Fuel Pump Relay

Fuel pump relay is energized based upon ignition switch and RPM input. Control unit turns on fuel pump relay by providing a ground for fuel pump relay on terminal "B13" of control unit. When relay is energized, internal relay contacts close and fuel pump is activated. Power for fuel pump is supplied by the EFI main relay, which receives its power from the main fuse. EFI main relay is energized by control unit when the ignition is turned on.