Teach you to understand the car fuse bad people do not ask themselvesRecently idle to panic, abandoned to accompany more than a year old drive recorder, started a driving recorder navigation anti-dazzling back mirror one thing. Because the functionality is too powerful, you need to link the ACC power supply. Their understanding of the fuse is too weak, so toss for a long time to complete the new gadgets to install. Later, I recall the entire installation process, because I am not familiar with the fuse box, spent a lot of time in thoroughly understand the various functions of the fuse box. Then, I thought of everyone, I believe that the car fuse box familiar with a few, most people like me is "half a bucket of water." So, gave birth to this article, let me lead you to understand the working principle of car fuse box.
What is a car fuse?
Fuse, we are accustomed to the name, and its official name is called "fuse". The use of car fuses is the same as that of home fuses, and when the circuit current is abnormal and exceeds its rated current, the fuses play the role of a circuit protection barrier. Car fuses are roughly divided into two types of fast-blown fuses and slow-blown fuses.
Common fuses are high current fuses and low current fuses. Generally easier to access for medium and low current fuses. Medium and low current insurance can be divided into chip fuse (including automatic fuse box mini fuse), plug-in fuse, screwdriver fuse, tube fuse box flat fuse. Which we can access for medium-sized ATO or small fast-fused chip fuse. Chip fuses can carry small current, short pulse current, such as headlight circuit, rear glass defrost and so on.
The color of the car chip fuse international standards: 2A gray, 3A purple, 4A pink, 5A orange, 7.5A brown, 10A red, 15A blue, 20A yellow, 25A transparent colorless, 30A green and 40A deep orange. According to the different colors, you can clearly distinguish the size of different amps.
The conductors in the chip fuses are made of metal similar to solder and have a lower melting point than the conventional wires themselves. The size of the conductor is passed through a very precise calibration so that sufficient heat can be generated to fuse the conductor and disconnect the circuit when the rated current is reached. Fuses have two important operating parameters, one is the operating voltage, the other is the rated current, the owner in the purchase or replacement according to the circuit voltage and current to choose.
The location of the car fuse box
General car has two fuse boxes, one is responsible for the safety of the external electrical appliances, such as ECU, glass water, lights, speakers, ABS and other circuit security, located in the engine compartment; and the other responsible for the car Normal work, such as cigarette lighter, window movements, electric seats and airbags, etc., are generally located on the left side of the steering wheel. For example, before I then ACC power cord, you need to disassemble the car's fuse box.
Read the car fuse box
Although the fuse box has that location is the function of the fuse marked, but dotted with the logo and fuse, will make a lot of their own DIY owner discouraged. Before you start, you must understand the function of each fuse.
Remove the fuse and do not need to hand deduction directly. Each fuse box is equipped with tweezers to remove the fuse. Tweezers can be used at both ends to remove large and small fuses.
The picture below shows the fuse box legend and fuse one by one correspondence. The green logo is the fuse that will usually need to be replaced.
Replace yourself with a car fuse
1, according to different models to find the location of the fuse. The general fuse box is close to the battery. Fuse boxes are generally fixed with a snap, some senior models will have a bolt tightened, need to carefully remove the box to open the fuse.
2, carefully control the legend to find the fuse. Remove the fuse before the need to read the legend carefully read, generally easy to remove the fuse side easier to the upper legend.
3, with tweezers fuse pull out, put on a new can. The fuse box is normally equipped with spare fuses and away from other fuses for differentiation. Remove the fuse with tweezers and observe if it is blown. If the fuse is replaced, replace the appropriate spare fuse.
Car fuse replacement tips and precautions for use
If there is no spare fuse, use other idle fuses on top. Such as the windows of the fuse broken, just no spare fuse, and this time, you can put the sound, air conditioning, such as idle insurance, the premise of the same number of the same or more than the original fuse number is smaller.
Installation of high power lights. Change the power after the headlamps are too easy to fuse the fuse, should be replaced in time large current fuse and power cord. To prevent the current is too large and overheating.
Modified high-power audio. High-power sound also fuses the fuse. In the installation of high-power appliances, we must pay attention to switch to the size of the electrical current, the timely replacement of the corresponding fuse. Generally better modified shop will pay attention to this problem
Rinse the engine compartment with water. Clean the engine compartment, because the fuse box seal is not very appropriate, remember not to use water directly flush the fuse box, very lead to short circuit fuse, causing the vehicle electrical components failure. And most of the fuse box has a clear ban on water rinse the icon. If the fuse box is dirty, gently scrub with a wet towel.
Cigarette lighter using high-power appliances. The cigarette lighter is extremely easy to blow. General cigarette lighter with 15-25A specifications of the fuse. As the vehicle voltage at 12V, so the cigarette lighter connected to the electrical recommended no more than 300W, part of the small car does not exceed 200W. As for the car refrigerator, car inflatable pump and other high-power appliances or less use of cigarette lighter to take power for the better.
Under what circumstances to determine the car fuse broken?
Cigarette lighter, windows, air conditioning, lights and other electrical appliances with a separate strike, open the switch to hear the current or relay action sound, can be judged as broken fuse.
The vehicle does not work is the first consideration is whether the fuse is broken, and in the next step to deal with. It is especially important to be familiar with the fuse position of the vehicle.
to sum up
Past drivers are not only driving skills, and repair technology is also first-class, because the old vehicle is easy to go wrong (see now North Korea). Now a high degree of electrical electrification, through a small fuse and computer chip can control the vehicle oil circuit. Many problems can be solved by replacing the fuse, replacing the fuse is not a very difficult thing, even more than the replacement spare tire is also simple. Read the fuse can greatly reduce the unnecessary trouble and waste of money, so the owner should understand their own vehicle fuse and will be replaced.