC control module
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| A/C clutch status | PCM | This message contains the status of the A/C compressor clutch. |
| Ambient air temperature | PCM | This message contains the filtered ambient air temperature information. |
The HVAC control module also includes:
- auxiliary climate controls, refer to Auxiliary Climate Control .
- a rear window defrost button, refer to Glass, Frames and Mechanisms .
- heated/cooled seat controls, refer to Seating .