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

EFI MAIN RELAY INSPECTION




1. REMOVE EFI MAIN RELAY (Marking: EFI)
LOCATION: In the engine compartment relay box.




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 5.
If there is continuity, replace the relay.




3. INSPECT EFI MAIN RELAY OPERATION
a. Apply battery voltage across terminals 1 and 2.
b. Using an ohmmeter, check that there is continuity between terminals 3 an 5.
If there is no continuity, replace the relay.

4. REINSTALL EFI MAIN RELAY