XJ-S Convertible (XJ27) L6-4.0L (1996)
Knock Sensor: Description and Operation
If combustion knock is detected by the Knock Sensor (KS), ignition timing, which is normally at optimum advance, may be retarded on specific
cylinders.
Knock sensors use a piezo-electric sensing element to detect broad band (2 kHz to 20 kHz) engine accelerations.
Output of sensor:
Charge sensitivity .......................................................................................................................................................................... 37.5 pC/g nominal
Voltage sensitivity ............................................................................................................................................................................ 29 + 15 % mV/g