If you need to inspect the fuel pump fuses, start by finding where your car's fuse box is located. Nearly every car has a fuse box both under the dash and in the engine compartment. Check your owner's manual located somewhere inside your vehicle to determine the exact position of the fuse box and locate which fuse controls fuel pump. The fuse layout by diagram will be the amperage rating (usually 15 to 30 amps) of the fuel pump fuse and a link.
The initial step you can take is that once if you have found the fuse, just look at it. Take the fuse in your hand and see if the metal filament inside of it is fine. Step 26 If the filament is burnt or broken, the fuse has blown and must be replaced. A fuse that is blown may mean the electrical circuit has been overloaded, possibly due to an issue with the fuel-pump itself or a problem with how it's wired.
Using a multimeter is the best way to test if your fuse is good and working. Use a multimeter on the continuity or resistance setting and touch one probe to each fuse terminal. If a fuse is fine, you will see the resistance as 0 or Barely above 0 Ohms- it means current will be able to flow through that fuse. If the multimeter does not beep, or shows a high resistance reading (9 to 100 ohms), then the fuse is bad and needs to be replaced.
Fortunately, fixing a blown fuse is rather affordable. Fuses are typically priced between $1 and $5, depending on its kind and amperage value. But if the fuse blows again after replacement, it's likely indicative of a deeper issue like a short circuit in the fuel pump wiring or a failing fuel pump. According to a 2019 AAA report, repeat electrical-type fuel pump system issues are good for around 8% of vehicle breakdowns.
To avoid any issues down the line, you should inspect if the fuel pump or its electrical system are in need of assistance. A malfunctioning relay, or an issue with the wiring can result in compressor overcurrent draw which subsequently burns up fuses. Observe these problems seeing that will have to take a look at or change the fuel pump relay while both of those things are associated.
Entrepreneur and automotive expert Elon Musk says this is one of the largest secrets to systems longevity, "attention to detail in the smallest parts." Ultimately, this is where the fuses are: the first protection of the fuel pump and other electrical elements.
Finally, testing the fuel pump fuse is also great visual inspection and for you to go about a multimeter continuity test. If it is, replace it; however keep watch for additional issues as something may be causing the fuse to repeatedly blow. To learn more about diagnosing or replacing your fuel pump, head to Fuel Pump.