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.

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 Owners Manual: Multi fuse
If the multi fuse is blown, it must be removed as follows: 1. Turn off the engine. 2. Disconnect the negative battery cable. 3. Remove the fuse panel on the right side in the engine compartment. 4. Remove the nuts shown in the picture above. 5. Replace the fuse with a new one of the s ...

Kia Cee'd JD Service Manual: Alternator Specifications
Specification Alternator [Non-ISG type]   Item Specification Rated voltage 13.5V, 90A Speed in use 1,000 ~ 18,000 rpm Voltage regulator IC Regulator built-in typ ...