Throttle Body ASSY (1ZZ-FE): Replacement

WARNING: This page is about a different car, the 2006 Toyota Corolla and 2005 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

DISCONNECT BATTERY NEGATIVE TERMINAL
DRAIN ENGINE COOLANT (See ENGINE COOLANT (1ZZ-FE) )
REMOVE CYLINDER HEAD COVER NO.2
1. Remove the 2 nuts and 2 clips, then remove the cylinder head cover No. 2.
Fig 1: Removing 2 Nuts And 2 Clips And Cylinder Head Cover No.2
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE AIR CLEANER CAP SUB-ASSY
1. Disconnect the mass air flow meter connector.
2. Disconnect the VSV connector.
3. Remove the 2 wire harness clamps.
  
  Fig 2: Disconnecting Mass Air Flow Meter Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Disconnect the fuel vapor feed hose No. 1 from the VSV.
5. Disconnect the fuel vapor feed hose No. 3 from the VSV.
  
  Fig 3: Disconnecting Fuel Vapor Feed Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Disconnect the ventilation hose No. 1 from the cylinder head cover.
  
  Fig 4: Disconnecting Ventilation Hose No 1 From Cylinder Head Cover
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Loosen the hose clamp bolt, then disconnect air cleaner hose No. 1.
  
  Fig 5: Loosening Hose Clamp Bolt, And Disconnecting Air Cleaner Hose No.1
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
8. Remove the air cleaner cap together with the air cleaner hose.
Fig 6: Removing Air Cleaner Cap Together With Air Cleaner Hose
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE THROTTLE BODY ASSY
1. Disconnect the throttle control motor connector.
  
  Fig 7: Disconnecting Throttle Control Motor Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the water by-pass hose from the throttle body.
3. Disconnect the water by-pass hose No. 2 from the throttle body.
  
  Fig 8: Disconnecting Water By-Pass Hose No. 2 From Throttle Body
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Remove the 2 bolts and 2 nuts, then remove the throttle body.
  
  Fig 9: Removing 2 Bolts And 2 Nuts And Throttle Body
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Remove the gasket from the intake manifold.
Fig 10: Removing Gasket From Intake Manifold
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL THROTTLE BODY ASSY
1. Install a new gasket onto the intake manifold.
  
  Fig 11: Installing New Gasket Onto Intake Manifold
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Install the throttle body with the 2 bolts and 2 nuts.
  Torque: 9.0 N.m (90 kgf.cm, 80 in..lbf)
  
  Fig 12: Installing Throttle Body With 2 Bolts And 2 Nuts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the water by-pass hose No. 2 to the throttle body.
4. Connect the water by-pass hose to the throttle body.
  
  Fig 13: Connecting Water By-Pass Hose No. 2 To Throttle Body
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Connect the throttle control motor connector.
Fig 14: Connecting Throttle Control Motor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL AIR CLEANER CAP SUB-ASSY
1. Install the air cleaner cap together with the air cleaner hose.
  
  Fig 15: Installing Air Cleaner Cap Together With Air Cleaner Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Tighten the hose clamp bolt, then connect the air cleaner hose.
  Torque: 2.0 N.m (20 kgf.cm, 18 in..lbf)
  
  Fig 16: Tightening Hose Clamp Bolt And Connecting Air Cleaner Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the ventilation hose No. 1 to the cylinder head cover.
  
  Fig 17: Connecting Ventilation Hose No. 1 To Cylinder Head Cover
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Connect the fuel vapor feed hose No. 3 to the VSV.
5. Connect the fuel vapor feed hose No. 1 to the VSV.
  
  Fig 18: Connecting Fuel Vapor Feed Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Install the 2 wire harness clamps.
7. Connect the VSV connector.
8. Connect the mass air flow meter connector.
Fig 19: Connecting Mass Air Flow Meter Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CONNECT BATTERY NEGATIVE TERMINAL
Torque: 5.4 N.m (55 kgf.cm, 48 in..lbf)
ADD ENGINE COOLANT (See ENGINE COOLANT (1ZZ-FE) )
CHECK FOR ENGINE COOLANT LEAKAGE (See COOLING SYSTEM (1ZZ-FE) )
INSTALL CYLINDER HEAD COVER NO.2
1. Install the cylinder head cover No. 2 with the 2 nuts and 2 clips.
Torque: 7.0 N.m (71 kgf.cm, 62 in..lbf)

Fig 20: Installing Cylinder Head Cover No. 2 With 2 Nuts And 2 Clips
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002