EFI Main Relay
NOTE:
On Corolla, EFI main relay may also be referred to as EFI relay or F-HTR relay. On all other models, EFI main relay may also be referred to as EFI relay.
WARNING:
On Prius, read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
- Ensure ignition is off. Remove EFI main relay. See EFI MAIN RELAY LOCATION table.EFI MAIN RELAY LOCATION
Application Location Camry & Camry Solara In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment Celica, Corolla, ECHO & Highlander In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Just In Front Of Strut Tower MR2 In Relay Box On Firewall At Driver's Side Front Corner Of Engine Compartment Prius, RAV4 & Tacoma In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment - To test EFI main relay continuity, using ohmmeter, check for continuity and no continuity between specified terminals on EFI main relay. See Fig 1 and Fig 2 .
- To test EFI main relay operation, apply battery voltage and ground to EFI main relay. Using ohmmeter, check for continuity between specified terminals on EFI main relay. See Fig 1 and Fig 2 . Replace EFI main relay if defective.