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: Engine oil level warning light
The engine oil level warning light illuminates when the engine oil level should be checked. If the warning light comes on, check the engine oil level as soon as possible and add engine oil as required. Slowly pour the recommended oil little by little into a funnel. (Oil refill capacity ...

Kia Cee'd JD Service Manual: Hazard Lamp Switch Repair procedures
Inspection 1. It will be able to diagnose defects of hazard switch with GDS quickly. GDS can operates actuator forcefully, input/output value monitoring and self diagnosis. 2. Select model and "BCM". ...