Dual Automatic Temperature Control

The dual-zone electronic automatic temperature control (EATC) module analyzes input from the following major sources:

• Temperature, airflow direction and blower selection (made by the vehicle occupants)
• In-vehicle temperature
• 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
• Floor airflow door position
• Defrost airflow door position
• Air inlet door position