1. Disconnect the negative battery cable..
2. Discharge the refrigerant..
3. Disconnect the refrigerant pressure sensor connector.
CAUTION:
If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise will occur. Always immediately plug all open fittings after removing any refrigeration cycle parts to keep moisture or foreign material out of the cycle.
4. Loosen the refrigerant pressure sensor using two spanners.
5. Remove the refrigerant pressure sensor..

10—11 N·m {102—112 kgf·cm, 89—97 in·lbf}
6. Install in the reverse order of removal.
7. Perform the refrigerant system performance test..
Refrigerant Pressure Sensor Installation Note
1. Apply compressor oil to the O-rings and connect the joints.
Refrigerant Pressure Sensor Inspection [Manual Air Conditioner]
Refrigerant Pressure Sensor Removal/Installation [Manual Air Conditioner]Aerodynamic Under Cover No.2 Removal/Installation
Except SKYACTIV-G 2.0
1. Lift up the vehicle.
2. Remove the fasteners and bolts.
3. Move the aerodynamic under cover No.2 in the direction of the arrow shown
in the figure and remove it.
CAUTION:
Be careful not to damage the aerodynamic under cover No.2 during removal.
4. ...
Stop Vehicle in Safe Place Immediately
If any of the following warning lights turns on, the system may have a
malfunction. Stop the
vehicle in a safe place immediately and contact an Authorized Mazda Dealer.
...
Transaxle Oil Inspection [A26 M R]
1. Park the vehicle on level ground.
2. Remove the aerodynamic under cover No.2..
3. Remove the oil level plug and gasket.
4. Verify that the oil is near the brim of the plug port.
If the oil level is lower than the low level, add the specified amount and
type of oil through the ...