Circuit Description
WARNING: This page is about a different car, the 2003 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
For circuit description, see DTC P2120, DTC P2122, DTC P2123, DTC P2125, DTC P2127, DTC P2128 & DTC P2138 . Detecting condition of DTC is when the difference between VPA and VPA2 exceeds the threshold and continues for 0.5 seconds.