Kia Cee'd: 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.

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: Rear Upper Arm Repair procedures
Replacement 1. Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported. 2. Remove the rear wheel and tire (A) from rear hub. Tightening torque: 88.2 ~ 1 ...

Kia Cee'd JD Owners Manual: Starting the engine
WARNING Always wear appropriate shoes when operating your vehicle. Unsuitable shoes (high heels, ski boots,etc.) may interfere with your ability to use the brake and accelerator pedal. Do not start the vehicle with the accelerator pedal depressed. The vehicle can move and ...