Concorde V6-2.7L VIN R (1998)
Knock Sensor: Testing and Inspection
Component Testing
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 Vac (5,000 rpm).
-
If the output falls outside of this range a DTC will be set.
