DTC P0A81-00: Hybrid/EV Battery Cooling Fan 1 Control Circuit High; DTC P0A81-15: Hybrid/EV Battery Cooling Fan 1 Circuit Short to Auxiliary Battery or Open [04/2018 - 08/2020]: Wiring Diagram
WARNING: This page is about a different car, the 2020 Toyota Avalon and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
Refer to the wiring diagram for DTC P0A81-11.
Refer to WIRING DIAGRAM