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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Service Information) (2 Of 2) >> Front Air Conditioning Unit >> Removal [08/2019 - ] >> Procedure

Removal [08/2019 - ]: Procedure

  1. TABLE OF BOLT, SCREW AND NUT 

    Refer to:PROCEDURE - Step 1

  2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    See step  1

  3. PRECAUTION 
    NOTE:

    After turning the engine switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work.

    Refer to:PRECAUTION [08/2019 - ]

  4. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    WARNING:

    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    NOTE:

    When disconnecting the cable some systems need to be initialized after the cable is reconnected.

    Refer to:INITIALIZATION [08/2019 - ]

  5. REMOVE NO. 1 ENGINE UNDER COVER 

    Refer to

    PROCEDURE - Step 2 [08/2019 - 08/2021]

    PROCEDURE - Step 2 [08/2021 - ]

  6. DRAIN ENGINE COOLANT 

    Refer to:PROCEDURE - Step 2

  7. REMOVE COOLER REFRIGERANT LIQUID PIPE B 
    GTY866079Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the bolt, and slide the hook connector.
    2. Disconnect the cooler refrigerant liquid pipe B.
      GTY745964Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Disconnect Cooler Refrigerant Liquid Pipe B by Hand
      NOTE:
      • Do not use a screwdriver or similar tool to disconnect the cooler refrigerant liquid pipe B.
      • Seal the openings of the disconnected parts using vinyl tape to prevent moisture and foreign matter from entering them.
    3. Remove the 2 O-rings from the cooler refrigerant liquid pipe B.
  8. REMOVE HEATER WATER INLET HOSE A 
    GTY222910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the heater water inlet hose A.
      NOTE:
      • Do not apply excessive force to the heater water outlet hose A.
      • Prepare a drain pan or cloth in case the coolant leaks.
  9. REMOVE HEATER WATER OUTLET HOSE A 
    GTY222909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the heater water outlet hose A.
      NOTE:
      • Do not apply excessive force to the rear heater water inlet hose A.
      • Prepare a drain pan or cloth in case the coolant leaks.
  10. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH 

    Refer to:PROCEDURE - Step 1

  11. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH 

    Refer to:PROCEDURE - Step 2

  12. REMOVE FRONT FENDER TO COWL SIDE SEAL RH 

    Refer to:PROCEDURE - Step 3

  13. REMOVE FRONT FENDER TO COWL SIDE SEAL LH 

    Refer to:PROCEDURE - Step 4

  14. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 5

  15. REMOVE FRONT WIPER MOTOR AND LINK ASSEMBLY 

    Refer to:PROCEDURE - Step 6

  16. REMOVE LOWER NO. 2 STEERING WHEEL COVER 

    Refer to:PROCEDURE - Step 4

  17. REMOVE LOWER NO. 3 STEERING WHEEL COVER 

    Refer to:PROCEDURE - Step 3

  18. REMOVE STEERING PAD 

    Refer to:PROCEDURE - Step 5

  19. REMOVE STEERING WHEEL ASSEMBLY 

    Refer to:PROCEDURE - Step 6

  20. REMOVE LOWER STEERING COLUMN COVER 

    Refer to:PROCEDURE - Step 8

  21. REMOVE UPPER STEERING COLUMN COVER 

    Refer to:PROCEDURE - Step 9

  22. REMOVE COMBINATION SWITCH WITH SPIRAL CABLE 

    Refer to:PROCEDURE - Step 10

  23. REMOVE FRONT DOOR SCUFF PLATE LH 

    HINT: 

    Use the same procedure for the RH side.

    Refer to:PROCEDURE - Step 11

  24. REMOVE COWL SIDE TRIM BOARD LH 

    HINT: 

    Use the same procedure for the RH side.

    Refer to:PROCEDURE - Step 13

  25. REMOVE FRONT DOOR OPENING TRIM WEATHERSTRIP LH 

    HINT: 

    Use the same procedure for the RH side.

    Refer to:PROCEDURE - Step 15

  26. REMOVE FRONT PILLAR GARNISH LH 

    HINT: 

    Use the same procedure for the RH side.

    Refer to:PROCEDURE - Step 25

  27. REMOVE INSTRUMENT SIDE PANEL LH 

    Refer to:PROCEDURE - Step 15

  28. REMOVE HOOD LOCK CONTROL LEVER SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 3

  29. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY LH 

    Refer to:PROCEDURE - Step 17

  30. REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY 

    Refer to:PROCEDURE - Step 7

  31. REMOVE SHIFT LEVER KNOB SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 8

  32. REMOVE UPPER CONSOLE PANEL SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 9

  33. REMOVE REAR CONSOLE BOX POCKET 

    Refer to:PROCEDURE - Step 11

  34. REMOVE REAR UPPER CONSOLE PANEL SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 10

  35. REMOVE CONSOLE BOX CARPET 

    Refer to:PROCEDURE - Step 12

  36. REMOVE REAR CONSOLE BOX ASSEMBLY 

    Refer to:PROCEDURE - Step 13

  37. REMOVE FRONT CONSOLE BOX 

    Refer to:PROCEDURE - Step 14

  38. REMOVE INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 26

  39. REMOVE COMBINATION METER ASSEMBLY 

    Refer to:PROCEDURE - Step 8

  40. REMOVE CENTER LOWER INSTRUMENT PANEL FINISH PANEL 

    Refer to:PROCEDURE - Step 28

  41. REMOVE INTEGRATION CONTROL AND PANEL ASSEMBLY 

    Refer to:PROCEDURE - Step 16

  42. REMOVE RADIO AND DISPLAY RECEIVER ASSEMBLY WITH NAVIGATION ECU (w/ Navigation System) 

    Refer to:PROCEDURE - Step 11

  43. REMOVE RADIO AND DISPLAY RECEIVER ASSEMBLY WITH BRACKET (w/o Navigation System) 

    Refer to:PROCEDURE - Step 11

  44. REMOVE INSTRUMENT SIDE PANEL RH 

    Refer to:PROCEDURE - Step 36

  45. REMOVE FRONT DOOR SCUFF PLATE RH 

    Refer to:PROCEDURE - Step 11

  46. REMOVE COWL SIDE TRIM BOARD RH 

    Refer to:PROCEDURE - Step 13

  47. REMOVE FRONT DOOR OPENING TRIM WEATHERSTRIP RH 

    Refer to:PROCEDURE - Step 23

  48. REMOVE FRONT PILLAR GARNISH RH 

    Refer to:PROCEDURE - Step 25

  49. REMOVE NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 37

  50. REMOVE LOWER INSTRUMENT PANEL 

    Refer to:PROCEDURE - Step 38

  51. REMOVE LOWER NO. 2 INSTRUMENT PANEL AIRBAG ASSEMBLY 

    Refer to:PROCEDURE - Step 8

  52. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY RH 

    Refer to:PROCEDURE - Step 40

  53. REMOVE NO. 2 INSTRUMENT PANEL BOX DOOR SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 41

  54. REMOVE NO. 1 INSTRUMENT PANEL SPEAKER PANEL 

    Refer to:PROCEDURE - Step 42

  55. REMOVE FRONT NO. 2 SPEAKER ASSEMBLY LH 

    Refer to:PROCEDURE - Step 6

  56. REMOVE NO. 2 INSTRUMENT PANEL SPEAKER PANEL 

    Refer to:PROCEDURE - Step 44

  57. REMOVE FRONT NO. 2 SPEAKER ASSEMBLY RH 

    Refer to:PROCEDURE - Step 5

  58. REMOVE INSTRUMENT PANEL SPEAKER PANEL SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 46

  59. REMOVE FRONT NO. 4 SPEAKER ASSEMBLY (for 14 Speakers) 

    Refer to:PROCEDURE - Step 8

  60. REMOVE FRONT SEAT HEADREST ASSEMBLY (for LH Side) 
  61. REMOVE SEAT TRACK COVER INNER LH (for LH Side) 

    Refer to:PROCEDURE - Step 3

  62. REMOVE SEAT TRACK COVER LH (for LH Side) 

    Refer to:PROCEDURE - Step 4

  63. REMOVE FRONT SEAT ASSEMBLY LH (for LH Side) 
    1. w/ Leg Support Adjustment Switch:

      Refer to:PROCEDURE - Step 5

    2. w/o Leg Support Adjustment Switch:

      Refer to:PROCEDURE - Step 6

  64. REMOVE FRONT SEAT HEADREST ASSEMBLY (for RH Side) 
  65. REMOVE INNER SEAT TRACK COVER RH (for RH Side) 

    Refer to:PROCEDURE - Step 4

  66. REMOVE OUTER SEAT TRACK COVER RH (for RH Side) 

    Refer to:PROCEDURE - Step 5

  67. REMOVE FRONT SEAT ASSEMBLY RH (for RH Side) 
    1. for Manual Seat:

      Refer to:PROCEDURE - Step 6

    2. for Power Seat, w/ Leg Support Adjustment Switch:

      HINT: 

      Use the same procedure for the RH side and LH side.

      Refer to:PROCEDURE - Step 5

    3. for Power Seat, w/o Leg Support Adjustment Switch:

      HINT: 

      Use the same procedure for the RH side and LH side.

      Refer to:PROCEDURE - Step 6

  68. REMOVE AUDIO AMPLIFIER COVER (for 14 Speakers) 

    Refer to:PROCEDURE - Step 4

  69. REMOVE STEREO COMPONENT AMPLIFIER ASSEMBLY (for 14 Speakers) 

    Refer to:PROCEDURE - Step 5

  70. REMOVE REAR NO. 3 AIR DUCT 
    GTY601854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the clip.
    2. Detach the 4 claws and remove the air duct.
  71. REMOVE REAR NO. 4 AIR DUCT 
    GTY611581Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the clip.
    2. Detach the 4 claws and remove the air duct.
  72. REMOVE NO. 3 AIR DUCT SUB-ASSEMBLY 

    Refer to:PROCEDURE - Step 19

  73. SEPARATE STEERING INTERMEDIATE SHAFT ASSEMBLY 
    GTY763974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Matchmark
    1. Put matchmarks on the steering intermediate shaft and the steering column.
    2. Remove the bolt and separate the steering intermediate shaft from the steering column.
  74. REMOVE STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column) 

    Refer to:PROCEDURE - Step 20

  75. REMOVE STEERING COLUMN ASSEMBLY (for Power Tilt and Power Telescopic Steering Column) 

    Refer to:PROCEDURE - Step 22

  76. REMOVE INSTRUMENT PANEL SUB-ASSEMBLY (for 14 Speakers) 

    Refer to:PROCEDURE - Step 50

  77. REMOVE INSTRUMENT PANEL SUB-ASSEMBLY (for 8 Speakers) 

    Refer to:PROCEDURE - Step 50

  78. DISCONNECT TRANSMISSION CONTROL CABLE ASSEMBLY 

    Refer to:PROCEDURE - Step 2

  79. REMOVE TRANSMISSION FLOOR SHIFT ASSEMBLY 

    Refer to:PROCEDURE - Step 3

  80. REMOVE REAR NO. 1 AIR DUCT 
    GTY558106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Detach the 3 claws and remove the air duct.
  81. REMOVE REAR NO. 2 AIR DUCT 
    GTY558107Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Detach the 3 claws and remove the air duct.
  82. REMOVE DRIVER SIDE JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU 

    Refer to:PROCEDURE - Step 2

  83. REMOVE NO. 1 ECU INTEGRATION BRACKET 
    1. w/ Mayday System:
      1. Disconnect the 11 connectors.
        GTY927788Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Bolt
        *b Nut
        *c Connector
      2. Remove the bolt and 2 nuts and the ECU integration bracket.
    2. w/o Mayday System:
      1. Disconnect the 5 connectors.
        GTY841927Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Bolt
        *b Nut
        *c Connector
      2. Remove the bolt and 2 nuts and the ECU integration bracket.
  84. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY 
    1. Remove the bolt and disconnect the ground wire.
      GTY924068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Bolt *b Connector
    2. Disconnect the 7 connectors and clamps and separate the wire harness.
    3. Remove the instrument panel reinforcement.
      1. for Driver Side:

        Remove the 2 caps and 3 bolts.

      2. for Passenger Side:

        Using a T40 "TORX" socket, remove the 2 "TORX" bolts.

        HINT: 

        When removing the bolts, the collars may come off with the bolts.

        GTY853026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a "TORX" Bolt *b Bolt
        *c Nut - -
      3. for Passenger Side:

        Using a 12 mm hexagon wrench, remove the 2 collars.

      4. Remove the 3 bolts, nut and instrument panel reinforcement.
  85. REMOVE FRONT AIR CONDITIONING UNIT 
    GTY906241Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Bolt
    *b Screw
    1. Remove the 3 bolts, 2 screws and the air conditioning unit.
  86. REMOVE ECU COVER 
    GTY839031Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 2 screws and ECU cover.
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