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Home >> Mazda >> 2023 >> CX-50 S >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Basic System - HVAC >> A/C Unit Removal/Installation

A/C Unit Removal/Installation

Replacement Part 

O-ring (cooler hose (LO))
Quantity: 1
Location of use: A/C unit
O-ring (cooler pipe)
Quantity: 1
Location of use: A/C unit

Oil and chemical type 

Refrigerant
Type: HFO-1234yf (R-1234yf)
Engine coolant
Type: Recommended engine coolant
Compressor oil
Type: FD46XG
WARNING:
CAUTION:
  • When leaving the A/C unit, store it in the correct position shown in the figure below. If the A/C unit is left in an incorrect position, the cooler pipe, heater pipe, or urethane could be deformed or damaged.
G13177372Courtesy of MAZDA MOTORS CORP.
  1. Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Discharge the refrigerant. (See REFRIGERANT RECOVERY .) (See REFRIGERANT CHARGING .)
  3. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT (VIN M) .) (See ENGINE COOLANT REPLACEMENT (VIN Y) .)
  4. Remove the following parts:
    1. Plug hole plate (See PLUG HOLE PLATE REMOVAL/INSTALLATION (VIN M) .) (See PLUG HOLE PLATE REMOVAL/INSTALLATION (VIN Y) .)
    2. Select lever knob (See SELECTOR LEVER COMPONENT REMOVAL/INSTALLATION .)
    3. Console side panel (See CONSOLE SIDE PANEL REMOVAL/INSTALLATION .)
    4. Shift panel (See SHIFT PANEL REMOVAL/INSTALLATION .)
    5. Front console upper panel (See FRONT CONSOLE UPPER PANEL REMOVAL/INSTALLATION .)
    6. Front console box (See FRONT CONSOLE BOX REMOVAL/INSTALLATION .)
    7. Upper panel (without wireless charger (Qi)) (See UPPER PANEL REMOVAL/INSTALLATION .)
    8. Wireless charger (Qi) (with wireless charger (Qi)) (See WIRELESS CHARGER (Qi) REMOVAL/INSTALLATION .)
    9. Console-up (See CONSOLE-UP REMOVAL/INSTALLATION .)
    10. Rear console (See REAR CONSOLE REMOVAL/INSTALLATION .)
    11. A-pillar trim (See A-PILLAR TRIM REMOVAL/INSTALLATION .)
    12. Front scuff plate (See FRONT SCUFF PLATE REMOVAL/INSTALLATION .)
    13. Front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION .)
    14. Passenger-side decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION .)
    15. Glove compartment (without passenger-side knee air bag module) (See GLOVE COMPARTMENT REMOVAL/INSTALLATION .)
    16. Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION .)
    17. Passenger-side lower panel (See PASSENGER-SIDE LOWER PANEL REMOVAL .) (See PASSENGER-SIDE LOWER PANEL INSTALLATION .)
    18. Passenger-side knee air bag module (with passenger-side knee air bag module) (See KNEE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .)
    19. Passenger-side ventilator grille (See VENTILATOR GRILLE REMOVAL/INSTALLATION .)
    20. Driver-side decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION .)
    21. Driver-side lower panel (See DRIVER-SIDE LOWER PANEL REMOVAL/INSTALLATION .)
    22. Driver-side knee air bag module (See KNEE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .)
    23. Center lower panel (See CENTER LOWER PANEL REMOVAL/INSTALLATION .)
    24. Climate control unit (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] .)
    25. Driver-side air bag module (See DRIVER-SIDE AIR BAG MODULE REMOVAL [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .) (See DRIVER-SIDE AIR BAG MODULE INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .)
    26. Steering wheel (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
    27. Upper column cover (See COLUMN COVER REMOVAL/INSTALLATION .)
    28. Lower column cover (See COLUMN COVER REMOVAL/INSTALLATION .)
    29. Clock spring (See CLOCK SPRING REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM - US/CANADA SPEC.] .)
    30. Light switch (See LIGHT SWITCH REMOVAL/INSTALLATION .)
    31. Wiper and washer switch (See WIPER AND WASHER SWITCH REMOVAL/INSTALLATION .)
    32. Joint cover (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
    33. Steering column component (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
    34. Instrument cluster (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
    35. Speaker grille (See SPEAKER GRILLE REMOVAL/INSTALLATION .)
    36. Center display (See CENTER DISPLAY REMOVAL/INSTALLATION .)
    37. Connectivity master unit (CMU) (See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION .)
    38. Dashboard side cover (See DASHBOARD SIDE COVER REMOVAL/INSTALLATION .)
    39. Dashboard (See DASHBOARD REMOVAL .) (See DASHBOARD INSTALLATION .)
    40. Blower unit (See BLOWER UNIT REMOVAL/INSTALLATION .)
    41. Front heat duct No. 1 (See FRONT HEAT DUCT REMOVAL/INSTALLATION .)
    42. Foot support (See FOOT SUPPORT REMOVAL/INSTALLATION .)
  5. Remove the bolt.
    Fig 1: Cooler Pipe, Cooler Hose (Lo) And Bolt With Torque Specifications
    G15750026Courtesy of MAZDA MOTORS CORP.
  6. Disconnect the cooler hose (LO) and cooler pipe.
    CAUTION:
    • If moisture or foreign matter enters the refrigeration cycle, cooling ability will be lowered and abnormal noise or other malfunctions could occur. Always plug open fittings immediately after removing any refrigeration cycle parts.
  7. Disconnect the heater hose.
    G15750027Courtesy of MAZDA MOTORS CORP.
  8. Disconnect the drain hose.
    G15750028Courtesy of MAZDA MOTORS CORP.
  9. Disconnect the dash-electrical supply unit connectors.
    G13177376Courtesy of MAZDA MOTORS CORP.
  10. Detach the clip.
  11. Remove the nuts.
    Fig 2: A/C Unit Nuts With Torque Specifications
    G13177377Courtesy of MAZDA MOTORS CORP.
  12. Remove the A/C unit. Do not allow compressor oil to spill.
  13. Install in the reverse order of removal.
  14. When replacing the A/C unit add compressor oil to the refrigeration cycle.
    COMPRESSOR OIL SPECIFICATION

    Category Supplemental amount (approx. quantity)
    FD46XG 45 ml {45 cc, 1.5 US fl oz}
  15. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT (VIN M) .) (See ENGINE COOLANT REPLACEMENT (VIN Y) .)
  16. Inspect for engine coolant leakage. (See ENGINE COOLANT LEAKAGE INSPECTION (VIN M) .) (See ENGINE COOLANT LEAKAGE INSPECTION (VIN Y) .)
  17. Charge the refrigerant. (See REFRIGERANT CHARGING .)
  18. Perform the air-conditioning system performance test. (See REFRIGERANT SYSTEM PERFORMANCE TEST .)