Network Message Chart
Module Network Input Messages - Powertrain Control Module (PCM)
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Air Conditioning (A/C) request | HVAC control module | This message requests the A/C compressor to be engaged. |
| Ambient air temperature | IPC | This message contains raw value from the Ambient Air Temperature (AAT) sensor. |
| Evaporator temperature | IPC | This message contains the evaporator temperature. The PCM uses the evaporator temperature to cycle the A/C compressor clutch. |
Module Network Input Messages - Heating, Ventilation, and Air Conditioning (HVAC) Control Module
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Ambient air temperature | IPC | This message contains raw value from the Ambient Air Temperature (AAT) sensor. |
| Evaporator temperature | IPC | This message contains the evaporator temperature information. |