Knock Sensor: Replacement

1. Disconnect the fuel pipe No. 1.
   1. Remove the EFI fuel pipe clamp.
   2. Pinch the tube connector and then pull out the fuel pipe No. 1.
      Fig 1: Pinching Tube Connector And Pulling Fuel Pipe No. 1 Out

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE:

   • Check if there is any dirt or mud around the connector before this operation and remove the dirt as necessary.
     Fig 2: Removing Dirt Or Mud Around Connector

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   • Be careful of mud because the quick connector has an O-ring which seals the pipe and connector that can be contaminated.
   • Do not use any tool in this operation.
   • Do not bend or twist the nylon tube. Protect the connector by covering it with a vinyl or plastic bag.
   • When the pipe and connector are stuck, push and pull the connector to release and pull the connector out carefully.
2. Lock the hose clamp as shown in Fig 3.
   Fig 3: Locking Hose Clamp

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3. Disconnect the heater water inlet hose B.
4. Remove the nut and the ground cable.
   Fig 4: Removing Ground Cable

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5. Disconnect the 6 fuel injector connectors.
6. In order to remove the intake manifold, using several steps, remove the 9 bolts and the 2 nuts in the sequence shown in Fig 5.
   Fig 5: Removing Intake Manifold In Sequence

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the 2 bolts and the engine mounting stay.

1. Disconnect the radiator hose inlet.
   Fig 6: Disconnecting Radiator Hose Inlet

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2. Disconnect the radiator reserve tank hose.
3. Disconnect the engine coolant temperature sensor connector.
4. Remove the clamp.
5. Remove the 2 bolts, the 2 nuts and the 2 washers.
6. Lock the hose clamp as shown in Fig 7 and remove the water outlet together with the water by-pass hose No. 1.
   Fig 7: Locking Hose Clamp

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Remove the 2 gaskets from the 2 cylinder heads.

1. Disconnect the 2 knock sensor connectors.
2. Remove the 2 nuts and the 2 knock sensors.

Fig 8: Removing Knock Sensor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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) 

2. Connect the 2 knock sensor connectors.

Fig 9: Installing Knock Sensor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Install 2 new gaskets to the 2 cylinder heads.
2. Install the water outlet together with the water by-pass hose No. 1 and unlock the hose clamp.
3. Tighten the 2 bolts, the 2 nuts and 2 washers.

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

4. Install the clamp.
5. Connect the engine coolant temperature sensor connector.
6. Connect the radiator reserve tank hose.
7. Connect the radiator hose inlet.

Torque: 23 N.m (235 kgf.cm, 17 ft.lbf) 

1. Install the intake manifold with the 9 bolts and the 2 nuts. Using several steps, tighten the bolts and the nuts uniformly in the sequence shown in Fig 10.
   Fig 10: Installing Intake Manifold In Sequence

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Retighten the 2 bolts and 2 nuts of the water outlet.

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

3. Retighten the water outlet mounting bolts and nuts.

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

4. Install the ground cable with the nut.

   Torque: 8.4 N.m (86 kgf.cm, 74 in.lbf) 

5. Connect the heater water inlet hose B.
6. Connect the fuel pipe No. 1.
   1. Push in the fuel tube connector to the pipe until fuel tube connector makes "click" sound.
      NOTE:

      • Check if there is any damage or foreign objects on the connected part.
      • After connecting, check if the connector and the pipe are securely connected by pulling on them.
   2. Install the EFI fuel pipe clamp.

Fig 11: Connecting Fuel Pipe No. 1

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002