1. If the buzzer sounds 1 time and the immobilizer indicator flashes, the diagnosis is “The key cannot be read.” Possible causes: 1.1 Malfunctions of the transponder circuit – this group of malfunctions is characterized by the absence of a “signal about the key left in the ignition lock” when the ignition is turned off and the driver’s door is open. 1.1.1 Malfunction in the ignition switch communication coil circuit. Measure the resistance of the communication coil between the contacts of the 2 black terminal block from the ignition switch, which should be within 6 - 8 Ohms. If the coil resistance is normal, check the continuity of the circuit between the 2-terminal block to the communication coil and contacts 1 and 11 of the APS-6 unit. 1.1.2 There is no transponder in the key. In the training key - check the presence of a transponder and its designation, it should be PCF7936AS. If there is no transponder, take a “clean” training key and a “clean” engine control system controller (ECSC) and retrain the immobilizer system. 1.1.3 The transponder in the key is faulty; it is detected during pre-sale preparation at PSSS. In the training key - you need to take a “clean” training key and retrain the immobilizer system. In a working key with a remote control (RC), you need to replace the remote control with a “clean” one and retrain the immobilizer system. 1.1.4 Malfunction of the input transponder circuit of the APS-6 unit - it is necessary to replace the APS-6 unit and retrain the immobilizer system. 1.2 “Alien” remote control – this malfunction is characterized by the presence of a “signal about the key left in the ignition switch” when the ignition is turned off and the driver’s door is open. It is necessary to replace the remote control with a “clean” one and retrain the immobilizer system.
2. If 2 buzzer signals sound and the indicator flashes, the diagnosis is “No connection with the CSUD.” Possible reasons: 2.1 Break in the communication line along the W line - restore the circuit between contact “18” of the APS-6 block and contact “71” of the CSUD M7.9.7. 2.2 Malfunction of circuits in the APS-6 or KSUD block on the W line - to identify a faulty product, it is necessary to carry out a test replacement of them one by one. If after replacing the product the fault code does not recur, it must be replaced. 2.3 There is no supply voltage on the APS-6 or KSUD unit. Check the presence of voltage at the contacts of the KSUD M7.9.7 a) contact “12” – power from terminal “30” of the ignition switch; b) contact “13” – power supply from terminal “15” of the ignition switch; c) contacts “44”, “63” – power supply from terminal “30” of the ignition switch after the main relay.
3. If 3 buzzer beeps sound and the immobilizer indicator is constantly on or blinking - the diagnosis “The code of the read key is not in the APS memory.” Possible reasons: 3.1 If, after turning on the ignition, the immobilizer indicator lights up continuously for 20 seconds and 3 buzzer sounds sound, then the immobilization system has not been trained, the system should be trained. 3.2 If, after turning on the ignition with the training key, the immobilizer indicator flashes and 3 buzzer signals sound, then the APS-6 unit is “foreign” or the key is “foreign”. 3.2.1 “Alien” block APS-6. If the APS-6 unit turns out to be “foreign”, to restore functionality it is necessary to retrain the system with a “own” training key for the KSUD. 3.2.2 “Alien” training key. If the training key turns out to be “foreign”, to restore functionality you need to take a “clean” training key and a “clean” ICS and retrain the immobilizer system.
4. If 4 buzzer beeps sound and the immobilizer indicator flashes, the diagnosis “ECS does not confirm permission to start the engine.” This means that the KSUD was previously trained with a different system; it is necessary to replace the KSUD with a “clean” one and retrain the immobilizer system.
5. If, after turning on the ignition, the immobilizer indicator lights up for 20 seconds and the buzzer does not sound, then the immobilizer is trained with its keys, but the ACS is not trained. The system needs to be retrained.
Note: According to paragraphs 1.1.2, 1.2, 3.2.2, 4, work to eliminate the malfunction must be carried out at the expense of the consumer.
I PAY YOUR ATTENTION: 1. When performing paragraph 2.2.4 (TI 3100.25100.12024) of the immobilizer system training procedure, the code is written to the working key from the remote control and it becomes linked to the training key with which the training was carried out. 2. The activated APS-6 unit and the Norma electrical package can be retrained with any training key.
Chevrolet Niva car. Instructions for working with the APS-6 immobilizer
Removing immobilizer Chevrolet Niva ECU Bosch 7.9.7+ in Petrozavodsk
It is enough to remove the chip from the key and attach it to the immobilizer antenna so that deactivation occurs quickly and without problems. If you mistakenly performed this action, the immobilizer immobilizer on the Chevrolet Niva will beep three times immediately when you turn on the ignition, warning you that the learning mode will continue. In this case, you must turn off the ignition and wait until the light stops flashing for about 6 seconds.
Features of the standard immobilizer Niva Chevrolet
It is possible to replace a faulty controller with another one in which the anti-theft function is already activated, but only if the training key that was used to activate the anti-theft function in the controller is used.
Using the training key from the newly installed controller, you need to carry out the system training procedure. This situation is similar to the situation with replacing a faulty immobilizer, see Stopping on a busy road forces a thief to retreat.
Now let’s figure out how the Chevrolet Niva recognizes the owner; the alarm system does not prevent the engine from starting.
In this model, there are 2 recognition methods: One of them is contact recognition. Its essence is that the correctness of the key fob inserted into the ignition switch is determined. There are many locks designed for the Chevrolet Niva, in various designs, so it is very difficult to find the key you are looking for.
The second option refers to a contactless recognition method. This option allows for reliable control of recognition from a distance.
For this purpose, the alarm immobilizer is equipped with a more powerful transceiver. When the car owner moves away a considerable distance, the blocking is performed automatically. This method emphasizes the reliability of the security system control. The non-contact immobilizer model installed on Chevrolet Niva cars from this year includes the APS-6 device.
Interaction of ignition keys with the standard immobilizer The car manufacturer equips the vehicle with two keys to start the engine. Ignition keys have different inserts: This option is more complex in terms of implementation. If you need to use the diagnostic line, restoring it will be much more difficult than simply removing the jumper from the plug.
To clear the immobilizer memory, you will need to disconnect the blocker from the power supply.
After this, the jumper is installed in contacts numbered 9 and the next step is to replace the standard chip with a special one. It must contain software to clear the blocker's memory.
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The key is inserted into the lock and the ignition is activated for a few seconds. During this time, the blocker will automatically clear its memory and perform a flashing. What to do if you can’t disable the immobilizer and the car won’t start? If the lock indicator is on on the dashboard, you cannot turn it off and the engine does not start, the reason is a malfunction of the IMMO.
Immobilizer VAZ
Then you can try to physically dismantle it from its installation location. Find where the blocker is located.
Niva Chevrolet. Egnition lock. Mechanism repair.
Remove it, unscrew the four screws securing the device, and disassemble the device. Completely draining the battery in a vehicle with an immobilizer may result in unnecessary information being stored in the EEPROM.
As a result, you will have to take the car to specialists. For many years, inexperienced technicians simply changed the control unit by physically disabling the immobilizer. Interestingly, the immobilizers on VAZ cars refused to work correctly very often, so the manufacturer even supplemented the new software with a special option designed for alternative starting of the power unit in unforeseen situations. This means that the controller gives permission to perform one trip in emergency mode.
To do this, you must enter the appropriate password and activate the function by pressing the accelerator pedal. More details on using this feature can be found in the immobilizer operating instructions.
Chevrolet Niva, Lada Kalina, VAZ and other models released after the year began to be equipped with a more modern device. In APS-6, the reader is located in the steering column, and the code key is integrated into the ignition key.
The updated device also has new features. For example, it can be used to control electric windows, rear fog lights and perform diagnostics of APS-6 using K-Line.
The vast majority of modern cars are equipped with their own anti-theft systems, and this applies not only to foreign, but also to domestic manufacturers. This device to prevent the engine from starting is called an immobilizer, and it comes in two types, contact and non-contact. As can be understood from the definition, the first option is intended to be controlled using a key, and the second using a special card or key fob.
Disabling the immobilizer on video:
Despite all the convenience of this option, some owners want to disable it, and in this article we will tell you in detail how to do this.
What to use to disable the immobilizer and how it works
Professionals disable the immobilizer on all cars using special software, but this process is quite complicated. In order to disable the immobilizer of VAZ 2110, 2111, 2112, it is not enough to simply know where the main system unit is located, because it is impossible to simply pull it out without preliminary disabling steps.
If the immobilizer works perfectly or any malfunctions are detected in it, you can disable this VAZ security system in the following ways;
- using a special code;
- using the chip from the immobilizer key;
- having a killer system;
- using a crawler or emulator;
- using a computer program that works with the specified car brands.
Each immobilizer has its own unique code; if you enter it on the dashboard, the system is deactivated. It's simple, but not very simple. This cipher can be hidden in a key chip, a plastic card or inside a system unit; a person can simply forget it. If you cannot use the code entry method, in order to disable the immobilizer you need to proceed to the next step.
Disabling using a chip consists of the following steps:
- you need to carefully disassemble the key and remove the chip from it;
- find where the antenna is located and attach the immobilizer chip of model 4, 6 or 16 to it using electrical tape;
- wait for the system to react;
- find the main unit, its connector and pull out the wires from there;
- continue dismantling the system.
If it is not possible to disable the immobilizer, the driver should use crawlers, emulators and killers. An extreme case is a computer program or seeking the help of specialists
Be careful when turning off valves. Up to 16 wires can be connected to the immobilizer connector
Instructions will help the driver to disable the immobilizer on the VAZ 2110.
https://youtube.com/watch?v=i3m6msS6Z64
It would be better if a specialist handles disabling the immobilizer, but if the driver has a little knowledge of security systems and VAZ cars, he can do this independently, regardless of whether there are 7 wires or 16 connected to the system.
The principle of operation of the immobilizer on a Niva Chevrolet
Chevrolet Niva cars were equipped with immobilizers straight from the factory, as soon as the new car rolled off the assembly line. However, despite the fact that it is mounted there, it is activated by the dealer or the first owner of the car.
It is not difficult to understand how this standard anti-theft system works. The key fob, being within the reach of the ECU (car control unit - approx.), sends it a signal, allowing the engine to start, usually this happens after the key is initialized near or in the car.
If any error occurs in the feedback, the fuel pump and ignition will simply be blocked.
Reasons for disabling the immobilizer
Immobilizer unit inside the instrument panel
In order for the immobilizer circuit to fail on a Niva Chevrolet, you do not need to be a specialist, because this can even happen from incorrect connection of diagnostic equipment to the system. Turning on additional units with the ignition on can be called “wrong”. And this happens because the car’s ECU transmits all information via the K-line (diagnostic line - approx.).
Another reason for the appearance of an error in the “immo” can be the complete discharge of the battery, due to the car being parked for a long time, so unnecessary information is stored in the memory, interfering and blocking further starting.
Emergency engine start with activated immobilizer
It turns out that the manufacturer is aware of frequent breakdowns and malfunctions of the standard anti-theft protection system and has provided special software with the option of starting the engine in an emergency or unforeseen situation.
That is, despite all its security, it became possible to make a trip until the engine was turned off by entering a special password and pressing the gas pedal.
You can find out more about the availability of this function in the operating instructions for your car.
Recommendations for shutdown rules
Disabling the immobilizer is not a difficult task, but consistency is important in this matter. To deactivate the device, we proceed according to the diagram supplied by the manufacturer. We detect the device where it is located and try to disconnect it from the power module.
We stock up on tools:
- rubber hammer;
- a Phillips screwdriver;
- figured bat;
- cardan type hinge with a corresponding extension.
Let's act!
- We remove the battery.
- Remove the dashboard protection.
- The immobilizer looks like a small black box and is located behind the interior heating control module. Here the difficulty will arise with the approach to the bolts that secure the device.
- You will first need to de-energize the APS. To do this, pull out the plug while holding its plastic retainer with your hand.
- Sometimes owners of LADA Kalina forget about the need to restore the diagnostic connection (line) after dismantling the anti-theft module. For this purpose, a jumper is required, through which the exchange of impulses between the diagnostic block and the ECU itself is restored. If there is no need for such an option, then we proceed more simply - we connect the appropriate cables to provide the “K-line” functionality.
Activation of the Lada Granta immobilizer
Roof rack for Lada Granta
Granta what is included in the standard Lada Granta
Having completed the removal procedure, we configure “APS” again. You will need to erase the entire list of data stored by the immobilizer in the volatile memory of the engine control module.
This process looks like this:
- Do not forget to remove the connector with wires from the device socket in advance.
- Now we resort to connecting the contacts labeled “18” and “9.1”.
- We open the controller housing, where it is located, as can be seen in the diagram, and insert the chip with the cleaning utility instead of the standard wiring chip. We are trying to start the engine. It will start if all the specified actions are performed correctly.
- If you cannot remove the designated chip, you can find the Combiset software product, which is also capable of clearing the memory. When this method does not bring results, then you will need to re-solder the circuit socket itself.
Owners of LADA Kalina with an ECU in the “January 5.1” version were luckier. The module allows you to easily install the Eeprom program. It is capable of overwriting data with new firmware, which can be obtained from an untrained anti-theft device by reading from the on-board controller. These actions ensure that the ECU can independently generate the required password, after which the engine will be allowed to start.
Sometimes there are cases when it is not possible to completely eliminate data, for example, from Eeprom. There is an exit! Let's try to edit the dump file. Here the bytes from “2” to “7” are replaced by the letters “FF”.
Types of immobilizers
Chevrolet Niva cars, which were produced since 2004, began to be equipped with a more advanced immobilizer labeled “APS-6” - this model, unlike its predecessor “APS-4” , was already located on the steering column, and the encryption code itself is integrated into the ignition key. In addition, the new device “learned” to work with power windows, fog lights and diagnose the system via the K-line.
This is what the immobilizer mounting block looks like.
Note!
Such cases have been repeatedly noticed when a new device was located in the case from under the old “immo” model. You can recognize the catch only by looking at the symbols on the device board.
