kia Workshop Repair Guides

Kia Workshop Service and Repair Manuals

ABOUT US
Engine Controls - Knock Sensor Torque|Page 3516 > < Engine Controls - Knock Sensor Torque|Page 3514

Optima L4-2.4L (2001)

Page 1
background image

Knock Sensor: Testing and Inspection

KNOCK SENSOR

The knock sensor is attached to the cylinder block and senses engine knocking conditions. A knocking vibration from the cylinder block is applied as
pressure to the piezoelectric element. This vibrational pressure is then converted into a voltage signal which is delivered as output. If engine knocking
occurs, ignition timing is retarded to suppress it.

CIRCUIT DIAGRAM

Engine Controls - Knock Sensor Torque|Page 3516 > < Engine Controls - Knock Sensor Torque|Page 3514