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Expansion Valve Removal/Installation

WARNING: This page is about a different car, the 2017 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

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		 O-ring (expansion valve)
Quantity: 2
Location of use: expansion valve
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Discharge the refrigerant. (See REFRIGERANT RECOVERY .) (See REFRIGERANT CHARGING .)
  3. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
  4. Disconnect the refrigerant pressure sensor connector.
    Fig 1: Removing Refrigerant Pressure Sensor Connector
    G11430234Courtesy of MAZDA MOTORS CORP.
  5. Remove the bolt.
  6. Disconnect the engine ground.
  7. Remove the nut.
  8. Remove the clip.
  9. Remove the bolt.
    Fig 2: Removing Bolt Of Cooler Pipe
    G11430235Courtesy of MAZDA MOTORS CORP.
  10. Disconnect the cooler hose (LO) and cooler pipe. Do not allow compressor oil to spill.
    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.
  11. Set the cooler hose (LO) and cooler pipe aside as shown in the figure while being careful not to let remaining oil in the pipes to spill.
    Fig 3: Setting Cooler Hose (LO) And Cooler Pipe Aside
    G11430236Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • When setting the cooler hose (LO) and cooler pipe aside, only bend the flexible part of the hose. If force is applied to areas other than the flexible hose, the pipe will bend and could be damaged.
  12. Remove the bolts.
    Fig 4: Removing Bolts Of Expansion Valve
    G11430237Courtesy of MAZDA MOTORS CORP.
  13. Remove the expansion valve. Do not allow compressor oil to spill.
    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.
  14. Install in the reverse order of removal.
  15. Perform the refrigerant system performance test. (See REFRIGERANT SYSTEM PERFORMANCE TEST .)
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