Kia Cee'd: How Vehicle Audio Works / AM (MW, LW) reception
AM broadcasts can be received at greater distances than FM broadcasts. This is because AM radio waves are transmitted at low frequencies. These long, low frequency radio waves can follow the curvature of the earth rather than travelling straight out into the atmosphere. In addition, they curve around obstructions so that they can provide better signal coverage.
FM reception
AM and FM radio signals are broadcast
from transmitter towers located
around your city. They are intercepted
by the radio antenna on your vehicle.
This signal is then received by
the radio ...
FM radio station
FM broadcasts are transmitted at
high frequencies and do not bend to
follow the earth's surface. Because
of this, FM broadcasts generally
begin to fade at short distances from
the station. ...
Other information:
Kia Cee'd JD Service Manual: Variable Intake Solenoid (VIS) Valve Description and operation
Description
Variable Intake manifold Solenoid (VIS) valve is installed on the intake manifold.
The VIS valve controls the vacuum modulator which activates a valve in the intake
manifold. The ECM opens or closes this valve according to engine condition (Refer
to below table). ...
Kia Cee'd JD Service Manual: CVVT Oil Control Valve (OCV) Specifications
Specification
Item
Specification
Coil Resistance (Ω)
6.9 ~ 7.9 [20°C(68°F)]
...
