EFI Main Relay (Land Cruiser)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
EFI main relay may also be referred to as EFI relay or ECD relay. EFI fuse supplies constant battery voltage to one side of EFI main relay. EFI fuse may also be referred to as ECD fuse. EFI main relay is energized by MREL terminal of Engine Control Module (ECM). When EFI main relay is energized, EFI main relay provides battery voltage to +B terminal of fuel pump Electronic Control Unit (ECU), +B and +B1 terminals of ECM and various other electrical components. For operation of fuel pump ECU and fuel pump switch, see FUEL PUMP ELECTRONIC CONTROL UNIT & FUEL PUMP SWITCH (LAND CRUISER) under FUEL PUMP CONTROL CIRCUIT. EFI main relay and EFI fuse are located in fuse/relay box at driver's side front corner of engine compartment.