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Home >> Mercury >> 2002 >> Sable LS Premium >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - Gasoline & NGV >> Computerized Engine Controls >> Input Devices >> Knock Sensor

Knock Sensor

The Knock Sensor (KS) is a tuned accelerometer located on the engine, which converts engine vibration to an electrical signal. PCM uses this signal to determine the presence of engine knock and retards spark timing accordingly.