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Home >> Lexus >> 2012 >> IS F >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Intake System / Exhaust System (Service Information) >> Intake Manifold >> Removal >> Removal
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Intake Manifold: Removal: Removal

  1. PRECAUTION  . Refer to REMOVAL - Step 1
  2. DISCHARGE FUEL SYSTEM PRESSURE 

    Refer to PRECAUTION

  3. 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.

  4. REMOVE V-BANK COVER SUB-ASSEMBLY  . Refer to REMOVAL - Step 2
  5. REMOVE COOL AIR INTAKE DUCT SEAL  . Refer to REMOVAL - Step 3
  6. REMOVE ENGINE ROOM SIDE COVER LH  . Refer to REMOVAL - Step 4
  7. REMOVE ENGINE ROOM SIDE COVER RH  . Refer to REMOVAL - Step 5
  8. REMOVE NO. 1 AIR CLEANER INLET  . Refer to REMOVAL - Step 20
  9. REMOVE AIR CLEANER CAP SUB-ASSEMBLY  . Refer to REMOVAL - Step 4
  10. REMOVE AIR CLEANER CASE SUB-ASSEMBLY  . Refer to REMOVAL - Step 22
  11. REMOVE ENGINE UNDER COVER 
  12. REMOVE REAR ENGINE UNDER COVER RH 
  13. REMOVE NO. 2 ENGINE UNDER COVER 
  14. DRAIN ENGINE COOLANT  . Refer to REPLACEMENT - Step 3
  15. REMOVE THROTTLE BODY ASSEMBLY  . Refer to REMOVAL - Step 5
  16. SEPARATE OIL COOLER TUBE SUB-ASSEMBLY 
    1. Remove the 2 bolts and separate the oil cooler tube sub-assembly.
      Fig 1: Locating Oil Cooler Tube Bolts
      GTY102779Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. DISCONNECT ENGINE WIRE 

    HINT: 

    Secure disconnected harnesses, etc. with tape or equivalent so that they do not interfere.

    1. Disconnect the engine wire.
      1. Remove the 2 bolts from the No. 3 exhaust manifold heat insulator. (A)
        Fig 2: Locating No. 3 Exhaust Manifold Heat Insulator
        GTY148858Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disconnect the starter connector. (B)
      3. Disconnect the 2 connectors and then remove the nut. (C)
      4. Disconnect the generator connector and 2 clamps. (D)
      5. Remove the bolt, nut and separate the oil cooler tube sub-assembly. (E)
      6. Remove the nut and disconnect the harness from the +B terminal. (F)
      7. Disconnect the 9 connectors and 3 clamps. (G)
      8. Remove the nut and disconnect the wire harness from the relay box. (H)
        Fig 3: Locating Engine Wire Connectors And Bolts
        GTY137308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      9. Disconnect the 4 injector driver connectors. (I)

        HINT: 

        To disconnect the injector driver connectors, push the claw downward and move the lock lever to release the lock.

      10. Remove the bolt and ground cable. (J)
      11. Disconnect the 4 connectors and 5 clamps. (K)
      12. Remove the 4 nuts and disconnect the engine wire. (L)
  18. REMOVE VACUUM SWITCHING VALVE ASSEMBLY 
    1. Disconnect the fuel vapor feed hose from the intake air surge tank assembly.
      Fig 4: Locating Vacuum Switching Valve Assembly And Bolts
      GTY148859Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the No. 2 fuel vapor feed hose from the vacuum switching valve assembly.
    3. Remove the bolt and vacuum switching valve assembly.
    4. Disconnect the ventilation hose.
  19. REMOVE INJECTOR DRIVER 
    1. Disconnect the 4 injector driver connectors.
      Fig 5: Locating Injector Driver And Nuts
      GTY125124Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      To disconnect the injector driver connectors, push the claw downward and move the lock lever to release the lock.

    2. Remove the 8 nuts and 2 injector drivers.
    3. Remove the bolt and No. 2 V-bank cover bracket sub-assembly.
  20. REMOVE WATER BY-PASS PIPE SUB-ASSEMBLY 
    1. Slide the 5 clamps, and disconnect the heater inlet water hose, heater outlet water hose, water inlet hose, water outlet hose, and water by-pass hose from the water by-pass pipe.
      Fig 6: Locating Water By-Pass Pipe Clamps And Bolts
      GTY127401Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 bolts and water by-pass pipe.
  21. DISCONNECT VACUUM HOSE ASSEMBLY  . Refer to REMOVAL - Step 30
  22. DISCONNECT NO. 3 FUEL HOSE  . Refer to REMOVAL - Step 32
  23. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY 
    1. Disconnect the 8 injector connectors.
    2. Remove the 4 bolts and 2 wire harnesses.
    3. Remove the 4 bolts and injectors with delivery pipe assembly and 4 spacers.
      Fig 7: Locating Fuel Delivery Pipe Bolts
      GTY141416Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. REMOVE INTAKE AIR SURGE TANK ASSEMBLY 
    1. Remove the 8 bolts, 2 nuts and intake air surge tank assembly.
      Fig 8: Locating Intake Air Surge Tank Assembly Bolts And Nuts
      GTY128062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 gaskets from the intake air surge tank assembly.
    3. Remove the bolt and V-bank cover bracket sub-assembly.
      Fig 9: Locating V-Bank Cover Bracket Sub-Assembly Bolt
      GTY141667Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the bolt and union to check valve hose bracket.
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