2006 Lexus GS 430FACTORY OEM SERVICE PROCEDURE

Throttle Body: Installation

  1. INSTALL THROTTLE BODY 
    1. Install a new gasket and the throttle body with the 2 bolts and 2 nuts.
      Fig 1: Identifying A New Gasket And Throttle Body With Bolts And Nuts
      G04027221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf) 

    2. Connect the 2 water bypass hoses.
    3. Connect the connector and wire.
    4. Connect the PCV hose.
      Fig 2: Identifying Connector And Wire
      G04027222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL INTAKE AIR CONNECTOR PIPE 
    1. Install the connector pipe with the bolt and 2 hose clamps.
      Fig 3: Identifying Connector Pipe With Hose Clamps
      G04027223Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 4.0 N*m (41 kgf*cm, 35 ft.*lbf) for hose clamps 

      5.0 N*m (51 kgf*cm, 44 ft.*lbf) for bolt 

    2. Connect the air hose and No. 1 ventilation hose.
  3. INSTALL NO. 1 AIR CLEANER INLET (  4  ) 
  4. INSTALL V-BANK COVER 
    1. Install the V-bank cover with the 2 nuts.

      Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) 

  5. INSTALL ENGINE ROOM SIDE COVER LH (  6  ) 
  6. INSTALL ENGINE ROOM SIDE COVER RH (  7  ) 
  7. INSTALL COOL AIR INTAKE DUCT SEAL (  8  ) 
  8. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  9. PERFORM INITIALIZATION 
    1. Perform initialization (INITIALIZATION ).
      NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
  10. ADD ENGINE COOLANT ( ON-VEHICLE INSPECTION  ) 
  11. CHECK FOR ENGINE COOLANT LEAKS 
    1. Check for engine coolant leaks (ON-VEHICLE INSPECTION ).
Factory Service Tools

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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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