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 1-18.
- Check EFI main relay operation by applying battery voltage and ground and checking continuity between specified terminals. See Fig 1-18. 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 | Relay Box Near Passenger's Side Front Corner Of Engine Bay |