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.
![](images/knock_sensor_ks_description_and_operation-967/752/egrf251a.gif)
Inspection
1.
Check the signal waveform of the CMPS and CKPS using the GDS.
Specification: Refer to “Wave Form”
...
Specification
Item
Specification
Capacitance (pF)
950 ~ 1,350
Resistance (MΩ)
4.87
...
Other information:
Kia Cee'd JD Owners Manual: Climate control air filter
Filter inspection
If the vehicle is operated in the severely
air-polluted cities or on dusty rough
roads for a long period, it should be
inspected more frequently and replaced
earlier. When you, the owner, replace the
climate control air filter, replace it performing
the following proce ...
Kia Cee'd JD Owners Manual: Aluminum wheel maintenance
The aluminum wheels are coated with a
clear protective finish.
Do not use any abrasive cleaner, polishing
compound, solvent, or wire
brushes on aluminum wheels. They
may scratch or damage the finish.
Clean the wheel when it has cooled.
Use only a mild soap or neutral detergent,
...