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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Emission Control System (3UR-FBE) (Service Information)) >> Air Switching Valve >> Removal [08/2015 - 08/2018] >> Procedure

Removal [08/2015 - 08/2018]: Procedure

WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY 

    (Refer to REMOVAL [08/2015 - 08/2018] )

  2. REMOVE INTAKE MANIFOLD 

    (Refer to REMOVAL [08/2015 - 08/2018] )

  3. REMOVE FAN SHROUD 

    (Refer to REMOVAL [08/2015 - 08/2018] )

  4. REMOVE NO. 9 WATER BY-PASS HOSE 
    1. GTY554408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Slide the 2 clamps and remove the No. 9 water by-pass hose from the separator case and front water by-pass joint.

      TEXT IN ILLUSTRATION

      *1 No. 9 Water By-pass Hose
      *2 No. 10 Water By-pass Hose
  5. REMOVE NO. 10 WATER BY-PASS HOSE 
    1. Slide the 2 clamps and remove the No. 10 water by-pass hose from the separator case and front water by-pass joint.
  6. REMOVE NO. 1 WATER BY-PASS HOSE 
    1. GTY568209Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Slide the 2 clamps and remove the No. 1 water by-pass hose from the front water by-pass joint and water inlet housing.

      TEXT IN ILLUSTRATION

      *1 No. 1 Water By-pass Hose
      *2 No. 2 Water By-pass Hose
  7. DISCONNECT NO. 2 WATER BY-PASS HOSE 
    1. Slide the clamp and disconnect the No. 2 water by-pass hose from the front water by-pass joint.
  8. DISCONNECT WATER BY-PASS PIPE HOSE (w/ Trailer Towing System) 
    1. Remove the 3 bolts and disconnect the water by-pass pipe hose.
      GTY611620Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE NO. 2 CYLINDER HEAD COVER 
    GTY577665Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the No. 2 cylinder head cover.
  10. DISCONNECT FUEL TUBE CLAMP 
    1. Disconnect the fuel tube clamp from the bracket.
      GTY608815Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. REMOVE NO. 1 ENGINE COVER 
    GTY125879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the No. 1 engine cover.
  12. REMOVE FRONT WATER BY-PASS JOINT 
    1. Disconnect the engine coolant temperature sensor connector.
    2. Remove the 4 nuts, front water by-pass joint and 2 gaskets.
      GTY578727Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE NO. 3 WATER BY-PASS PIPE 
    GTY577662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT: 

    Perform this procedure only when replacement of the No. 3 water by-pass pipe is necessary.

    1. Remove the bolt and No. 3 water by-pass pipe.
  14. REMOVE AIR PIPE SUB-ASSEMBLY 
    1. Slide the 2 clamps and disconnect the No. 2 air injection system hose and No. 3 air injection system hose.
      GTY596134Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 No. 2 air injection system hose
      *2 No. 3 air injection system hose
    2. Disconnect the air switching valve connector.
    3. Disconnect the air switching valve connector clamp holder.
    4. Using a clip remover, detach the wire harness claw.
    5. Remove the 2 bolts and air pipe.
      GTY589048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Disconnect the 2 No. 1 air hoses from the air switching valve assembly.
  15. REMOVE AIR SWITCHING VALVE ASSEMBLY 
    1. Disconnect the knock sensor connector.
      GTY611362Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt and bracket.
    3. Disconnect the 2 air switching valve connectors.
    4. Remove the 3 bolts and air switching valve assembly.
      GTY608818Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. REMOVE NO. 2 AIR TUBE 
    1. Remove the 2 bolts, No. 2 air tube and gasket.
      GTY125880Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be careful not to damage the installation surface of the gaskets.

  17. REMOVE NO. 3 AIR TUBE 
    1. Remove the 2 bolts, No. 3 air tube and gasket.
      GTY141918Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be careful not to damage the installation surface of the gaskets.

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