Dual Automatic Temperature Control (DATC) System: Notes

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 HVAC module - DATC. The DATC 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 - DATC
• Blower motor speed control
• Mode door actuator
• Air inlet door actuator
• Driver and passenger temperature blend door actuators
• In-vehicle temperature sensor
• Ambient temperature sensor
• Solar radiation sensor
• Evaporator temperature sensor

When the 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 - 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 DEFROST.

• select the auxiliary blower motor speed.
• select the auxiliary airflow mode/temperature.

The HVAC module - DATC also includes:

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