System Airflow Description

SYSTEM AIRFLOW DESCRIPTION - EMTC

Max A/C
When MAX A/C is selected:
- The air inlet door actuator closes off outside air and admits only recirculated air.
- The recirc button is disabled and the indicator is illuminated.
- The floor/defrost/panel door directs airflow to the instrument panel A/C registers.
- Blended air temperature is available.
- The A/C request button is illuminated and will be disabled.
- The A/C compressor will operate if the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

PANEL
When PANEL is selected:
- The recirc request button is enabled. If the recirc request button is selected (indicator ON), the air inlet door actuator closes off outside air from entering the passenger compartment. If the recirc request button is not selected (indicator OFF), the air inlet door actuator admits only outside air into the passenger compartment.
- The floor/defrost/panel door directs airflow to the instrument panel A/C registers.
- Blended air temperature is available.
- The A/C request button is enabled. The A/C compressor can operate and the indicator will illuminate if the A/C request button is selected and the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

PANEL/FLOOR
When PANEL/FLOOR is selected:
- The recirc request button is enabled. If the recirc request button is selected (indicator ON), the air inlet door actuator closes off outside air from entering the passenger compartment. If the recirc request button is not selected (indicator OFF), the air inlet door actuator admits only outside air into the passenger compartment.
- The floor/defrost/panel door directs airflow to the floor duct and the instrument panel registers. A small amount of airflow from the side window demisters and defrost duct will be present.
- Blended air temperature is available.
- The A/C request button is enabled. The A/C compressor can operate and the indicator will illuminate if the A/C request button is selected and the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

OFF
When OFF is selected:
- The recirc request button is disabled.
- The air inlet door actuator closes off outside air and admits only recirculated air.
- The A/C request button is disabled.
- The blower motor is OFF.

FLOOR
When FLOOR is selected:
- The recirc request button is enabled. If the recirc request button is selected (indicator ON), the air inlet door actuator closes off outside air from entering the passenger compartment. If the recirc request button is not selected (indicator OFF), the air inlet door actuator admits only outside air into the passenger compartment.
- The floor/defrost/panel door directs airflow to the floor duct. A small amount of airflow from the defroster duct and side window demisters will be present.
- Blended air temperature is available.
- The A/C request button is enabled. The A/C compressor can operate and the indicator will illuminate if the A/C request button is selected and the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

FLOOR/DEFROST
When FLOOR/DEFROST is selected:
- The recirc request button is enabled. If the recirc request button is selected (indicator ON), the air inlet door actuator closes off outside air from entering the passenger compartment. If the recirc request button is not selected (indicator OFF), the air inlet door actuator admits only outside air into the passenger compartment.
- The floor/defrost/panel door directs airflow to the floor duct, the defroster duct and the side window demisters.
- Blended air temperature is available.
- The A/C request button and the indicator can be toggled. To reduce fogging, the A/C compressor will operate automatically, regardless of indicator status, if the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

DEFROST
When DEFROST is selected:
- The air inlet door actuator opens, admitting only outside air into the passenger compartment.
- The floor/defrost/panel door directs airflow to the defroster duct and side window demisters. A small amount of airflow from the floor duct will be present.
- Blended air temperature is available.
- The A/C request button and the indicator can be toggled. To reduce fogging, the A/C compressor will operate automatically, regardless of indicator status, if the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

SYSTEM AIRFLOW DESCRIPTION - DATC/EATC

AUTO
When AUTO is selected:
- The temperature control setting is manually set to the desired setting.
- The air inlet door actuator is automatically controlled by the HVAC module - EATC or HVAC module - DATC, based on the temperature setting.
- The mode door actuators are automatically controlled by the HVAC module - EATC or HVAC module - DATC based on the temperature setting.
- The A/C compressor is automatically controlled by the HVAC module - EATC or HVAC module - DATC based on the temperature setting. The A/C compressor will not operate if the outside temperature is below approximately 6°C (43°F).
- the A/C request is controlled by the HVAC module - EATC or HVAC module - DATC based on the temperature settings. The A/C compressor will not operate if the outside air temperature is below 6°C (43°F). The A/C indicator automatically turns ON when the outside air temperature rises above 14°C (58°F) and automatically turns OFF when the outside air temperature falls below 11°C (51°F).
- The A/C request button and the RECIRC request button can be manually selected. When manually selected the A/C indicator will not change state with changing outside air temperature.
- The blower motor is ON. The blower motor speed is automatically controlled by the HVAC module - EATC or HVAC module - DATC based on the temperature setting, but can be manually overridden.

OFF
When OFF is selected:
- The recirc request button is disabled.
- The air inlet door actuator closes off outside air and admits only recirculated air.
- The floor/defrost/panel door actuator is in the DEFROST position.
- The A/C request button is disabled.
- The blower motor is OFF.

PANEL
When PANEL is selected:
- The recirc request button is enabled. If the recirc request button is selected (indicator ON), the air inlet door actuator closes off outside air from entering the passenger compartment. If the recirc request button is not selected (indicator OFF), the air inlet door actuator admits only outside air into the passenger compartment.
- The floor/defrost/panel door directs airflow to the instrument panel A/C registers.
- Blended air temperature is available. Only when A/C compressor operation has been selected by pressing the A/C request button (indicator ON), can the airflow temperature be cooled below the outside air temperature.
- The A/C request button is enabled. The A/C compressor may operate and the indicator will illuminate if the A/C request button is selected and the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

PANEL/FLOOR
When PANEL/FLOOR is selected:
- The recirc request button is enabled. If the recirc request button is selected (indicator ON), the air inlet door actuator closes off outside air from entering the passenger compartment. If the recirc request button is not selected (indicator OFF), the air inlet door actuator admits only outside air into the passenger compartment.
- The floor/defrost/panel door directs airflow to the floor duct and the instrument panel A/C registers. A small amount of airflow from the side window demisters and defrost duct will be present.
- Blended air temperature is available. Only when A/C compressor operation has been selected by pressing the A/C request button (indicator ON), can the airflow temperature be cooled below the outside air temperature.
- The A/C request button is enabled. The A/C compressor may operate and the indicator will illuminate if the A/C request button is selected and the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

FLOOR
When FLOOR is selected:
- The recirc request button is enabled. If the recirc request button is selected (indicator ON), the air inlet door actuator closes off outside air from entering the passenger compartment. If the recirc request button is not selected (indicator OFF), the air inlet door actuator admits only outside air into the passenger compartment. The recirc function may time out and the air inlet door will change to the outside air position.
- The floor/defrost/panel door directs airflow to the floor duct. A small amount of airflow from the defroster duct and side window demisters will be present.
- Blended air temperature is available. Only when A/C compressor operation has been selected by pressing the A/C request button (indicator ON), can the airflow temperature be cooled below the outside air temperature.
- The A/C request button is enabled. The A/C compressor may operate and the indicator will illuminate if the A/C request button is selected and the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

FLOOR/DEFROST
When FLOOR/DEFROST is selected:
- The recirc request button is enabled. If the recirc request button is selected (indicator ON), the air inlet door actuator closes off outside air from entering the passenger compartment. If the recirc request button is not selected (indicator OFF), the air inlet door actuator admits only outside air into the passenger compartment. The recirc function may time out and the air inlet door will change to the outside air position.
- The floor/defrost/panel door directs airflow to the floor duct, the defroster duct and the side window demisters.
- Blended air temperature is available.
- The A/C request button is enabled. The A/C compressor will operate automatically and the indicator will illuminate if the A/C request button is selected and the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.

DEFROST
When DEFROST is selected:
- The recirc request button and indicator is disabled. Regardless of button and indicator status, the air inlet door actuator admits only outside air into the passenger compartment.
- The floor/defrost/panel door directs airflow to the defroster duct and side window demisters. A small amount of airflow from the floor duct will be present.
- Blended air temperature is available.
- The A/C request button will indicate the last status and the indicator can be toggled. To reduce fogging, the A/C compressor will operate automatically, regardless of indicator status, if the outside temperature is above approximately 6°C (43°F).
- The blower motor is ON.