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 Owners Manual: Switching to Radio Mode
Pressing the key will change the operating mode in order of FM1 ➟ FM2 ➟ FMA ➟ AM ➟ AMA. If [Pop-up Mode] / [Mode Pop-up] is turned on within [Display], then pressing the key will display the Radio Pop-up Mode screen. Turn the TUNE knob to move the focus. Press the knob ...

Kia Cee'd JD Service Manual: Cluster Ionizer Repair procedures
Inspection 1. Press the VENT switch more then 4 times within 2 seconds while pressing the OFF switch.   Display Fail description 00 Normal ...