Temperature Control
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
The temperature control determines the amount of air flow to the heater core which regulates the temperature of the air entering the passenger compartment. A cable connects the control to the air flow door that is located in the heater case. When the temperature control is moved to the coldest position, the air mix door closes blocking the flow of air to the heater core. When the temperature control is moved to the hottest position, the air mix door opens fully allowing the air to flow through the heater core. Moving the temperature control between the coldest and the hottest positions allows the operator to adjust the passenger compartment temperature to the desired level.