Mazda CX-5 Service & Repair Manual: Manual Air Conditioner Control System [Manual Air Conditioner]
Outline
-
The climate control unit performs the following controls based on the signals from each switch/dial and the sensor.
-
A/C compressor control
-
Defroster control
Block Diagram
Outline of Control System
-
Manual air conditioner has the following control.
|
Control name |
Control part |
|
Climate control unit |
A/C Compressor Control
-
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.
-
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
-
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.
-
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.
-
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
-
The defroster control improves the defrosting effect.
-
When the defroster switch turns on, the climate control unit fixes the air intake mode to FRESH.
-
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:
Rear Drive Shaft
Purpose, Function
Engine noise and vibration have been reduced due to adoption of a bell joint
on the wheel side of the constant velocity joint.
A low noise and vibration double offset joint with low slide resistance has
been adopted for the differential side of the constant v ...
Rocking the Vehicle
WARNING
Do not spin the wheels at more than 56 km/h (35 mph), and do not allow anyone
to stand behind a wheel when pushing the vehicle: When the vehicle is stuck, spinning
the wheels at high speed is dangerous. The spinning tire could overheat and explode.
This could cause serious injuries.
...
Rear Wiper Motor Inspection
1. Disconnect the negative battery cable..
2. Open the liftgate.
3. Remove the following parts:
a. Rear wiper arm and blade.
b. Liftgate upper trim.
c. Liftgate side trim.
d. Liftgate recess.
e. Liftgate lower trim.
4. Remove the rear wiper motor connector.
Rear Wiper Motor Ope ...
