Main Relay (Computer/Fuel System): Testing and Inspection

EFI MAIN RELAY INSPECTION





1. Remove EFI main relay (Marking: EFI).





2. Inspect EFI main relay continuity.
(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.





3. Inspect EFI main relay operation.
(a) Apply battery positive voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is continuity between terminals 3 and 4.
If operation is not as specified, replace the relay. a
4. Reinstall EFI main relay.