2008 Toyota Prius BaseFACTORY OEM SERVICE PROCEDURE

Throttle Body: Installation

  1. INSTALL THROTTLE BODY ASSEMBLY WITH MOTOR 
    1. Install a new gasket to the intake manifold.
      Fig 1: Locating Intake Manifold Gasket
      G05189007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the throttle with motor body with the bolt and 2 nuts.

      Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) 

      Fig 2: Locating Motor Body Bolts
      G05189006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the throttle position sensor connector.
    4. Connect the throttle control motor connector.
      Fig 3: Locating Throttle Position Sensor Connector
      G05189005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Connect the No. 2 water by-pass hose.
    6. Connect the water by-pass hose.
      Fig 4: Locating No. 2 Water By-Pass Hose
      G05189004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Connect the No. 1 fuel vapor feed hose.
    8. Connect the No. 2 ventilation hose.
    9. Connect the ventilation hose.
      Fig 5: Locating No. 1 Fuel Vapor Feed Hose
      G05189003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL AIR CLEANER ASSEMBLY 
    1. Install the air cleaner with the 2 bolts.

      Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) 

    2. Tighten the hose clamp bolt.

      Torque: 3.0 N*m (31 kgf*cm, 27 in.*lbf) 

    3. Connect the No. 1 air cleaner inlet, and tighten the hose clamp bolt.

      Torque: 3.0 N*m (31 kgf*cm, 27 in.*lbf) 

    4. Connect the MAF meter connector.
      Fig 6: Locating Hose Clamp Bolt
      G05189002Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  4. ADD ENGINE COOLANT  (See COOLANT )
  5. INSPECT FOR COOLANT LEAK (for Engine)  (See ON-VEHICLE INSPECTION )
  6. INSTALL ENGINE UNDER COVER LH 
  7. INSTALL RADIATOR SUPPORT OPENING COVER 
    1. Install the cover with the 6 clips.
  8. PERFORM INITIALIZATION 
    1. Perform initialization (see INITIALIZATION ).
      NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
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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