Mazda CX-5 Service & Repair Manual: A/C Cut Off Control [Skyactiv G 2.0]
Outline
-
Controls the A/C operation by switching the A/C relay ON/OFF at the optimal timing according to engine operation conditions. Acceleration performance and A/C compressor reliability have been improved by controlling the A/C operation.
Block Diagram
Operation
-
The PCM stops current to the A/C relay when any of the following conditions are met:
|
Operation condition |
While A/C relay not energized |
Purpose |
|
At engine start |
Approx. 4 s |
Improved startability |
|
When engine speed is 6,700 rpm or more |
Approx. 5 s elapsed since engine speed was 6,200 rpm or less |
A/C compressor reliability assurance |
|
Accelerated |
3 to 5 s |
Acceleration from standstill/acceleration performance improvement |
|
Refrigerant pressure 3.14 MPa {32.0 kgf/cm2, 455 psi} or more |
Refrigerant pressure decreases to 2.55 MPa {26.0 kgf/cm2, 370 psi} or less |
A/C compressor reliability assurance |
|
Refrigerant pressure of 0.196 MPa {2.00 kgf/cm2, 28.4 psi} or less continues for 5 s or more |
Refrigerant pressure of 0.226 MPa {2.30 kgf/cm2, 32.8 psi} or more continues to 5 s or more |
A/C compressor reliability assurance |
|
Drive-by-wire control malfunction |
— |
Reverse driving performance assurance |
|
Panic braking determined |
— |
Load performance assurance |
|
Misfire determination |
— |
Catalytic converter protection |
|
ECT sensor malfunction |
— |
Engine protection |
|
Engine coolant temperature 113 °C {235 °F} or more |
Turns on/off repeatedly every 10 s until engine coolant temperature is less than approx. 107 °C {225 °F} |
Engine protection |
|
Engine coolant temperature 117 °C {243 °F} or more |
Until engine coolant temperature is less than 110 °C {230 °F} |
Engine protection |
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 ...
A/C Unit
Outline
The A/C unit which integrates the cooling and heater units has been adopted.
Construction
The A/C unit consists of the following parts.
Operation
Air Mix Door Op ...
Other materials:
Door Adjustment
1. Measure the gap and height difference between the door and the body.
2. Loosen the door hinge installation bolts and adjust the door.
Standard clearance
a: 2.8?3.8 mm {0.12?0.14 in}
b: -1.0?1.0 mm {-0.039?0.039 in}
c: 2.5?4.5 mm {0.10?0.17 in}
d: -1.0?1.0 m ...
Throttle Position (TP) Sensor Inspection
Voltage Inspection
CAUTION:
The inspection cannot be performed with this method correctly if there is
a malfunction of the APP sensor or throttle valve actuator. Verify that no DTCs
related to the APP sensor or throttle valve actuator are stored before the inspection.
NOTE:
...
Transmission/Transaxle SST
1: Mazda SST number
2: Global SST number
Example
1:49 UN30 3009
2:303-009
Crankshaft damper remover
Clutch [C66M-R]
1:49 E011 1A0
2: –
Ring gear brake set
1:49 SE01 310A
2: –
Clutch disc center ...
