Kia Sorento 2003-05

Knock Sensor (KS)

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Operation



The knock sensor is used to detect engine vibrations caused by preignition or detonation and provides information to the ECM, which then retards the timing to eliminate detonation.

Removal & Installation



  1. Disconnect the negative battery cable.
  2.  
  3. Remove the necessary components to gain access to the sensor.
  4.  
  5. Disconnect the sensor connector.
  6.  
  7. Remove the sensor from its mounting.
  8.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Tighten the sensor to 15-18 ft. lbs.
  4.  

Testing



  1. Disconnect the sensor electrical connector. Connect an ohmmeter.
  2.  
  3. Measure the resistance between terminals 1 and 2. Specification should be 5mohm at 68 degrees F.
  4.  
  5. If resistance is zero, replace the sensor.
  6.  
  7. Measure the capacitance between terminal 1 and 2. Specification should be 800-1600 pF.
  8.  
  9. If not within specification, replace the sensor.
  10.  

 
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