This warning light illuminates for 3 seconds after the ignition switch is set to the ON position and then it will go out. If it lights up while the engine is running, it indicates that water has accumulated inside the fuel filter. If this happens, remove the water from the fuel filter.
For more details, refer to “Fuel filter” in chapter 7.
CAUTION
When the fuel filter warning light illuminates, engine power (vehicle speed & idle speed) may decrease. If you keep driving with the warning light on, you can damage your vehicle's engine parts and injection system of the Common Rail. If this occurs, we recommend that the system be checked by an authorized Kia dealer.
Kia Cee'd JD Service Manual: ICM (Integrated Circuit Module) Relay Box Repair procedures
Inspection
1.
The ICM (Integrated Circuit Module) can be diagnosed by using the GDS
more quickly.
The BCM communicates with the GDS and then reads the relay value and
drives the actuator.
2.
To diagnose the ICM relay ...
Kia Cee'd JD Service Manual: Ignition Coil Specifications
Specification
Item
Specification
Primary Coil Resistance (Ω)
0.75 ± 15% [20°C (68°F)]
Secondary Coil Resistance (kΩ)
5.9 [20°C (68°F)]
...