Kia Cee'd: Engine Control System / Knock Sensor (KS) Description and operation

Kia Cee'd JD Service Manual / Fuel System / Engine Control System / Knock Sensor (KS) Description and operation

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.

Camshaft Position Sensor (CMPS) Repair procedures
Inspection 1. Check the signal waveform of the CMPS and CKPS using the GDS. Specification: Refer to “Wave Form” ...

Knock Sensor (KS) Specifications
Specification   Item Specification Capacitance (pF) 950 ~ 1,350 Resistance (MΩ) 4.87 ...

Other information:

Kia Cee'd JD Service Manual: Front Driveshaft Repair procedures
Replacement 1. Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported. 2. Remove the front wheel and tire (A) from front hub . Tightening torque: 88.2 ...

Kia Cee'd JD Owners Manual: Closing the hood
1. Before closing the hood, check the following: All filler caps in engine compartment must be correctly installed. Gloves, rags or any other combustible material must be removed from the engine compartment. 2. Return the support rod to its clip to prevent it from rattling. 3. L ...

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