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

EFI MAIN RELAY INSPECTION

1. Remove EFI main relay.




LOCATION: In the engine compartment relay box.

2. Inspect EFI main relay.
A. Inspect relay continuity




(a) Using an ohmmeter, check that there is continuity between terminals 1 and 3.
(b) Check that there is no continuity between terminals 2 and 4.
If continuity is not as specified, replace the relay.
B. Inspect relay operation




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