Knock Sensor: Removal

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
DRAIN ENGINE COOLANT (See REPLACEMENT )
REMOVE CYLINDER HEAD COVER NO. 2 (See REMOVAL )
REMOVE AIR CLEANER CAP SUB-ASSEMBLY WITH AIR CLEANER HOSE NO. 1 (See REMOVAL )
DISCONNECT WATER BY-PASS HOSE (See REMOVAL )
DISCONNECT WATER BY-PASS HOSE NO. 2 (See REMOVAL )
REMOVE THROTTLE WITH MOTOR BODY ASSEMBLY (See REMOVAL )
REMOVE INTAKE MANIFOLD
1. Separate the engine wire harness from the intake manifold.
  
  Fig 1: Identifying Engine Wire Harness And Intake Manifold
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Separate water by-pass hose No. 2.
  
  Fig 2: Identifying Water By-Pass Hose No. 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the ventilation hose.
  
  Fig 3: Locating Ventilation Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Disconnect the union to connector tube hose.
  
  Fig 4: Locating Connector Tube Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Remove the 3 bolts and 2 nuts and remove the intake manifold.
6. Remove the gasket from the intake manifold.
  
  Fig 5: Locating Intake Manifold, Bolt And Nut
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE KNOCK SENSOR
1. Disconnect the knock sensor connector.
2. Remove the nut and remove the knock sensor.
  
  Fig 6: Locating Knock Sensor Connector And Nut
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002