Electronic Automatic Temperature Control (EATC): Notes
WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
The HVAC module analyzes input from the following major sources:
- Temperature, airflow direction, blower, A/C and RECIRC selection (made by the vehicle occupants)
- In-vehicle temperature sensor
- Ambient air temperature sensor
- Solar radiation sensor (sunload sensor)
- Vehicle speed
- Engine coolant temperature
Using these inputs, the HVAC module determines the correct conditions for the following outputs:
- A/C compressor operation
- Blower motor speed
- RH and LH temperature blend door positions
- Defrost/panel/floor airflow mode door positions
- Air inlet mode door position