How to disable the VAZ 2110 immobilizer yourself without soldering

Anti-theft protection for domestic cars until the end of the last century consisted of using a steering wheel lock. This was the end of all standard security measures. The VAZ-2110 with a carburetor eight-valve engine had from the factory the same security system as all VAZ classics. However, since the beginning of the 2000s, when the injection system was integrated into the eight engine, it became possible to install an immobilizer. Oddly enough, most owners of injection engines think about how to disable the standard anti-theft system. Why and how to do this, we will try to find out today.

Warning: you will have to register the keys!

Read and analyze what is given below:

You can activate the Valet mode on the APS-4 immobilizer only with a “red” training key;
You can also disable Valet mode using a training key, and not some other one;
The main thing is that the “disabling” procedure will be combined with “registering user keys”;
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.

Keychains “Tens”, red – educational

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:

You need to turn off the ignition;
The alarm system, that is, the APS unit, must receive information about closed doors;
The interior lighting will go out;
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.

Contact area in the "Ten VAZ"

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.

IMMOBILIZER? IMMOBILIZER GLUE? STARTER DOESN'T TURN, PETROL PUMP DOESN'T PUMP, VAZ, LADA

IMMOBILIZER

THE IMMOBILIZER
GLUCCH ACTIVATED ? CAR WILL NOT START, FUEL PUMP.

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. Content. 1 immobilizer for VAZ 2110 - operating features, appearance, methods of disabling; 2 what the immobilizer for the VAZ 2110 looks like and where it is installed. However, keep in mind that by disconnecting your car from security, you risk becoming a victim of intruders.

Enabling and disabling APS-4

The immobilizer, even if it is activated, does not interfere with the operation of any car alarm that you decide to connect additionally. The only thing is that autostart will be impossible with it. It is possible to install a crawler or activate the Valet mode. But in the second case, the engine can be started with a blank, and in the first case, you will need to hack the alarm system.

Crawler module

Make a choice.

Shutdown procedure

Of course, here we are looking at how Valet mode is turned on. It will be easy to use:

Turn on the ignition without disarming the car;
The diode starts blinking;
The “red” key fob is brought to the reader, and the ignition is turned off while holding the key fob;
The diode will light continuously and the standard alarm buzzer will sound;
Remove the key fob;
3-5 seconds after step 3, the diode will start flashing intermittently;
Within 10 seconds, install the key fob on the reader again;
The standard alarm will produce a sound signal lasting one second, the diode will light continuously;
The key fob is removed and the ignition is turned on within 10 seconds;
The buzzer emits a short signal and the ignition is turned off.

A sequence is considered that allows you to programmatically disable the APS unit. For the Bosch MP7 controller, step 9 looks different.

ECU MP-7.0

Now it will be said exactly how.

Imagine that step "9" is replaced by the following three:

Remove the key fob, then turn on the ignition within 10 seconds;
Without waiting for the sound signal, the ignition is turned off after 2 seconds;
The buzzer sounds.

Using this sequence, the Valet mode is installed in those cars where the MP-7 ECU controller is used. VAZ cars with this controller are not uncommon. By the way, the statement almost does not apply to the 2110 family: the “Ten” was more often equipped with a domestic ECU unit.

All the sequences given above will be useless for APS-6 blocks. The VAZ company came up with the idea of making and connecting a new module when they began producing the Chevrolet Niva. Then the “6th block” moved to other cars that were produced after 2003. This means that the warning does not apply to the VAZ-2110 family.

How to get it all back

Let's say Valet mode needs to be turned off. Then you will need to take a training key fob, and at the same time you need to grab the key fobs used for disarming. Actions are carried out in the following sequence:

Turn on the ignition, bring the training key fob to the reader;
While holding the key fob in place, turn off the ignition;
The standard buzzer should emit a signal, after which the key fob is removed;
3-5 seconds after “step 2” the diode begins to blink;
When the diode blinks, a “black” key fob is brought to the reader;
The standard alarm buzzer will sound again;
After step “6” teach the next keychain;
While the diode is blinking, a “red” key fob is brought to the reader;
The diode will start to glow steadily;
You need to turn on the ignition immediately;
For the MP-7 ECU, the ignition is turned off after 1-2 seconds;
For controllers other than MP-7, the ignition is turned off after the sound signal;
Wait at least 10 seconds.

The installation, that is, the activation of the security mode, was completed completely. But, don't rush.

The APS unit is connected to the ECU

Any car alarm system that uses a one-way code is characterized by the phenomenon of loss of synchronization of the operation of elements (blocks). When we talk about the VAZ immobilizer, this is what we mean: the ECU and APS units lose synchronization.

Let's perform the resynchronization procedure:

They open the door, disable the security with a “black” key fob;
Turn on the ignition;
If the diode blinks at a frequency of 1 Hertz, you need to turn off the ignition and wait 15 seconds.

After completing step 3, the system is ready for use. In general, synchronization is lost when key fobs are registered. But this will also happen if you disconnect and then reconnect cord 28 (line “K”).

Note: do not try to register a key fob used in another LADA car! You need “standard” key fobs or new ones.

When to disable the immobilizer

It would seem, why would a car owner disable the immobilizer on his VAZ 2110 if the device serves him for his benefit. But there are several reasons that force or force you to do this.

The protection has a design flaw, that is, a manufacturing defect. This is a common problem with the first versions of immobilizers installed on the VAZ 2110. The updated versions have an option for an alternative engine start, which allows you to bypass the protection. It works like this - if the system glitches, an individual six-digit password is entered, the option is activated by pressing the gas pedal the required number of times. The procedure must be done six times. Let's say your password is 255998. You press the pedal twice, wait a little, then press five more, wait again - five more times, wait - press two times nine with breaks, then eight. The function is described in detail in the instructions for the immobilizer, so first of all you need to familiarize yourself with it.
If the battery is completely discharged, the computer may perceive the situation as an error, making it impossible to start the engine. The engine ECU and the anti-theft system exchange information via the diagnostic line, so without power the computer remembers this as an error.
There are many strange and inexplicable reasons why the ECU blocks the immobilizer. For example, there have been episodes when a mobile phone that was turned on or rang at a certain moment knocked down the car’s anti-theft system. Most often, this situation was observed during the first launches of the new VAZ 2110.
A banal failure of the immobilizer and the need to replace it with a new device.

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:

The purchased crawler is included in the reader loop gap. Any other option is excluded.
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:

Inclusion of a trouser loop in a gap

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.

How does it work

This device works in conjunction with the standard fuel injection system controller. The VAZ immobilizer is connected to the latter in the gap in the K-line between the ECU and the diagnostic connector. To unlock the security device, a key containing a special tag is used. It emits an encrypted access code.

The status indicator has a built-in coil that receives the signal from the transponder built into the key. If the latter was recognized by the car anti-theft device, then it transmits an enabling signal to the controller via the K-line. To unlock the immobilizer, you need to bring the key to the status indicator. If initialization is successful, the immobilizer will allow the engine to start. Otherwise, the controller, upon a signal from the security unit, will turn off the ignition system and the electric fuel pump.

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:

Antenna coil for reader

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.

Principle of operation

Immo connection and operation diagram If you decide to connect the immo to the VAZ 2110 central locking system, first familiarize yourself with the principle of operation of the system. The operating principle of the immo is based on the exchange of data between the device itself, as well as the control unit. Taking into account a particular situation, the immobilizer determines whether to give permission to start the engine or block it. In the latter case, the ignition circuit and the fuel pump are blocked, making it impossible to start the engine. In other words, if you do not have an immo key, then operating the car will be impossible.

1. APS-6 board.

2. ROM on the immo chip.

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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