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Mazda CX-5 Service & Repair Manual: Air Intake Control [Full Auto Air Conditioner]

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

Purpose

Function

Air intake automatic control

1. Calculates the cabin temperature value based on the ambient temperature and sunlight intensity.

2. Compares the calculated cabin temperature value and current cabin temperature.

3. Determines the air intake mode.


Air intake manual control


Air intake mode

REC switch operation

FRESH

Fixed to FRESH when the FRESH switch is turned on during REC mode

REC

Fixed to REC when the RECIRCULATE switch is turned on during FRESH mode


REC mode control under severe heat

Correction

Construction


Input device

Control part

Output device

  • Recirculate switch (climate control unit)

  • Fresh switch (climate control unit)

  • Defroster switch (climate control unit)

  • Ambient temperature sensor

  • Passenger compartment temperature sensor

  • Solar radiation sensor

  • Refrigerant pressure sensor

  • Climate control unit

  • PCM

  • Instrument cluster

  • Air intake actuator

  • Air intake door


Operation

1. The climate control determines the air intake mode based on the operations of the REC, FRESH, defroster switches and signals from each sensor which changes according to the vehicle environment.

2. The climate control unit drives the air intake actuator according to the result of the air intake mode determination and corrections.


Air Intake Actuator [Manual Air Conditioner]
Purpose The air intake actuator moves the air intake door in the blower unit to switch the air intake port. Function The air intake actuator drives the motor based on the signal ...

Air Mix Actuator Inspection [Full Auto Air Conditioner]
CAUTION: If the lever position exceeds the operation range shown in the figure, the circuit in the actuator could be damaged. Always perform an actuator operation inspection with the lev ...

Other materials:

Engine Coolant
Inspecting Coolant Level WARNING Do not use a match or live flame in the engine compartment. DO NOT ADD COOLANT WHEN THE ENGINE IS HOT: A hot engine is dangerous. If the engine has been running, parts of the engine compartment can become very hot. You could be burned. Carefully inspect the e ...

Condenser
Purpose The condenser cools the high-temperature, highly pressurized refrigerant. Function The condenser cools the high-temperature, highly pressurized gaseous refrigerant compressed by the A/C compressor using the outside air, and changes it to liquid refrigerant. Co ...

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 ...

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