Acura 30530-PV1-A01 Ignition Knock Sensor Assembly

The engine component known as a knock sensor uses vibration detection to prevent spark knock occurrences when detonation gets heavy which maximizes spark advance to enhance vehicle driveability. When knock severity becomes severe the sensor generates an AC output voltage which triggers a signal sending to the PCM to adjust timing for detonation compensation. Users can find knock sensors in vehicles which feature the B18C1 and B18C5 engines in their Integra models. The procedure to check a knock sensor requires the removal of the electrical connector and engine unscrewing of the sensor before attaching the wiring harness to view its voltage reaction through a voltmeter during sensor impacts. A replacement sensor is necessary when the sensor fails to display any voltage change. The knock sensor sits inside the engine block coolant passage through its threaded connection which will create a coolant block drain when the sensor needs removal. New sensors arrive with thread sealant applied to their surfaces but further sealant application should be avoided. The procedure for installing the sensor involves first tightening it to the specified torque level without exceeding it followed by connector reconnection then cooling system refilling before conducting leak inspections.