Operation CHARM: Car repair manuals for everyone.

Fuel Pump Relay: Testing and Inspection



PROCEDURE

Inspect Relay Continuity.

1. Disconnect negative (-) terminal cable from battery.

CAUTION: Work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative (-) terminal cable is disconnected from the battery.

Testing Relay Continuity:





2. Using an ohmmeter. check that there is continuity between terminals ST and E1.
3. Check that there is continuity between terminals +B and FC.
4. Check that there is NO continuity between terminals + B and FP.
If continuity is not as specified. replace the relay.

Inspect Relay Operation

Testing Relay Operation:





1. Apply battery voltage across terminals ST and E1.
2. Using an ohmmeter, check that there is continuity between terminals +B and FP.
If operation is not as specified, replace the relay.