Parking Brake Switch Circuit [12/2018 -]: Description
WARNING: This page is about a different car, the 2022 Toyota Prius, 2021 Toyota Prius, 2020 Toyota Prius, and 2019 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
The main body ECU (multiplex network body ECU) detects the condition of the parking brake switch assembly.