Operating Modes
"OFF" MODEWhen the mode control knob is in the "OFF" position, no electrical power is supplied to the blower motor. A limited flow of air, caused by movement of the vehicle, may come from the defrost outlet and the floor outlets. This is the only mode in which the blower motor will not operate.
VENT MODE
With the mode control knob in the vent position, outside air is delivered through the instrument panel outlets to ventilate the vehicle. If preferred, the air may be warmed by setting the temperature control knob to the desired temperature.
BI-LEVEL MODE
With the mode control knob in the bi-level position, electrical power is supplied to the blower motor Outside air is drawn in and heated (depending on the position of the temperature control knob). Then the airflow is split between the instrument panel outlets and the floor outlets. Blower motor speed may be varied.
HEATER MODE
With the mode control knob in the heater position, outside air is drawn into the vehicle, heated (depending on the position of the temperature control knob) and directed to the floor air outlets. A small amount of air Is routed to the windshield through the defrost outlet.
Blower motor speed may be varied as other operating modes
This mode is the normal selection for cold weather operation unless the windshield must be cleared of heavy frost.
BLEND MODE
With the mode control knob in blend position, outside air is drawn into the vehicle, heated (depending on the position of the temperature control knob) and split between the defrost outlet and the floor air outlets.
DEFROST MODE
With the mode control knob in the defrost position, outside air is drawn in the vehicle, heated (depending on the position of the temperature control knob) and directed to the defrost outlet. A small amount of air is routed to the floor air outlets. Blower motor speed may be varied.
SIDE WINDOW DEFOGGING
In all modes except "OFF" and vent, air is supplied to the side window defrost outlets, located at the end of the instrument panel upper trim pad.