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

  1. DISCHARGE FUEL SYSTEM PRESSURE (See  FUEL SYSTEM (1MZ-FE/3MZ-FE)  ) 
  2. DRAIN ENGINE COOLANT (See  REPLACEMENT  ) 
  3. REMOVE V-BANK COVER SUB-ASSY (See  REPLACEMENT  ) 
  4. REMOVE AIR CLEANER CAP SUB-ASSY (See  REPLACEMENT  ) 
  5. REMOVE EMISSION CONTROL VALVE SET (See step 6 on  REPLACEMENT  ) 
  6. REMOVE INTAKE AIR SURGE TANK (See step 8 on  REPLACEMENT  ) 
  7. 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: Removing Fuel Pipe Clamp
      G04391310Courtesy 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 Nylon Tube, O-Ring, Pipe And Tube Connector
      G04391311Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Lock the hose clamp, as shown in the illustration.
    3. Disconnect the heater inlet water hose.
      Fig 3: Identifying Hose Clamp And Heater Inlet Water Hose
      G04391312Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the nut and disconnect the ground cable.
    5. Disconnect the 6 fuel injector connectors.
      Fig 4: Identifying Nut, Ground Cable And Fuel Injector Connectors
      G04391313Courtesy 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: Identifying Removal Sequence For Intake Manifold Bolts And Nuts
    G04391314Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE WATER OUTLET 
    1. Disconnect the radiator hose inlet.
      Fig 6: Disconnecting Radiator Hose Inlet
      G04391315Courtesy 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: Locking Hose Clamp
    G04391316Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. 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 Knock Sensors Using SST
    G04391317Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. 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: Identifying Nuts And Knock Sensors
    G04391318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. 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
    G04391319Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. INSTALL KNOCK SENSOR (3MZ-FE ENGINE TYPE) 
    1. Install the 2 knock sensors with the 2 nuts, as shown in the illustration.

      Torque: 20 N.m (199 kgf.cm, 14 ft.lbf) 

    2. Connect the 2 knock sensor connectors.
    Fig 11: Installing Knock Sensor
    G04391320Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. 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.
  14. INSTALL INTAKE MANIFOLD 
    1. Tighten the intake manifolds's 9 bolts and 2 nuts little by little in the numerical order shown in the illustration.

      Torque: 15 N.m (153 kgf.cm, 11 ft.lbf) 

      Fig 12: Identifying Tightening Sequence For Intake Manifold Nuts And Bolts
      G04391321Courtesy 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.
        Fig 13: Pushing Quick Connector Into Pipe
        G04391322Courtesy 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.
      2. Install the fuel pipe clamp.
  15. INSTALL INTAKE AIR SURGE TANK (See step 13 on  REPLACEMENT  ) 
  16. INSTALL EMISSION CONTROL VALVE SET (See step 14 on  REPLACEMENT  ) 
  17. INSTALL AIR CLEANER CAP SUB-ASSY (See  REPLACEMENT  ) 
  18. CHECK CONNECTION OF VACUUM HOSE 
  19. ADD ENGINE COOLANT (See  REPLACEMENT  ) 
  20. CHECK FOR ENGINE COOLANT LEAKS (See  ON-VEHICLE INSPECTION  ) 
  21. CHECK FOR FUEL LEAKS (See  ON-VEHICLE INSPECTION  ) 
  22. INSTALL V-BANK COVER SUB-ASSY (See  REPLACEMENT  ) 
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