System Airflow Description: Defrost

Fig 1: Air Flow With DEFROST Selected

Courtesy of FORD MOTOR CO.

When DEFROST is selected:

• The air inlet door vacuum control motor is at no vacuum, admitting only outside air into the passenger compartment.
• The panel door and floor/defrost door vacuum control motors are at no vacuum, directing airflow to the defroster duct and the side window demisters.
• The A/C request button will be enabled. The A/C compressor will operate automatically if the outside temperature is above approximately 6°C (43°F). In addition, the A/C compressor will operate and the indicator will be illuminated if the A/C request button is selected and the outside temperature is above approximately 6°C (43°F).
• The blower motor is on.
• The auxiliary blower motor (if equipped) is enabled.