Kia Sportage: Engine Control System / Knock Sensor (KS) Description and operation
Knocking is a phenomenon characterized by undesirable vibration and noise and
can cause engine damage. Knock Sensor (KS) is installed on the cylinder block
and senses engine knocking.
When knocking occurs, the vibration from the cylinder block is applied as pressure
to the piezoelectric element. When a knock occurs, the sensor produces voltage
signal. The ECM retards the ignition timing when knocking occurs. If the knocking
disappears after retarding the ignition timing, the ECM will advance the ignition
timing. This sequential control can improve engine power, torque and fuel economy.

Specification
Item
Specification
Capacitance (pF)
850 - 1,150
Resistance (MΩ)
About 4.87
...
Circuit Diagram
Harnecss Connector
...
Other information:
Always observe the following:
Check tire pressure when the tires are cold. (After the vehicle has been
parked for at least three hours or hasn't been driven more than one mile (1.6
km) since startup.)
Check the pressure of your spare tire each time you check the pressure
of other ...
Your vehicle will need service more often when you regularly pull a trailer.
Important items to pay particular attention to include engine oil, automatic transaxle
fluid, axle lubricant and cooling system fluid. Brake condition is another important
item to frequently check. Each item is covere ...