Kia Rio: Description

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.

Knock Sensor (KS)

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Specification

Item Specification Capacitance (pF) 950 ~ 1,350 Resistance (MΩ) 4.87 ...

See also:

Ignition Coil: Inspection
1. Measure the primary coil resistance between terminals (+) and (-). Standard value: 0.75Ω ± 15% ...

Components Location
[Vehicle Components] 1. Automatic transaxle 2. Transaxle control module (TCM) 3. Shift lever 4. Data Link Connector (DLC) [Transaxle Components] ...

Valve Body Components Location
1. PCV adjust screw 2. Solenoid valve 3. Oil temperature sensor 4. Accumulator 5. Low & reverse brake(LR/B) pressure flow hole 6. Under drive brake (UD/B) pressur ...