Knock Sensor: Inspection

REMOVE ENGINE FROM VEHICLE (See REMOVAL )
REMOVE INTAKE MANIFOLD AND THROTTLE BODY ASSEMBLY (See REMOVAL )
REMOVE KNOCK SENSOR
1. Disconnect the knock sensor connector.
2. Remove the nut and knock sensor.
  
  Fig 1: Removing Knock Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT KNOCK SENSOR
Using an ohmmeter, make sure there is continuity between the terminals.

If there is no continuity, replace the sensor.

Fig 2: Inspecting Knock Sensor Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REINSTALL KNOCK SENSOR
1. Install the knock sensor with the nut.
  Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)
  
  HINT:
  
  Angling the knock sensor below the horizontal (below 0°) is recommended.
  
  Fig 3: Identifying Proper Knock Sensor Installation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the knock sensor connector.
REINSTALL INTAKE MANIFOLD AND THROTTLE BODY ASSEMBLY (See INSTALLATION )
INSTALL ENGINE TO VEHICLE (See INSTALLATION )