Fuel Shut-off Solenoid Relay: Testing and Inspection

Fuel Cut-Off Relay:

1. With ignition switch off, reach behind fuse box and remove the fuel pump cut-off relay.
2. Connect positive probe of voltmeter to the Black/Yellow terminal at the fuel pump cut-off relay connector (from the ignition switch) and negative probe to ground. Turn the ignition on and check for battery voltage.
^ If no voltage is indicated, check fuse and wiring between relay and ignition switch.
^ If voltage is indicated, proceed to step 3.

Relay Voltage Check:

3. Connect positive probe of voltmeter to the Blue terminal at fuel pump cut-off relay connector and negative probe to ground. Turn the ignition on and check for battery voltage.
^ If no voltage is indicated, check blue wire circuit between connector and ignition coil negative terminal.
^ If voltage is indicated, proceed to step 4.

Jumper Connections:

4. With ignition switch off, disconnect fuel pump cut-off relay from harness connector. Connect the two Black/Yellow wires together with a jumper wire. Turn ignition ON and check for fuel pump operation.
^ If fuel pump operates and voltage was available in step 3, replace fuel pump cut-off relay and retest.
^ If fuel pump does not operate, proceed to step 5.

Checking For Voltage At Pump:

5. With jumper still connected from step 4, check for battery voltage at the fuel pump wires as shown.
^ If no voltage is present, check the Black/Yellow wire between relay and pump.
^ If voltage is present, check fuel pump. Testing and Inspection