Hyundai Cars 2006-2008

Knock Sensor

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Operation



Specific to:

Hyundai Entourage 2007-2008

The Knock Sensor (KS) is used to detect engine vibrations caused by pre-ignition or detonation and provides information to the PCM. The PCM will then retard the timing in an attempt to eliminate detonation.

Click image to see an enlarged view

Fig. Exploded view of Knock Sensor (KS) component

Specific to:

Hyundai Accent 2006-2008

Hyundai Azera 2006-2008

Hyundai Elantra 2006-2008

Hyundai Sonata 2006-2008

Hyundai Tiburon 2006-2008

The Knock Sensor (KS) is used to detect engine vibrations caused by pre-ignition or detonation and provides information to the ECM/PCM. The ECM/PCM will then retard the timing in an attempt to eliminate detonation.

Click image to see an enlarged view

Fig. Exploded view of Knock Sensor (KS)

Removal & Installation



Specific to:

Hyundai Accent 2006-2008

Hyundai Azera 2006-2008

Hyundai Elantra 2006-2008

Hyundai Entourage 2007-2008

Hyundai Sonata 2006-2008

Hyundai Tiburon 2006-2008

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  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 12-17 ft. lbs. (16-24 Nm).
  4.  

Testing



Specific to:

Hyundai Entourage 2007-2008

  1. Disconnect the Knock Sensor (KS) electrical connector.
  2.  
  3. Connect an ohmmeter.
  4.  
  5. Measure the resistance between terminals 1 and 2. Specification should be 5mohm at 68°F (20°C).
  6.  
  7. If not within specification, replace the effected KS.

    Click image to see an enlarged view

    Fig. Knock Sensor (KS) connector end view and schematic diagram

  8.  

Specific to:

Hyundai Accent 2006-2008

Hyundai Azera 2006-2008

Hyundai Elantra 2006-2008

Hyundai Sonata 2006-2008

Hyundai Tiburon 2006-2008

  1. Disconnect the Knock Sensor (KS) electrical connector.
  2.  
  3. Connect an ohmmeter.
  4.  
  5. Measure the resistance between terminals 1 and 2. Specification should be 5mohm at 68°F (20°C).
  6.  
  7. If not within specification, replace the KS.
  8.  

 
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