Power Ground (PWRGND)
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2022 Ford F-550 Super Duty, 2022 Ford F-450 Super Duty, 2022 Ford F-350 Super Duty, 2022 Ford F-250 Super Duty, and 2021 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The PWRGND circuits are directly connected to the battery negative terminal. The PWRGND circuits provide a return path for the PCM vehicle power (VPWR) circuits.