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

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

To diagnose the electronic systems of cars, a type of equipment such as a diagnostic scanner is used. With the help of this device, it is possible to carry out diagnostic work on almost all machine systems in a short time. This is possible due to the fact that the bulk of new cars are equipped with an electronic control unit and monitor the operation of systems and assemblies. Due to the presence of various monitoring sensors, information about the operating parameters and the status of the nodes is transmitted to the main computer of the car, and only then it can be read by the scanner.

Types

The device can be made both as a stand-alone portable element and as a whole multifunctional computer complex. Basically, a 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 various car brands. Automakers use a variety of information protocols in equipping their cars and different connectors for connecting test equipment.

Therefore, the software of the universal diagnostic device allows you to work witha variety of transport, and a set of various connection adapters eliminates the problem of connecting the scanner to systems.

The second type - devices that have the ability to check the electronic systems of only certain brands of cars. Devices of this type are equipped with many functionalities and work like a universal diagnostic scanner. At the same time, they provide for the presence of the so-called guided diagnostics. Due to it, the tester not only indicates a malfunction, but is also able to determine the cause, indicate an option to eliminate the error.

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

Oscilloscope and motor tester

Oscilloscope is a diagnostic scanner, with which you can get information about the operation of certain systems in a numerical or graphical equivalent and, accordingly, 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. The reading of information occurs due to the sensors of the device, and not from the electronic unit.

Turning on the oscilloscope mode, the motor tester can check the operation of the block sensorscontrol, determine the parameters of the signals from the block to the execution devices. It is also possible to check the condition of the electrical wiring and elements of the ignition system.

In the test mode, the operation of various motor systems is checked. For example, pressure measurements are made 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 starting currents and many other operations.

Additional device options include the ability to test fluid temperatures, fuel pressure parameters and lubricants. Measurements are made using the sensors of the device, which convert these indicators into electrical impulses.

Device for diagnosing certain systems

Speedometer corrector. The operation of the device is based on a change in the speedometer readings. Additionally, the corrector can work as a programmer. If the car is replacing wheels of a larger diameter with a smaller one, or vice versa, then to eliminate the error in the readings, it is necessary to make adjustments to the electronic unit.

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

Immobilizer. A device that protects the car from breaking and stealing.

The likelihood of anti-theft software failures is as high asas in other systems. Therefore, this device is used to decode and read indicators, eliminate errors in operation and update the program.

Choosing a diagnostic scanner

Selecting a car scanner is a pretty serious matter. The device must meet certain standards, be of high quality and multifunctional. Below we will consider several devices that are very popular.

Scanmatic

This device is universal. Can handle multiple protocols and provides in-depth system testing. 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 power plant diagnostic devices.

The instrument performs an extensive system check with software reinstallation. "ASKAN-10" supports all protocols of OBDCAN, OBDII and EOBD standards and is intended for application to imported cars of budget class.

There are several modifications of the scanner - basic model, economy and pro. It should be noted that this diagnostic scanner is in great demand in the market due to its versatility, wide scope and ease of use, as well as the price category

Scanmatic-2

This is a new development of this brand. Support for wireless scanning via Bluetooth has been added to the existing functions, as well as stable operation from a USB cable already in the basic package. Diesel unit maintenance protocols (Cummins, J1939; D245) have been added to the existing program.

DST-14NK1

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

MaxiSYS Pro

Wide functionality, great resource for processing and storing information, high speed.

The device is made in the form of a tablet with an impressive display. Due to its practical properties and extensive application, it belongs to professional equipment.

Quad-core processor provides high performance, multi-tasking capability, simultaneous testing of different systems. At the moment, the device has no analogues. Considered to be the best diagnostic scanner.

Once turned on, it's ready to go to work in just 30 seconds, compared to more than competitive devices.minutes of time. Diagnostic operations on a car are performed several times faster than in the case of using its fellow MaxiDAS, which is also considered a fairly fast scanner. The device can be applied to almost all well-known car brands.

Expert Tips

There is a lot of debate about which diagnostic scanner is better. And very often motorists are lost before choosing one or another type and brand of device. To begin with, experts recommend deciding for what purposes a tester is needed, what duties will be assigned to it. The brand of the vehicle and the compatibility of the electronic device with it are also taken into account. To carry out the usual diagnostic measures, it is enough to purchase a not very expensive semi-professional device. It will allow you to determine a possible malfunction or prevent its possible occurrence.

For a more in-depth inspection and repair work at a professional level, it is desirable to acquire a device that is more productive and multifunctional. But it is worth considering that the price of such a device will be significant, so they are often purchased to service cars at qualified service stations.

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

Verification method

The process takes place in several stages, compliancewhich is the key to a successful repair procedure:

• First of all, you need to use all the possibilities of computer diagnostics: read all standard digital and graphic values and error codes of the system that has failed.
• The results must be rechecked.
• 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. Signals from sensors and values of fuel injection control systems are sent to the screen of the device for a certain period of time and in various engine operating modes. Further, the obtained results are compared with standard values and summed up on the state and operation of the devices. The best diagnostic scanners for cars can operate in multi-channel oscilloscope modes, which means they receive graphical information on the dependence of parameters not only on time periods, but also on other sources. This testing greatly facilitates the detection of possible causes of damage and failures by comparing the obtained graphs with those indicated in the vehicle's technical data sheet. For high-quality verification work, it is desirable to have a general idea of \u200b\u200bthe functioning of auto systems. Otherwise, it will be very difficult to achieve the desired result. Therefore, if it is not possible to carry out diagnostics on your own, it is recommended to contact the technical service.

After completing the work, you need to clear the memorydevice from fault codes and retest.

The car's on-board computer can remember and save data about the operation of the machine's systems, and after updating the memory, the electronic unit will use the readings set as standard until the moment when the parameters for each system element are adjusted in its memory. In the future, after several working stages, the control unit sets the most optimal values in memory. During the period of reprogramming the control unit, auto systems may work with minor interruptions, but then everything falls into place.