Circuit Opening Relay

FUEL PUMP (CIRCUIT OPENING) RELAY INSPECTION

1. Remove circuit opening relay.
2. Inspect circuit opening relay.
A. Inspect relay continuity





(a) Using an ohmmeter, check that there is continuity between terminals 1 and 3.
If there is no continuity, replace the relay.
(b) Check that there is no continuity between terminals 2 and 4.
If there is continuity, replace the relay.
B. Inspect relay operation





(a) Apply battery voltage across terminals 1 and 3.
(b) Using an ohmmeter, check that there is continuity between terminals 2 and 4.
If there is no continuity, replace the relay.
3. Reinstall circuit opening relay.