EFI Main Relay

EFI Main Relay:

The EFI Main Relay, located in the fuse panel on the LH side of the engine compartment, serves as a source of battery power for several components including the Circuit Opening Relay, (which powers the Fuel Pump), the Fuel Pressure-Up VSV and the ECU. The EFI Main Relay is supplied battery current through the EFI fuse and is energized by a signal from the ignition switch. The ECU receives relay input at terminals +B and +B1.