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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Service Information (1 Of 4) >> Air Conditioning Unit >> Removal [03/2019 - 06/2021] >> Procedure

Removal [03/2019 - 06/2021]: Procedure

  1. PRECAUTION 
    NOTE:

    Make sure to select face mode before disconnecting the cable from the negative (-) battery terminal.

  2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (for HFC-134a (R134a)) 

    See step  1

  3. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (for HFO-1234yf (R1234yf)) 

    See step  1 [01/2019 - 06/2020], or see step  1 [06/2020 - ]

  4. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [01/2019 - 09/2019] , or refer to REMOVAL [09/2019 - 09/2022]

  5. REMOVE NO. 1 HEATER AIR DUCT SPLASH SHIELD SEAL 

    Refer to PROCEDURE - Step 3

  6. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 4

  7. DISCONNECT OUTLET HEATER WATER HOSE 
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the outlet heater water hose.
      GTY876288Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not apply excessive force to the outlet heater water hose.
      • Prepare a drain pan or cloth in case the coolant leaks.
  8. DISCONNECT INLET HEATER WATER HOSE 
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the inlet heater water hose.
      NOTE:
      • Do not apply excessive force to the inlet heater water hose.
      • Prepare a drain pan or cloth in case the coolant leaks.
      GTY876297Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. DISCONNECT SUCTION PIPE SUB-ASSEMBLY (w/o Sub-cool Accelerator) 
    1. Remove the bolt and rotate the hook connector as shown in the illustration.
      GTY876296Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the suction pipe sub-assembly.
      GTY876299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the O-ring from the suction pipe sub-assembly.
      NOTE:

      Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

  10. DISCONNECT COOLER REFRIGERANT LIQUID PIPE A (w/o Sub-cool Accelerator) 
    1. Disconnect the cooler refrigerant liquid pipe A.
      GTY875158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the O-ring from the cooler refrigerant liquid pipe A.
      NOTE:

      Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

  11. DISCONNECT SUCTION PIPE SUB-ASSEMBLY (w/ Sub-cool Accelerator) 
    1. Remove the bolt and rotate the hook connector as shown in the illustration.
      GTY934559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the suction pipe sub-assembly.
      GTY875159Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 2 O-rings from the suction pipe sub-assembly.
      NOTE:

      Seal the openings of the disconnected parts using vinyl tape to prevent entry of moisture and foreign matter.

  12. REMOVE FRONT SEAT ASSEMBLY LH 

    for Manual Seat:

    Refer to REMOVAL [03/2019 - 09/2022]

    for Power Seat:

    Refer to REMOVAL [03/2019 - 09/2022]

  13. REMOVE FRONT SEAT ASSEMBLY RH 

    HINT: 

    Use the same procedure as for the LH side.

  14. REMOVE STEERING COLUMN ASSEMBLY 

    Refer to REMOVAL [03/2019 - 09/2019] , or refer to REMOVAL [09/2019 - 04/2020] , or refer to REMOVAL [04/2020 - 09/2022]

  15. REMOVE INSTRUMENT PANEL SAFETY PAD SUB-ASSEMBLY 

    Refer to REMOVAL [03/2019 - 06/2021]

  16. REMOVE ECU INTEGRATION BOX RH 

    Refer to PROCEDURE - Step 13

  17. REMOVE METER MIRROR SUB-ASSEMBLY (w/ Headup Display) 

    Refer to PROCEDURE - Step 2

  18. REMOVE COOLER (ROOM TEMP. SENSOR) THERMISTOR (for Automatic Air Conditioning System) 
    1. Disconnect the connector and aspirator to remove the cooler (room temp. sensor) thermistor.
      GTY875162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. REMOVE FUEL LID LOCK OPEN LEVER SUB-ASSEMBLY (for Hatchback) 

    Refer to PROCEDURE - Step 23

  20. REMOVE FUEL LID LOCK OPEN LEVER SUB-ASSEMBLY (for Sedan) 

    Refer to PROCEDURE - Step 25 [03/2019 - 04/2020] , or refer to PROCEDURE - Step 26 [04/2020 - 09/2022]

  21. REMOVE FRONT FLOOR CAUTION PLATE COVER 
    1. Lift the front floor caution plate cover as shown by the arrow (1) to disengage the claw, and then pull the front floor caution plate cover as shown by the arrow (2) in the illustration to disengage the guide and remove it.
      GTY844334Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Place Hand Here
      Remove in this Direction (1)
      Remove in this Direction (2)
  22. DISCONNECT FRONT FLOOR CARPET ASSEMBLY 
    1. for LH Side:
      1. Remove the front floor carpet clip.
        GTY895266Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Remove the 2 front floor carpet clips.
        GTY938748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.
        GTY895268Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. for RH Side:
      1. Remove the front floor carpet clip.
        GTY895274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Remove the 2 front floor carpet clips.
        GTY895276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.
        GTY895275Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. REMOVE REAR NO. 4 AIR DUCT (w/ Rear Air Duct) 
    1. Disengage the 2 claws and remove the rear No. 4 air duct as shown in the illustration.
      GTY893916Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  24. REMOVE REAR NO. 3 AIR DUCT (w/ Rear Air Duct) 
    1. GTY906292Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction

      Disengage the 2 claws and remove the rear No. 3 air duct as shown in the illustration.

  25. REMOVE REAR NO. 6 AIR DUCT (w/ Rear Air Duct) 
    1. Disengage the 2 claws and remove the rear No. 6 air duct as shown in the illustration.
      GTY865025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  26. REMOVE REAR NO. 5 AIR DUCT (w/ Rear Air Duct) 
    1. Disengage the 2 claws and remove the rear No. 5 air duct as shown in the illustration.
      GTY873180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  27. REMOVE REAR NO. 2 AIR DUCT (w/ Rear Air Duct) 
    1. Disengage the 4 claws and remove the rear No. 2 air duct as shown in the illustration.
      GTY916100Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  28. REMOVE NO. 3 DASH PANEL INSULATOR PAD 
    1. Cut each claw of the 2 clips and remove the No. 3 dash panel insulator pad.
      GTY910838Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Cut
      NOTE:

      If the No. 3 dash panel insulator pad is damaged, replace it with a new one.

    2. Remove the 2 clips.
  29. REMOVE CENTER HEATER TO REGISTER DUCT SUB-ASSEMBLY 
    1. Disengage the clamp.
      GTY875152Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 clips and center heater to register duct sub-assembly.
  30. REMOVE LOWER DEFROSTER NOZZLE ASSEMBLY 
    1. Disengage the 6 claws and guide to remove the lower defroster nozzle assembly.
      GTY875151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY 
    1. Remove the bolt, nut and No. 3 instrument panel to cowl brace sub-assembly.
      GTY840998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut
  32. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU 

    Refer to PROCEDURE - Step 11

  33. DISCONNECT INSTRUMENT PANEL WIRE 
    1. Remove the 2 nuts and disconnect the relay block holder.
      GTY934305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt and disconnect the instrument panel wire.
      GTY938654Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect each connector.
      GTY862391Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A w/ PTC Heater - -
      *a Earth Wire - -
      Connector Bolt
      Screw - -
    4. w/ PTC Heater:
      1. Remove the bolt and disconnect the earth wire.
    5. Remove the 3 bolts and disconnect the 3 earth wires.
    6. Remove the screw and disconnect the instrument panel wire.
    7. Disengage each clamp.
    8. Push down the part (A) in the direction indicated by the arrow (1), to release the lock, and then move the lock lever in the direction indicated by the arrow (2) shown in the illustration to disconnect the connector.
      GTY872017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Release (1)
      Move in this Direction (2)
      NOTE:

      When disconnecting any airbag connector, take care not to damage the airbag wire harness.

    9. Disengage each clamp to separate the instrument panel wire.
  34. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. Turn back the front floor mat as shown in the illustration.
      GTY879544Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Move in this Direction
    2. Remove the bolt and disconnect the earth wire.
      GTY851913Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Earth Wire
    3. Disengage each clamp.
    4. Remove the bolt, screw, nut and No. 1 instrument panel brace sub-assembly.
      GTY932542Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Screw
      Nut
  35. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. Turn back the front floor mat as shown in the illustration.
      GTY889414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Move in this Direction
    2. Disengage each clamp.
      GTY903259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the bolt, screw, nut and No. 2 instrument panel brace sub-assembly.
      GTY878534Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Screw
      Nut
  36. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY WITH AIR CONDITIONER UNIT ASSEMBLY 
    NOTE:
    • Be sure to support the air conditioner unit assembly when removing it. Failure to do so may cause the bracket of the air conditioner unit assembly to break.
    • When disassembling the air conditioner unit assembly, eliminate static electricity by touching the vehicle body to prevent the components from being damaged.
    1. Turn back the front floor mat as shown in the illustration.
      GTY895167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the drain cooler hose.
      GTY869705Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Cooler Unit Drain Hose Grommet
      NOTE:

      If the drain cooler hose is disconnected from the cooler unit drain hose grommet, make sure to replace the cooler unit drain hose grommet with a new one. Failure to do so may lead to water ingress.

    3. Remove the cooler unit drain hose grommet.
      GTY895155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 2 bolts.
      GTY877515Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the 4 bolts (A).
      GTY876971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A for Manual Transaxle - -
      Bolt (A) Bolt (B)
      Bolt (C) Nut
    6. Remove the bolt (B).
    7. for Manual Transaxle:
      1. Remove the bolt (C).
    8. Remove the nut.
    9. Disengage each clamp.
      GTY920912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
    10. Disconnect each connector.
    11. Remove the instrument panel reinforcement assembly with air conditioner unit assembly as shown in the illustration.
    12. Disengage the claw and 2 guides to disconnect the ID code box (immobiliser code ECU) as shown in the illustration.
      GTY872669Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  37. REMOVE AIR CONDITIONER UNIT ASSEMBLY 
    1. Remove the 3 bolts.
      GTY895142Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the 2 claws and remove the air conditioner unit assembly from the instrument panel reinforcement assembly.
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