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Home >> Nissan-Datsun >> 2019 >> Sentra SL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Control System (Introduction) (1.6L)) >> System Description >> Component Parts >> Engine Control System >> Knock Sensor
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Knock Sensor

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The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.

GNSJSBIA0284Z-284Courtesy of NISSAN NORTH AMERICA, INC.