How to Test Car Fuses with a Multimeter (Guide)

Replacing a faulty fuse is simple. Knowing how to replace it yourself will save you time and money. You can avoid costly mechanic fees and complete this relatively easy task on your own.

To guide you through the process of testing your car’s fuse, I’ve outlined 4 key steps. In General, testing and replacing a car’s fuse requires 1. identifying the fuse type, 2. setting up the multimeter, 3. connecting the probes, and finally 4. replacing the faulty fuse.

In this guide, we will guide you through these steps in more detail.

You will need the following tools:

  • A replacement Fuse (The same type as your car) (1)
  • A Digital Multimeter
  • Pliers
  • Owner’s manual (If available)

Identifying the Car’s Fuse Type

Identify what type of fuse your car is using to select the correct replacement fuse. Nowadays, the most common types of fuses found in cars are the Blade Type Fuses you can see in the picture below. If you aren’t sure, check the owner’s manual for fuse type.

fuses

Setting Up your Multimeter

Follow these steps to get your multimeter ready for your car.

1. You’ll notice there is a knob in the middle and a series of numbers and symbols surrounding that knob. All you need to find is the Ohms sign, in some, you will see an Omega logo instead. (2)

2. When you find this sign, turn the knob towards it. Look for the lowest number available in your multimeter, usually, it’s 20 Ohms.

green multimeter

Connecting the Probes

Now that your multimeter is ready, you can start checking.  

1. The multimeter comes with 2 cables, known as probes. The pointed needle-like metal tips at the end are the test pins.  

2. Tap the pins onto the strips of metal at both ends of the fuse while it still sits in the fuse box.  

3. Some multimeters have a beeping sound. It is to tell you that there is continuity between what the probes are touching.  

4. A good fuse is always the one where continuity is present, so if you hear a beep sound, that fuse is good.   ‘

5. If your multimeter does not have a beeping sound, check the reading. If it indicates “0.00” then the fuse is good, if it gets a reading for example of “1” then the fuse is bad.

Replacing the Fuse

1. Use a plier and grab the faulty fuse in the middle or at the sides.  

2. Dispose of the faulty fuse and insert the new replacement.  

3. Start the car and check if the new fuse worked.

Wrapping Up

When you have a multimeter, you can test your car’s fuses with ease. Next time have a faulty fuse; you don’t need to go to your mechanic right away. You can now test it yourself.

Take a look at some of our related articles below.




References
(1) types of car – https://www.caranddriver.com/shopping-advice/g26100588/car-types/
(2) logo – https://medium.com/makersdesign/what-is-a-logo-6facd73e5b86

About Sam Orlovsky

b1d87d2ee85af3e51479df87928bdc88?s=90&d=mm&r=gI realized early on carpentry was a huge passion for me and I’ve stayed in the industry for over 20 years now. This gives me a unique ability to really be able to tell you what the best tools and recommendations are. I’m not only a carpenter but I also like machinery and anything to do with electrics. One of my career paths starting off was as an apprentice electrician so I also have a lot of experience with electrical products and anything related.