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Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System (Heater, Ventilator And A/C) (Service Information) >> Evaporator >> Removal

HVAC System (Heater, Ventilator And A/C) (Service Information): Evaporator: Removal

CAUTION: Before handling the airbag system components, refer to "CAUTION" of "General Description" in "AIRBAG SYSTEM". Refer to AIRBAG SYSTEM>GENERAL DESCRIPTION>CAUTION .
  1. Disconnect the ground cable from battery and wait for at least 60 seconds before starting work. Refer to NOTE>NOTE>BATTERY .
    NOTE: For model with battery sensor, disconnect the ground terminal from battery sensor.
  2. Using the refrigerant recovery system, discharge refrigerant. Refer to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>REFRIGERANT RECOVERY PROCEDURE>PROCEDURE .
  3. Remove the intercooler.
  4. Remove the expansion valve - cooling. Refer to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>EXPANSION VALVE>REMOVAL .
  5. Remove the glove box. Refer to EXTERIOR/INTERIOR TRIM>GLOVE BOX>REMOVAL .
  6. Remove the engine control module (ECM). (STI model) Refer to FUEL INJECTION (FUEL SYSTEMS) (STI)>ENGINE CONTROL MODULE (ECM)>REMOVAL .
  7. Remove the blower motor unit assembly. Refer to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>BLOWER MOTOR UNIT ASSEMBLY>REMOVAL .
  8. Remove the evaporator assembly - cooling.
    1. Disconnect the connector and lock of the thermostat - cooling.
    2. Remove the screws and detach the cover.
      G08316184Courtesy of SUBARU OF AMERICA, INC.
    3. Remove the cover - heater unit.
      1. Disconnect the power transistor connector.
      2. Remove the screws and clips to remove the cover - heater unit.
      G08316185Courtesy of SUBARU OF AMERICA, INC.
    4. Remove the bolt, and detach the pipe - evaporator core.
      CAUTION: Seal the disconnected pipe and engaging part of evaporator assembly with a plug or vinyl tape to prevent foreign matter from entering.

      Preparation tool: 

      Hexagon wrench: 4 mm (0.16 in)

      G08316186Courtesy of SUBARU OF AMERICA, INC.
    5. Remove the evaporator assembly - cooling.
      G08316187Courtesy of SUBARU OF AMERICA, INC.
    6. Remove the thermostat - cooling.
      G08316188Courtesy of SUBARU OF AMERICA, INC.