Just a few years ago, electronics in a car were a real luxury item, available only in the most expensive models.
But time flies, technologies change. Now even the simplest, most affordable cars have in their arsenal an impressive number of electronic devices that ensure the operation of literally every system, monitoring the condition of the car and its individual components.
From this point of view, VAZ models are not distinguished by sophistication and a wide range of electronics. That’s why many people decide to install their own on-board computer.
Why is it needed?
By installing an on-board computer, you can get a device that informs you about the operation of all systems, and with enviable accuracy. The computer reads parameters, reports potential malfunctions, and allows you to prevent breakdowns before they lead to serious repairs.
New device
It is incredibly difficult to overestimate the benefits of an on-board vehicle, which is why many decide to install it on their VAZ 2114. This way, car owners, without the help of expensive equipment at a service station, will be able to independently monitor the condition of the car and promptly respond to messages from the computer, which carries out regular diagnostics.
Device installation
The domestic model VAZ 2114 is equipped with a place for mounting the BC. It is closed with a control plug, which must be carefully removed. The installation work is facilitated by the presence of a special set of wires with a nine-pin connector. It must be connected to the corresponding input of the device. The main interaction between the device and the machine is activated by connecting the brown wire to the “M” (Euro 2) or “7” (Euro 3) socket. The opposite end of the wire is inserted into the input socket of the device. The operation of the computer is tested, if everything is normal, the installation can be considered complete.
If it is necessary to dismantle the BC, the following manipulations are performed:
- The system is de-energized by removing the terminal from the battery;
- The radio control panel is dismantled, along with it;
- Through the resulting window, the BC fastenings are disconnected;
- The device is removed after first disconnecting all connected devices;
- The radio and panel are mounted in place.
What to choose?
The range of on-board computers for the VAZ 2114 is quite extensive. But you shouldn’t take the first one you come across.
First, make sure that the computer you choose supports programs designed for the electronic control unit of the “fourteenth” model.
Model Gamma GF 415T
We do not recommend purchasing cheap models under any circumstances. Once you decide to install a sideboard, make sure that there is no doubt about its quality and reliability. You'll have to pay a pretty penny for it, but believe me, it's worth it.
Broken wire to the line on a VAZ 2114. Do-it-yourself diagnostics using the K-line, part 1
The control unit is a microprocessor device and can transmit information about its operation via a serial communication channel.
The standard for such a channel in automotive electronics is the K-line. The diagnostic line is a means of transmitting information between the electronic unit and external devices: immobilizer, testing equipment, diagnostic devices. Communication with the immobilizer is established after turning on the ignition switch. The control unit and the immobilizer exchange via the K-line the parameters specified during training of the immobilizer. If the parameters meet the specified conditions, the electronic unit proceeds to the normal operation of the control algorithm. Failures and malfunctions in the communication lines with the immobilizer, mismatch of training parameters transfer the control program of the unit to a mode in which engine operation is impossible. The K-line in the car is connected to a diagnostic connector, to which a tester can be connected to diagnose the operation of the control system. The standard software protocol for data exchange between devices and the electronic unit, implemented in these devices, makes the operation of all devices connected to the K-line transparent. Lack of communication between the control unit and the diagnostic tool may indicate a malfunction of both devices. If there is no such connection, and confidence in the performance of the tester is beyond doubt, then the first step is to check the diagnostic circuit. First you need to make sure that there is power to the on-board network at the control unit and the K-line circuit from the control unit reaches the diagnostic connector. The voltage at the K-line terminal of the diagnostic connector, with a working circuit, is equal to the on-board network voltage. Since the K-line circuit is connected to the diagnostic connector through the immobilizer connector, checking the circuit should be carried out taking into account the serviceability of the immobilizer. If the immobilizer is not functionally involved in the system, it is best to connect the wires (K-line input and output) directly from the immobilizer connector. During the preparation of production, it was assumed that immobilizers would be installed on some cars with a control system based on blocks from Bosch. But mass production of immobilizers was not prepared in the required time frame. In this case, if the wiring harness provides for the installation of an immobilizer, the connection between the diagnostic output of the control unit and the diagnostic block is broken. To correct this situation, it is necessary to install a jumper between pins 9 and 18 of the immobilizer connector. On vehicles where the wiring harness does not provide for the installation of an immobilizer, this problem does not exist. Good day to everyone who is reading this entry! And so I’ll start with the fact that I don’t have an on-board computer, I have a desire to install it, but more on that later. There was an interest in identifying my car with my own hands. In one of the previous articles, I wrote that after a rainstorm I filled up the air flow sensor, the check light came on and I went for diagnostics: they charged me 100 UAH. Within 30 seconds, having discovered that the sensor does not work, it needs to be replaced. I don’t need professional diagnostics; if necessary, I’ll go to a diagnostician, and for easy diagnostics, I decided to buy a K-line scanner
VAG-Com 409.1 K – Line scanner
oh, and even though my car is from 2004, it is 1.5l and 8kl with EURO-2, and is equipped with an ODB-1 connector. I googled it: it turns out that ODB-2 was already installed but on 16kL cars with EURO-3 from earlier years. I also had to buy an adapter with
Adapter OBD-II 16pin to GM12
I ordered everything from the online store, along with the cords I received a disk with programs for diagnostics and a bunch of different information on diagnostics. I configured all the com ports on the laptop and went into the garage with the laptop to try. I plugged it in, turned on the ignition, bam, and the fuel pump immediately began to hum without stopping. Naturally, nothing happened and I abandoned the matter (and this was last year at the end of autumn). Well, it’s already warm - there is a desire to resume this business. When I rang the adapter, I didn’t really understand anything, one rings 3 at a time, some don’t ring at all, I decided to redo it all. As you know, for diagnostics via the K-line you only need 3 wires (channels): 1) potassium itself 2) +12V 3) -12V aka ground, ground
K-line connection
I would like to note that in the figure above the contacts on the adapter are drawn as they should be, and not on the adapter or block! So imagine applying the adapter and think about where the contacts on the adapter and block should be, here is the picture below
location of K-line contacts on the blocks
Lamaaat adapter! Well, what can you do, the design is not collapsible (breaking the connector turned out to be not an easy task))) the black body is very hard, everything inside is still filled with white plastic. 4 wires are soldered, everything is called where which goes to the adapter where is the K-line, +12 and ground, the fourth, judging by the continuity, is the L-line, which we do not need. I’ll connect these 3 wires directly to the diagnostic block and try to connect to the ECU again! Good luck for me! Read the continuation!
| Do not forget to disconnect the battery before performing any manipulations. Next, you need to get the trip computer itself (MK or BC). It is obtained in the same way as a watch, by prying it off with a screwdriver. The BC is held on by four plastic latching brackets, two at the bottom and two at the top. Next, you need to familiarize yourself with the bookmaker itself, with the inscriptions on the back side. Why this is necessary, I explain, initially the BC of the Kursk Schetmash (passport) (I can lie further, but as far as I understood everything exactly like this) was obliged to contact the K-line, but VAZ changed the technical specifications, and the firmware was cut off, i.e. the part responsible for communication with the ECU was simply cut out. |
|
| If there is a track, and when you press the 'clock' button in clock mode, nothing happens, then you have a full-fledged BC with defective firmware that needs to be updated (file 527-10.hex and instructions for the firmware are in the archive). You can update the firmware using standard means (by unsoldering the processor, it is there, by the way, PIC18F252, and flashing the firmware in the header, or by soldering the wires directly to the legs, I did this), or through the K-line from the PC. There is information that this did not work with all K-line adapters, plus for this you need to have Win 95-98, some did it on XP, but most had problems with XP. In order not to install Win 95-98 solely because of the BC firmware, you can use a virtual machine (thanks to Ivan Kuchinsky for the successful experiment). |
The K-line is connected to the BC block simply; fairly common contacts are used there. We prepare a contact with a wire, insert it into the BC connection block, and connect it to pin 7 of the OBD-II block. Next, select your controller in the settings, as described in paragraph 3.8.3 of the BC instructions:
- ECU.0 - M1.5.4
- ECU.1 - M1.5.4N or January-5.1
- ECU.2 - MP7.0
- ECU.3 - MIKAS 5.4, MIKAS 7.1, 301.3763 000-01
- ECU.4 - Bosch 7.97
Communication with the controller only when the ignition is on. Information does not appear immediately! We wait patiently from a few seconds to minutes.
By the way, it doesn’t work fully with Bosch 7.9.7, but there is an option to look at errors and reset it.
What I mean is that it is not indicated in the instructions at all. And yet, don’t be afraid to kill him! You will always have the opportunity to buy the same PIC18F252 processor and flash it (ask anyone who is interested in or works with microelectronics) separately, or solder it and flash it. But this does not at all negate the accuracy and thoughtfulness of actions! If you have any questions, I am ready to provide clarification. Instructions on how to check the VAZ K-line
10/11/2014 02:52
Most often, the solution to the problem really lies in breaking the K-line wire. That is, the wire has simply moved slightly out of the block (the APS block of the immobilizer, or the BC block) and there is no longer any contact.
If you have checked all the contacts, but the on-board computer still does not see the K-line wire, then you can proceed as follows:
1) Check the voltage on the K-line. We set the multimeter to the mode for measuring constant voltage, connect the red probe to the K-line, and the black probe to ground to any point on the body. The readings on the device should be 12+-2V. You cannot use a lamp to check the voltage, because it has a load.
2) If on your VAZ the connector with the APS is disconnected, then check for the presence of a jumper in the APS block between pins 9 and 18.
3) The problem may be in the immobilizer (the K-line signal comes, but disappears after the immobilizer). Check for the presence of a K-line on pin 18 of the APS block. Using the same method, you can check whether there is a break between the APS block and the BC block.
4) Interference or broken wire. Try replacing the wire from the BC to the diagnostic connector with a new, shorter one.
You can also check the k-line at a service center using computer diagnostics, or by connecting a known working on-board computer to the car. And if the k-line does not work and at the same time there are problems with starting the engine, then start checking the additional VAZ fuses.
Thematic materials:
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BC errors
If you buy a car that already has an onboard vehicle installed, this is quite good. You don't have to install it yourself.
Plus, it's a great way to check whether the car is as good as the owner claims.
To check the BC for errors, reset the daily mileage on the dashboard and at the same time turn on the ignition. Then press the button located near the windshield wiper lever. The display will show the firmware version of the installed BC, plus error codes, if any.
The main bookmaker errors are shown in the table. Moreover, the most popular of them, which are found on the VAZ 2114, are 4, 6 and 8.
| Code | What does it mean |
| 2 | The car's mains voltage is too high |
| 3 | Fuel level sensor is faulty |
| 4 | The coolant temperature sensor has failed |
| 5 | The outside temperature sensor is faulty |
| 6 | The engine gets very hot |
| 7 | Oil pressure has reached a critically low level |
| 8 | There are problems with the braking system |
| 9 | The battery is low |
Once errors are detected, appropriate decisions can be made. If we are talking about your car, simply reset the data by pressing and holding the daily mileage button. Without doing this, the errors will persist during the next diagnosis, although you have taken measures to eliminate them by repairing the corresponding components of the car.
Features of using the USB K-Line adapter:
- operates in a wide range of device supply voltages from 8.0 to 18 V;
- recommended temperature for use of the device is from -40 to 40 ° C;
- providing communication with a direct one-wire interface directly to a standard connector;
- connecting diagnostic testers;
- simple communication with the vehicle's ECU;
- protection against short circuit to ground;
- low current consumption during operation.
Although the K-Line diagnostic protocol is still widely used today, it no longer plays a significant role in new developments of automotive systems for solving diagnostic tasks performed via K-Line. However, car manufacturers around the world have not ruled out the fact that many vehicle ECUs still use K-Line technology, ensuring the use of this technology for some time to come. ECUs with K-Line interface are still used in passenger cars.
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What parameters does the BC screen display?
By connecting the onboard vehicle, you will be able to access a large amount of information and data about the operation of your car.
Article on the topic: Replacing the front and rear wheel bearings of a VAZ 2110
Parameter displays
Most computers suitable for the VAZ 2114 display the following data:
- Vehicle speed;
- The volume of fuel remaining in the tank;
- Travel time;
- Engine speed;
- Fuel consumption indicators;
- Engine heating degree;
- Temperature inside the cabin;
- The distance that the car can travel on the remaining fuel;
- Distance traveled by the car;
- Voltage in the on-board electrical network;
- The amount of heating of the coolant;
- Throttle position;
- Total air flow;
- Error codes and their designation in understandable language;
- Average car fuel consumption;
- The amount of fuel consumed for the current trip;
- Distance traveled during the trip in kilometers;
- Average speed;
- Other useful information.
PURPOSE OF THE ON-BOARD COMPUTER
An on-board computer on a car is an electronic computer device designed to monitor the status of various components of the car and transmit information to the car owner. Depending on the technical equipment, on-board computers (BCs) can vary in complexity, and accordingly, the price of the device can vary significantly.
The VAZ 2114 car is equipped with BC 2114-3857010 as standard from the factory. The device is mounted on the panel to the right of the instrument cluster at the same level with it. On those VAZ models that are not equipped with such a device, there is a plug in the standard place on the instrument panel and there must be a 9-pin connector for connecting the device.
In the “native” BC 2114, you can view the following parameters on the display:
- Current time and date;
- Travel time excluding stops;
- Travel time, including stops;
- Gasoline consumption at the current time;
- Average and total gasoline consumption per trip;
- Mileage on the remaining gasoline in the tank;
- Signal when there is a minimum amount of fuel left in the gas tank;
- Total level of remaining fuel;
- Travel distance;
- Average speed during the trip;
- Vehicle network voltage;
- Signal when the mains voltage is below the permissible level.
The “Lux” package is equipped with an AMK-211501 on-board (or route) computer, which has added firmware that allows you to diagnose the electronic engine control system (ECM). But many owners of VAZ models 2113, 2114, 2115 are not satisfied with the standard equipment with its limited functionality, and they strive to install a more advanced BC with a larger set of controlled parameters. They can be understood - now there are many different models from different manufacturers.
The smallest BC State X-1M is made in the form of buttons.
BC State X-1M
It is mounted above the standard location of the trip computer instead of push-button plugs. Among the interesting additional functions of the device are:
- “Plasmer” – warming up the spark plugs before starting the engine;
- “Tropic” – the ability to change the temperature at which the fan turns on and thereby prevent engine overheating in hot weather.
In total, the device has 30 functions, and the BC costs about 1000 rubles. More expensive trip computers are installed in a standard place and are more functional. On the display of the Orion BK-46 model you can see up to 7 controlled parameters simultaneously, and when the battery is disconnected, all data is saved in memory in the device. The issue price is about 2500-2800 rubles.
One of the most advanced BC models for the VAZ 2114 is the “Gamma GF 415T”. Here you can see interesting features such as:
- Displaying three multi-displays on the screen at once;
- Non-volatile quartz watches;
- Informing about the need to change oils, filters, spark plugs, etc.
There are a lot of controlled parameters, the cost of a bookmaker is in the range of 4000-4600 rubles. Many systems are equipped with audible alerts, and these computers are very easy to use.
How does a bookmaker differ from a control panel?
Many car owners are sure that there is no need for an on-board computer; all data is displayed on the dashboard, and that’s enough.
But let's take the speedometer as an example. As you know, it reads the engine speed, converting from to speed. But if you install wheels of larger diameter, the speed will increase, but the dashboard will work according to the old scheme, that is, you will exceed the speed limit, although everything on the speedometer is “within the limits of the law.”
Universal model
Simple clamps do not cope with their tasks as well as BC is capable of it. In theory, it is possible to calculate only from the dashboard the amount of fuel used, current and average fuel consumption, the number of kilometers traveled, and so on. But why sit behind the wheel and calculate something, be distracted, if you can just get an on-board vehicle and look at its screen, receiving the necessary information based on changing parameters.
So there is a significant difference between the BC and the dashboard.
WHAT TO DO WHEN A BC STOPS WORKING
This sometimes happens when the on-board computer does not work. What do experts advise to do in this case? The first step is to determine the type of malfunction of the device. If it does not show “signs of life” at all, you need to check fuse F3, which is installed in the power supply circuit of the VAZ 2114 processor. If replacing it does not “revive” its operation, check the connection connectors.
There is no point in describing the essence of the process of repairing such a complex electronic product, since for this, in addition to having the necessary devices and tools, you also need to have an education in the field of electronics.
Preliminary preparation
Preparing for installation
There are several activities that you should think about and implement before you begin installing the BC.
- Determine the set of functions that you want from your bookmaker. For this purpose, standard instructions are attached to each device. Plus a lot of information can be found on the Internet.
- It makes no sense to buy a highly sophisticated system for the VAZ 2114. But budget bookmaker models are not the best solution.
- The optimal package includes a monitor, a set of wires and a processor.
- Decide where the BC will be installed. The center console is best suited for this. But there must be adequate free space for it.
- If the center console doesn't fit, try the dash. Although in this case you will need an external housing.
Remember right away that after installing the on-board computer, you will also have to install the software and make the appropriate settings. Therefore, do not think that by connecting all the wires, the work can be considered completed and the BC will miraculously begin to give you objective and adequate information.
Brief instructions for use
The on-board computer in question is a structurally complex electronic design capable of performing about 500 options. The STATE variation is interfaced with the VAZ 2114 ECU, which ensures normal operation of the device. To use the computer correctly, you should study the purpose and functionality of the BC control buttons located on the dashboard.
It is not necessary to keep in mind the decoding of all the codes; you just need to print them out and take them with you. Important notices:
- 2
– excessive voltage in the on-board network; - 3
– problems with the fuel indicator; - 4
– signals a violation of the temperature regime of the power unit; - 6
– indicates engine overheating; - 7
– critical decrease in pressure in the lubrication system; - 8
– violations in the brake unit; - 9
– battery discharge.
It happens that the BC issues codes incorrectly due to the failure of a sensor. However, you should not ignore checking the car, since, most often, the activation of errors indicates a malfunction. After fixing the problem, you should reset the processor. This procedure is performed by turning on and holding the daily mileage button.
Installation
Installation process
To connect an on-board vehicle to your VAZ 2114, you don’t have to be a great specialist. By following the instructions, you can do all the work yourself. Just devote enough time and effort to this issue.
- First, remove the plug located on the dashboard. We will start from the fact that you have found a place for your on-board computer.
- After removing the plug, look for a bunch of wires that have a nine-pin connector. All VAZ models have it, so your “fourteenth” will not be an exception.
- Now connect this connector to your on-board computer.
- One of the most important activities is conducting a K-line.
- To do this, take a wire about 1 m long and connect it to the second pin of the nine-pin connector.
- The second end of the wire is connected to the diagnostic block. It is located directly under the dashboard. To make the task easier for yourself, we advise you to disconnect the panel on the right side.
- If you have a Euro 2 block, the wire is connected to the diagnostic block using an M-socket.
- If the pad is Euro 3, then you will need socket number 7.
- In some cases, on a VAZ 2114, the Euro 3 block is mounted upside down. Therefore, be sure to pay attention to this when connecting, so as not to confuse anything.
- After connecting the on-board computer, place it in the designated place and check its operation.
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Tips and tricks
As you can see, the on-board computer of the VAZ 2115 or VAZ 2114 is connected in the same way as many other devices in the car (for example, a car radio). At the same time, the advantage is that a suitable VAZ 2114 BC or an on-board computer on a VAZ 2115 can be installed in an existing standard place in the car. This means that you can avoid the need to install the device with a separate remote housing.
We also recommend reading the article about what a central lock in a car is, what types of central locks there are, etc. From this article you will learn about the features of central locking on a car, what you need to consider when choosing and installing a central lock.
Connecting a VAZ on-board computer is usually not difficult, but before starting installation you should separately study the manufacturer’s instructions. Following the recommendations will help you avoid common mistakes.
By the way, if difficulties arise and it is not possible to install an on-board vehicle on a VAZ for one reason or another, a solution can be found on specialized forums or contact an experienced specialist. However, as practice shows, all operations are often standard, that is, special skills and knowledge are not required. The main thing is to carefully study the instructions.
