Prowler V6-3.5L VIN G (1999)
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. The RMS voltage starts at about 20mVac (at about 700 rpm) and increases to approximately
600 mVac (5,000 rpm).
If the output falls outside of this range a DTC will be set.
