Knock Sensor: Description and Operation

KNOCK SENSOR (KS) (DTC: P0325)
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 Engine Control Module (ECM).

NOTES:
^ In case of knock sensor, the freeze frame data will not be stored in ECM.
^ The knock sensor does not have the two trip detection logic, and will not light up the Malfunction Indicator Lamp (MIL).