Auto: computer diagnostics and equipment

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

All modern electronic control systems that are designed to control the car are equipped with self-diagnosis, designed to inform the driver about malfunctions. Many motorists have noticed the Check Engine indicator illuminating when the key is turned. It goes out a second after starting the engine. If the system detects a malfunction in the vehicle, the indicator will not turn off. In this case, computer diagnostics is required for your car. In the event of a malfunction, you should immediately contact the specialists.

Work

Computer diagnostics of a car, even on machines with the same control system, may differ. But the main principle is always the same: during engine operation, at the moments of various modes, readings are continuously read from several dozen sensors. At the same time, discrete and dynamic signals are registered.

The system reacts to these signals according to their type: a sensor that generates discrete signals is diagnosed as a break in the circuit in case of malfunctions, and a sensor that supplies 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 auto, this device is checked necessarily. It can consist either of a single unit to which all other vehicle systems are connected, or of separate nodes that are switched among themselves. If an error signal occurs at the moment when computer diagnostics are carried out for the car, the system stores the code in its long-term memory so that specialists can decrypt it later. After that, a signal is given that an emergency situation has arisen in a form that will be understandable to the driver. Next, the experts do their routine work. They are connected to the connector, which is located on the control unit. All existing errors are read here. After all the codes are deciphered, the master decides on the following actions.

Detailed testing

It should be noted that a car is a combination of a large number of both simple elements and quite complex ones. And although the computer diagnostics carried out for the car reveals most of the errors, due to the connectors that were incorrect during the repairconnected, or due to damage to the wiring, there are also situations that require detailed testing under different operating conditions of the engine. This is necessary in order to establish the exact cause of the errors.

Reset errors

If problems occurred by accident (wiring, connectors, humidity), then to restore the engine it is often enough to simply reset the accumulated errors. You do not need to do this yourself by disconnecting the control unit from the power supply or by other methods. Such work should be entrusted to a specialist. After all, there is also a computer diagnostics of a car with a departure. So the master will be able to analyze all the errors. The control unit, seeing changes in the state of some vehicle components, makes its own amendments in order to optimize the operation of the systems and make it harmonious. After the memory is cleared, it will use the default settings. These settings are not always optimal, and sometimes the whole cycle needs to be repeated several times in order for the memory reset symptoms to disappear.

Performance may deteriorate after a forced reset. For example, there will be untimely, fuzzy, too abrupt gear changes or idle speed will become high or low. Such 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 "Karl Lux" conducts a complete diagnosis of all components of the car with subsequent repairs. STO "Motors" tests the suspension, engine, fuel system with the most modern equipment. And they are checked by experienced craftsmen. Another service station that is popular is Bonus. They also test all the main components of the car and, if necessary, make high-quality repairs.

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

Diagnosis process

The process algorithm consists of the following steps:

• Auto computer diagnostic equipment reads all the information that will be needed for troubleshooting.
• The relevance of the information received is checked. That is, the circuits and connections, the he alth of the sensors and the voltage of the on-board network are tested. All this makes it possible to make sure that the data is suitable for use in the assessment.
• Access real-time data. This function is used to test sensors and system elements. The screen displays the parameters for changing the crankshaft speed, fuel injection and other information.
• All results are analyzed. Masters draw conclusions aboutthe presence and nature of the problem.

The main advantage of scanners is their work as an oscilloscope. This is how graphs of dependence on different parameters are obtained.

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

Result

In conclusion, it is worth saying that diagnostics are needed only to determine the condition of the car. It facilitates troubleshooting, but is not a repair. In many cases, this operation is simply not enough. In a short time, the exact cause will be determined, which will significantly reduce the cost of repairs.