DTC P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input) [11/2021 - ]: Wiring Diagram
WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.