Electronic Automatic Temperature Control (EATC) and Dual Automatic Temperature Control (DATC) System

The EATC and 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 air temperature.
• The blower motor control override buttons vary the blower motor speed.
• The driver side and passenger side temperature settings can be individually controlled (DATC only).

The EATC and DATC system operation is determined by the settings on the HVAC module - EATC or HVAC module - DATC. The DATC/EATC system automatically maintains a selected temperature for vehicle interior comfort. The DATC/EATC system is composed of the HVAC module - EATC or HVAC module - DATC, blower motor speed control, mode door actuator, air inlet door actuator, temperature blend door actuator, in-vehicle temperature sensor and solar radiation sensor to control the various functions.

When the HVAC module - EATC or HVAC module - DATC 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 or HVAC module - DATC 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 DATC/EATC module also includes:

• a rear window DEFROST button, refer to GLASS, FRAMES AND MECHANISMS article.
• heated/cooled seat controls, refer to SEATING article.