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Home >> Mazda >> 2016 >> CX-9 Signature >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Basic System - HVAC >> Rear A/C Unit Removal/Installation >> Notes

Rear A/C Unit Removal/Installation: Notes

  1. Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Discharge the refrigerant. (Refer to REFRIGERANT RECOVERY .) (Refer to REFRIGERANT CHARGING .)
  3. Drain the engine coolant. (Refer to ENGINE COOLANT REPLACEMENT .)
  4. Remove the following parts:
    1. Selector lever knob (Refer to AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION .)
    2. Shift panel (Refer to SHIFT PANEL REMOVAL/INSTALLATION .)
    3. Console side panel (Refer to CONSOLE SIDE PANEL REMOVAL/INSTALLATION .)
    4. Front console (Refer to FRONT CONSOLE REMOVAL/INSTALLATION .)
    5. Side wall (Refer to SIDE WALL REMOVAL/INSTALLATION .)
    6. Rear console (Refer to REAR CONSOLE REMOVAL/INSTALLATION .)
    7. Selector lever component (Refer to AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION .)
    8. Selector lever bracket (Refer to AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION .)
    9. Keyless antenna (center) (Refer to KEYLESS ANTENNA REMOVAL/INSTALLATION .)
    10. Floor under cover No. 2 (Refer to FLOOR UNDER COVER REMOVAL/INSTALLATION .)
    11. Floor under cover No. 1 (Refer to FLOOR UNDER COVER REMOVAL/INSTALLATION .)
    12. Tunnel member
      Fig 1: Identifying Rear A/C Unit Tunnel Member And Bolt With Torque Specifications
      G10948352Courtesy of MAZDA MOTORS CORP.
    13. Strut bar
    14. Insulator (middle) (Refer to EXHAUST SYSTEM REMOVAL/INSTALLATION .)
  5. Remove the bolt.
    Fig 2: Identifying Rear Cooler Pipes And Bolt With Torque Specifications
    G10948353Courtesy of MAZDA MOTORS CORP.
  6. 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 or other malfunctions could occur. Always plug open fittings immediately after removing any refrigeration cycle parts.
  7. Disconnect the rear heater hose No. 1.
    Fig 3: Identifying Rear Heater Hoses And Clips
    G10948354Courtesy of MAZDA MOTORS CORP.
  8. Disconnect the rear heater hose No. 2.
  9. Disconnect the rear blower motor connector.
    Fig 4: Identifying Rear A/C Unit, Rear Airflow Mode Actuator Connector, And Power Mosfet Connector
    G10948355Courtesy of MAZDA MOTORS CORP.
  10. Disconnect the power MOSFET connector.
  11. Disconnect the rear airflow mode actuator connector.
  12. Disconnect the rear air mix actuator connector.
  13. Detach the clips.
    Fig 5: Identifying Rear A/C Unit And Clips
    G10948356Courtesy of MAZDA MOTORS CORP.
  14. Remove the nuts.
    Fig 6: Identifying Rear A/C Unit And Nuts With Torque Specifications
    G10948357Courtesy of MAZDA MOTORS CORP.
  15. Move the rear A/C unit in the order of arrows (1) and (2) shown in the figure, and remove the rear A/C unit. Do not allow compressor oil to spill.
    Fig 7: Removing Rear A/C Unit
    G10948358Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • Do not hold the rear blower motor part and mode link part as shown in the figure when removing/installing the rear A/C unit. Otherwise, the rear blower motor and mode link could be damaged.
    Fig 8: Identifying Rear A/C Unit, Mode Link Part And Rear Blower Motor Part
    G10948359Courtesy of MAZDA MOTORS CORP.
  16. Install in the reverse order of removal. (Refer to REAR A/C UNIT INSTALLATION NOTE (1) .) (Refer to REAR A/C UNIT INSTALLATION NOTE (2) .)
  17. Inspect for engine coolant leakage. (Refer to ENGINE COOLANT LEAKAGE INSPECTION .)
  18. Perform the refrigerant system performance test. (Refer to REFRIGERANT SYSTEM PERFORMANCE TEST .)
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