DTC P0500 Vehicle Speed Sensor Malfunction; DTC P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High: Wiring Diagram
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
Refer to SFI System (for 2UR-GSE) (See WIRING DIAGRAM ).