Airflow Control (HVAC Module)
WARNING: This page is about a different car, the 2002 Saturn LW300, 2002 Saturn LW200, 2002 Saturn L300, 2002 Saturn L200, and 2002 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.
The HVAC module consists of a recirculation motor, a mode motor, blower motor and fan, a blower motor resistor card, a heater core, and an evaporator core. Operations of these assemblies are controlled by knobs and switches on the HVAC control head.
Distribution of air is controlled by the mode knob and buttons on the HVAC control head. Various positions of the mode knob and buttons direct cooled, heated, blended, outside, or inside air through the air ducts. Flow of air during various modes of operations is as follows:
- Face - Instrument panel outlets.
- Face and Feet - Instrument panel outlets and floor outlets.
- Feet - Floor outlets with a small amount of bleed air to defroster.
- Feet/Defrost - Floor outlets and defroster with slight bleed to instrument panel outlets.
- Top - Defroster ducts with small amount of air to side window defoggers.