Knock Sensor (2UZ-FE): Replacement

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

PREVENT GASOLINE FROM SPILLING OUT (SEE FUEL SYSTEM (2UZ-FE) )
DRAIN ENGINE COOLANT (2UZ-FE)
REMOVE THROTTLE BODY COVER SUB-ASSY
1. Remove the 2 nuts and throttle body cover sub-assy.
REMOVE AIR CLEANER HOSE ASSY
1. Disconnect the vacuum hoses (for the power steering idle-up and fuel pressure regulator) and ventilation hose.
2. Remove the air cleaner hose assy.
DISCONNECT FUEL HOSE (SEE REPLACEMENT )
DISCONNECT FUEL HOSE NO. 2 (SEE REPLACEMENT )
DISCONNECT CONNECTORS FROM INTAKE MANIFOLD
1. Disconnect the throttle control connector.
2. Disconnect the VSV connector for EVAP.
3. Disconnect the 8 injector connectors.
4. Disconnect the ECT sensor connector.
5. Disconnect the 2 VSV connectors for the air injection system.
6. Disconnect the 8 ignition coil connectors.
7. Disconnect the 2 air fuel ratio sensor connectors.
DISCONNECT HOSES FROM INTAKE MANIFOLD
1. Disconnect the vacuum hose from the fuel pressure regulator.
2. Disconnect the PCV hose from the PCV valve on the LH cylinder head.
3. Disconnect the EVAP hose (from the charcoal canister) from the VSV for the EVAP.
4. Disconnect the 2 vacuum hoses from the VSV for the air injection system.
Fig 1: Disconnecting Hoses From Intake Manifold
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE INTAKE MANIFOLD ASSY
1. Disconnect the 2 water by-pass hoses from the throttle body.
  
  Fig 2: Disconnecting Water By-Pass Hoses
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the 2 wire clamps from the wire clamp bracket on the RH delivery pipe.
  
  Fig 3: Disconnecting Wire Clamps
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Remove the bolt and nut holding the engine wire protector from the intake manifold and cylinder head.
4. Remove the 2 bolts and ground cables from the RH and LH cylinder heads.
  
  Fig 4: Removing Bolt And Ground Cables
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Remove the bolt and V-bank cover bracket from the intake manifold.
6. Disconnect the engine wire from the engine hanger and wire bracket.
  
  Fig 5: Disconnecting Engine Wire
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Remove the bolt and wire bracket from the intake manifold.
8. Remove the 6 bolts, 4 nuts, intake manifold assy and 2 gaskets.
Fig 6: Removing Intake Manifold Assy
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE AIR PUMP ASSY W/ BRACKET (SEE REPLACEMENT )
REMOVE KNOCK SENSOR
1. Disconnect the 2 knock sensor connectors.
2. Remove the 2 nuts and 2 knock sensors.
Fig 7: 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 8 .
  20 N.m (204 kgf.cm, 15 ft.lbf)
2. Connect the 2 knock sensor connectors.
Fig 8: Installing Knock Sensors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL AIR PUMP ASSY W/ BRACKET (SEE REPLACEMENT )
INSTALL INTAKE MANIFOLD ASSY
1. Place 2 new gaskets on the intake manifold.
  
  Fig 9: Placing Gaskets On Intake Manifold
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Place the intake manifold on the cylinder heads.
3. Install and uniformly tighten the 6 bolts and 4 nuts in several steps.
  18 N.m (185 kgf.cm, 13 ft.lbf)
  
  Fig 10: Installing Intake Manifold Bolts And Nuts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Install the V-bank cover bracket to the intake manifold.
  7.5 N.m (76 kgf.cm, 66 in.lbf)
5. Install the wire bracket to the intake manifold with the bolt.
  7.5 N.m (76 kgf.cm, 66 in.lbf)
  
  Fig 11: Installing Wire Bracket
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Connect the engine wire to the engine hanger and wire bracket.
7. Connect the wire protector to the intake manifold and cylinder heads with the bolt and nut.
8. Install the 2 ground cables with the 2 bolts to the RH and LH cylinder heads.
  
  Fig 12: Installing Ground Cables With Bolts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Connect the 2 water by-pass hoses to the throttle body.
  
  Fig 13: Connecting Water By-Pass Hoses
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
10. Connect the 2 wire clamps to the wire clamp bracket on the RH delivery pipe.
Fig 14: Connecting Wire Clamps
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CONNECT HOSES FROM INTAKE MANIFOLD
1. Connect the vacuum hose to the fuel pressure regulator.
2. Connect the PCV hose to the PCV valve on the LH cylinder head.
3. Connect the EVAP hose (from the charcoal canister) to the VSV for EVAP.
4. Connect the 2 vacuum hoses to the VSV for the air injection system.
Fig 15: Connecting Hoses From Intake Manifold
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CONNECT CONNECTORS FROM INTAKE MANIFOLD
1. Connect the throttle control connector.
2. Connect the 2 VSV connectors for the air injection system.
3. Connect the VSV connector for the EVAP.
4. Connect the 8 injector connectors.
5. Connect the ECT sensor connector.
6. Connect the 8 ignition coil connectors.
7. Connect the 2 air fuel ratio sensor connectors.
INSTALL FUEL HOSE NO.2 (SEE REPLACEMENT )
INSTALL FUEL HOSE (SEE REPLACEMENT )
INSTALL THROTTLE BODY COVER SUB-ASSY
Torque: 7.5 N.m (80 kgf.cm, 66 in.lbf)
ADD ENGINE COOLANT (2UZ-FE)
CHECK FOR ENGINE COOLANT LEAKS (SEE COOLING SYSTEM (1GR-FE) )
CHECK FOR FUEL LEAKS (SEE ON-VEHICLE INSPECTION )