Load-Sensing Proportioning Valve (LSPV) & By-Pass Valve (BV)
WARNING: This page is about a different car, the 2003 Toyota Tundra and 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
For testing procedure, see Fig 1 and Fig 2 . For component view, see Fig 3. For brake bleeding procedure, see BLEEDING BRAKE SYSTEM .