Kia Cee'd: Charging System / DC DC Converter Description and operation
Due to the considerably more frequent occurrence of starting operations, the
electrical load that occurs often leads to voltage dips in the vehicle network.
In order to stabilize the power supply for certain voltage-sensitive electrical
components, a DC/DC converter is used in conjunction with the ISG function.
The DC DC converter supplies the relay with a voltage that also remains constant
during the starting operation.
The DC/DC converter is fitted at the behind of the glove box.
Via the test leads for input voltage and the start relay , the electronics decide
whether the power is supplied to the output via the bypass or the DC/DC converter.
In the bypass mode, the on-board supply voltage is not fed across the DC/DC
converter, rather is transferred directly to the outputs. In the booster phase,
the vehicle voltage is adapted.

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In the ISG mode, if the power of an audio system turns OFF by
drawdown while “Auto Starting” or “Idle Starting” function operates,
replace the DC/DC converter.
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Removal
1.
Disconnect the battery negative terminal.
2.
Loosen the mounting bolts (A) and then, turn the adjusting bolt (B)
clockwise ...
Component Location
1. DC/DC converter (LHD)
2. DC/DC converter (RHD)
...
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). ...
: Rear Occupant Alert System
What is the Rear Occupant Alert System
The rear occupant alert system monitors
vehicle conditions and notifies you to check
for rear seat occupants when you switch
the ignition off.
How Does the Rear Occupant Alert System Work
The system monitors when rear doors have
been opened and closed to in ...