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
• In-vehicle humidity (Navigator only)
• 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
• Airflow door positions
• Coolant control valve