Fuel Pump Relay

Turn ignition switch to the "ON" position. The fuel pump should run for 1-2 seconds and then stop. If pump does not run, or does not stop, continue testing.
Check that inertia switch cut-out button is pressed in. Remove inertia switch cover and attaching screws and check to see that the wiring harness connection is secure. Remove wiring harness connector from switch and check for continuity across switch terminals.
Pull out button on inertia switch, and check for an open circuit across switch terminals. Reconnect wiring harness connector and replace switch cover. Reset inertia switch button.
If inertia switch operates to specifications, ground terminal No. 85 of fuel pump relay and turn ignition switch to the "ON" position. Check for battery voltage at terminal No. 86 of main relay. If battery voltage is not present, check battery supply from ignition switch via inertia switch.
Check for battery voltage at terminal No. 87 of main relay. If no voltage is present, check for battery voltage across terminal No. 85 and ground connection of main relay. If voltage is now present, replace main relay.
Check for battery voltage at terminal No. 86 of pump relay. If no voltage is present, check for an open circuit between terminal No. 87 of main relay and terminal No. 86 of pump relay and correct as necessary.
Check for battery voltage at terminal No. 87 of pump relay. If no voltage is present, check for battery voltage across terminal No. 85 of pump relay and ground lead. If voltage is now present, replace pump relay.
Check for battery voltage at terminal No. 30 on both relays and at fuel pump positive terminal. If no voltage exists, check for an open circuit between terminal No. 87 of pump relay and positive terminal of pump and correct as necessary.
If pump still does not operate, check ground connections or replace pump.