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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Service Information) (1 Of 2) >> AIR CONDITIONING UNIT (for HV Model) >> Removal [08/2019 - 08/2021] >> Procedure

Removal [08/2019 - 08/2021]: Procedure

  1. PRECAUTION 
    NOTE:

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

  2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    See step  1

  3. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [04/2018 -]

  4. REMOVE FRONT CENTER UPPER SUSPENSION BRACE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 6 [04/2018 - 08/2020] , or refer to PROCEDURE - Step 6 [08/2020 - 08/2021]

  5. 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.
      GTY945443Courtesy 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.
  6. 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.
      GTY925429Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. DISCONNECT SUCTION PIPE SUB-ASSEMBLY 
    1. Remove the bolt and rotate the hook connector as shown in the illustration.
      GTY925428Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the suction pipe sub-assembly.
      GTY925427Courtesy 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.

  8. DISCONNECT AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY 
    1. Disconnect the air conditioning tube and accessory assembly.
      GTY945441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the O-ring from the air conditioning tube and accessory assembly.
      NOTE:

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

  9. REMOVE FRONT SEAT ASSEMBLY LH 

    Refer to REMOVAL [04/2018 - 08/2020] , or refer to REMOVAL [08/2020 - 08/2021]

  10. REMOVE FRONT SEAT ASSEMBLY RH 

    HINT: 

    Use the same procedure as for the LH side.

  11. REMOVE TRANSMISSION FLOOR SHIFT ASSEMBLY 

    Refer to REMOVAL [04/2018 -]

  12. REMOVE STEERING COLUMN ASSEMBLY 

    for Manual Tilt and Manual Telescopic Steering Column:

    Refer to REMOVAL [04/2018 - 08/2021]

    for Power Tilt and Power Telescopic Steering Column:

    Refer to REMOVAL [04/2018 - 08/2021]

  13. REMOVE INSTRUMENT PANEL SAFETY PAD SUB-ASSEMBLY 

    Refer to REMOVAL [04/2018 - 08/2021]

  14. REMOVE ECU INTEGRATION BOX RH 

    Refer to PROCEDURE - Step 3

  15. REMOVE VEHICLE APPROACHING SPEAKER CONTROLLER 

    Refer to PROCEDURE - Step 3 [04/2018 - 08/2020] , or refer to PROCEDURE - Step 3 [08/2020 - 08/2021]

  16. REMOVE DCM (TELEMATICS TRANSCEIVER) WITH BRACKET 

    Refer to PROCEDURE - Step 10 [04/2018 - 08/2020] , or refer to PROCEDURE - Step 10 [08/2020 -]

  17. REMOVE NO. 1 CLEARANCE WARNING BUZZER (w/ Intelligent Parking Assist System) 

    Refer to PROCEDURE - Step 9

  18. REMOVE DRIVING SUPPORT ECU ASSEMBLY 

    Refer to PROCEDURE - Step 2

  19. REMOVE COOLER (ROOM TEMP. SENSOR) THERMISTOR 
    1. Disconnect the connector and aspirator to remove the cooler (room temp. sensor) thermistor.
      GTY925391Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. REMOVE ACCELERATOR PEDAL PAD 

    Refer to PROCEDURE - Step 3

  21. REMOVE ACCELERATOR PEDAL 

    Refer to PROCEDURE - Step 4

  22. REMOVE REAR NO. 2 AIR DUCT 
    1. GTY925390Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the front floor carpet clip.

    2. GTY925389Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 front floor carpet clips.

    3. Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.
      GTY925388Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disengage the 4 claws and remove the rear No. 2 air duct as shown in the illustration.
      GTY884550Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  23. REMOVE REAR NO. 1 AIR DUCT 
    1. GTY925402Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Disengage the 2 claws and remove the rear No. 1 air duct.

  24. REMOVE REAR NO. 4 AIR DUCT 
    1. GTY925401Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the front floor carpet clip.

    2. Remove the 2 front floor carpet clips.
      GTY945436Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.
      GTY925400Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disengage the 4 claws and remove the rear No. 4 air duct as shown in the illustration.
      GTY873811Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  25. REMOVE REAR NO. 3 AIR DUCT 
    1. Disengage the 2 claws and remove the rear No. 3 air duct.
      GTY945432Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. REMOVE FLOOR CARPET BRACKET RH 
    1. Remove the clip.
      GTY891685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
    2. Disengage the claw to remove the floor carpet bracket RH as shown in the illustration.
  27. REMOVE FLOOR CARPET BRACKET LH 
    1. Remove the clip.
      GTY844757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
    2. Disengage the claw to remove the floor carpet bracket LH as shown in the illustration.
  28. REMOVE NO. 1 CONSOLE BOX DUCT 
    1. Remove the No. 1 console box duct as shown in the illustration.
      GTY921376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  29. REMOVE NO. 3 DASH PANEL INSULATOR PAD 
    1. Cut each claw of the 2 clips and remove the No. 3 dash panel insulator pad.
      GTY914267Courtesy 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.
  30. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 

    See step  29 [04/2018 - 08/2020], or see step  33[08/2020 - 08/2021]

  31. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. Remove the bolt (A) and disconnect the earth wire.
      GTY879160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Earth Wire
      *b Relay Block Holder
      Bolt (A)
      Bolt (B)
    2. Remove the bolt (B).
    3. Disengage each clamp to separate the relay block holder.
    4. Remove the bolt, screw, nut and No. 2 instrument panel brace sub-assembly.
      GTY934142Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Screw
      Nut
  32. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY 
    1. Disengage each clamp.
      GTY881094Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut
    2. Remove the bolt, nut and No. 3 instrument panel to cowl brace sub-assembly.
  33. REMOVE HYBRID VEHICLE CONTROL ECU 

    Refer to PROCEDURE - Step 3

  34. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU 

    Refer to PROCEDURE - Step 3

  35. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY WITH AIR CONDITIONER UNIT ASSEMBLY 

    See step  33[04/2018 - 08/2020], or see step  38[08/2020 - 08/2021]

  36. REMOVE AIR CONDITIONER UNIT ASSEMBLY 
    1. Remove the 3 bolts.
      GTY925607Courtesy 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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