Autocom (autocom) is a modern diagnostic tool that serves as a link between the car and the computer. It works on old and new cars. With it, you can carry out car diagnostics since 1988. In total, almost 50 is supported. different marks machines.
Schemes of pinching connectors
Many are faced with the problem of pinout cables for trucks carsTherefore, the editorial office of 2 schemes gathered a complete collection of bonds and connections of such cables.
Autocom cable sets
There are universal sets, such as a set of Autocom CDP + Trucks diagnostic cables - is used to connect Autocom CDP + autocurner to trucks with diagnostic connectors of an old sample.
List of cables included:
- Autocom Diagnostic Cable - Knorr, Wabco Trailer 7 Pin
- Diagnostic Cable Autocom - MAN 12 PIN
- Autocom Diagnostic Cable - MAN 37 PIN
- Autocom Diagnostic Cable - Iveco 30 PIN
- Autocom Diagnostic Cable - Scania 16 Pin
- Autocom Diagnostic Cable - Mercedes-Benz 14 PIN
- Autocom Diagnostic Cable - Renault 12 Pin
- Autocom Diagnostic Cable - Volvo 8 Pin
With software package Trucks, you are able to perform diagnostics concrete brand For LEAD and heavy commercial vehicles, buses and trailers since 1995. In total, 37 different brands.
Content program description
List of supported ECU:
Engine diagnostics according to OBD2 protocol
- Engine diagnostics by factory protocols
- diagnostics electronic systems Ignition
- Diagnosis of climate management systems
- Diagnosis of immobilizers
- diagnostics of transmission control systems
- Diagnostics of ABS systems
- diagnostics SRS Airbag systems
- Diagnostics of dashboard and reset service intervals
- Diagnosis of Comfort Systems
- Diagnosis of body electronics systems
The Generic diagnostic program is designed for diagnostics based on standards, specifically designed to bind and standardize fault codes. Generic is included for passenger and cargo options.
2xhs CAN protocols and standards (ISO 11898-2), SW CAN (SAE J2411), K / L (ISO 9141-2), VPW (J1850), PWM (J1850), RS485 (J1708), TTL and (SPI, Analog IN, 5VOLT OUT).
Using the function of the side recorders, you can record the parameters in real time during the movement of the vehicle. During recording, you can, press the button, highlight and remember the specific error in order to study it later. TCS CDP + is equipped with built-in memory, which eliminates the need to use the computer. The memory is not included.
With multicolor AUTOCOM indicator, you have the ability to fully control the diagnostic process. Various colors and sound prompts will indicate you which diagnostic stage is executed at the current time. For example, if the indicator switches between blue and green communicates with the car control unit.
When AutoCom is connected to the car, the device will check the voltage board of the vehicle network and automatically adjusts to the voltage level of the car 12 or 24 volts. If the voltage becomes too high or too low, AutoCom will warn you as a sound prompt and a light indicator, as well as alerts through the battery icon in the software.
The software has a function that allows you to read the chassis number from the car you would like to be diagnosed. This ensures that the model and year of release will be automatically released. In addition, the engine code for vehicles, which are usually available for reading, is also automatically selected.
The Intelligent Scanning System (ISS) views all systems in the car and displays the fault codes that are stored in each system. It saves time and you will get a quick review of the current state of the car as a whole. When the ISS is completed, you can choose a special control system to analyze the results in the future.
Intelligent identification systems (ISI) defines and automatically selects the type of controller, which is installed in the vehicle. This ensures that the diagnostic session will be completed correctly with the correct parameters as required.
In accordance with this feature, you can see adaptation and adjustments that are possible for a particular car without having a car near you. Together with the help of texts as a guide, you can plan and be effective in your work, and even in difficult situations.
Autocom autocane is equipped with a unique multiplexer technology, which allows you to use it on all types of vehicles, regardless of the voltage level and communication standards. For those vehicles that do not use the standard 16-pin connector, there is the possibility of connecting and special adapter cables.
Video instruction
You can also get acquainted with the pinout diagnostic connectors
renault diagnostic connector
diagnostic connector Opel
diagnostic connector KIA
Currently, the overwhelming number of foreign cars, as well as cars domestic production Have an OBD2 diagnostic connector. Through this connector, you can connect diagnostic equipment to diagnose your car, as well as connect onboard computers and other devices running through a diagnostic block. Sometimes users have a question on the pinout diagnostic pads of certain car brands. For your convenience, we offer ready-made adapters to work with various diagnostic blocks of cars. However, if you forgot to purchase an adapter for your car or you needed it in emergency to make it, or connect the adapter directly, then in this article you will find information about the pilot of the OBD 2 pads, as well as cars of Russian and imported production.
Plifunction of the OBD 2 pads (the most dispersed version in foreign cars since 2002, as well as is installed in all VAZ cars after 2002 G.V.):
Contact Designations:
7-K-line of diagnostics
4/5 - GND protruding contacts
16 - power adapter + 12V
Plotchka VAZ pads until 2004:
Contact Designations:
M - K-line diagnostics
H or G - Power Adapter + 12V
When connecting the adapter without a pad directly to wires, the power is better to take from the cigarette lighter, since the contact is shown in Figure H, depending on the model, may not be divorced, and when using G, the fuel pump gives very large impulses that can damage the adapter.
(In 99% of cases, you can use the indicated contacts because damage to the adapters from the fuel pump is practically not found.)
Gas connector (Gazelle) UAZ
Contact Designations:
2 - power adapter + 12V
12 - Massa
10 - L-line of diagnostics (may not be divorced, as a rule is not used)
11 - K-line diagnostics
Pinout pads Daewoo Nexia. N100, Matiz, Chevrolet Lanos., ZAZ CHANS.:
M - K Connector - Diagnostic Line
Connector A - Mass
H - + 12V connector (voltage in this jack may be missing on some models of cars)
Connector G - + 12V from ignition lock (possibly lack of voltage when the ignition is turned on and the engine unused on some car models
If you are interested in the location of the diagnostic pad in your car, as well as the pinout of the diagnostic block of car other brands. You can familiarize yourself with them through a systematized directory of diagnostic adapters. Download the bulk of the car pad.
Diagnostic connector OBD.
In this article I will try to introduce you to the principles of the engineering engine from the electrical chains. It is the opinion that the carburetor is simple, reliable and unpretentious, and the injector ... no better than the "injector ...". My personal opinion is not necessary to listen to such expensive. We just need to understand the question.
In order to understand the "breathe" the car there is a diagnostic connector. The view that he now has appeared not immediately. As always, America helped us. The fact that they are with fat are silent, we know, but the fact that something is coming from this is a pretty rare case. However, in order. A very long time the US government supported its automotive industry (not to be confused with what is happening in Russia). But here they scored anxious environmentally, the most that anti-warming machines, they say, spoil the nature of your cars. Commissions, committees and subcommittees, decrees ... Manufacturers did the view that they obey, and in fact neglected everyone than just possible. And so the energy crisis struck the decline in production, the automakers were thoughtful, to ignore the government's decisions became obligatory. Here in such a complex setting and created the rules of OBD (On Board Diagnostics www.obdii.com. For those who rub in Anglitsky). Each manufacturer used its emission control methods. To change this position, the Association of automotive engineers suggested several standards, it is believed that the Birth of the OBD occurred at the time when the Department of Air Control did many of these standards mandatory in California for cars since 1988. Only a few parameters were tracked: oxygen sensor, exhaust recirculation system, fuel supply system, and an engine control unit in the context of exceeding exhaust gases. But the order did not succeed in this way, but only more confused. First, monitoring systems were literally attracted by ears to old cars, as they were created as additional equipment. Manufacturers only formally performed requirements, the cost of the car increased. Secondly, the independent services were seeded - each car became almost unique, it was required by a detailed manual of the manufacturer, a description of the codes, a scanner with its connector. The US government turned out to be guilty, he was accused of manufacturers, environmentalists, service stations, car enthusiasts. In 1996, it was decided that all car manufacturers selling their products on the territory of the United States should adhere to OBDII standards, recycled OBD specification. Thus, OBDII is not an engine control system, as many believe, and a set of rules and requirements that each manufacturer must comply with to comply with the US federal standards. exhaust gases. For a deeper understanding, I propose to consider in more detail the basic requirements of the standard.
1. Diagnostic connector of the OBDII standard. Its basic function to provide a diagnostic scanner with control units compatible with OBDII and comply with SAE J1962 standards, i.e. it must be in one of the eight places defined by the Protection Agency ambient (In both !!!) and within 16 inches from the steering column. Each contact has its purpose, some, for example, are given to the discretion of the manufacturer, the main thing is that they do not intersect with the control blocks compatible with OBDII.
Consider more connectors. 4, 5, 16 connectors are powered, this is done for convenience for convenience - the supply voltage is immediately fed to the scanner, a separate wire is required, for example, a cigarette lighter. 2, 10, 6, 14, 7.15 actually conclusions of three equivalent standards. Manufacturers can choose which to use for their products. Thus, from the point of view of the connector and protocols there is a complete unification.
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Thus, Hyundai disposed the diagnostic connector. Please note that the numbers of the connectors in the pictures do not match, since the shoe and plug are depicted.
2. Standard communication protocols for diagnostics. As we see the standard there are only three protocols. The algorithm of work is a simple "request - answer." The protocols themselves are still classified by the rate of data exchange.
BUT - The slowest 10 KB / s. The ISO9141 standard uses the class A. protocol
B. - Accord 100 KB / s. This is the standard SAE J1850.
FROM - Accordability 1 MB / s. The most used class C for cars is a CAN protocol.
Consider these protocols ..
Protocol J1850. There are two types: J1850 PWM. ((Pulse width modulation - pulse width modulation) high-speed, providing 41.6 KB / s. It uses Ford, Jaguar and Mazda. In accordance with the PWM protocol, the signals are transmitted along two wires to contacts 2 and 10. J1850 VPW (VARIABLE PULSE WIDTH - Variable pulse width) supports data transmission at a speed of 10.4. Krib / s. It uses General Motors (GM) and Chrysler. This protocol uses one wire and uses connector 2. ISO 9141. not so complicated as J1850does not require communication microprocessors. It is applied in most European and Asian cars, as well as in some CHRYSLER models.
Here I want to make a small digression for owners car Hyundai.. Please note that we have 2 contacts (protocol ISO 9141.), nothing else, as the well-known K-Line. And this opens up ample opportunities for using BC made for VAZ cars. After all, what the creators of OBDII - compatibility were achieved, then she will get. There is one nuance, but a little later.
3. CHECK ENGINE FULL NAME LIGHT. It lights up when the engine control system detects a problem with the composition of exhaust gases. Its assignment to inform the driver that in the process of operation of the engine control system there was a problem. It is necessary to interpret it as follows. "It would be nice to call in service" and that's it. The engine will not explode, the car will not light up. Another thing is if the oil indicator lights up or the engine overheating warning. Then you need to panic. Check Engine light is triggered by a specific algorithm, depending on the severity of the malfunction. If the malfunction is serious and urgent repair is required. The indicator lights up immediately. Such a malfunction refers to the category of active (ACTIVE). If the error is not a fatal indicator, it is not lit, and the failure is assigned the status (Stored). In order for such a malfunction to become active, it should be repeated for several drive cycles (this is a process in which the cold engine starts and runs until the operating temperature is reached).
4. Diagnostic error codes (DTC - Diagnostic Trouble Code). The malfunction in the OBDII standard in accordance with the specification J2012 is described as follows:
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First character Indicates which part of the car a malfunction is detected. The selection of the symbol is determined by the diagnosed control unit. If the response from two blocks is received, the letter is used for a block with a higher priority.
P. - Engine and transmission
B. - Body
C. - chassis
U. - Network communications
The second character shows that I defined the code.
0 or P0. - Basic (open) malfunction code defined by the Association of Automotive Engineers.
1 or P1 - The fault code determined by the car manufacturer.
But not everything is so smooth in the Danish kingdom, as it seems at first glance. Remember, I promised to tell about one nuance. So almost all BC know P0 codes - basic, but your inner for each car is yours. For example, ACCENT has its own unique error codes for each model yearBut on Matrix - no, why it happened, for me a mystery.
The third symbol is a system in which a malfunction is detected. It carries the most useful information.
1 - Fuel and air system
2 - fuel system
3 - Ignition system
4 - Auxiliary emission limit system (exhaust recycling valve, air intake system in the exhaust engine manifold, catalytic converter or fuel tank ventilation system)
5 - Speed \u200b\u200bcontrol system or idle with appropriate auxiliary systems
6 - engine control module
7
8 - Transmission or leading bridge
Fourth and fifth characters This is an individual error code. Usually they correspond to the old OBDI codes.
5. Self-diagnostics of faults leading to increased emission toxicity. The software controlling the engine operation process is a set of OBDII compatible programs that are performed in the engine control unit and "observe" for everything that happens around. Engine control unit is a real computer. During the operation of which a huge amount of calculations are performed for multiple engine devices, based on the data obtained from all kinds of sensors. In addition to this, the controller must diagnose and control the components of the OBDII system, namely:
Check drive cycles that determine the generation of error codes
Runs and performs component monitors
Defines the priority of monitors
Updates monitor readiness status
Displays test results for monitors
Does not allow conflicts between monitors
The monitor is a test performed by the OBDII system in the engine control unit to assess the correctness of the functioning of the components responsible for the composition of the emissions. There are two types of monitors:
Continuous (executed while there are appropriate conditions)
Discrete (triggered once for the trip)
Another question remained, which should be considered separately - these are onboard computers (BC). Just do not confuse with a craft from the amigo or regular - they practically do not carry useful information. Why do you need real BC and what can they? There is a lot of people who just like to dig with their car, know what she "lives." Sometimes you can simply save money - for example, I detected myself which sensor was out of order, to buy yourself, change yourself. After all, the service center will definitely include diagnostics, and the sensor will sell with a unthinkable markup. For example, I often come to the service with a ready-made solution - I am wondering to solve the problem, but the nuts twist - no. I wonder what instant expense, how rides the network voltage from consumers, which parameters are issued by sensors, what errors in the work were fixed. This is a hobby. And I understand perfectly well why manufacturers not only do not put full-fledged BCs, but not certified from third-party manufacturers. We deprive the superiority of dealers. The formal pretext is an excess load on the engine control unit, they say it is forced to process more requests of the BC. The logic in such a statement is of course there, but allow, and the scanners of dealers do not load? Load, but they are certified. And they stand unthinkable money. A closed circle of some kind. In general, draw conclusions. I hope that with the help of this article you approached the understanding of your car.
Modern car represents a complex electron-mechanical complex. Determination of a faulty node or mechanism in such a complex without a special help diagnostic equipment requires large labor costs, and in many cases it is not possible at all.
Therefore, almost all produced vehicles Tools with interfaces for connecting to diagnostic devices. The most common elements of such interfaces include the OBD2 connector.
What is the diagnostic connector according to the standard OBD2
A bit of history
For the first time, manufacturers seriously thought about automating the car diagnostics in the 70s. It was then that appeared electronic blocks Engine control. They began to be equipped with self-diagnostic systems and diagnostic connectors. Close contact connector contacts, you can produce a malfunction of the engine control blocks using Blink Codes. As personal computer technicians are implemented, diagnostic devices have been developed to pair connectors with computers.
The emergence of new manufacturers on the market, expanding competition predetermined the need to unify diagnostic devices. The first manufacturer who seriously approached the solution of this task was General Motors, which introduced the universal information exchange protocol in 1980 by the ADL Assembly Line Diagnostic Link interface.
In 86th, the protocol has improved a little, increasing the volume and speed of information transfer. Already in 1991, a regulation was introduced in the US state of California, according to which all the cars sold here followed the OBD1 protocol. It was an abbreviation on-board diagnostic, that is, on-board diagnostics. It greatly simplified the lives of firms serving vehicles. This protocol has not yet regulated the view of the connector, its location, error protocols.
In 1996, the action of the updated OBD2 protocol has already spread all over America. Therefore, manufacturers wishing to master the American market were simply forced to comply with him.
Seeing the obvious advantage of the repair and maintenance of the car, the OBD2 standard was distributed to all vehicles with gasoline enginessold in Europe since 2000. In 2004, the obligatory standard of OBD2 is distributed to diesel cars. At the same time, it was supplemented by CONTROLLER AREA NETWORK standards for data exchange tires.
Interface
Incorrely assume that the interface and the OBD2 connector are the same. The concept of the interface includes:
- directly the connector itself, including all electrical connections;
- system of commands and protocols of information exchange between control blocks and software-diagnostic complexes;
- standards for performing and locating connectors.
Not necessarily the OBD2 connector must be performed in a 16-pin trapezoidal version. On many cargo and commercial cars, they have another design, but the main transmission tires are also unified.
IN passenger carsby the 2000 release, the manufacturer could independently determine the form of the OBD connector. For example, on some mazda cars The non-standardized connector was used until 2003 release.
The clear location of the connector is also not regulated. Standard Indicates: within the reach of the driver. More specifically: no further 1 meter from the steering wheel.
This often delivers difficulty for inexperienced auto electrodes. The most frequent location of the connector:
- near the left knee driver under dashboard;
- under the ashtray;
- under one of the plugs on the console or under the dashboard (in some VW models);
- under the lever of the handbrake (often in the early Opel);
- in the armrest (sometimes Reno).
The exact location of the diagnostic connector for its car can be found in reference books or simply "google".
In the practice of an autoelectrician, there are cases when the connector in the process of repairs after the accidents or the body modification or salon was simply cut off or moved to another place. In this case, its restoration is required, guided by the electrical circuit.
Pickup (Connection Scheme) OBD2 Connector
Connection diagram of the contents of the standard OBD2 16-pin connector used in most modern cars, shown in Figure:
Appointments:
- tire j1850;
- installed by the manufacturer;
- mass of cars;
- signal land;
- CAN-tire high level;
- K-Line tire;
- installed by the manufacturer;
- installed by the manufacturer;
- tire j1850;
- installed by the manufacturer;
- installed by the manufacturer;
- installed by the manufacturer;
- cAN J2284 tire;
- L-Line tire;
- plus with battery.
Basic in diagnosing is CAN and K-L-Line tires. In the process of conducting diagnostic work, they by exchanging information on the relevant protocols pollute the control units, receiving error information in the form of unified codes.
In some cases, the diagnostic device cannot contact the control blocks. This is most often associated with the CAN-tire malfunction: short circuit or cliff. Often the CAN bus closure faults in control blocks, such as ABS. This problem can be solved by disconnecting individual blocks.
If the bond on OBD diagnostics is lost, first check if the native radio is installed on the car. Sometimes an abnormal car machine ships a to-line bus.
For greater loyalty, it is necessary to turn off the radio.
To the outputs, the purpose of which determines the manufacturer, usually directly connected diagnostic signals of specific control units (ABS, pillows sRS security, body, etc.)
Connect through adapters
In the event that a non-standard connector is installed on the car (out of 2000 or cargo or commercial vehicles), you can use special adapters or make them yourself.
On the Internet, you can find a chart of recoming the connector conclusions like shown in Figure:
If the car is in permanent operation or for professional work as an auto electrician is easier to acquire an adapter (set of adapters).
For the Autocom diagnostic scanner, they look:
The minimum standard set for passenger cars includes eight adapters. One adapter connector is connected to the OBD car connector, the other to the OBD diagnostic cable or directly to the Bluetooth ELM 327 scanner.
Not in all cases, the use of adapters provides car diagnostics. Some cars do not ensure the interface according to the OBD protocol, despite the fact that they can be connected to the OBD connector. This more applies to the elderly car.
General car diagnostic algorithm
For diagnostics, you will need an auto attendant, information display device (laptop, smartphone) and the corresponding software.
Procedure for diagnostic work:
- OBD cable is connected to the diagnostic connector of the car and autoskneur. On the scanner, an alarm LED should turn around, indicating the voltage of +12 volts to the scanner. If the +12 volt output on the connector is not connected, the diagnosis is impossible. It should be sought for the cause of the absence of voltage to 16 output diagnostic connector. A potential cause of a fuse may be possible. Scanner (if this is not an independent device) connects to a laptop. Computer loads software for diagnostic work.
- In the interface program, a car brand, engine, year of release is selected.
- Ignition turns on, the end of self-diagnostic works of the car is expected (while the light bulbs are blinking on the dashboard).
- Study of static error scanning is launched. During the diagnosis, the scanner will be focused on the LED blinking process of diagnostics. If this does not happen, most likely the diagnosis will be unsuccessful.
- Upon completion of the scan, the program issues error codes. In many programs, they are accompanied by a Russified decoding, sometimes you should not fully trust.
- You should record all error codes before removing them. They can be removed, after a while appear again. So often happens in the ABS system.
- Delete (more precisely to lose) errors. Such an option is in all scanners. After this operation, inactive errors are deleted.
- Turn off the ignition. After a couple of minutes, turn on the ignition. Make a start of the engine, give to work five minutes, it is better to make a checkline for five hundred meters with a mandatory product of turns to the right and left and braking, movement reverse, incorporating light signals and other options for maximum survey of all systems.
- Repeat scanning. Compare again "stuffed" errors with previous ones. The remaining errors will be active, they must be eliminated.
- Strust cars.
- Repeated error decryption using special programs or Internet.
- Enable ignition, start the engine, perform dynamic engine diagnostics. Most scanners allow in a dynamic mode (on a started engine, changing the position of the accelerator pedals, brakes, other controls) measure the injection parameters, ignition angle and others. This information is more fully describing the operation of the car. To decrypt the obtained diagrams, auto-electroitel and motor skills are required.
The video is the process of checking the car through the Diagnostic connector of PBD 2 with Launch X431:
How to decrypt error codes
Most OBD error codes are unified, that is, a specific error code corresponds to the same decoding.
The overall structure of the error code is:
In some cars, the error entry has a specific appearance. Reliable download error codes on the Internet. But to do this for all errors in most cases will be superfluous. You can use Special Programs like Autodata 4.45 or similar. In addition to decryption, they are indicated possible reasonsTrue, concise, and in English.
It is easier to enter in the search engine more reliable and more informative in the search engine, for example, "Error P1504 Opel Verctra 1998 1.9 B", that is, to specify abbreviated all information about the car and error code. The search result will be fragmentary information on various forums, other sites. Do not immediately follow all the recommendations. But, like the opinion of the hall on the well-known program, many of them will be plausible. In addition, you can get video and graphical information, sometimes extremely useful.
The idea is not new, but many questions. On the one hand, you can remove almost any data, and on the other hand, OBDII looks like a patchwork, because The total number of physical interfaces and protocols scares any. But explains all the fact that by the time of the appearance of the first versions of the OBD specifications, most of the automakers have already managed to develop something. The emergence of the standard though a certain order, but demanded inclusion in the specification of all interfaces and protocols, which at that time existed, well, or almost all.
In OBDII, the J1962M connector is present three standard interfaces: MS_CAN, K / L-Line, 1850, the same plus battery and two lands (signal and simply weight). This is the standard, the remaining 7 of the 16 conclusions - OEM, that is, each manufacturer, these conclusions use how it is pleased. But the standardized conclusions often have extended, advanced features. For example, MS_CAN may be HS_CAN, HS_CAN can be on other Pins (non-called standard) Along with the standard MS_CAN., PIN №1 may be: Ford - SW_CAN, WAGN - IGN_ON, KIA - Check_engene. Etc. All interfaces were also not stationary in their development: the same K -Line interface was initially unidirectional, now it is bidirectional., Bodreit CAN interface also grows. In general, the overwhelming majority of European cars of the 90s and the beginning of zero, it was quite possible to properly having only K -Line, and most American - only SAE1850. Currently, the overall vector of development is an increasing application of CAN, an increase in the speed of exchange., We are increasingly visible and single-wire SW_CAN.
It is believed that the English-speaking programmer sitting on the profile (English-speaking) forums, smoking in the texts of the standards, maybe for the "maximum of 4-5 months" to build a universal engine, which will cope with all this variety. In practice, it is not. Anyway, the need arises to flary each new car., Sometimes even one and the same car, but in different equipment. And it turns out that they declare 800-900 types of car supported, and in practice 10-20 actually tested. And this is a system, - in the Russian Federation the author is known, at least 3 teams of developers who have departed through this thorny path and all with the same planning result: you need to cry / customize each model of the car, and there are no resources / means. And the reason for this is what: standard standard, and each manufacturer when forced, and when and deliberately contributes to its implementation, something is not described in its implementation. In addition, not all default data is present on the connector. There is data, the appearance of which you want to initiate (give this or another car unit to the command to transfer the necessary data).
And here the OBDII tire interpreters come to the scene. This is a microcontroller, with a set of interfaces that meet the J1962M standard that translates the entire variety of data on different interfaces of diagnostic connectors in a language, more user-friendly for applications, for example for diagnostic applications. In other words, all the diversity of protocols is now decrypted by the application, it does not matter what is working on a computer with Windows or on a tablet / smartphone. The first mass interpreter of OBDII with an open protocol was ELM327. This is the 8-bit Microchip PIC18F2580 microcontroller. Let the reader do not surprise the fact that this microcontroller is a massive instrument. The firmware is just the proper reader and the real cost of "PIC18F2580 + Firmware" is an impressive $ 19-24. That is, the scanner made on the "honest" chip ELM327 cannot cost less than 50 evergreen presidents. Where on the market is such a variety of scanners / adapters with prices "from 1000 rubles", you ask? And this is our Chinese friends tried! How they cloned this chip, poisoned the crystal layerly or led the dally and night - leave behind the scenes. But the fact remains: clones appeared on the market (for reference: 8-bit Microchip controller in wholesale purchases now cost less than the dollar). Another thing is how correctly these clones work. There is an opinion that "until the people buy cheap adapters, there will be no auto electricians without work." That is, it buys a person's adapter with the thought of "something there is there or set up"., And the result gets different, well, that is, not the one that was counting on. Well, for example, suddenly begins to blink multimedia-system with all its lights, or an error pops up, or in general the box in the emergency mode goes. And well, if without serious consequences - in most cases a specialist with professional equipment will cure an iron horse. But it happens otherwise. Here several factors can be mixed here: the wrong adapter (clone), the wrong software, the wrong bunch of the adapter + software, and the "curves" of the hands also play their role. I note that the adapter on an honest chip from the manufacturer with the correct software to the deplorable results will not lead, at least the author about such cases is not known.
And what can be done with such an adapter? Well, probably, the most common case, put in the glove box "just in case." View and reset the error, since the one will appear. Odometer reset before selling a car, or vice versa, "wind" if you are a hired driver. Enable any option in the car that is turned off by default, and official dealer This service is paid. Updating firmware and reconfiguring electronic blocks, still leave specialists, but most adapters allow it. Someone will like to just have more information about the parameters of the engine and other systems in the form of beautiful graphics on the tablet or smartphone. Often found on the road, for some reason, taxi drivers, who have an android tablet in front of the dashboard and completely overlaps it, so: this tablet is most likely connected to such a bluetooth or Wi-Fi adapter. There are still a number of applications, this is the use of such an adapter with a telematic device (tracker) or alarm. Connecting to a diagnostic connector through such an adapter allows small blood to remove the data required for monitoring. In most cases, this method costs the developer is cheaper, and the installation itself is easier, because the need disappears different sensors, Everything (well, or almost everything) can be removed from OBDII.
Another thing is that the possibilities of chip are currently insufficient and for use in modern cars. Somewhere in the middle of zero years, the CAN bus exchange rate went upwards, SW_CAN appeared. But the most important thing is: the length (number of characters) has increased in code words. And if you can hardly, via a relay or a banal toggle switch, stick to ELM327 crutches, which will allow you to work with MS and with HS and with SW releases CAN, then on the long code of computing power Pic18F2580 with its 4 MIPS is clearly not enough. By the way, the latest version of ELM327 (V1.4) dates back to 2009. And it is possible to use this chip without "crutches" only for car release to the middle of zero. So what to do. The output, oddly enough, and not one.
CAN-LOG, also an interpreter, but not a complete set of OBDII interfaces, and two CAN tires. It turns out that this is enough for in most cases to remove all the necessary information. True, far from all cars both CAN tires Disabled to the diagnostic connector. So you have to connect under the instrument panel. And this is not always acceptable for reasons of preserving the guarantee, the truth is the option of the wireless meal of information from the tire, but it is even more expensive, and the accuracy of the data captured is not 100%. You can use as a finished device by connecting it through earther or RS232, and just a chip, integrating it on a device fee with a small amount of discrete components. The cost of the device is certainly higher than the cost of authentic ELM327, but this is compensated by a huge list of supported cars and functions. And the list of supported cars included not only carsBut also trucks, construction, road and agricultural machinery. CAN-LOG works somewhat different than ELM327 and its clones. When connected to the car busbars, you must select and install the program number corresponding to the car. And it is convenient, because The developer does not need to delve into all the variety of protocols. (In ELM327, the selection of the car and the fine tuning of the chip is given to the deposit application).
There are other solutions that allow you to easily and gracefully take data from diagnostic connector. Well, the question of whether to tame a regular diagnostic connector, and how, each developer will solve himself. For the car park of one brand, you can try to write your software, unless of course the manufacturer does not close the protocols. And if the telematics device is installed on different models, it is more wise to use any of the OBDII interpreters.
