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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Basic System >> Refrigerant Line Removal/Installation >> Rear Cooler Pipe >> Notes
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Rear Cooler Pipe: Notes

  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 following parts:
    1. Front under cover No. 2 (See FRONT UNDER COVER No. 2 REMOVAL/INSTALLATION .)
    2. Floor under cover No. 1 and No. 2 (See FLOOR UNDER COVER REMOVAL/INSTALLATION .)
    3. Plate (See PLATE REMOVAL/INSTALLATION .)
    4. Floor under cover No. 2 (See FLOOR UNDER COVER REMOVAL/INSTALLATION .)
    5. Floor under cover No. 1 (See FLOOR UNDER COVER REMOVAL/INSTALLATION .)
    6. Plate (See PLATE REMOVAL/INSTALLATION .)
    7. Brace bar
      Fig 1: Tunnel Member, Brace Bar, Strut Bar And Bolts With Torque Specification
      G12263550Courtesy of MAZDA MOTORS CORP.
    8. Tunnel member
    9. Insulator (middle) (See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T] .)
    10. HO2S harness bracket
    Fig 2: HO2S Harness Bracket And Nuts With Torque Specification
    G11433619Courtesy of MAZDA MOTORS CORP.
  4. Remove the TWC from the mount rubber.
    G11069287Courtesy of MAZDA MOTORS CORP.
  5. Disconnect the TWC from the main silencer. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T] .)
  6. Suspend the TWC using a cable as shown in the figure.
    G11433620Courtesy of MAZDA MOTORS CORP.
  7. Remove the propeller shaft. (4WD) (See PROPELLER SHAFT REMOVAL/INSTALLATION .)
  8. Remove the Insulator (front) (See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T] .)
  9. Loosen the nut and disconnect the front cooler pipe (HI). Do not allow compressor oil to spill.
    Fig 3: Front Cooler Pipe (LO), Front Cooler Pipe (HI) And Nuts With Torque Specification
    G11433621Courtesy 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.
  10. Loosen the nut and disconnect the front cooler pipe (LO). Do not allow compressor oil to spill.
    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.
  11. Remove the bolt. (See Refrigerant line removal note .)
    Fig 4: Rear Cooler Pipe And Bolt With Torque Specification
    G11433622Courtesy of MAZDA MOTORS CORP.
  12. Disconnect the rear cooler pipe. Do not allow compressor oil to spill.
    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.
  13. Remove the clips.
    G11433623Courtesy of MAZDA MOTORS CORP.
  14. Remove the rear cooler pipe. Do not allow compressor oil to spill.
    G11433624Courtesy of MAZDA MOTORS CORP.
  15. Install in the reverse order of removal. (See Refrigerant line installation note (1) .) (See Refrigerant line installation note (2) .)
  16. Perform the refrigerant system performance test. (See REFRIGERANT SYSTEM PERFORMANCE TEST .)
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