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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 ...

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