EFI Main Relay

EFI Main Relay Schematic:

PURPOSE
The EFI main relay 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.

LOCATION
Located in the fuse panel on the RH side of the engine compartment.

OPERATION
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.