4 Runner 2WD L4-2693cc 2.7L DOHC MFI (1997)
EFI Main Relay: Testing and Inspection
INSPECTION
1. Remove EFI main relay (Marking: EFI)
2. Inspect EFI main relay.
(a) Using an ohmmeter, check that there is continuity between terminals 1 and 2.
If there is no continuity, replace the relay.
(b) Check that there is no continuity between terminals 3 and 4.
If there is continuity, replace the relay.
(c) Apply battery positive voltage across terminals 1 and 2.
(d) Using an ohmmeter, check that there is continuity between terminals 3 and 4.
If operation is not as specified, replace the relay.
3. Reinstall EFI main relay.