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Home >> Lexus >> 2008 >> GS 450h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - System And Circuit Testing, On-Vehicle Inspection, Removal, Inspection & Installation >> Throttle Body >> Removal

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. REMOVE COOL AIR INTAKE DUCT SEAL  (See REMOVAL )
  3. DRAIN ENGINE COOLANT  (See COOLANT (FOR ENGINE) )
  4. REMOVE ENGINE ROOM SIDE COVER RH  (See REMOVAL )
  5. REMOVE V-BANK COVER  (See INSPECTION )
  6. REMOVE NO. 1 AIR CLEANER INLET  (See REMOVAL )
  7. DISCONNECT NO. 2 VENTILATION HOSE 
    1. Disconnect the ventilation hose from the cylinder head.
    Fig 1: Locating Ventilation Hose For Cylinder Head
    G05285373Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE 
    1. Disconnect the MAF meter connector.
    2. Disconnect the clamp from the air cleaner.
      Fig 2: Locating Clamp For Air Cleaner
      G05302570Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the purge line hose.
      Fig 3: Locating Purge Line Hose
      G05302571Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disconnect the 4 clamps.
    5. Remove the hose clamp and air cleaner cap with air cleaner hose.
    Fig 4: Removing Hose Clamp And Air Cleaner Cap With Air Cleaner Hose
    G05813641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE THROTTLE BODY 
    1. Disconnect the throttle motor connector.
    2. Remove the 4 bolts and disconnect the throttle body from the intake air surge tank.
      Fig 5: Locating Bolts For Throttle Body
      G05302573Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the 2 water by-pass hoses from the throttle body.
    4. Remove the throttle body and gasket.
    Fig 6: Locating Water By-Pass Hoses
    G05285377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002