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Home >> Toyota >> 2019 >> Sienna Limited, AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Service Information) >> Front Air Conditioning Unit >> Removal [08/2016 - ] >> Procedure

Removal [08/2016 - ]: Procedure

  1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM 

    See step  1

  2. REMOVE V-BANK COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 18

  3. REMOVE NO. 1 ENGINE UNDER COVER 

    Refer to PROCEDURE - Step 4

  4. DRAIN ENGINE COOLANT 

    Refer to PROCEDURE - Step 2

  5. REMOVE INTAKE AIR SURGE TANK ASSEMBLY 

    Refer to REMOVAL [08/2016 - ]

  6. DISCONNECT HEATER WATER OUTLET HOSE A 
    GTY711097Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Slide the hose clip to disconnect the heater water outlet hose A.
  7. DISCONNECT HEATER WATER INLET HOSE A 
    GTY711116Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Slide the hose clip to disconnect the heater water inlet hose A.
  8. DISCONNECT AIR CONDITIONER TUBE AND ACCESSORY ASSEMBLY 
    GTY300316Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the bolt.
    2. Turn the hook connector counterclockwise and disconnect the air conditioner tube and accessory assembly.
    3. Remove the 2 O-rings from the air conditioner tube and accessory assembly.
      NOTE:

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

  9. REMOVE INSTRUMENT PANEL SUB-ASSEMBLY 

    Refer to REMOVAL [12/2015 - 11/2017] , or refer to REMOVAL [11/2017 - ]

  10. REMOVE NO. 3 AIR DUCT SUB-ASSEMBLY 
    GTY306560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the clip.
    2. Disengage the 3 claws to remove the No. 3 air duct sub-assembly.
  11. REMOVE STEERING COLUMN ASSEMBLY 

    Refer to REMOVAL [12/2015 - ]

  12. REMOVE ECU INTEGRATION BOX RH 

    Refer to PROCEDURE - Step 6 [12/2015 - 11/2017] , or refer to PROCEDURE - Step 9 [11/2017 - ]

  13. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY 

    See step  2

  14. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    Refer to PROCEDURE - Step 2

  15. REMOVE CENTER AIRBAG SENSOR ASSEMBLY 

    Refer to PROCEDURE - Step 11

  16. DISCONNECT FRONT DOOR WIRE LH 
    GTY300311Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 3 connectors.
  17. DISCONNECT FRONT DOOR WIRE RH 
    GTY478784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 3 connectors.
  18. REMOVE FRONT DOOR PANEL SUB-ASSEMBLY LH 
    GTY300229Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the bolt from the front door check.
    2. Remove the 2 bolts from the front door upper hinge.
    3. Remove the 2 bolts from the front door lower hinge, and then remove the front door panel sub-assembly LH from the vehicle.
      NOTE:

      Be careful not to cut, break, or damage the front door wire.

  19. REMOVE FRONT DOOR PANEL SUB-ASSEMBLY RH 

    HINT: 

    Use the same procedure as for the LH side.

  20. REMOVE FRONT FLOOR CARPET ASSEMBLY 

    Refer to REMOVAL [12/2015 - ]

  21. REMOVE REAR NO. 2 AIR DUCT 
    GTY306572Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the clip.
    2. Disengage the 2 claws to remove the rear No. 2 air duct.
  22. REMOVE REAR NO. 4 AIR DUCT 

    HINT: 

    Use the same procedure as for the No. 2 air duct.

  23. REMOVE NO. 5 INSTRUMENT PANEL BRACKET 
    GTY300228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 3 connectors.

      HINT: 

      If the vehicle is equipped with USB audio system, disconnect the connectors.

    2. Remove the 3 nuts and No. 5 instrument panel bracket.
  24. REMOVE TELEVISION BRACKET 
    1. Remove the 4 bolts and television bracket.
      GTY478783Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  25. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    GTY300233Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the connector.
    2. Disengage the 5 clamps.
    3. Remove the bolt to disconnect the ground wire.
    4. Remove the 2 bolts, 2 nuts and screw to remove the No. 1 instrument panel brace sub-assembly.
      GTY300232Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    GTY300234Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the connector.
    2. Disengage the 5 clamps.
    3. Remove the bolt to disconnect the ground wire.
    4. Remove the bolt, 2 nuts and screw to remove the No. 2 instrument panel brace sub-assembly.
      GTY306571Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. SEPARATE NO. 1 AIR DUCT SUB-ASSEMBLY 
    GTY306570Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 3 nuts to separate the No. 1 air duct sub-assembly.
  28. SEPARATE INSTRUMENT PANEL WIRE 
    1. Disconnect the connectors.
      GTY478785Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt to disconnect the ground wire.
    3. Disengage the clamps to disconnect the instrument panel wire.
  29. REMOVE INSTRUMENT PANEL REINFORCEMENT 
    1. Remove the 3 bolts and nut.
      GTY698622Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 caps.
      GTY300313Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 2 caps.
      GTY300314Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 5 bolts as shown in the illustration.
      GTY715817Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Movable Collar *2 Body
      *3 Instrument Panel Reinforcement - -
      *a Step 1 *b Step 2
      *c Step 3 *d Step 4
    5. Remove the instrument panel reinforcement with air conditioning unit assembly.
  30. REMOVE AIR CONDITIONING UNIT 
    GTY478786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 3 screws and air conditioning unit.
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