Electronic Automatic Temperature Control (EATC) System
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The electronic automatic temperature control (EATC) 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 air temperature.
- The blower motor control override buttons vary the blower motor speed.
The EATC system operation is determined by the settings on the HVAC module - EATC. The EATC system automatically maintains a selected temperature for vehicle interior comfort. The EATC system is composed of the HVAC module - EATC, blower motor speed control, airflow mode door actuator, air inlet mode door actuator, temperature blend door actuator, in-vehicle temperature sensor and solar radiation sensor to control the various functions.
When the HVAC module - EATC 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 HVAC module - EATC 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 FLOOR/DEFROST or DEFROST.
The HVAC module - EATC also includes:
- a rear window defrost button. Refer to GLASS, FRAMES AND MECHANISMS article.
- heated seat controls. Refer to SEATING article.