Control Assembly: Description and Operation

Air Source Select Switch

Press this button to select either Fresh Air Intake or CIRC (inside air circulation). There is an indicator light inside the button. This light indicates that the CIRC mode is "ON". Fresh Air Intake is the default setting for both DEFROST and FOOT/DEFROST.

Fan Control Switch

This switch controls the blower motor speed to regulate the amount of air delivered to the defrost, foot, and ventilation ducts:
1. L0
2. M1
3. M2
4. M3
5. HI

Temperature Control Switch

When the temperature control switch is in the "18 °C (65 °F)" position, the air mix door closes to block the air flow to the heater core.

When the temperature control switch is in the "32 °C (90 °F)" position, the air mix door opens to allow air to pass through the heater core and heat the passenger compartment.

Selecting the desired temperature will control the air flow through the heater core, allowing control of the cabin temperature.