We disable the immobilizer on the VAZ-2110 with our own hands (without firmware)

Publication date: March 11, 2016. Category: Automotive equipment.

Almost all new cars are equipped with immobilizers. These electronic devices make it possible to prevent the theft of a vehicle by disabling the “vital” systems of the car. As soon as the attacker gets into the car, he will try to start the engine and drive away. The immobilizer will either not allow this to be done at all, or the thief will be able to drive away several hundred meters, after which the fuel supply will stop and the engine will stall.

Such immobilizers can be contact or non-contact. The former have already ceased to be produced, while the latter are very popular among car owners. However, sometimes situations arise when a car enthusiast wonders how to disable the immobilizer on a VAZ 2112 or another brand. The fact is that in the brainchild of the domestic automobile industry, problems related to electronics and various devices often occur. Let's look at the main reasons for disabling the immobilizer.

Why do you have to disable the immobilizer?

VAZ began to equip immo only with injection-type cars. The first anti-theft devices of this series appeared on the VAZ 2110 and they were called APS-4. Today, more modern APS-6 models are more common. Now all cars of the 2110 to 2115 series are equipped with this particular device.

The most common problem with this device is the loss of the key or if the car owner, without knowing it, erased its code. Speaking specifically about VAZ standard immos, you can more often encounter a problem related to the fact that the lights in the cabin do not go out and, as a result, the alarm does not go off. In addition, malfunctions of the immobilizer software often occur, as a result of which its central unit does not read information about the key or considers it “not native”. As a result, when you stop to refuel, you risk being left in a stalled car.

To reprogram (marry, bypass, flash, upgrade, adapt) a device, you must first turn it off. In addition, immobilizers are usually disabled when installing a car alarm.

Warning: you will have to register the keys!

Read and analyze what is given below:

1. You can activate the Valet mode on the APS-4 immobilizer only with a “red” training key;
2. You can also disable Valet mode using a training key, and not some other one;
3. The main thing is that the “disabling” procedure will be combined with “registering user keys”;
4. If, when disabling Valet mode, you do not register user keys, then the immobilizer will not recognize them!

Usually it all ends with the service mode being successfully disabled, but they forget to register the keys. And then all that remains is to use one key - the training one. What is wrong.

Note: you can disable the standard alarm system, that is, disarm the immobilizer only with a “black” key. Complete the recording procedure and continue using the keys.

Answer the question whether the immobilizer is actually turned on:

1. You need to turn off the ignition;
2. The alarm system, that is, the APS unit, must receive information about closed doors;
3. The interior lighting will go out;
4. The immobilizer LED will flash at a frequency of 0.4 Hz, but if the system is not yet activated, the pulse duration will be half a second.

If activation has been completed, short pulses can be observed - their duration is 0.1 seconds.

If the standard system is not active, it does not interfere with the operation of the auto-start alarm. And then setting the service mode does not make sense.

In some cars of the VAZ-2110 family, the factory decided to install an imported controller - “MP-7 Bosch”. In this case, the control sequence will differ from the “standard” one. The differences are indicated in the text, and they come down to one or two steps. Be patient.

Bypassing the immobilizer when connecting an alarm system

Before you disable the immobilizer on the VAZ 2110, you should study all the methods for such a restart, and the first thing you should start with is this useful option from VAZ. Since it is in these cars that immobilizers most often fail, manufacturers have come up with a simple solution to this problem. Thanks to special software, you can perform an alternative start of the device and make one trip in emergency mode. However, to do this you will first need to enter a six-digit password. It is activated by pressing the gas pedal. This means that if the “reboot” code is “999999” then you need to press the gas the corresponding number of times, at the same interval. This procedure does not cause positive emotions, but in a hopeless situation or when installing an alarm system, this may be the only way to outwit the immobilizer.

Another method is the bypass module (immo crawler). A small electronic device is equipped with transmitting and receiving antennas located inside and outside. The device key or chip is also located inside the case. As soon as you start the car with the alarm, the internal antenna reads the code and transmits it to the ignition switch.

Important! If the car is started with the key, such a crawler will not work.

If one of the keys is lost, the remaining spare can be disassembled and the chip removed from it and secured to the ignition switch. After this, you can use any ignition key and the immo will be disabled.

This concerns generally accepted tricks that will help in solving such issues as disabling the immobilizer on a VAZ 2114. If you want to manually disable the immo, then you must adhere to the following recommendations.

Transferring the antenna to the lock

The standard reader installed on the console of the Lada 2110 can be easily transferred to the ignition switch. The diode is not changed, but the antenna has to be redone:

A homemade coil should contain 110-120 turns. It is secured under the lock cover and connected instead of the standard antenna.

The homemade device may not work right away. Unwind turns of 10-20 units and look for their optimal number. A homemade antenna, unlike a “factory” one, will be fully compatible with those antennas that are supplied with the lineman. This means that connecting the car alarm will look simpler - you won’t have to break the standard wiring.

Rules for disabling the immobilizer

Before disabling the immobilizer, you must disconnect the connector from the protection, that is, give the system a signal that the immobilizer is missing. After this, you can erase the data on the device and replace it with new ones. But in practice everything is not so simple.

If you turn off the device incorrectly, the system may perceive this as unauthorized access and the car will be completely blocked. In this situation, it will be difficult to do anything, all that remains is to call a tow truck. Therefore, be extremely careful. There are two schemes for disabling the immobilizer.

To do this, find the immobilizer control unit. Most often it is located behind the center console, next to the radio. After this, you need to find the connector on the block and remove it. In this connector you will find 20 contacts, first find the ninth and then the eighteenth. These two wires need to be cut, connected and insulated.

After this, all that remains is to remove the immobilizer and restore the line used for diagnostics (K-line). To do this, install a jumper that will restore communication between the ECU and the diagnostic block. We cut the wires and connect them, after which the connector is placed in its rightful place.

1. Reflash it yourself.

For this you will need:

• PC or tablet;
• soldering iron;
• PAK-loader programmer.

Next, you need to disassemble the ECU, find the controller connector and connect the PAK loader to it. We read the factory firmware with the BIN extension. It is also necessary to read information through the EEPROM connector. After this, you need to save the factory firmware on the computer and upload a clean EEPROM to the ECU. After this, you can disconnect the bootloader, assemble the controller and install it in place.

A soldering iron will be required if the auto ROM unit will be sealed. Or you can use the COMBISET program with the EEPROM cleaning function, then you won’t have to unsolder anything.

If we are talking about a specific APS-6 immobilizer, then it will be useful to know the purpose of the immo outputs.

• The green wire belongs to the antenna coil in the ignition switch.
• Blue is responsible for the additional power relay (for power windows).
• Green-white comes from the headlight switch.
• Orange and white refers to the rear fog lights.
• Pink is a constant plus from the battery.
• The yellow wire connects to ground when the rear fog lights are turned on.
• Yellow-black refers to K-line, if it is CL 7, then we have a wire from the diagnostic block, and if CL 8, then from the EUR control unit.
• The white one goes to the antenna coil located in the ignition switch.
• The green-black one comes from the driver's side door VC.
• Brown – from VK dimensions.
• Black – mass.
• Orange refers to terminal 15 of the ignition switch.

Kinds

Today, cars are equipped with either contact or contactless immobilizers, with the latter being more in demand among consumers. Contact systems are controlled using a key, while contactless systems use a remote control or card. If you don’t know how to connect the alarm to the central locking, then this is quite possible. Installing an alarm system on a VAZ 2110 with your own hands is quite possible with a further combination of the alarm system and immo (the author of the video is the IZO channel))) LENTA).

As for the “dozens,” this type of alarm is found only on injection versions. To control the device there is a set of keys. Red represents the master key, which is used to activate the protection.

The black key is used by the owner of the car. The procedure for “learning” or activating the system is usually carried out in the showroom, before the car goes on sale. Although, in principle, connecting the alarm to the central locking of a VAZ with further activation can be done at home.

The first “tens” were equipped with APS-4 systems, but after some time the cars began to be equipped with more modernized versions of APS-6. As for installation, the immobilizer is located either in the steering column, or behind the dashboard, or behind the radio, and the code is in the ignition switch. The APS-6 system does not connect to the VAZ hazard alarm, but can be used to control power windows (if they are electric), as well as fog lights.

It should be noted that some APS-6 are equipped with a body from the fourth models, this is probably due to the oversupply of APS-4 production. In this case, the number 4 will be marked on the case, and the diagram itself should have the inscription APS-6.

In what cases is it necessary to disable the immobilizer?

There are a number of cases when there is a need to turn off this device:

1. If it is defective from the factory and because of this the machine does not work properly. As a rule, this occurs on the very first car models.
2. If the computer battery is completely discharged and prevents the engine from starting.
3. If the ECU has blocked it.
4. It also happens that the system is worn out and requires replacement.

As we can see, there are different reasons for disabling the immobilizer. It should be understood that this procedure is very serious and quite complex. You need to know all the subtleties.

Simply unplugging the connector can completely shut down the entire engine starting system.

How to properly turn off the device

You need to start by disconnecting the connector from the protection, and then clear the data from the ECU flash memory. It should be noted that incorrect shutdown can lead to the car stalling and you will have to order a tow truck to transport the VAZ-2110 to a car service center. To prevent this from happening, you need to thoroughly study the features of this procedure.

There are two options for disconnecting: cutting the wires and reflashing.

The first option consists of the following steps:

1. First you need to find the immobilizer control unit. Often it is located at the level of the radio.
2. After this, you need to feel it with your hand and remove the connector from the block.
3. As you know, the connector has 20 contacts. First, the ninth channel is cleaned, then the eighteenth, after which they are cut off.
4. Next, they need to be reconnected and insulated.
5. After removal, you need to restore the line along which diagnostics are carried out. To do this, a jumper is made that establishes communication between the ECU and the diagnostic block. After cutting and joining, K-line operation is restored.
6. After completing this work, the connector must be returned to its place.

Reflashing is carried out in this way:

• First, the ECU is removed and dismantled;
• then the PAK loader is connected to the controller connector;
• after this the factory firmware is read;
• then this firmware is saved on the computer;
• after that the bootloader is disconnected, the controller is assembled and returned to its place.

In the case of Bosch M1.5.4, there is a need to open it. Then the ECU is installed independently in the place where the standard chip was. Next, you need to turn on the ignition for a few seconds. If everything is done correctly, the engine will start.

Rectifier module

The rectifier module is designed to convert alternating current into direct current. It is based on six silicon diodes (gates): three positive and three negative. They are located on two horseshoe-shaped plates. To smooth out voltage surges, the terminals of the positive and negative diodes are connected through a 2.2 μF capacitor.

How to check the generator on a VAZ-2110 for the functionality of the rectifier unit with your own hands? To do this, you will need a regular car tester or test lamp. The essence of the test is based on the ability of diodes to pass current in only one direction. A faulty valve either does not pass current at all, or passes in both directions.

So, first you need to remove the casing of the rectifier unit. Next, connect the first wire of the test lamp to the “B+” terminal of the generator, and the second to the ground of the device. If the unit is working properly, the lamp should not light up. If it lights up, there is a short circuit in the rectifier and it needs to be replaced.

Don't be lazy to check the capacitor as well. Turn the tester into ohmmeter mode (1-10 MOhm) and measure its resistance. For a working capacitor, it should first take a minimum value and then gradually increase. If this does not happen, replace the capacitor.

Other points

It is recommended to purchase special plugs for this vehicle that are suitable for the APS connector. They help establish communication between the diagnostic block and the ECU.

To summarize, we note that it is quite difficult to disable the immobilizer on a VAZ-2110 car yourself. You need to know all the nuances and strictly follow the rules. If the car owner is well versed in the design of his iron horse, knows all the features of its parts and mechanisms, then he will be able to turn off this device with his own hands.

It should be noted that it is important not only to disable it correctly, but also to enable it. If you follow the rules and have knowledge about the insides of the VAZ-2110, you can perform this procedure yourself; do not contact a specialist. For those who find it difficult to understand the written instructions, it is best to watch a video that explains in detail how to disable the immobilizer on a car of this brand.

The VAZ 2110 car was launched into mass production back in 1996. This model included many new developments for that time, which distinguished it from previous ones and allowed it to boldly compete with cars of a similar class. First of all, you should pay attention to the fact that the VAZ 2110 received body parts made of galvanized metal. This contributed to the car receiving the maximum degree of protection from the negative effects of corrosion. In addition, the VAZ 2110 was equipped with a new gasoline evaporation control system, a high-quality immobilizer and many other important parts.

It should be noted that it is the VAZ 2110 immobilizer that attracts the attention of any person who decides to purchase this car. The device is a special device for depriving a car of mobility if necessary, so it is almost impossible to steal it. Everything is done in such a way that only the owner of the car can turn it on or off.

Usually, when purchasing a car, you also receive a code key. In order to use it, you don’t have to touch it to the car, just press a hidden button or a special code. It is worth noting that it is possible to purchase a car with an immobilizer installed at the manufacturer.

There are many options for what exactly can be disabled using it. First of all, the fuel supply to the car is turned off, which is why it stalls after driving a short distance. In addition, in some cases the power to the engine is cut off or the transmission temporarily fails. All this will not allow the thief to drive even a block in a stolen car.

If necessary, you can make it impossible to move the car by simply turning it off. When the immobilizer is turned on, the car stalls after a certain period. The second option is most often installed on a car, because if the car brakes in the middle of busy traffic on the road, other drivers will immediately pay attention to it. In most cases, after several unsuccessful attempts to start the car, the criminal simply flees the scene.

The thing is that the criminal has no idea about the presence of the device. For the most part, it is caught a few blocks from the scene of the theft, since it is visually very difficult to determine whether this device is in the car. Unlike an alarm, which creates a noise effect designed to scare criminals away from the car, the purpose of the device in question is to ensure that the theft is successful and there is a chance to catch the criminal.

In addition, there are immobilizers that turn on immediately after the owner is at a considerable distance from the car. With this function, even if you are thrown out of a running car, you can be sure that the criminal will not get far in it. The car thief simply does not know how to disable the VAZ immobilizer, because when a critical situation is created, it is impossible to understand in a few minutes where it is and what the disabling function is connected to.

The owner of a VAZ 2110 can, if desired, remove it from the car; to do this, it is enough to simply arm or disarm the device by recognizing the owner by radio frequency waves emitted by the key. However, keep in mind that by disconnecting your car from security, you risk becoming a victim of intruders.

Tips for installing crawler

To give the Tens engine the ability to autostart, you can install a crawler. The problem is that the code reader in VAZ-2110 cars is not standard. This leads to the following conclusion:

1. The purchased crawler is included in the reader loop gap. Any other option is excluded.
2. You can make an additional antenna yourself. It must correspond to the antenna that is installed in the VAZ reader (410 µH, 25 Ohm).

Let's look at how to connect a crawler purchased in a store:

The black wire shown in the diagram goes to the alarm control output.

Usually they purchase a device that is not compatible with the inclusion of a standard loop in the gap. Comments are unnecessary here. Mistakes are also made during installation: in the BP-5 lineman they use the XS4 terminal block instead of the XS3, etc.

Immobilizer VAZ-2110: safety requires sacrifices

It doesn't work without sacrifices. VAZ standard immobilizers have been bringing their owners more hassle than benefit for almost 20 years.

Frequent groundless failures , refusals to start, incompatibility with other security systems, unreliability of the elementary base and jambs during assembly force us to disable the standard immobilizer by any means. But first, let’s briefly look at the principle of operation of the device in order to understand how to deal with it.

Principle of operation

The principle of operation of the immobilizer.

The operating principle of any simple immobilizer is ridiculously simple - the device communicates with the engine control unit and gives a certain signal when unauthorized access is attempted . The ECU, in turn, gives or does not give permission to start the engine. It happens like this - to start the engine, it is necessary for the immobilizer to accept the key and only after successful initialization it sends an enabling signal to the ECU. Even in the case when the key fully fits the lock, but is not initialized by the immobilizer, the latter will send a prohibiting signal to the ECU, and the unit will turn off the fuel pump and ignition system. Consequently, starting the engine will be impossible.

How to disable

We will not delve into the intricacies of the device and circuitry, since to repair, configure and replace immobilizer elements you need to have a good knowledge of microelectronics and experience working with microcircuits.

However, we will briefly look at several options for disabling a full-time security guard. This can come in handy suddenly when the car suddenly stops responding to the working key, and this can happen at any time. History knows of cases when the immobilizer on a VAZ-2110 was completely disabled by a mobile phone call or third-party radio interference.

All ways

To the credit of the developers, it is worth mentioning that the latest version of the decimal immobilizer provides the ability to disable it one-time. This works when such a function is activated in advance. It all looks a little ridiculous , but the engineers couldn’t offer anything better:

1. When the immobilizer is activated, a six-digit secret code is written into its memory.
2. The emergency function is activated. (This is described in detail in the instructions for each immobilizer).
3. Activation occurs by pressing the gas pedal. You need to press the pedal as many times as written in the secret code. That is, if the code consists of the numbers 123456, for example, then you need to press the pedal once, wait a few seconds, then press it twice, wait exactly the same amount, then three times and so on until the last digit. If it doesn’t work out, we train again.

As for disabling the immobilizer, there are only two options - flashing the firmware and re-wiring. The most accessible method is the second one, so let’s start with it.

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In addition, in Kalina and Priora the APS chip is already built inside the key , and on the VAZ 2110 the APS chip is placed separately in the form of a key fob , which also causes unnecessary movements