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Home >> Toyota >> 2021 >> Mirai Limited >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System - Service Information (1 Of 3) >> Air Conditioning Unit >> Removal [11/2021 - 12/2022] >> Procedure

Removal [11/2021 - 12/2022]: Procedure

  1. CAUTIONS FOR COOLANT (TOYOTA GENUINE FC STACK COOLANT (Pre-mixed)) 

    Refer to PRECAUTION [11/2020 - ]

  2. REMOVE RADIATOR COVER PLATE 

    Refer to PROCEDURE - Step 6

  3. REMOVE UPPER RADIATOR SUPPORT SEAL 

    Refer to PROCEDURE - Step 5

  4. REMOVE LOWER RADIATOR AIR DEFLECTOR 

    Refer to PROCEDURE - Step 7

  5. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    See step  4

  6. REMOVE FRONT COMPARTMENT UNDER COVER 

    Refer to PROCEDURE - Step 18

  7. REMOVE FRONT LOWER SUSPENSION MEMBER PROTECTOR 

    Refer to PROCEDURE - Step 19

  8. REMOVE FRONT COMPARTMENT UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 20

  9. DRAIN COOLANT (TOYOTA GENUINE FC STACK COOLANT (Pre-mixed)) 

    Refer to PROCEDURE - Step 6

  10. REMOVE FRONT WIPER MOTOR AND LINK 

    Refer to REMOVAL [11/2020 - ]

  11. REMOVE COWL VENTILATOR SPLASH SHIELD LH 
    1. GTY991912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE HOLE PLUG 
    1. GTY992693Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. DISCONNECT NO. 1 BATTERY PACK WIRE 
    1. GTY992842Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. DISCONNECT FLOOR UNDER WIRE 
    1. GTY992837Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. DISCONNECT FC AIR COMPRESSOR MOTOR CABLE ASSEMBLY 
    1. GTY992834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. DISCONNECT FC CONVERTER POWER OUTLET CABLE (INVERTER WITH CONVERTER ASSEMBLY) 
    1. GTY992840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. DISCONNECT SUCTION HOSE SUB-ASSEMBLY A 
    1. GTY1168929Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
      1. Remove the bolt.
      2. Rotate the 1-point tightening plate and disconnect the suction hose sub-assembly A.
      3. Remove the O-ring from the suction pipe sub-assembly A.
        NOTE:

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

  18. DISCONNECT NO. 1 LIQUID TUBE 
    1. GTY992045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the No. 1 liquid tube.
      2. Remove the O-ring from the No. 1 liquid tube.
        NOTE:

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

  19. REMOVE COOLER PIPE GROMMET 
    1. GTY991911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. DISCONNECT WATER HOSE SUB-ASSEMBLY E 
    1. GTY991921Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using pliers, grip the claws of the clip and slide the clip to disconnect the water hose sub-assembly E.
        NOTE:
        • Do not apply excessive force to the water hose sub-assembly E.
        • Prepare a drain pan or cloth in case the coolant leaks.
  21. DISCONNECT WATER HOSE SUB-ASSEMBLY C 
    1. GTY992810Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using pliers, grip the claws of the clip and slide the clip to disconnect the water hose sub-assembly C.
        NOTE:
        • Do not apply excessive force to the water hose sub-assembly C.
        • Prepare a drain pan or cloth in case the coolant leaks.
  22. REMOVE GROMMET 
    1. GTY992697Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. REMOVE FRONT SEAT ASSEMBLY LH 

    Refer to REMOVAL [11/2021 - 12/2022]

  24. REMOVE FRONT SEAT ASSEMBLY RH 
    1. Use the same procedure described for the LH side.
  25. REMOVE INSTRUMENT PANEL SAFETY PAD 

    Refer to REMOVAL [11/2021 - 12/2022]

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

    Refer to REMOVAL [11/2021 - 12/2022]

  27. REMOVE STEERING COLUMN ASSEMBLY 
  28. REMOVE REAR DOOR SCUFF PLATE INSIDE LH 

    Refer to PROCEDURE - Step 4

  29. REMOVE FRONT DOOR OPENING TRIM WEATHERSTRIP LH 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 HINT: 
    Remove the rear side of the front door opening trim weatherstrip LH so that the lower center pillar garnish LH can be removed.
    Refer to PROCEDURE - Step 2
  30. REMOVE REAR DOOR OPENING TRIM WEATHERSTRIP LH 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 HINT: 
    Remove the front side of the rear door opening trim weatherstrip LH so that the lower center pillar garnish LH can be removed.
    Refer to PROCEDURE - Step 2
  31. REMOVE LOWER CENTER PILLAR GARNISH LH 

    Refer to PROCEDURE - Step 18

  32. REMOVE REAR DOOR SCUFF PLATE INSIDE RH 
    1. Use the same procedure described for the LH side.
  33. REMOVE FRONT DOOR OPENING TRIM WEATHERSTRIP RH 
    1. Use the same procedure described for the LH side.
  34. REMOVE REAR DOOR OPENING TRIM WEATHERSTRIP RH 
    1. Use the same procedure described for the LH side.
  35. REMOVE LOWER CENTER PILLAR GARNISH RH 
    1. Use the same procedure described for the LH side.
  36. REMOVE ACCELERATOR PEDAL PAD 

    Refer to PROCEDURE - Step 2

  37. REMOVE ACCELERATOR PEDAL ASSEMBLY 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 3
  38. REMOVE AIR DUCT PLUG 
    1. GTY991160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw and remove the 2 air duct plugs.
    2. Use the same procedure for the other side.
  39. REMOVE REAR NO. 5 AIR DUCT 
    1. GTY991457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
    2. Use the same procedure for the other side.
  40. REMOVE NO. 2 FLOOR CARPET HOOK 
    1. GTY990411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using a clip remover with its tip wrapped with protective tape, detach the clamp and remove the 3 No. 2 floor hooks.
    2. Use the same procedure for the other side.
  41. REMOVE FRONT FLOOR FRONT CARPET ASSEMBLY 
    1. Fig 1: Front Floor Front Carpet Assembly (LH) Removal Sequence
      GTY992057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Pull Out Fold Up
      Fastener - -
      1. Using a clip remover, remove the clip.
      2. Detach the claw.
      3. Detach the 3 fasteners.
      4. Remove some of the front floor front carpet assembly in the order shown in the illustration until the rear floor mat LH can be removed.
    2. Fig 2: Front Floor Front Carpet Assembly (RH) Removal Sequence
      GTY992787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Pull Out Fold Up
      Fastener - -
      1. Using a clip remover, remove the clip.
      2. Detach the claw.
      3. Detach the fastener.
      4. Remove some of the front floor front carpet assembly in the order shown in the illustration until the rear floor mat RH can be removed.
  42. REMOVE REAR NO. 2 AIR DUCT 
    1. GTY991612Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
  43. REMOVE REAR NO. 1 AIR DUCT 
    1. GTY992119Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
  44. REMOVE FRONT FLOOR MAT RH 
    1. GTY990887Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  45. REMOVE REAR NO. 4 AIR DUCT 
    1. GTY990408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
  46. REMOVE REAR NO. 3 AIR DUCT 
    1. GTY991936Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
  47. REMOVE FRONT FLOOR MAT LH 
    1. GTY993003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  48. REMOVE NO. 3 AIR DUCT SUB-ASSEMBLY 
    1. GTY991907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
      1. Using a clip remover, remove the clip and No. 3 air duct sub-assembly.
  49. REMOVE EV CONTROL ECU WITH EV CONTROL ECU BRACKET 

    Refer to PROCEDURE - Step 6

  50. REMOVE PASSENGER SIDE JUNCTION BLOCK ASSEMBLY 
    1. GTY993108Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction Connector
      Lever Connector Nut
      1. Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw.
      2. Disconnect the 2 lever connectors and 2 connectors.
      3. Remove the 2 nuts and passenger side junction block assembly.
    2. GTY991863Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
      1. Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw.
      2. Disconnect the 2 lever connectors.
      3. Detach the clamp and claw.
  51. DISCONNECT FRONT COMPARTMENT WIRE MAIN 
    1. GTY993010Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  52. REMOVE SHIFT CONTROL ECU 

    Refer to PROCEDURE - Step 4

  53. REMOVE NO. 1 SEMICONDUCTOR POWER INTEGRATION ECU 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 4
  54. REMOVE WIRING HARNESS CLAMP BRACKET 
    1. GTY992853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  55. REMOVE STEREO COMPONENT EQUALIZER ASSEMBLY 

    Refer to PROCEDURE - Step 3

  56. REMOVE NO. 5 HEATER TO REGISTER DUCT 
    1. GTY991971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using a clip remover, remove the 3 clips and No. 5 heater to register duct.
  57. REMOVE NO. 2 SIDE DEFROSTER NOZZLE DUCT 
    1. GTY992965Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using a clip remover, remove the clip.
      2. Detach the clamp and claw and remove the No. 2 side defroster nozzle duct.
  58. REMOVE NAVIGATION ECU ASSEMBLY WITH BRACKET 

    Refer to PROCEDURE - Step 2

  59. REMOVE LOWER DEFROSTER NOZZLE ASSEMBLY 
    1. GTY991786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  60. REMOVE DCM (TELEMATICS TRANSCEIVER) WITH BRACKET 

    Refer to PROCEDURE - Step 8

  61. REMOVE NO. 4 HEATER TO REGISTER DUCT 
    1. GTY993001Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using a clip remover, remove the 2 clips and No. 4 heater to register duct.
  62. REMOVE NO. 1 INSTRUMENT PANEL SHIFT MOUNTING BRACKET 
    1. GTY991941Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction (1) Remove in this Direction (2)
  63. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. GTY992206Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt Nut
      Screw - -
  64. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. GTY992909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt Nut
      Screw - -
  65. REMOVE NO. 3 HEATER TO REGISTER DUCT 
    1. GTY991981Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using a clip remover, remove the 3 clips and No. 3 heater to register duct.
  66. REMOVE NO. 1 HEATER TO REGISTER DUCT 
    1. GTY992637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Clip Screw
      1. Using a clip remover, remove the 2 clips.
      2. Remove the screw and No. 1 heater to register duct.
  67. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY 
    1. GTY992980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt Nut
  68. REMOVE DRIVER SIDE JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 6
  69. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY WITH HEATER BRACKET 

    Refer to PROCEDURE - Step 2

  70. DISCONNECT INSTRUMENT PANEL WIRE 

    HINT: 

    The illustration is an example, so the details may differ.

    1. GTY1168778Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Connector Nut
    2. GTY992851Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  71. REMOVE NO. 4 COOLER UNIT DRAIN HOSE 
    1. GTY992852Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  72. REMOVE NO. 3 COOLER UNIT DRAIN HOSE 
    1. GTY992850Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  73. REMOVE COOLER UNIT DRAIN HOSE GROMMET 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:

    After removing the cooler unit drain hose grommet, replace it with a new one to prevent water from entering.
    1. GTY993180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A for Driver Side *B for Passenger Side
  74. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY WITH AIR CONDITIONING UNIT ASSEMBLY 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • Be sure to support the air conditioning unit assembly when removing it because failure to do so may cause the bracket of the air conditioning unit assembly to break.
    • Do not hold the air conditioning harness assembly. Otherwise, static electricity from the technician may damage the air conditioning harness assembly.
    • Do not hold the heater core or pipe of the heater radiator unit sub-assembly. Otherwise, the pipe may detach, the clamp may be damaged, or the crimped areas of the heater core and pipe of the heater radiator unit sub-assembly may be damaged, causing coolant to leak.
    • Do not hold the air conditioning radiator damper servo sub-assembly, blower damper servo sub-assembly or link. Otherwise, the servo motor may become misaligned, causing abnormal operation noise, temperature control defects, or air leaks due to sealing defects in the doors.
    • Do not hold the door. Doing so may cause air leaks due to closing defects resulting from excessive opening/closing. Also, keep the door free from oil and grease.
    1. GTY1168949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Bolt (A) - -
      Bolt Nut
      1. Using a universal socket wrench 12 mm, remove the 2 bolts (A).
      2. Remove the 6 bolts and nut.
    2. GTY992054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction - -
      1. Remove the instrument panel reinforcement assembly with air conditioning unit assembly from the guide as shown in the illustration.
      2. Detach the clamp and disconnect the connector.
      3. Remove the instrument panel reinforcement assembly with air conditioning unit assembly from the vehicle.
  75. REMOVE IMMOBILIZER CODE ECU (ID CODE BOX) 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    		 Refer to PROCEDURE - Step 3
  76. REMOVE AIR CONDITIONER UNIT ASSEMBLY 
    1. GTY992849Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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