DTC B1507-18: Turn Signal Light Circuit Current Below Threshold [04/2018 - 08/2019]: Wiring Diagram

WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.