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Mazda CX-5 Service & Repair Manual: A/C Compressor Control [Full Auto Air Conditioner]

Mazda CX-5 Service & Repair Manual / HVAC / A/C / A/C Compressor Control [Full Auto Air Conditioner]

Purpose

Function

A/C compressor automatic control

A/C compressor manual control


A/C mode

Operation condition

A/C ON mode (A/C display)

Fixed in A/C mode.

A/C OFF mode (No display)

Fixed in A/C OFF mode.


Correction

Construction


Input device

Control part

Output device

  • A/C switch (climate control unit)

  • Mode switch (climate control unit)

  • Temperature setting dial (climate control unit)

  • Refrigerant pressure sensor

  • Solar radiation sensor

  • Passenger compartment temperature sensor

  • Ambient temperature sensor

  • Evaporator temperature sensor

  • Climate control unit

  • PCM

  • Instrument cluster

  • A/C relay

  • Magnetic clutch (A/C compressor)


Operation

1. The climate control determines the A/C ON/OFF based on the operations of each switch/dial and signals from each sensor which changes according to the vehicle environment.

2. The climate control unit sends the A/C signal to the PCM according to the result of the A/C ON/OFF determination and corrections.

3. When the PCM turns the A/C relay on based on the A/C signal, the magnetic clutch of the A/C compressor turns on.


A/C Compressor
Purpose The A/C compressor circulates the refrigerant in the refrigerant cycle. The A/C compressor compresses the gaseous refrigerant atomized by the evaporator, and by pressurizing ...

A/C Compressor Removal/Installation
1. Disconnect the negative battery cable.. 2. Discharge the refrigerant.. 3. Remove the front under cover No.2.. 4. Remove the drive belt.. 5. Disconnect the connector. 6. Remove bolts A ...

Other materials:

Oil Control Valve (OCV) Inspection [Skyactiv G 2.0]
Coil Resistance Inspection 1. Disconnect the negative battery cable.. 2. Remove the plug hole plate.. 3. Disconnect the OCV connector. 4. Measure the resistance between terminals A and B using an ohmmeter. OCV coil resistance 6.9—7.5 ohms [20°C {68°F}] If ...

Car Navigation Unit Removal/Installation
CAUTION: The audio unit communicates with the car-navigation unit and records the presence/non-presence of the car-navigation unit when the ignition is switched to ACC or ON (engine off or on) after connecting the negative battery cable. If the commander switch is installed ...

Front Scuff Plate Removal/Installation
1. Take the shaded area shown in the figure, detach tab A while pulling the front scuff plate in the direction of the arrow (1) shown in the figure, then detach the hook B, clip C, and pin D while pulling in the direction of the arrow (2). 2. Take the shaded area shown in the figure, detach ta ...

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