Dual Automatic Temperature Control (DATC) System
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For the passenger side temperature setting on hybrid vehicles equipped with dual-zone Electronic Automatic Temperature Control (EATC) and a Front Controls Interface Module (FCIM) built on or after 04/08/2009 to be functional, a passenger must be seated in the front passenger seat. If the front passenger seat is not occupied, the HVAC module will control the system based only on the driver side temperature setting. The HVAC module receives a Medium Speed Controller Area Network (MS-CAN) signal from the FCIM
to indicate if the front passenger seat is occupied.
The DATC system maintains the selected vehicle interior temperature by heating and/or cooling the air.
- During A/C operation, the system also reduces the relative humidity of the air.
- The driver may override the automatic mode of operation.
- The temperature control setting determines the desired air temperature.
- The blower motor control override button varies the blower motor speed.
- The driver side and passenger side temperature settings can be individually controlled.
The DATC system operation is determined by the settings on the climate controls. The HVAC system automatically maintains a selected temperature for vehicle interior comfort. To control the various functions, the DATC system is composed of the following:
- HVAC module
- Front Controls Interface Module (FCIM) (Fusion and Milan with navigation and all MKZ)
- Audio Control Module (ACM) (all vehicles equipped with navigation systems)
- Blower motor speed control
- Defrost/panel/floor mode door actuator
- Air inlet mode door actuator
- LH and RH temperature blend door actuators
- In-vehicle temperature sensor
- Ambient air temperature sensor
- Sunload sensor
- Evaporator temperature sensor
When the DATC system is set to AUTO:
- the air distribution direction, blower motor speed and A/C compressor operation are automatically controlled based on the temperature(s) selected.
The DATC system manual override settings:
- allow the air distribution direction to be manually selected.
- allow the blower motor speed to be manually selected.
- allow recirculation mode to be manually selected in all modes except DEFROST. The A/C request can be cancelled by pressing the A/C request switch, turning the indicator OFF.
- allow A/C compressor operation to be manually selected except in DEFROST.