2007 Lexus GS 430FACTORY OEM SERVICE PROCEDURE

Throttle Body: Removal

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
  2. DRAIN ENGINE COOLANT (See  COOLANT  ) 
  3. REMOVE COOL AIR INTAKE DUCT SEAL (See  REMOVAL  ) 
  4. REMOVE ENGINE ROOM SIDE COVER RH (See  REMOVAL  ) 
  5. REMOVE ENGINE ROOM SIDE COVER LH (See  REMOVAL  ) 
  6. REMOVE V-BANK COVER 
    1. Remove the 2 nuts and V-bank cover.
  7. REMOVE NO. 1 AIR CLEANER INLET (See  REMOVAL  ) 
  8. REMOVE INTAKE AIR CONNECTOR PIPE 
    1. Disconnect the air hose and No. 1 ventilation hose.
    2. Loosen the 2 hose clamps and remove the intake air connector.
      Fig 1: Locating Intake Air Connector Pipe With Bolt And Hose Clamps
      G05285771Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE THROTTLE BODY 
    1. Disconnect the PCV hose.
    2. Disconnect the connectors and wire.
    3. Disconnect the 2 water bypass hoses.
      Fig 2: Locating Connector And Wire
      G05285795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 2 bolts, 2 nuts, throttle body and gasket.
      Fig 3: Locating Bolts, Nuts, Throttle Body And Gasket
      G05285796Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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