Knock Sensor (1MZ-FE/3MZ-FE): Replacement

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

DISCHARGE FUEL SYSTEM PRESSURE (See PRECAUTION )
DRAIN ENGINE COOLANT (See COOLANT (1MZ-FE/3MZ-FE) )
REMOVE V-BANK COVER SUB-ASSY (See REPLACEMENT )
REMOVE AIR CLEANER CAP SUB-ASSY (See REPLACEMENT )
REMOVE EMISSION CONTROL VALVE SET (See REPLACEMENT )
REMOVE INTAKE AIR SURGE TANK (See REPLACEMENT )
REMOVE INTAKE MANIFOLD
1. Disconnect the fuel pipe No. 1.
  1. Remove the fuel pipe clamp.
  2. Pinch the tube connector and then pull out the fuel pipe No. 1.
    
    Fig 1: Pinching Tube Connector And Then Pulling Out Fuel Pipe No. 1
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  NOTE:
  - Check the connector for dirt, mud or other contamination. Clean if necessary.
  - Be sure to keep the tube connector, pipe and O-ring clean. They can become contaminated easily.
  - Do not use tools when disconnecting the fuel pipe.
  - Do not bend or twist the nylon tube. Protect the connector by covering it with a vinyl or plastic bag.
  - When the pipe and the connector are stuck, push and pull the connector to release it. Then pull the connector out carefully.
    
    Fig 2: Identifying Fuel Line Tube Connector And Nylon Tube
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Lock the hose clamp, as shown.
  
  Fig 3: Locking Hose Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the heater inlet water hose.
4. Remove the nut and disconnect the ground cable.
5. Disconnect the 6 fuel injector connectors.
  
  Fig 4: Removing Ground Cable
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Loosen and remove the intake manifold's 9 bolts and 2 nuts little by little in the numerical order shown in the illustration.
7. Remove the intake manifold.
  NOTE: Fully removing each bolt and nut one by one may damage the intake manifold, bolts and nuts.
  
  Fig 5: Removing Intake Manifold
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE WATER OUTLET
1. Disconnect the radiator hose inlet.
  
  Fig 6: Identifying Radiator Hose Clamp Inlet
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECT sensor connector.
3. Remove the clamp.
4. Remove the 2 bolts, 2 nuts and 2 washers.
5. Lock the hose clamp as shown in the illustration. Then remove the water outlet together with the water bypass hose No. 1.
6. Remove the 2 gaskets from the 2 cylinder heads.
  
  Fig 7: Removing Water Outlet
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE KNOCK SENSOR (1MZ-FE ENGINE TYPE)
1. Disconnect the 2 knock sensor connectors.
2. Using SST, remove the 2 knock sensors.
  SST 09249-63010, 09816-30010
  
  Fig 8: Removing 2 Knock Sensors Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE KNOCK SENSOR (3MZ-FE ENGINE TYPE)
1. Disconnect the 2 knock sensor connectors.
2. Remove the 2 nuts and 2 knock sensors.
  
  Fig 9: Removing Knock Sensors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL KNOCK SENSOR (1MZ-FE ENGINE TYPE)
1. Using SST, install the 2 knock sensors.
  SST 09249-63010, 09816-30010
  
  Torque: 39 N.m (398 kgf.cm, 29 ft.lbf)
2. Connect the 2 knock sensors.
  
  Fig 10: Installing Knock Sensors Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL KNOCK SENSOR (3MZ-FE ENGINE TYPE)
1. Install the 2 knock sensors with the 2 nuts, as shown.
  Torque: 20 N.m (199 kgf.cm, 14 ft.lbf)
  
  Fig 11: Installing Knock Sensors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the 2 knock sensor connectors.
INSTALL WATER OUTLET
1. Install 2 new gaskets to the 2 cylinder heads.
2. Install the water outlet together with the water bypass hose No. 1 and unlock the hose clamp.
3. Tighten the 2 bolts, 2 nuts and 2 washers.
  Torque: 15 N.m (153 kgf.cm, 11 ft.lbf)
4. Install the clamp.
5. Connect the ECT sensor connector.
6. Connect the radiator hose inlet.
INSTALL INTAKE MANIFOLD
1. Tighten the intake manifolds's 9 bolts and 2 nuts little by little in the numerical order shown.
  Torque: 15 N.m (153 kgf.cm, 11 ft.lbf)
  
  Fig 12: Tightening Sequence For Intake Manifold
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NOTE: In this case, fully tightening one of these bolts or nuts without partially tightening the other bolts or nuts in the group may damage the intake manifold, bolts and nuts.
2. Retighten the water outlet mounting bolts and nuts.
  Torque: 15 N.m (153 kgf.cm, 11 ft.lbf)
3. Install the ground cable with the nut.
  Torque: 8.4 N.m (86 kgf.cm, 74 in.lbf)
4. Connect the heater inlet water hose.
5. Connect the fuel pipe No. 1.
  1. Push the quick connector into the pipe until it makes "click" sound.
    NOTE:
    Check if there is any damage or contamination on the connected part.
    
    After connecting, confirm that the connector and pipe are securely connected by trying to pull them apart.
  2. Install the fuel pipe clamp.
    
    Fig 13: Pushing Quick Connector Into Pipe (Until It Makes "Click" Sound)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL INTAKE AIR SURGE TANK (See REPLACEMENT )
INSTALL EMISSION CONTROL VALVE SET (See REPLACEMENT )
INSTALL AIR CLEANER CAP SUB-ASSY (See REPLACEMENT )
CHECK CONNECTION OF VACUUM HOSE
ADD ENGINE COOLANT (See COOLANT (1MZ-FE/3MZ-FE) )
CHECK FOR ENGINE COOLANT LEAKS (See ON-VEHICLE INSPECTION )
CHECK FOR FUEL LEAKS (See ON-VEHICLE INSPECTION )
INSTALL V-BANK COVER SUB-ASSY (See REPLACEMENT )