Stratus L4-2.4L VIN X (1998)
Knock Sensor: Testing and Inspection
The engine knock sensor is affected by a number of factors. A few of these are:
-
Ignition Timing
-
Cylinder Pressure
-
Fuel Octane etc
The knock sensor generates an AC voltage whose amplitude increases with the increase of engine knock.
The knock sensor can be tested with a digital voltmeter.
-
RMS voltage starts at about 20mVac -- at about 700 rpm
-
and increases to approximately 600 mVac -- at 5,000 rpm.
If the output falls outside of this range a DTC will be set.
