Dual-Zone Electronic Automatic Temperature Control (EATC): Notes
The dual-zone Electronic Automatic Temperature Control (EATC) module analyzes input from the following sources:
- Temperature, airflow mode, blower, A/C and RECIRC selection (made by the vehicle occupants)
- In-vehicle temperature sensor
- Ambient temperature sensor
- Solar radiation sensor (sunload sensor)
- Evaporator temperature 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
- Temperature blend door position
- Airflow mode door position
- Air inlet door position