Fuel Pump Relay & Fuel Pump Resistor
WARNING: This page is about a different car, the 1995 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Fuel pump relay receives voltage from circuit opening relay to operate the fuel pump. Fuel pump operating speed may be varied by the ECM. When ECM grounds fuel pump relay and relay contacts close, voltage is supplied through fuel pump resistor to the fuel pump. This changes fuel pump operating speed.