Dual Automatic Temperature Control

The dual automatic temperature control (DATC) module analyzes input from the following major sources:

• temperature, function and blower selection (made by the vehicle occupants)
• in-vehicle temperature
• ambient temperature
• sunload
• vehicle speed
• engine coolant temperature

  Using these inputs, the DATC 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