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: Trip mode (A, B)
This mode indicates 3 kinds of driving Information. All stored driving information (except odometer, distance to empty and instant fuel economy) resets if the battery is disconnected. 1. Tripmeter (km or mi.) This mode indicates the distance of individual trips selected since the last t ...

Kia Cee'd JD Service Manual: Blower Resistor (Manual) Repair procedures
Inspection 1. Measure the resistance between the terminals. 2. If the measured resistance is not within specification, the blower resistor must be replaced. (After removing the resistor.) Replacement ...