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Home >> Ford >> 1991 >> Tempo Base, ATX >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heater System >> Operation >> System Controls >> Mode Control Buttons

Mode Control Buttons

Mode control buttons operate a vacuum selector switch. Mode control lever interrupts power to blower when in OFF position. Buttons control direction of airflow in system by positioning and actuating doors and valves.