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Home >> Toyota >> 2019 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Intake / Exhaust System (1AR-FE) (Service Information) (Except Hybrid)) >> Intake Manifold >> Removal [12/2013 - ] >> Procedure

Removal [12/2013 - ]: Procedure

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  1. PRECAUTION 
    NOTE:

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

    Refer to PRECAUTION [12/2013 - 11/2016] , or refer to PRECAUTION [11/2016 - ]

  2. DISCHARGE FUEL SYSTEM PRESSURE 

    Refer to PRECAUTION [12/2013 - 11/2016] , or refer to PRECAUTION [11/2016 - ]

  3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE:

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

    Refer to INITIALIZATION [12/2013 - 11/2016] , or refer to INITIALIZATION [11/2016 - ]

  4. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [12/2013 - ]

  5. REMOVE BRAKE BOOSTER VACUUM EJECTOR 

    Refer to PROCEDURE - Step 1

  6. REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 4 , or refer to PROCEDURE - Step 4 , or refer to PROCEDURE - Step 4

  7. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY 

    Refer to REMOVAL [12/2013 - ]

  8. REMOVE NO. 1 VACUUM SWITCHING VALVE ASSEMBLY 

    Refer to PROCEDURE - Step 2

  9. REMOVE VACUUM SWITCHING VALVE ASSEMBLY (for ACIS) 
    1. GTY454983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Disconnect the union to vacuum tube hose from the vacuum hose clamp.

    2. Disengage the wire harness clamp.
    3. Disconnect the 2 vacuum hoses.
    4. Disconnect the vacuum switching valve assembly (for ACIS) connector.
    5. Remove the bolt and vacuum switching valve assembly (for ACIS) from the intake manifold.
  10. DISCONNECT NO. 2 VENTILATION HOSE 
    1. Slide the clip and disconnect the No. 2 ventilation hose from the intake manifold.
      GTY304862Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. DISCONNECT UNION TO VACUUM TUBE HOSE 
    1. Slide the clip and disconnect the union to vacuum tube hose from the intake manifold.
      GTY304863Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. DISCONNECT FUEL TUBE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 6

  13. DISCONNECT ENGINE WIRE 

    Refer to PROCEDURE - Step 9

  14. REMOVE FUEL DELIVERY PIPE 

    Refer to PROCEDURE - Step 10

  15. REMOVE INTAKE MANIFOLD 
    1. Remove the 2 bolts and 2 wire harness clamp brackets from the intake manifold.
      GTY432826Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the fuel vapor feed hose from the intake manifold.
      GTY444200Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disengage the 3 wire harness clamps.
    4. Disconnect the sensor wire connector.
    5. Remove the bolt and wire harness clamp bracket from the intake manifold.
    6. Apply positive (+) battery voltage to terminal 8 (M-) and negative (-) battery voltage to terminal 4 (M+) of the sensor wire connector to close the 4 tumble control valves (TCV).
      GTY440219Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • If this procedure is not performed, the 4 tumble control valves (TCV) may be damaged when the intake manifold is removed.
      • Apply battery voltage for 1 to 3 seconds.
      • If battery voltage is applied for more than 3 seconds, the intake air control valve actuator may be damaged.
      • Do not allow the lead wires to contact the other terminals.
    7. Remove the bolt and disconnect the wire harness.
      GTY304861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Disengage the 2 wire harness clamps.
    9. Disconnect the intake air control valve actuator (for TCV) connector.
    10. Remove the 6 bolts and intake manifold.
      GTY322155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      The 4 tumble control valves (TCV) may be damaged if they are not closed before removing the intake manifold.

      HINT: 

      Connect the battery to the terminals of the intake air control valve actuator to operate the motor and close the 4 tumble control valves (TCV).

      Refer to PROCEDURE - Step 3

    11. Remove the intake manifold gasket from the intake manifold.
      GTY322702Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    12. Disconnect the 2 vacuum hoses from the intake manifold and remove the No. 1 check valve.
      GTY313317Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    13. Remove the bolt and wire harness clamp bracket from the intake manifold.
      GTY443484Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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