Computer diagnostics of the car: what it is and for what it is necessary

Computer diagnostics of the car: what it is and for what it is necessary

Computer diagnostics of a car is a simple and accessible method that allows you to accurately monitor the condition of the car. What is the service, how is it carried out and for what purposes does it serve?

A modern car requires modern ways of maintenance. One such way to keep your car in excellent condition is the computer diagnostics of your car. If the computer diagnostics show that your car should be scrapped, then get upset. If you recycle it, you can get good money for it:

What is the computer diagnostics of the car

A modern car is a complex system where everything is interconnected and controlled by electronics. Electronic circuits are present in all nodes and mechanisms: engine, chassis, transmission, suspension, brake system and so on. The most important element of the car, the engine, is controlled by the ECS – the electronic engine management system, which can be controlled by the electronic control unit (ECU).

Many sensors, located in the most important parts of the car, help to react quickly to malfunctions and identify faults with the help of a computer. Needless to say, this makes the diagnostic journey much easier. For example, when an engine malfunctions, in order to identify the cause, it is necessary to remove or disassemble the engine, attachments and more, which takes time and is a complex process. Besides, accordingly, carrying out such works in a car service center is not cheap.

Computer diagnostics allows identifying the cause much faster and easier. With its help, you can check any mechanisms, having interaction with the ECU. This is the engine, already mentioned above, the ignition system, injection system. ABS, EGR and AVCS, EPS, automatic transmission, airbags are also checked.

How Computer Diagnostics Is Conducted

What does the diagnostics shows and how long does it take? The specialist evaluates the operation of mechanisms, comparing with the accepted normal values. For this purpose, a scanner is connected to the onboard system through a special diagnostic connector. The device reads the errors, reviewing the information. The data are transmitted to the monitor, a specialized program decodes the codes and gives the final result. Depending on many factors, the process may take from ten minutes to three hours.

The quality depends on the level of professionalism of the specialist and the equipment used. The following devices are usually used:

Scanners. There are dealers’ scanners designed for certain brands of cars, equipped with a specialized program and used at dealerships. Scanners created exclusively for one brand have high accuracy and the widest set of functions. Such devices are able to detect an error and suggest a way to fix it, indicate the exact location of the fault and make corrections in the on-board computer program. Dealer’s scanner in the hands of an inexperienced user can cause a serious failure of your car, so you should entrust such a check to professionals.

The multimachine scanner is suitable for different brands, it identifies the location of the breakdown and the error code.

Portable scanner, as a rule, is used in small car service centers. It is used for determining the code and fault location.

Motor testers are used to detect the condition of the ignition system, voltage, cylinders, valves, pistons and other mechanisms.

Gas analyzers, as the name suggests, study the composition of the gas emitted, identifying motor breakdowns.

When and how often do I need to undergo diagnostics?

It is recommended that a serviceable vehicle be checked once a year. Preventive inspections will help to identify defects that do not manifest themselves in any way and prevent serious breakdowns, as well as reduce the likelihood of an accident.

Alarming symptoms indicating a breakdown that require immediate procedure may be of different nature. The most common are:

Signals of engine failure increased fuel consumption, higher or lower revolutions at idle, unstable operation of the engine. Also, longer warm-up time, loss of power, and other noises during engine operation should alert.

Urgent diagnostics of suspension is required if you hear a hum, a knock, or other noise when turning, or on rough terrain. Diagnosis is also required in case of uneven rubber wear, increased steering wheel travel, untimely actuation of the ABC system.

The automatic transmission declares malfunction by means of jerks, noises when shifting, inability to shift. An increase in fuel and oil consumption is also a symptom of failure.

The appearance of the “Check” signal on the instrument panel.

In addition, you should undergo the procedure before traveling long distances. Such a check will help to identify impending problems in time, conduct the necessary repairs and avoid breakdowns on the road.

This procedure is also performed before buying a used car. Many defects are difficult or impossible to notice during the inspection, the service will help to reliably determine the problems, both existing and imminent. An experienced master will tell you about all the minuses of the car, and you will be able to avoid buying a “pig in a poke”.



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