Dual-Zone Electronic Automatic Temperature Control (EATC): Notes
WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The HVAC module analyzes input from the following sources:
- Temperature, airflow direction, blower, A/C and RECIRC selection (made by the vehicle occupants)
- In-vehicle temperature sensor
- Ambient Air Temperature (AAT) sensor
- Autolamp/Sunload sensor (solar radiation sensor)
- Vehicle speed
- Engine coolant temperature
Using these inputs, the dual-zone HVAC module determines the correct conditions for the following outputs:
- A/C compressor operation
- Blower speed
- RH and LH temperature blend door positions
- Defrost/panel/floor airflow mode door position
- Air inlet door position