Knock Sensor: Replacement

WARNING: This page is about a different car, the 2004 Toyota Camry Solara. 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 REPLACEMENT )
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.
    
    Fig 1: Removing Fuel Pipe Clamp
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Pinch the tube connector and then pull out the fuel pipe No. 1.
    
    Fig 2: Pinching Tube Connector & Removing 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.
2. Lock the hose clamp, as shown in Fig 3 .
  
  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.
  
  Fig 4: Disconnecting Ground Cable
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Disconnect the 6 fuel injector connectors.
6. Loosen and remove the intake manifold's 9 bolts and 2 nuts uniformly 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.
REMOVE ENGINE MOVING CONTROL ROD (See TIMING BELT )

Fig 5: Removing Engine Moving Control Rod
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE WATER OUTLET
1. Disconnect the radiator hose inlet.
  
  Fig 6: Disconnecting Radiator Hose 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 Fig 7 . Then remove the water outlet together with the water by-pass hose No. 1.
  
  Fig 7: Locking Hose Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Remove the 2 gaskets from the 2 cylinder heads.
REMOVE KNOCK SENSOR
1. Disconnect the 2 knock sensor connectors.
2. Remove the 2 nuts and 2 knock sensors.
Fig 8: Removing Knock Sensors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL KNOCK SENSOR
1. Install the 2 knock sensors with the 2 nuts, as shown in Fig 9 .
  Torque: 20 N.m (199 kgf.cm, 14 ft-lbf)
  
  Fig 9: 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 uniformly in the numerical order shown in the illustration.
  Torque: 15 N.m (153 kgf.cm, 11 ft-lbf)
  
  NOTE: 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)
  
  Fig 10: Installing Ground Cable
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Connect the heater inlet water hose.
5. Connect the fuel pipe No. 1.
  1. Push the quick connector into the pipe until a "click" sound is heard.
    
    Fig 11: Pushing Quick Connector Into Pipe
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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.
6. Install the fuel pipe clamp.
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 (See REPLACEMENT )
ADD ENGINE COOLANT (See REPLACEMENT )
CHECK FOR ENGINE COOLANT LEAKS (See INSPECTION )
CHECK FOR FUEL LEAKS (See ON-VEHICLE INSPECTION )
INSTALL V-BANK COVER SUB-ASSY (See REPLACEMENT )