Blower Air Flow Diagram

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

The air passes the blower unit, cooling unit, and heater unit then blows from each vent into the passenger compartment.
When the heater is turned on, the air that passed from the blower unit is cooled, dehumidified and filtered by the evaporator, then heated by the heater core.
The ventilation of the rear seats is improved using rear heat ducts.
The side windows can be prevented from becoming cloudy by ventilation from the side demister.
REHEAT AIR MIX TYPE

Fig 1: Identifying Reheat Air Mix Flow
Courtesy of MAZDA MOTORS CORP.