Main Relay (Computer/Fuel System): Testing and Inspection
EFI MAIN RELAYINSPECTION
1. REMOVE EFI MAIN RELAY FROM ENGINE ROOM J/B NO.2 (Marking:EFI)
2. INSPECT EFI MAIN RELAY CONTINUITY
a. Using an ohmmeter, check that continuity exists between terminals 1 and 2.
If there is no continuity, replace the relay.
b. Check that no continuity exists between terminals 3 and 5.
If continuity exists, replace the relay.
3. INSPECT EFI MAIN RELAY OPERATION
a. Apply battery voltage across terminals 1 and 2.
b. Using an ohmmeter, check that continuity exists between terminals 3 and 5.
If no continuity exists, replace the relay.
4. REINSTALL EFI MAIN RELAY