Sensor Description

This KS system uses one or two flat response two-wire sensors. The sensor uses piezo-electric crystal technology that produces an AC voltage signal of varying amplitude and frequency based on the engine vibration or noise level. The amplitude and frequency are dependent upon the level of knock that the KS detects. The control module receives the KS signal through 2 isolated signal circuits.

If the control module has determined that knock is present, it will retard the ignition timing to attempt to eliminate the knock. The control module is capable of controlling spark retard on an individual cylinder basis. The control module will always try to work back to a zero compensation level, or no spark retard. KS diagnostics are calibrated to detect faults with the KS circuitry inside the control module, the KS wiring, or the KS voltage output. Some diagnostics are also calibrated to detect constant noise from an outside influence such as a loose/damaged component or excessive engine mechanical noise.