EFI Main Relay

NOTE: The EFI main relay may also be referred to as MFI main relay, SFI main relay or MPI main relay.

Ensure ignition is off. Remove EFI main relay. See EFI MAIN RELAY LOCATION table. Using ohmmeter, check continuity between specified terminals. See Fig 1-20.
Check EFI main relay operation by applying battery voltage and ground and checking continuity between specified terminals. See Fig 1-20. Replace EFI main relay if defective.

NOTE: The EFI main relay may also be identified using appropriate illustration in THEORY/OPERATION article in the ENGINE PERFORMANCE section or wire color. See appropriate wiring diagram in WIRING DIAGRAMS article in the ENGINE PERFORMANCE section.

EFI MAIN RELAY LOCATION

Application	Location
Pickup	Relay Box Near Passenger's Side Front Corner Of Engine Bay

Fig 1: Testing EFI Main Relay - Checking Continuity (2.4L)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Testing EFI Main Relay - Checking Operation (2.4L)

Fig 3: Testing EFI Main Relay - Checking Continuity (3.0L)

Fig 4: Testing EFI Main Relay - Checking Operation (3.0L)