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The first character of the fault code
The fault code contains five characters, the first of which is a letter and the next four are numbers.
The second character of the fault code
1.Fault code p0
In the fault code, the "P" ** starting with "0" is the ** controlled by the ISO standard (e.g. P0099), which is the same for all car manufacturers and is predetermined by ISO ASE.
The P0100 series** is related to fuel and air metering.
The P0200 series** is also relevant for fuel and air metering.
P0300 Series** is related to the ignition system and the lack of fire condition.
The P0400 series** is related to auxiliary emission control systems.
The P0500 series** is related to vehicle speed, idle control system and auxiliary inputs.
The P0600 series** is related to faults within the control unit or dedicated circuits that connect the control unit and other control modules within a multiplexing system.
The P0700 series** is related to transmission control functions.
The P0800 series** is also related to transmission control functions.
**The last two digits refer to specific subsystems with their own diagnostics. For example, the P0115 refers specifically to the engine coolant temperature sensor.
The last two digits of some P0200 and P0300 series** are used to identify the specific engine cylinder for which the fault was detected. For example, P0300 means that multiple cylinders are out of fire, P0301 means 1 cylinder is out of fire, P0302 means 2 cylinders are out of fire, etc.
2.Fault code p1
In the fault code, the "p" ** starting with "1" is controlled by the car manufacturer (e.g. P11, the car manufacturer controls the fuel and air flow), which is predetermined by the car manufacturer, and may be manufacturer-specific, but it is also a standard**.
3.Fault code p2
Fault code P2 is also a standard fault and is a region of standardization (SAE ISO) and a specific manufacturer. Some are reserved for ISO, SAE, and some are faults that have already been posted**.
4.Fault code p3
Fault code P3 is also a standard fault**. Some are reserved for ISO, SAE, and some are faults that have already been posted**. P30, P31, and P32 all indicate fuel and air metering, as well as auxiliary emission controls; p33 indicates ignition system fire; P35, P36, P37, P38, and P39 are all ISO SAE reserved standards**.
The third character of the fault code
The third character in the fault code p0 00 confirms the system or subsystem in which the fault code occurred.
The fourth and fifth characters of the fault code
The last two characters in the fault code indicate the condition under which the fault code is triggered, specifically the actual part or a specific fault name. The fault code number is from 00 99, and different sensors, actuators, and circuits are assigned numerical numbers for different sections. These numbers provide more specific information such as low or high voltage, slow response, signal out of range, etc.
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It is recommended to read the system fault code first, find out the specific points, and carry out maintenance. What is the description of the fault.
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Computer problems, you know, it will be better to smash it directly.
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Personally, I suggest that learning auto repair has a greater prospect! With the development of society and the improvement of people's economic living standards, China's car ownership will gradually increase, and the automobile maintenance industry will have broader development prospects, and at present, in the structure of China's skilled workers, the ratio of technicians and above, senior workers, intermediate workers and junior workers is only 4:8
31:57, compared to 11:23 in developed countries
49:17, it can be seen that there is a shortage of middle and senior technical talents in China, and the "senior blue collar" of automobile maintenance has become a scarce talent. Automobile inspection and maintenance technology has become a hot and scarce skill, and more and more people are favoring it.
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It is difficult to say how much this kind of product costs, and the ** of each manufacturer is no.
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Personally, I think Lenovo's desktop is better.
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For these two majors, the working environment of auto repair is certainly not as comfortable as IT, but the IT industry is particularly carefully divided: ...Now the automotive industry is developing very well, the number of cars is also growing, and the auto repair industry is also benefiting accordingly.
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Definitely cars.
Maintenance, bai has the general relative family economic situation of the car du
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If it's easier, computer repair.
If you are tired, the car is repaired.
The future of car repair.
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It's good to learn from anywhere! It depends on whether you are good at learning or not, if you are fine, the salary is not a problem!
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It is recommended to learn auto repair well, as long as the technology is fine and the experience is good, it will be more popular than those college students. In addition, the key is that the prospects of the auto repair industry are still very good, and now there are more cars, repair or maintenance must be indispensable, so it is still a very good choice to learn this industry.
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It's good to learn car maintenance, and now car maintenance skills are pretty good.
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Automobile fault diagnosis instrument is an intelligent fault analyzer that we often use in daily automobile maintenance. By connecting the fault diagnostic instrument with the car, you can analyze the performance of various parts of the car and each part of the car, and judge the fault source of the car. Therefore, it is very important to be able to use the car diagnostic device correctly.
Today, I will introduce the use of the fault diagnosticator.
Step Method.
The world's major automobile manufacturers have their own special fault diagnosis instruments. The instrument has a manufacturer-specific decoding chip inside. At present, there are also a lot of manufacturers in China to produce a universal fault diagnosis instrument, the use of this general instrument only needs to choose different decoders, can be used to diagnose different manufacturers of cars.
However, the detection steps are generally the same.
Open the chassis, take out the troubleshooting device, and insert the decoder. Check out the test main line and the 16-pin test lead.
Connect the test main line with one end of the diagnostic instrument, the other end with the 16-pin test lead, and plug the other end of the 16-pin test lead into the communication socket of the instrument panel in the lower left corner of the car.
Turn on the ignition of the car, go to the start menu of the instrument, select the car diagnostic test function, and then OK. Entering the various functional tests of the car, it can basically complete 39 testable systems such as the engine system, transmission system, brake system, air conditioning and heating system, and anti-theft system of the car. Select one of them to enter the test interface, which can control the computer model, read the fault code, clear the fault code, and test the original test execution interface.
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The body computer of a car, also known as the car computer and the driving computer, is the control brain of a car. Friends who have driven a car must know that in the process of driving, by pressing some buttons, you can let our car open the door, or open the door of the box at the back, or if you want the engine to move, you can press the start button to make the car start. Actually, these are controlled through a computer board.
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The main function is to control the start of the vehicle and the opening and closing of the door, glass and door locks, receive and feedback information, and connect the engine and gearbox and other power modules. This is a Japanese car.
There are also German cars, on behalf of the model Volkswagen, its body computer function is more, because German technology has always been the world's first, which determines that the car it makes may have a few computers, like the body computer, it integrates more, this is the pride of Germany.
There are also Chinese cars, built by themselves, the function is relatively simple, technical limitations, there may be cars that control the doors.
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Nowadays, there are a lot of computers installed in cars, and when you say body computers, you generally refer to ECUs.
The simple principle is as follows.
1.The engine of the car is controlled by the car computer (i.e. ECU).
Control the amount of air intake, fuel injection, ignition time, etc., to determine the engine operating efficiency, power, torque, etc.
3.When the engine works under various speeds, gears, loads, temperatures and other conditions, the 'corresponding' air intake, fuel injection, ignition time and other information, at present, in some middle and high-end cars, not only in the engine ECU, in many other places can be found traces of ECU. For example, the anti-lock braking system, 4-wheel drive system, electronically controlled automatic transmission, active suspension system, airbag system, and multi-directional adjustable electronically controlled seats are all equipped with their own ECUs.
With the improvement of electronic automation of cars, ECUs will increase day by day, and the lines will become more and more complex. In order to simplify the circuit and reduce costs, the information transmission between multiple ECUs on the car needs to use a technology called multiplexed communication network, which forms a network system of the ECU of the whole vehicle, that is, the CAN data bus.
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Generally, 4S shops use engineering computers to set up information about automotive EFI and other equipment. It does not provide a regular interface to connect to a computer.
Because it is related to many aspects, no one generally develops cracked products.
But underground car parties generally have special equipment for matching notebooks and car circuits. It's hard to say too much about this.
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It takes a long time to learn to repair a car, and you must know how to use various tools, jacks, socket wrenches, activity wrenches, etc., and it takes a long time to learn to repair cars. Learn to learn computers, it's simple and easy to understand.
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