DTC P0230-00: Fuel Pump Primary 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.
The PCM provides ground to one side of the coil in the fuel pump relay to control the fuel pump relay. The other side of the fuel pump relay coil is connected to main relay, which activates when the ignition switch is on. The PCM monitors the control circuit between the fuel pump relay and the PCM. When the ignition switch is turned on, the PCM energizes the fuel pump relay, which sends power to the fuel pump.