Power Source Circuit [07/2020 -]: 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.
When the power switch is on (IG) or the operation conditions of the headlights are met, the main body ECU (multiplex network body ECU) supplies power to the No. 1 headlight ECU sub-assemblies via the No. 1 integration relay.
When the power switch is on (IG), the main body ECU (multiplex network body ECU) supplies power to the No. 1 headlight ECU sub-assemblies via the IG1-NO. 1 relay.