Mazda CX-5 Service & Repair Manual: Manual Air Conditioner Control System [Manual Air Conditioner]
Outline
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The climate control unit performs the following controls based on the signals from each switch/dial and the sensor.
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A/C compressor control
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Defroster control
Block Diagram
Outline of Control System
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Manual air conditioner has the following control.
|
Control name |
Control part |
|
Climate control unit |
A/C Compressor Control
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The climate control unit sends the A/C signal to the PCM based on the signals sent from the A/C switch, airflow volume control dial, and evaporator temperature sensor.
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The PCM turns the A/C relay on/off based on the input signals from the A/C signal and A/C pressure sensor and controls the A/C compressor (magnetic clutch) operation.
A/C signal on/off control
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When the A/C switch and fan switch are turned on, the climate control unit turns the A/C signal (magnetic clutch) on/off based on the temperature of the air passing through the evaporator.
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When the fan switch and A/C switch are turned on, the climate control unit controls the surface temperature of the evaporator so that it is within a certain range to prevent the evaporator from freezing.
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When the ambient temperature is low, the climate control unit sets the A/C signal (magnetic clutch) off-temperature to low to prevent window fogging.
Defroster control
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The defroster control improves the defrosting effect.
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When the defroster switch turns on, the climate control unit fixes the air intake mode to FRESH.
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The air intake is fixed at FRESH even if it has been set to REC manually.
Magnetic Clutch Inspection [Manual Air Conditioner]
1. Connect battery to terminal A of magnetic clutch and ground to A/C compressor
body.
2. Verify that the magnetic clutch operates.
If there is any malfunction, replace the magnetic cl ...
Passenger Compartment Temperature Sensor Inspection [Full Auto Air Conditioner]
1. Measure the temperature around the passenger compartment temperature sensor
and measure the resistance between passenger compartment temperature sensor terminals
A and B.
If the charact ...
Other materials:
Blind Spot Monitoring (Bsm) Control Module
Purpose
Controls the blind spot monitoring (BSM) system.
Function
The BSM control module emits microwaves to detect an oncoming vehicle's position
and speed information via the reflected microwaves.
The BSM system is controlled based on the detected vehicle positio ...
License Plate Light
Purpose
The license plate lights shine light on the license plate during nighttime
driving.
Function
The license plate lights illuminate in conjunction with the operation of
the light switch.
Construction
The license plate lights are installed to the liftgate.
...
Power Brake Unit Removal/Installation
CAUTION:
Once the brake switch clearance has automatically been adjusted, it cannot
be adjusted again. Therefore, replace the switch with a new one when replacing
the power brake unit or performing any procedure that changes the pedal stroke.
1. Remove the battery and battery tra ...
