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Home >> Chevrolet >> 2001 >> Metro >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Knock Sensor

Knock Sensor

The Knock Sensor (KS) is a piezoelectric element, located in cylinder block. KS sends a variable AC voltage signal to PCM depending on engine detonation. PCM will then retard spark timing until engine knock ceases. For component location, see Figure.

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