Knock Sensor: Removal

DISCHARGE FUEL SYSTEM PRESSURE (See INSTALLATION )
DRAIN ENGINE COOLANT (See ON-VEHICLE INSPECTION )
REMOVE V-BANK COVER SUB-ASSEMBLY (See REMOVAL )
REMOVE AIR CLEANER CAP SUB-ASSEMBLY
REMOVE EMISSION CONTROL VALVE SET (See REMOVAL )
REMOVE INTAKE AIR SURGE TANK (See REMOVAL )
REMOVE INTAKE MANIFOLD
1. Disconnect the fuel pipe No. 1.
  1. Remove the fuel pipe clamp.
  2. Pinch the tube connector and pull out the fuel pipe No. 1.
    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 1: Identifying Pinch Tube Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Lock the hose clamp, as shown in Fig 2.
3. Disconnect the heater inlet water hose.
  
  Fig 2: Locking Hose Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Remove the nut and disconnect the ground cable.
5. Disconnect the 6 fuel infector connectors.
  
  Fig 3: Disconnecting Fuel Infector Connectors
  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 Fig 4.
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 REMOVAL )

Fig 4: Removing Intake Manifold
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE WATER OUTLET
1. Disconnect the radiator hose inlet.
  
  Fig 5: 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 6. Then remove the water outlet together with the water bypass hose No. 1.
6. Remove the 2 gaskets from the 2 cylinder heads.
  
  Fig 6: Removing Clamp
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE KNOCK SENSOR
1. Disconnect the 2 sensor connectors.
2. Remove the 2 nuts and 2 sensors.
  
  Fig 7: Removing Nuts And Sensors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002