EFI Main Relay (Tacoma, Tercel, T100 & 4Runner)
The EFI fuse supplies constant battery voltage to EFI main relay. When ignition is turned on, voltage is supplied through IGN fuse to EFI main relay. EFI main relay is then energized and provides battery voltage to circuit opening relay, data link connector No. 1 and various other electrical components. The EFI main relay also provides battery voltage to +B terminal of Engine Control Module (ECM) when ignition is turned on. See EFI MAIN RELAY LOCATION table.
EFI MAIN RELAY LOCATION
| Application | Location |
|---|---|
| Camry & Celica | In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Near Battery |
| Corolla | In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Near Strut Tower |
| RAV4 | In Fuse/Relay Box Behind Driver's Side Of Instrument Panel, Next To Steering Column |
| Tacoma, T100 & 4Runner | In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Near Battery |
| Tercel | In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Near Strut Tower |