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:
DSC Control
Outline
While a vehicle normally turns safely in response to steering operation,
there are instances when the limits of tire lateral grip is surpassed due to
road surface conditions or vehicle speed, and the influence of evasive steering
to avoid an accident or similar situations.
...
R 3 5 Brake [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The R-3-5 brake operates in 3GR, 5GR and in reverse to lock the reduction
internal gear against rotation.
Construction
The R-3-5 brake consists of the following parts shown in the figure.
The driven plate of the R-3-5 brake does not rotate be ...
Oil Pump [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The oil pump generates hydraulic pressure in the oil line of the automatic
transaxle together with supplying lubrication to powertrain related parts.
Construction
The oil pump has adopted a gear type with built-in outer and inner rotors.
The inner roto ...
