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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Control System - Auto A/C >> Refrigerant Pressure Sensor Removal/Installation >> Notes
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Refrigerant Pressure Sensor Removal/Installation: Notes

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Discharge the refrigerant. (See REFRIGERANT RECOVERY .) (See REFRIGERANT CHARGING .)
  3. Disconnect the connectors.
    Fig 1: PCM Component, Connectors And Bolts With Torque Specification
    G11433697Courtesy of MAZDA MOTORS CORP.
  4. Remove the bolts.
  5. Set the PCM component out of the way.
  6. Disconnect the connector.
    G11433698Courtesy of MAZDA MOTORS CORP.
  7. Loosen the refrigerant pressure sensor using two spanners.
    Fig 2: Refrigerant Pressure Sensor Nut With Torque Specification
    G11433699Courtesy of MAZDA MOTORS CORP.
  8. Remove the refrigerant pressure sensor.
    G11433700Courtesy of MAZDA MOTORS CORP.
    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.
  9. Install in the reverse order of removal. (See Refrigerant pressure sensor installation note .)
  10. Perform the refrigerant system performance test. (See REFRIGERANT SYSTEM PERFORMANCE TEST .)