Fuel pump issues

https://www.fixya.com/cars/t26885563-2001_subaru_outback_fuel_cutoff_switch

1. Check the fuel pump fuse: Locate your vehicle's fuse box (usually found under the dashboard or in the engine compartment) and check the fuel pump fuse. If it is blown, replace it with a fuse of the same amperage. If the fuse is fine, proceed to the next step.

2. Check the fuel pump relay: The relay controls the power supply to the fuel pump. You can typically find the fuel pump relay in the fuse box or a separate relay box. To test the relay, you can swap it with an identical relay (such as the horn relay) and see if the fuel pump starts working. If it does, the relay is the problem and needs to be replaced.

3. Inspect the wiring: Damaged or corroded wiring can cause a loss of power to the fuel pump. Check the wiring leading to the fuel pump for any visible damage, corrosion, or loose connections. Repair or replace any damaged wires and clean corroded connections.

4. Test the fuel pump for proper function: If you have access to a multimeter or test light, you can test the fuel pump terminals for power when the ignition is turned on. You should see a voltage for a few seconds as the pump primes. If there's no power at the terminals, the problem could be a faulty ignition switch, fuel pump control module, or a wiring issue.

5. Faulty fuel pump: If all the above steps show that power is reaching the fuel pump, but it is still not working, the pump itself might be faulty and need replacement.

The fuel pump not working in your 2005 PT Cruiser and the absence of a "fuel pump fuse" on the dashboard could be caused by a few different issues.

1. Blown Fuse: If the fuel pump fuse has blown, it will need to be replaced in order to restore power to the fuel pump. The fuse box in a 2005 PT Cruiser is typically located under the hood, on the driver's side.
2. Fuel Pump Relay: The fuel pump relay controls the power to the fuel pump. If the relay has failed, the fuel pump will not receive power and the engine will not start. The relay is usually located in the power distribution center or the engine compartment fuse box.
3. Fuel Pump: If the fuel pump itself has failed, it will need to be replaced. The fuel pump is typically located in the fuel tank.
4. Wiring Issues: Wiring problems can also cause the fuel pump to stop working. If the wiring has been damaged or is corroded, it will need to be repaired or replaced in order to restore power to the fuel pump.

If you are not comfortable diagnosing and fixing the issue yourself, I would recommend taking your vehicle to a certified mechanic. They will be able to diagnose the problem and make the necessary repairs.

The fuel pump comes on for a few seconds before you crank the engine. Most likely you can hear the buzz or hum of this with the windows up and all is quiet. If you don't hear this, Check the fuses first. Sometimes this fuse also has something else connected to it. Maybe the wipers or radio. But you must check all fuses. If all fuses are good, acquire a test light and find the wires going back to the pump from the fuse box. Test the wires for power, if no power at first, hold the test light on the wire and crank the engine over while testing the wire. If the light comes on, you have power to the pump but no fuel. Replace the pump.

I see that you posted the question yesterday. Hopefully by now you have resolved the problem.
If the problem still exists, check to see if you have power to the Fuel Pump Relay in the black plastic Relay Box located at the right front corner of the engine compartment. But first, give the box a modest tap with a hammer-like device. (A mechanic would never do that.)
If the relay is stuck, maybe time to replace it.
Write back with a status report. If we need to look elsewhere, let us know.

if no power is going to fuel pump.it is fuse or relay or open wire to fuel pump.also pcm.now if power going to fuel pump.and it wont run.replace fuel filter.

Put the key into the ignition and turn it to the second position. This position will light up the dash lights but will not crank the engine.
Listen for a faint or soft humming sound coming from the rear of the vehicle, specifically the gas tank. This will happen almost immediately after you turn the key to the second position, so you'll have to listen closely and be ready for it. The humming is the sound of the fuel pump priming, or pressurizing, the fuel system. If you do not hear this sound, you may have a faulty fuel pump.

1. Check to make sure there is enough fuel in the gas tank. Although this may seem obvious, it happens to the best of us. If you're gas tank is near empty, the engine may not start. This happens more frequently in the winter time in cold climates; the low temperatures cause condensation to form on the inside of the gas tank. Since water doesn't burn, the fuel pump tries to draw in fuel and instead gets a mixture of water and gasoline and cannot get enough fuel to the engine for combustion.
   Check to see that the vehicle starts. Even if you don't hear the fuel pump priming, attempt to start the vehicle. If the engine won't turn over (start) and you haven't heard the fuel pump prime the system, it is a good indication that the fuel pump may have failed.
   
   Check the fuel pump fuse. If the fuse is blown, the fuel pump will not prime. Open the fuse box under the dash of your vehicle and locate the fuse for the fuel pump. Alternately, some vehicles locate the fuel pump fuse in a fuse box under the hood. Remove the fuse box cover (specific removal will vary according to the vehicle). Check the fuse to see if the metal strip inside the fuse has popped. Replace the fuse if the metal strip has popped; if it hasn't popped, it is most likely your fuel pump itself that has failed.
   

did you try to replace the fuel pump relay ?

BAD FUEL PUMP

check your trunk for an emergency shut off button for fuel pump its usually a black littile box on the side with a red reset button in it