Refrigerant Pressure Sensor Removal/Installation (Auto A/C): Notes

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Discharge the refrigerant. (See REFRIGERANT CHARGING .)
Disconnect the refrigerant pressure sensor connector.

Fig 1: Identifying Refrigerant Pressure Sensor
Courtesy of MAZDA MOTORS CORP.
Loosen the refrigerant pressure sensor using two spanners.
Tightening torque

10-11 N.m {102-112 kgf.cm, 89-97 in.lbf}

Fig 2: Rotating Refrigerant Pressure Sensor Using Two Spanners
Courtesy of MAZDA MOTORS CORP.
Remove the refrigerant pressure sensor.
CAUTION:
- If moisture or foreign matter 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 matter out of the cycle.
Install in the reverse order of removal. (See REFRIGERANT PRESSURE SENSOR INSTALLATION NOTE .)
Perform the refrigerant system performance test. (See REFRIGERANT SYSTEM PERFORMANCE TEST .)

Fig 3: Identifying Refrigerant Pressure Sensor And O-Ring
Courtesy of MAZDA MOTORS CORP.