Fuel Pump Relay: Testing and Inspection

CIRCUIT OPENING RELAY INSPECTION



1. REMOVE CIRCUIT OPENING RELAY
2. INSPECT CIRCUIT OPENING RELAY
A. Inspect relay continuity



- Using an ohmmeter, check that there is continuity between terminals ST and E1.
- Check that there is continuity between terminals +B and FC.
- If there is no continuity, replace the relay.
- Check that there is no continuity between terminals +B and FP.
- If there is continuity, replace the relay.

B. Inspect relay operation



- Apply battery positive voltage across terminals ST and E1.
- Using an ohmmeter, check that there is continuity between terminals +B and FP.
- If there is no continuity, replace the relay.

3. REINSTALL CIRCUIT OPENING RELAY