Knock sensor voltage test. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Trouble shooting + Test Procedures Need to trouble shoot whats wrong and need to know the best way to test for it? Here it is.

 
 
 
 
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Old 10-15-2009, 02:46 PM   #1
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Default Knock sensor voltage test.

You have two knock sensors on your engine, one in the front near the starter.


And another near the rear of the engine, near the center between the cross member and oil pan.


Unplug the sensor and use your DVOM and put the red probe on the single wire on the plug.


Put the black probe on a good ground, with the ignition key in the run position, not with engine running. You should have voltage.
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