EFI 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-Fig 4 .
Check EFI main relay operation by applying battery voltage and ground and checking continuity between specified terminals. See Fig 1-Fig 4 . Replace EFI main relay if defective.

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

EFI MAIN RELAY LOCATION

Application	Location
4Runner	Fuse/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)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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