Fuel Pump Relay: Testing and Inspection

Fuel Pump Relay:

1. Check continuity between control relay terminals 1 and 4, with relay coil energized and not energized. To energize coils, apply battery voltage across terminals 4 and 6. With relay coils energized, there should be continuity between terminals 1 and 4. With relay coils de-energized, there should be no continuity between terminals 1 and 4.
2. Check for continuity between control relay terminals 3 and 5, with no battery voltage applied to terminals 4 and 6. With no voltage applied, continuity should be indicated between terminals 3 and 5.
3. Check for continuity between control relay terminal 2 and 5, with no battery voltage applied to terminals 4 and 6. With no voltage applied, continuity should be indicated between terminals 2 and 5.
4. With no voltage applied to terminals 4 and 6, check for continuity between terminals 6 and 7. With no voltage applied, continuity should be indicated.
5. Switch the battery positive lead to terminal number 8. With battery voltage applied between terminal 4 and 8, check for continuity between terminals 2 and 4. Continuity should be indicated.
6. If test results are not satisfactory, replace control relay.