Auto: computer diagnostics and equipment

All modern electronic control systems, which are designed to monitor the car, are equipped with a self-diagnosis designed to inform the driver of malfunctions. Many car enthusiasts noticed the Check Engine indicator that lights up when the key is turned. He extinguishes a second after the engine starts. If the system detects a malfunction in the vehicle, the indicator will not go out. In this case, you need computer diagnostics for your car. In case of a malfunction, you should immediately contact a specialist.

Job

Computer diagnostics auto even on machines with the same control system may differ. But the main principle is always the same: while the engine is running, at times of different modes, the readings from several dozen sensors are continuously read. In this case, discrete signals and dynamic signals are recorded.

The system responds to these signals by their type: a sensor that generates discrete signals is diagnosed as a break in the circuit in the event of a malfunction, and a sensor supplying a continuous dynamic signal has two error codes. The first indicates that the sensor is damaged, and the second indicates that the signal has gone beyond the parameters.

Control device

When computer diagnostics are carried out for a car, this device is checked. It can consist of either one block to which all other systems of the car are connected, or from separate nodes that are commuting with each other. If an error message occurs when the computer diagnostics is carried out for the car, the system stores the code in its long-term memory so that the experts can later decrypt it. After that, a signal is given that a freelance situation has occurred in the form that the driver will understand. Further, specialists perform their routine work. They are connected to the connector located on the control unit. Here, all the errors are read. After all the codes have been deciphered, the wizard decides on the following actions.

Detailed testing

It should be noted that the car is a collection of a large number of simple elements, and quite complex. And although the computer-based computer diagnostics detects most of the errors, because of the connectors that were improperly connected during the repair, or because of damage to the wiring, there are also situations that require detailed testing under different engine operating conditions. This is necessary in order to establish the exact cause of errors.

Resetting Errors

If the problem occurred accidentally (wiring, connectors, humidity), then to restore the engine it is often enough to simply reset the accumulated errors. Do not do this yourself by disconnecting the control unit from power or other methods. Such work must be entrusted to a specialist. After all, there is also computer diagnostics of cars with departure. So the wizard will be able to analyze all the errors. The control unit, seeing changes in the state of some parts of the car, makes its own corrections to optimize the operation of the systems and make it harmonized. After the memory is cleared, it will use the default settings. Such settings are not always optimal, and sometimes the entire cycle needs to be repeated several times in order for the memory zeroing symptoms to disappear.

After a forced reset, the operation may deteriorate. For example, it will be out of time, unclear, too abruptly to switch gears or idle speed will become high or low. Such a deterioration in the functioning of some systems does not indicate a malfunction, but it is not the norm either.

Computer diagnostics of cars in Minsk

In the capital of Belarus, there are many service stations that carry out this procedure. For example, the service "Carl Lux" carries out a full diagnosis of all the units of the car with subsequent repairs. STO "Motors" tests the suspension, engine, fuel system with the most modern equipment. And make an expert test master. Another service station that is popular is the "Bonus". It also tests all the main units of the car and, if necessary, makes quality repairs.

Diagnosis should be carried out according to plan, regularly. Its results should always be preserved. Then there is the possibility to narrow the range of possible failures and determine their character more accurately. Only in this case it will be possible to predict possible malfunctions.

The diagnostic process

The process algorithm consists of the following steps:

• Equipment for computer diagnostics auto reads all the information that will be needed for troubleshooting.
• It checks the relevance of the information received. That is, the circuits and connections are tested, the serviceability of sensors and the voltage of the on-board network. All this makes it possible to make sure that the data is suitable for use in the assessment.
• Get access to data transmitted in real time. This function is used to test sensors and system elements. The screen displays the parameters for changing crankshaft speed, fuel injection and other information.
• All the results obtained are analyzed. Masters draw conclusions about the presence and nature of the malfunction.

The main advantage of scanners is working as an oscilloscope. So the graphs of dependence on different parameters are obtained.

The master demands good engineering knowledge, as well as an understanding of the processes that occur inside the car. Therefore, a good specialist, who can be trusted, must have extensive experience in computer diagnostics of cars.

The result

In conclusion, it is necessary to say that the diagnosis is needed only to determine the state of the car. It facilitates troubleshooting, but is not a repair. Without this operation, in many cases, simply can not do. In a short time, an exact reason will be determined, which will significantly reduce the cost of repairs.