DTC B16A4-13: ECV Fault: General Description
WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
For electric control variable swash plate compressor, the oblique angle of swash plate is controlled by Electric Control Valve (ECV) control. When ECV id off, the oblique angle of swash plate operates in 0° (vertical). Therefore, the coolant circulation is stopped that is, compressor operation is off. As a result, it is not required to control compressor on/off using magnetic clutch.