The best diagnostic scanners for cars. Which diagnostic scanner is better for VAZ?

To diagnose electronic systems of cars, this type of equipment is used, such as a diagnostic scanner. With the help of this device it is possible to carry out diagnostic work of almost all machine systems in a short time. This is possible due to the fact that most of the new cars are equipped with an electronic control and monitoring unit for systems and units. Due to the presence of various monitoring sensors, information on operating parameters and node status is transmitted to the host computer, and then it can be scanned by the scanner.

Types

The device can be made both in the form of an autonomous portable element and a whole multifunctional computer complex. In general, the diagnostic car scanner can be of two types - multi-brand and dealer.

The first type of devices has one significant advantage: it is compatible with different brands of cars. Automakers use in the equipping of their machines a variety of information protocols and different connectors for connecting test equipment. Therefore, the software of the universal diagnostic device allows you to work with a variety of transport, and a set of various connection adapters eliminates the problem of connecting the scanner to the systems.

The second type is devices that have the ability to check electronic systems of only certain brands of cars. Devices of this type are equipped with a lot of functionality and work as a universal diagnostic scanner. In this case, the presence of so-called slave diagnostics is provided in them. Due to it, the tester not only indicates a malfunction, but also is able to determine the cause, indicate the option of eliminating the error.

The functionality of scanning devices for each brand has its limitations. For example, with a multi-brand scanner, it is impossible to reprogram the electronic unit, to determine the cause of the malfunction and its method of elimination. To do this, you must additionally use special decoding directories, and then choose possible repair measures.

Oscilloscope and motor tester

The oscilloscope is a diagnostic scanner, with the help of which it is possible to obtain information about the workings of certain systems in a numerical or graphic equivalent and, accordingly, to compare them with standard values. More modern devices have the function of a motor tester.

The motor tester can work as an oscilloscope, and can also measure the electrical systems of the power unit. Reading of information is due to the sensors of the device, and not from the electronic unit.

Including oscilloscope mode, the motor-tester can check the operation of the sensors of the control unit, determine the parameters of signals from the unit to the devices of execution. It is also possible to check the condition of the wiring and the components of the ignition system. In the test mode, the operation of various motor systems is checked. For example, measurements are made of pressure in the engine cylinders, changes in crankshaft speed when one of the cylinders is turned off, vacuum measurements in the intake and exhaust manifolds, checking of starting currents and many other operations.

Additional options for the device include the ability to test liquid temperatures, fuel and lubricant pressure settings. Measurements are made using sensors of the device, which convert these indicators into electrical pulses.

Devices for the diagnosis of certain systems

Speedometer corrector. The basis of the device is the change in the readings of the speedometer. Additionally, the corrector can work as a programmer. If the car is replaced by a larger diameter wheel to a smaller, or vice versa, then to correct the error in the indications it is necessary to make an adjustment to the electronic unit.

Most of the correctors are equipped with additional functions and can be used as programmers and testers for other machine systems - airbags, anti-theft devices.

Immobilizer. Device that protects the car from hacking and hijacking. The probability of failure of anti-theft programs is as great as in other systems. Therefore, this device is used to decode and read indicators, to eliminate errors in operation and to update the program.

Choose a diagnostic scanner

The selection of an automobile scanner is a very serious matter. The device must meet certain standards, be of high quality and multifunctional. Below, we will consider several devices that enjoy a certain popularity.

"Scanman"

This device is universal. Can work with many protocols and provide in-depth testing of systems. Supports OBDII standards (ISO-15765-4 CAN, ISO-9141-2, SAE J1850 VPW / PWM, ISO-14230-2 KWP2000). Excellent not only for imported cars of European, American and Asian manufacturers, but also as a diagnostic scanner for VAZ.

"Askan-10"

Refers to professional devices for diagnosing powertrain systems. The device performs an extensive system check with the ability to reinstall the software. "ASKAN-10" supports all protocols of the standard OBDCAN, OBDII and EOBD, is intended for application to cars of imported production of budget class.

There are several modifications of the scanner - a basic model, an economy and a pro. It should be noted that this diagnostic scanner is very in demand in the market because of its multifunctionality, wide scope of application and ease of use, as well as price category

"Scanman-2"

This is a new development of this brand. To the existing functions was added the ability to support wireless scanning via Bluetooth, as well as stable operation from the USB cable already in the base configuration. To the already available program, maintenance protocols for diesel units (Cummins, J1939; D245) have been added.

DST-14NK1

Professional and multifunctional diagnostic scanner for VAZ, UAZ and other domestic cars. In addition, the device is equipped with certain functions of checking cars of foreign manufacturers. It is a dealer device of the motor company VAZ. Therefore, the use of such is provided for its various models. The connection of the device does not cause any difficulties, since all connectors and electronic outputs correspond to GOST.

MaxiSYS Pro

Wide functionality, a great resource for processing and storing information, high speed of operation. The device is made in the form of a tablet with an impressive display. Due to its practical properties and extensive application refers to professional equipment.

Four-core processor provides high performance, the implementation of a variety of tasks, the ability to simultaneously test different systems. At the moment the device has no analogues. It is believed that this is the best diagnostic scanner.

After power-on, it's ready to start working in thirty seconds, while competitive devices will take more than a minute of time to do this. Diagnostic operations on cars are made several times faster than in the case of using his fellow MaxiDAS, who is also considered a fairly fast scanner. The device can be applied to almost all known brands of automakers.

Advice of specialists

About which diagnostic scanner is best, there is much debate. And very often motorists are lost before choosing a particular type and brand of the device. To begin with, experts recommend defining, for what purposes a tester is needed, which duties will be assigned to it. It also takes into account the brand of the vehicle and the compatibility of the electronic device with it. For carrying out usual diagnostic actions it is enough to get not so expensive semiprofessional device. It will allow to determine a possible malfunction or to prevent its possible appearance. For more in-depth inspection and repair work at a professional level, it is desirable to acquire a more productive and multifunctional device. But it is worth considering that the price of such a device will be significant, so often they are purchased for servicing cars on qualified service stations.

Experienced motorists recommend initially consult a person who is knowledgeable in this plan, who will help with advice and tell you which diagnostic scanner can meet all the requirements.

Method of verification

The process proceeds in several stages, compliance with which is the key to a successful repair procedure:

• First of all, you need to use all the possibilities of computer diagnostics: count all standard digital and graphic values and error codes of the system that has failed.
• The results should be checked again.
• Then you need the diagnostic scanner to view the on-board computer information in real time. This functionality is used to check the status of the control elements of electronic equipment. On the instrument screen signals from the sensors and the values of the fuel injection adjustment systems are given for a certain period of time and at various operating modes of the motor. Further, the results are compared with the standard values and summarizes the status and operation of the instruments. The best diagnostic scanners for cars can work in modes of multichannel oscilloscopes, and therefore, receive graphical information of the dependence of parameters not only on time periods, but also on other sources. This test greatly facilitates the detection of possible causes of damage and malfunctions by comparing the resulting graphs with those indicated in the vehicle's technical chart. For quality testing, it is desirable to have a general understanding of the functioning of auto systems. Otherwise, it will be very difficult to achieve the desired result. Therefore, if it is not possible to perform the diagnostics independently, it is advisable to contact the technical service.

After completion of the work, it is necessary to clear the device memory of the trouble codes and retest. The on-board computer of the car can remember and save data about the operation of the machine's systems, and after updating the memory, the electronic unit will use the indications set in the standard until the moment when its parameters are not corrected for each system element. Later, after several working stages, the control unit sets the most optimal values in memory. During the reprogramming period of the control unit of the system, cars can work with small interruptions, but then everything falls into place.