As professionals say in the field of car repairs, all diagnostic products can be divided into two main groups, that is to say:
- Hardware tests: such a device connects to the on -board computer and reads all data alone
- Adapter testers
Most modern models are supplied with a connector to adapt to a personal computer (laptop). Professionals prefer these tests. However, it should be known to periodically update the software of this equipment and this is done only in authorized service centers. For optimal and complete operation, adapters require a fairly modern smartphone or laptop. The most common equipment are multibrand testers, which are used for most vehicles. When purchasing this equipment, it must be known that its price is directly proportional to the quality of the software. The larger the software, the greater the beach of the operations that the device can do.
2. Tops Universal Car Test I tested on car vrom
Category The best test models for professional cars:
| No/CRT | Tester brand | Advantages | disadvantage |
| 1 | Altare Maxisys Pro MS908P
|
100% professional device
Ultra Strong, offers an increase in diagnostic speed by 50% compared to other devices Complex diagnostic system Diagnostic even the most hidden and difficult defects This universal automatic tester is compatible for a wide range of car brands, even for the latest models. |
Translated into many languages, less in Romanian |
| 2 | Autocom Cdp Pro | Able to work with any car and truck software
Good price for a generation Compatible with a wide range of car brands Long life Forte Bluetooth mode |
Additional payment for the delivery of updates after the first year of operation |
| 3 | Bosch KTS 340
|
Very wide functionality, you can even remove the block of the property or adjust the headlights
The diagonal of the touchscreen is 8.5 inches The device can determine the vehicle brand and the date of its launch with your vehicles Describe all the error codes in detail |
High cost |
Average price category
| No/ CRT | Tester brand | Advantages
|
disadvantage
|
| 1 | Autol autolink
|
High working speed
Long life Autochuction There is a convenient application for your computer Support for a large number of protocols |
|
| 2 | Delphi TCS CDP+USB+Bluetooth | Reliable and resistant model
Easy to use interface Royal Diagnosis -Tethale due to the latest Delphi technology |
Little warranty period |
| 3 | Vas 6154 Wi-Fi Odis
|
Analyze the condition of all sensors on the car
Transfer all the data received to the user instantly Compatible with most of the operating systems available today |
Low price category
| No/CRT | Tester brand | Advantages | disadvantage |
| 1 | Orion Elm 327 Wi-Fi Micro
|
The identified errors are almost instantly restored
The information sent by this device is quite accurate Can connect via wireless channel |
When connecting to the smartphone or tablet, problems appear with the Internet |
| 2 | DELPHI DS150E | Very wide functionality
It can be used for about 100 car brands, regardless of the scheme |
|
| 3 | Elm 327 USB | The OBD software allows you to use your PC and a hardware interface to get all the information on the car’s computer. Allows reading and elimination of error codes. |
3. Technical information on cars tests
With the help of diagnostic devices, the specialist receives detailed information on the vehicle itself and its systems. With this device you can find the software version of the devices that control the operation of the engine and other electrical devices of the car. The tests show the car wine, the type of engine and the classes of the different control systems. Diagnostic devices analyze the state of the operating system, provide information in the form of tables and graphics. With the tester, it is possible to find the exact temperature of the technical fluids, the rotation speed of the engine tree, the effective value of the voltage in the electrical network, the weight of the air masses inside the engine, the position of the fuel valve, the composition of the fuel that enters the cylinders, etc. The collected data can tell a lot about the functionality of a vehicle. By comparing and analyzing the data collected, the specialist identifies those defects that are not available for the standard functions of cars -diagnosis.
An example, on a situation found by automotive specialists: the fuel power system is controlled. The tester indicates that the accelerator valve is halfway down, but the gas pedal is not pressed. What can this mean? The discrepancy detected indicates a defect of the strip sensors of the flap or the presence of mechanical damage.
Another important function of these tests is the reading of the data from the controller memory. The electronic control unit has the function of self-collection and storage of data regarding the functioning of the different systems on the vehicle. It also records the position and nature of the defects that appear. The diagnostic tools read this information and display them in the form of codes.
There is only one standard of coding all over the world.
Example: the P0125 code indicates the insufficient temperature of the engine cooling fluid.
Code meaning:
«P »- It is the letter that indicates the place of the defect (engine)
«0 » indicates that the error is included in the established standards table
The numbers «1», «2», «3» or «12», as in this case – identify the defect of the additional components (oxygen sensor) and the last figure «5» indicates that the sensor does not do its work.
Another concept you need to know when you work with a diagnostic tester is the State Flag. This word indicates further information on the defect detected. The State Flag indicates the current condition of the error.
FRIGLATION frame of the module
This is like correcting system parameters when the error was active. The tester provides this information in a list that helps identify further error data. There is the speed of the car, the speed of the engine, the room temperature at the time of the defect. This information helps to detect the cause of the defect. During the diagnosis, it is necessary to verify the activity of the system executive units. The tester does it using the commands to start and arrest the devices.
Example: the condition of the injectors is only verified during operation (when pressure is present in the fuel power supply system). To do this, you have to start and periodically stop the fuel pump. The tester automatically does it by monitoring the relay relay of the fuel pump.
Diagnostic tools can easily «learn» any relay or sensor in the system, injector, ignition block and even a bleed valve.
Modern cars cannot manage without special diagnostic procedures. Autonomous diagnosis allows you to find almost any more malfunction in shorter time. At the same time, there are no mechanical interferences in the work units and machines systems, which greatly facilitates these diagnoses.
4. When do you need a universal car tester?
If you are passionate about your car and you like to detect and repair yourself the minor defects, which do not need an elevator or service equipment, then you have to buy a tester dedicated to your car or multi-time, with which you can do:
- Identification / elimination of error codes
- Economy of time and money you would have given to the service
- Activations/ disable functions made with the coding support function
- You will get rid of the programming and tests for periodic cars, etc.
5 .. useful suggestions and conclusions
In conclusion: when diagnosed a car, it is possible to visually control: the frame, the body, the direction, the fuel, the braking systems, the lubrication system and others, but on a state of the last generation it is practically impossible, without a tester, which is why you have three options:
- To purchase this diagnostic device
- Borrow it from a friend
- Contact an authorized diagnostic center
Suggestions:
The first two variants are valid only for people who know how to use them and have the amount necessary for the purchase, which can be modest or coherent, depending on how much you like to be involved in such activities: only for your car or for friends and knowledge, if you do it only as a hobby or as an additional vehicle.
The third option is more realistic, because in an automotive service, for a moderate and short time, the complete diagnosis of the car is made by specialized people, who can offer useful advice and suggestions on the repair of the car, not only by reading the codes, but also interpreting them from the years of the experience.
The most important thing in the diagnosis of car is not the «refinement» of the tester, but the professionalism of the person who uses it. Therefore, when you buy a car tester for personal use, you should think if you don’t waste money, when it is much more convenient to resort to a specialized car service.
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