Purpose
The refrigerant pressure sensor detects the refrigerant pressure in the refrigerant cycle.
Function
The refrigerant pressure sensor converts the detected refrigerant pressure to an electric signal and sends it to the PCM.

Construction
The refrigerant pressure sensor is installed on the cooler pipe.

A capacitance type refrigerant pressure sensor, which converts refrigerant pressure into a linear electric signal, has been adopted.
Consists of a pressure detecting part and signal processing part.
The pressure detecting part is a variable capacity condenser, which changes capacitance according to the pressure.
The signal processing part detects the capacitance of pressure detecting part, converts it to voltage, then outputs it to the climate control unit.

Operation
Capacitance type
There is a clearance between the movable ceramic diaphragm and the ceramic base, and each side has an electrode.
When pressure is applied from the ceramic diaphragm side, the ceramic diaphragm deforms, and the clearance between the electrodes changes. As a result, capacitance is changed and pressure is detected.

Fail-safe
Function not equipped.
Refrigerant Pressure Sensor Removal/Installation [Manual Air Conditioner]
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We recommend that towing be done only by an Authorized Mazda Dealer or a commercial
tow-truck service.
Proper lifting and towing are necessary to prevent damage to the vehicle.
Particularly when towing a AWD vehicle, where all the wheels are connected to
the drive train, proper transporting of ...
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1. Connect the M-MDS to the DLC?2.
2. Switch the ignition ON (engine on).
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4. Access the following PIDs using the M-MDS..
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The air intake control switches the air intake port (FRESH/REC) according
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Function
The air intake control drives the air intake actuator and switches the air
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