Purpose
The blower unit switches between fresh air and recirculated air (FRESH/REC) and sends airflow into the cabin.
Function
Air is blown by the blower motor in the blower unit.
The blower unit switches the air intake port to FRESH or REC based on the position of the air intake door.
Construction
The blower motor consists of the following parts:
Blower motor
Air intake door
Air intake actuator
Air filter

Operation
When the blower motor rotates, air is taken in from the outside of the vehicle or the cabin.
The air taken in flows in the fresh air direction or recirculate direction according to the operation of the air intake link. The air intake port changes by the movement of the air intake door.

Fail-safe
Function not equipped.
Basic System
Blower Unit Disassembly/AssemblyAudio Control Switch Operation
When the audio unit is turned on, operation of the audio unit from the steering
wheel is possible.
NOTE
Because the audio unit will be turned off under the following conditions,
the switches will be inoperable.
• When the ignition is switched off.
• When the power button on the audio uni ...
Expansion Valve
Purpose
The expansion valve atomizes liquid refrigerant to facilitate cooling of
the evaporator.
Function
The expansion valve reduces the pressure of liquid refrigerant rapidly to
facilitate vaporization of the atomized refrigerant at the evaporator, and adjusts
the refr ...
Light Bulbs
WARNING
Do not replace the xenon fusion bulbs yourself:
Replacing the xenon fusion bulbs yourself is dangerous. Because the xenon fusion
bulbs require high voltage, you could receive an electric shock if the bulbs are
handled incorrectly. Consult an Authorized Mazda Dealer when the replaceme ...