Toyota Corolla 1988-1997 Repair Guide

Knock Sensor

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TESTING



  1. Disconnect the wiring from the knock sensor.
  2.  
  3. Using tool 09816-30010 or an equivalent socket, remove the knock sensor from the vehicle.
  4.  
  5. Using an ohmmeter, check that there is no continuity between the terminal and the body.
  6.  
  7. If there is continuity, replace the sensor.
  8.  
  9. Install the knock sensor with the special tool, tighten securely to 33 ft. lbs. (44 Nm).
  10.  
  11. Connect the sensor wiring.
  12.  

REMOVAL & INSTALLATION



See Figure 1

  1. Disconnect the wiring from the knock sensor.
  2.  
  3. Using tool, 09816-30010 or an equivalent socket, remove the knock sensor from the vehicle.
  4.  



Click image to see an enlarged view

Fig. Fig. 1: The knock sensor is threaded into the engine block

  1. Inspect the vacuum hose over its entire length for any signs of cracking or splitting. The slightest leak can cause improper operation.
  2.  

To install:
  1. Install the knock sensor with the special tool, tighten securely to 33 ft. lbs. (44 Nm).
  2.  
  3. Connect the sensor wiring.
  4.  

Inspect the vacuum hose over its entire length for any signs of cracking or splitting. The slightest leak can cause improper operation.

 
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