DTC P0620-00: Alternator Control Circuit: General Description
WARNING: This page is about a different car, the 2021 Kia Soul. However, it is still accessible from the selected car via links, so may be relevant.
Alternator in which there is a communication regulator in order to compensate current loss resulting from repetitive starting. The alternator is duty controlled as current control by PCM with the battery voltage, current, temperature information from battery sensor. The more electrical load, the higher duty output.