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

Main Relay Testing:

1. While turning ignition switch "ON" and "OFF," check for "click" at relay.
2. Unplug relay and check that there is no continuity across terminals "A" and "B" or across terminals "C" and "D."
3. Apply 12V and a ground to terminals "E" and "F" of the two-pin connector.
4. Check that continuity now exists across terminals "A" and "B" and across terminals "C" and "D."
5. If not as specified, replace relay.