Control System Logic: Floor/Defrost

When FLOOR/DEFROST mode is selected:

• the mode doors direct airflow to the floor duct, the defroster duct and the side window demisters.
• the recirculated air request button can be enabled. If the recirculated air request button is selected (indicator on), the air inlet door closes off outside air from entering the passenger compartment. If the recirculated air request button is not selected (indicator off), the air inlet door admits only outside air into the passenger compartment. When recirculated air is selected, the air inlet mode door remains in recirculated air mode for 5 minutes. After 5 minutes, the recirculated air indicator turns off and the air inlet mode door changes to fresh air mode.
• blended air temperature is available. The airflow temperature can only be cooled below the outside air temperature when the A/C is commanded on (if equipped).
• the A/C request button (if equipped) indicates the last status and the indicator can be toggled. To reduce fogging, the A/C compressor operates automatically, regardless of indicator status, if the outside temperature is above approximately -6.6 °C (20 °F).
• the blower motor is on.