Tacoma Extra Cab 4WD L4-2693cc 2.7L DOHC MFI (1997)
Knock Sensor: Description and Operation
CIRCUIT DESCRIPTION
Knock sensor is fitted to the cylinder block to detect engine knocking. This sensor contains a piezoelectric element which generates a voltage when
it becomes deformed, which occurs when the cylinder block vibrates due to knocking. If engine knocking occurs, ignition timing is retarded to
suppress it.
