Dual-Zone Electronic Automatic Temperature Control
The dual-zone EATC module analyzes input from the following major sources:
- temperature, function and blower selection (made by the vehicle occupants)
- in-vehicle temperature
- in-vehicle humidity (Navigator only)
- ambient temperature
- sunload
- vehicle speed
- engine coolant temperature
Using these inputs, the dual-zone EATC module determines the correct conditions for the following outputs:
- A/C compressor operation
- blower speed
- LH side temperature blend door position
- RH side temperature blend door position
- panel airflow door position
- airflow door positions
- coolant control valve