Nissan Car Altima & Sentra 1999-06

Knock Sensor (KS)

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Testing



1.6L (GA16DE) I4 Engine & 2.0L (SR20DE) I4 Engine
  1. Start engine and run at idle.
  2.  
  3. Measure voltage at ECM pin 54.
  4.  
  5. Voltage should be 2.0-3.0 vDC.

    Click image to see an enlarged view

    Fig. Knock Sensor specification-Sentra

  6.  

2.4L (KA24DE) I4 Engine
  1. Start engine and run at idle.
  2.  
  3. Measure voltage at ECM pin 54.
  4.  
  5. Voltage should be approximately 2.5 vDC.

    Click image to see an enlarged view

    Fig. Knock Sensor specification-Altima

  6.  

 
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