How do I check a car blade fuse without removing it?
- Switch on the circuit (e.g., lights). 2. Clip test-lamp ground to chassis. 3. Touch each top tab; lamp must glow on both. If one side is dark, the fuse is blown [Elektroda, T5, post #18847032]
How to check a car fuse
TL;DR
- A simple way to check a car fuse with a test lamp and the fuse box in place.
- Connect the crocodile clip to ground, touch the probe to each side of the fuse, and switch on the related circuit to test under load.
- A simple sampler from the market costs PLN 5-10.
- If the lamp lights on both sides, the fuse is working; if it lights on one side only, the fuse is blown.
- Never replace a fuse with a larger one, because it can burn the protected wiring or other components.
Generated by the language model.
Practically the best device for checking a fuse is the sight and the tester designed for this. We check the fuse under load. The meter can, in short, turn us into a balloon.
A simple sampler from the market for PLN 5-10.
This one was slightly modified for my needs.
We start checking with checking the instrument. Crocodile clip to ground, and the tip to the plus: shines = working.
We start checking our fuses. In this case it is possible to check without pulling out.
And remember that if we check the fuse from, for example, parking lights, we have to turn on the lights.
Checking yourself is very easy.
The crocodile clip to the ground, and the tip touches the fuse, first on one side, then on the other. When the test lamp is lit here and here, our fuse is working.
Here is an example of a functional fuse - the wire is intact.
And here the same fuse blown.
Another curiosity - in cars you can also find automatic fuses, like home ones - when it pops out, press a button and it works. It looks like.
The one in the picture is "stamped"
And here it is ready to go again.
There are also fuses that need to be pulled out to be checked. We can also check them in a simple way. Here is an example of a circuit breaker.
And one more important thing - the fuse, as the name suggests, is supposed to protect something. This must be the weakest element in the protected circuit. Replacing it with a larger one will end up with burning something, installation, driver, car, etc.
A simple sampler from the market for PLN 5-10.
This one was slightly modified for my needs.
We start checking with checking the instrument. Crocodile clip to ground, and the tip to the plus: shines = working.
We start checking our fuses. In this case it is possible to check without pulling out.
And remember that if we check the fuse from, for example, parking lights, we have to turn on the lights.
Checking yourself is very easy.
The crocodile clip to the ground, and the tip touches the fuse, first on one side, then on the other. When the test lamp is lit here and here, our fuse is working.
Here is an example of a functional fuse - the wire is intact.
And here the same fuse blown.
Another curiosity - in cars you can also find automatic fuses, like home ones - when it pops out, press a button and it works. It looks like.
The one in the picture is "stamped"
And here it is ready to go again.
There are also fuses that need to be pulled out to be checked. We can also check them in a simple way. Here is an example of a circuit breaker.
And one more important thing - the fuse, as the name suggests, is supposed to protect something. This must be the weakest element in the protected circuit. Replacing it with a larger one will end up with burning something, installation, driver, car, etc.
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Comments
And all you need is an ordinary working light bulb, anything you want from this car, and a piece of wire. [Read more]
Hello ! So how converted? It's a waste of time to rework. [Read more]
I have a car, so the topic interested me very much. I read and "hung" over the word "lightly". I carefully announced the first 2 photos and I do not see any modifications in this device. Maybe the... [Read more]
It is dimly lit, the bulb is probably changed to 24V. I recommend this type: https://obrazki.elektroda.pl/7668136900_1596206706_thumb.jpg Relatively robust, affordable and bulbs can be changed without... [Read more]
I mounted the LEDs in anti-parallel to my test tube. You can specify Polarity. [Read more]
The light bulb may have the advantage that in the case of lower voltage, some decrease, it will glow less. We notice that something is wrong. [Read more]
I know that the majority of society does not sin with intelligence, but it is probably not so bad that you have to explain to someone how to check the fuse. The more that we are on the technical forum. ... [Read more]
Did you burn for the text on purpose? :D They have been used in commercial vehicles (MAN, for example) a long time ago, useful when looking for short circuits, although I use a slightly different method. ... [Read more]
Even a long time ago, only they looked like switches. In city buses. (either Jelcz or Ikarus, I don't know anymore). Something around the '70s. In my opinion, the problem is different. As the... [Read more]
More often than blown fuses, I see tarnished fuse / receiver sockets. The test tube won't do anything. The search for the broken mass will also fail. As looking for faults in the installation in the... [Read more]
Just like the myth that deleting errors (fault codes) will repair the vehicle. As for the installation of oversized fuses, I had a case around 2009 that the 10A fuse from the dipped beam was blown. The... [Read more]
Sometimes the reason is obvious, easy to find, and sometimes on the contrary, there are factors such as temperature, humidity, shocks etc. Something happens "once in a time". [Read more]
Of course :) Losses must be sometimes :) I use a different method to search for a short circuit. Instead of a fuse, I connect an H7 bulb. When it shines, it is a short circuit - and I can safely... [Read more]
I am exactly the same :D that's why I wrote earlier; Because after several dozen minutes of searching, there will be a bucket of burnt fuses :D . It is also a mistake to put new ones on the receivers... [Read more]
And there are also - mainly in cars from behind the great water - circuit breakers - i.e. circuit breakers - mainly in circuits permanently exposed to overload (e.g. older electric windows). They are bimetallic... [Read more]
You can also slightly facilitate / automate the search for some "important" blown fuse in your car using LED adapters. Then the blown fuse is immediately visible, the replacement is easier because there... [Read more]
Jelcz under license from Berliet. The Ikaruses had ceramic. https://obrazki.elektroda.pl/6018047400_1596219242_thumb.jpg [Read more]
https://obrazki.elektroda.pl/8886960100_1596229517_thumb.jpg It is also worth adding that cheap fuses that can be purchased at gas stations and supermarkets are poorly suitable for use and are even... [Read more]
Some time ago I bought one in case of W but your attention will be remembered by me. You can actually forget yourself. smerdendes The truth was they were battleships, and very clear about the d... [Read more]