Toyota Camry and Avalon 1997-2000

Knock Sensor

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TESTING


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Fig. A knock sensor consists of a piezo crystal which vibrates, producing a voltage signal to the computer

  1. Disconnect the wiring from the knock sensor.
  2.  
  3. Remove the knock sensor from the vehicle.
  4.  
  5. Using an ohmmeter, check that there is no continuity between the terminal and the sensor body.
  6.  
  7. If there is continuity, replace the sensor.
  8.  
  9. Install the knock sensor.
  10.  
  11. Connect the sensor wiring.
  12.  

REMOVAL & INSTALLATION


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Fig. Some 6-cylinder engines are equipped with two knock sensors. One for each cylinder bank

  1. Disconnect the wiring from the knock sensor.
  2.  
  3. Unscrew the knock sensor from the vehicle.
  4.  

To install:

  1. Install the knock sensor and tighten securely to 33 ft. lbs. (44 Nm).
  2.  
  3. Connect the sensor wiring.
  4.  

 
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