Circuit/System Description
WARNING: This page is about a different car, the 2018 Chevrolet Bolt EV. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic runs with the drive motor battery charger cable connected. The hybrid/EV powertrain control module 2 uses a 5 V regulated signal through a 2700 Ω resistor to a low reference circuit in the battery charger to detect if the drive motor battery charger cable is attached.