Kia Cee'd: Charging System / DC DC Converter Description and operation

Kia Cee'd JD Service Manual / Engine Electrical System / Charging System / DC DC Converter Description and operation

Description
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.
Operation Principle

  
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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.
Alternator Repair procedures
Removal 1. Disconnect the battery negative terminal. 2. Loosen the mounting bolts (A) and then, turn the adjusting bolt (B) clockwise ...

DC DC Converter Components and components location
Component Location   1. DC/DC converter (LHD) 2. DC/DC converter (RHD) ...

Other information:

Kia Cee'd JD Service Manual: Repair procedures
On-vehicle Inpection    • First of all, check for DTCs. If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC. (Refer to DTC guide) ...

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 ...

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