Hyundai Kona: ISG (Idle Stop & Go) System / DC/DC Converter Repair procedures

Hyundai Kona (OS) 2018-2025 Service Manual / Engine Control / Fuel System / ISG (Idle Stop & Go) System / DC/DC Converter Repair procedures

Removal

[200W]

1.	Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2.	Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel")

3.	Disconnect the DC/DC converter connector.

4.	Remove the DC/DC converter (B) after removing the nuts (A).

[450W]

1.	Turn the ignition switch OFF and disconnect the battery negative (-) terminal.

2.	Remove the heater & A/C control unit. (Refer to Heating, Ventilation and Air Conditioning - "Heater & A/C Control Unit")

3.	Disconnect the DC/DC converter connector (A).

4.	Remove the DC/DC converter (B) after removing the screw & nuts.

Installation

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After reconnecting the battery negative cable, ISG function does not operates until the system is stabilized, about 4 hours. If disconnecting the negative (-) battery cable from the battery during repair work for the vehicle equipped with AMS function, Battery sensor recalibration procedure should be performed after finishing the repair work.

1.	Install in the reverse order of removal.

DC/DC Converter Schematic diagrams

Circuit Diagram [200W] [450W] ...

ISG OFF Switch Description and operation

Description The ISG OFF switch on the floor console can be used to deactivate the ISG function. ...

Other information:

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