FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

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





1. REMOVE EFI MAIN RELAY

LOCATION: In the engine compartment relay box.





2. INSPECT EFI MAIN RELAY
- Inspect relay continuity
- Using an ohmmeter, check that there is continuity between terminals 1 and 2.





- Inspect relay operation
- Apply battery positive voltage across terminals 1 and 2.
- Using an ohmmeter, check that there is continuity between terminals 3 and 5.
- If there is no continuity, replace the relay.
3. REINSTALL EFI MAIN RELAY