Today you won’t surprise anyone with an anti-theft system - many modern cars, even old foreign cars, are equipped with alarms and central locking systems (CL). However, not all old cars are equipped with such a protection system, although, to be honest, it is not of great value. In this article we will talk about how to install a central lock on your own and what is needed for this.
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Installation Guide
If you decide to equip your car with a car central locking system, this may be one of the options that will improve its security when the driver is not present. Moreover, if you have level hands, this is not so difficult to do. How should the installation be carried out and how should the reinforced central locking device be connected to the car? Before installing the system on a car with or without an alarm system, it is necessary to prepare for the work, including preparing an electrical circuit.
Tools and materials
Installing a central lock with your own hands and connecting it to a car alarm begins with preparing the necessary tools, namely:
- central locking system kit, which includes the system itself, as well as an actuator;
- wire, it is better to give preference to two-core and copper wiring;
- other metalworking tool.
First stage
Before connecting the alarm to the central locking, you need to disconnect the battery. After all, these works will interfere with the electrical circuit, so it must not be allowed to short circuit.
So, the connection diagram for the central locking is as follows:
- To install and connect the central locking, you must first remove the door cards; to do this, disconnect the corresponding fasteners and unscrew all the bolts. In this case, each car has its own individual nuances that need to be taken into account, but in general, car enthusiasts usually do not have problems at this stage.
- After this, you need to choose the place where you will install the central locking system. To do this, pay attention to the operation of the window regulators - of course, they should not interfere with the system. It is quite possible that in order for the installed lock not to interfere, it will be necessary to make an additional bracket. As practice shows, usually the lower left corner of the door is the most optimal location for installation.
- Further, connecting the alarm system to the central locking includes the stage of installing the activator. Each solenoid is placed on a separate door; for installation you will need to drill the corresponding holes and secure the devices with self-tapping screws.
- Then the solenoid must be secured to the lock rod. It will be necessary to secure each solenoid from the kit using clamps. It should be taken into account that the rods on both locks (or on four, depending on the system) must be combined. After this, the activators need to install mounts on the rods of the manual central locking unit; this stage is also performed with each individual door of the car. When connecting the actuator components, it will be necessary to diagnose the wiring for voltage conductivity. If the hole in the lock rod is large, it is necessary to additionally use a plastic bushing - it will provide the required dimensions.
- Next, connecting the alarm to the central locking includes wiring. There are four cables coming from each solenoid - two to it, and two more to ground - they must be secured with plastic clamps. But in general, this stage is individual for each individual car - for example, you can use existing holes or drill your own with a drill. There is no need to lay the wiring from the bottom of the door, since moisture collects here.
In addition, the wires from the solenoids must be carefully connected and routed from the opening between the car door and the body, since this moving part can damage the wiring. Use a rubberized tube for installation. P When laying wires in the doors, make sure that they do not break when closing(author of the video - SIMPLE THINGS).
Second phase
- The central locking diagram should be at hand at this stage. The control panel is dismantled; to simplify the stage of laying the wiring, it is better to dismantle it completely. You will need to ensure that the cables are routed through the appropriate opening, and also locate where the wiring runs under the glove box and center console.
- Next, you need to remove the old wiring - it is removed from the window regulators, a new one is installed, after which the central locking compressor is connected to it. You also need to connect the cables from the solenoids - they are laid in the door structure and are completely insulated. For more reliable fixation, it is better to fix the sludge using electrical tape.
- When all these steps are completed, the cables must be laid on one side in the glove box, and on the other under the control panel. Here you need to be patient, because in general this stage is quite complex and painstaking. It's not always possible to do everything the first time.
- Next, the passage pipe is installed. This element of the system can be placed in a rack; it must be fixed. But be careful, as it is not advisable to damage it.
- After these steps, the wiring is connected to the output. A safety component is then connected to this output and must be connected to the system's power supply. This entire structure must be mounted under the center console.
- The wiring from the central locking is then connected to the housing. The negative output of the system should be connected to the vehicle body. As for the positive wire, it needs to be connected to the safety component and installed near the battery. Don't forget the button. The central locking button is installed inside the car; it is best to install it in the door trim. Using the button, the central locking itself will be adjusted from inside the vehicle interior - closing or opening it.
- When all the steps are completed, it is necessary to check the functionality of the installed system. To do this, connect the battery and check how the device works - both its mechanical and electrical components. Remember that the movement of the door rods should be as soft and smooth as possible. If one of the rods is not working, use a multimeter to diagnose the voltage.
- At the very end, you will need to put everything in place. The center console with door trims is installed. Regarding the torpedo - in order to prevent possible squeaking in the future, the perimeter of the contact point between the torpedo and the body can be coated with silicone.
Connecting the alarm to the central locking takes some time. Connecting a car alarm to the central locking system (CL) looks difficult. If you know the type of lock on the car, there are no difficulties. In the article below, we will describe the connection of alarms to the central locking system, of various designs.
Preparing to connect a car alarm to the central locking
Connecting an alarm system requires studying: standard locking devices installed. The central locking of the car is a system of electromechanical operating principle. and central locking require coordinated work. The central locking assembly consists of the following components:
- The control module, which is responsible for the synchronous operation of all locks, is connected to the electronic protection of the car against theft using the provided connectors.
- Buttons, sensors, connecting the alarm system to the central locking system.
- Central locking drives are available in electric and pneumatic versions. Car alarms are often connected to power locks.
Connecting electronic security to the central locking of the car is carried out with a preliminary search for access points. Only a specialist knowledgeable in electrical engineering can find access points. The points are indicated in the diagrams: instructions for installing car alarms; cars.
On passenger vehicles, control modules, with vehicle protection connection points, are located in the places designated for them. Car alarms are connected to the central locking system via the interior wiring switching unit. Different brands have their own locations, but specialists know them.
It is common to place blocks at the bottom of the front panel. On older brands of vehicles they are located to the left of the steering column. On new Russian models, the blocks are located to the right of the gas pedal.
Basic principles of connecting the alarm system to the central locking
There are options for connecting electronic anti-theft protection to the central locking system. On car alarm diagrams, the contacts used by the relay in the car are indicated.
Methods for connecting car alarms to central locks:
- Positive impulses.
- Negative impulses.
- Alternating polarity.
Below we present the connection of the alarm system to the central locking system.
Positive impulses
Connecting a car alarm to the central locking of a car with positive impulses is done in two ways:
- (A) is used when the central locking is controlled by an electronic module.
- (B) – when controlling internal drives.
The use of circuit (A) when connecting the electronic protection of a car is typical for the following brands: General Motors; Volkswagen Passat; Renault; Kreisler; parts of BMW, Ford models.
The essence of connecting the central locking system with a car alarm is to apply a pulse - 1 s to the control wires. The control module is triggered. By connecting the contact of a multimeter or “tester” to the positive terminal of the car battery, the wires of the door bundle are pierced one by one with a free probe. Electric locks are activated when the desired wire is punctured.
The procedure is performed by qualified specialists. Connecting an alarm system using this scheme simulates the closing and opening of locks using buttons.
By connecting electronic anti-theft protection - circuit (B), we achieve control of the central locking drive with positive potentials. The contact group of the drive is connected to the contacts of the machine alarm relay. The pulse duration is set to 4 s. – drive response time. Power is supplied through the fuse.
Negative impulses
Negative central locking control is widespread in many brands of cars; connecting car alarms is typical for passenger vehicles: Opel; Toyota; Honda; Fiat; Volvo; Citroen; parts of BMW models; VAZ 2111.
The central locking is controlled by applying a short negative pulse – 1 s – to the control wires from the vehicle’s electronic protection. The car alarm is connected according to the previous diagram (A). The difference is that wires are connected to the contacts of the alarm relay, supplying a negative pulse of 1 and 4 s in length to the central locking system.
A clear example of connecting a car alarm to the central locking with a negative pulse is the VAZ 2111.
Alternating polarity
The third type of electronic central locking control is the alternate supply of positive and negative pulses to the drives. More often observed in cars manufactured in the USA between 1990 and 2000. 3 schemes were proposed:
- Power buttons;
- Central locking control module;
- Electric drives.
The first scheme, most often found in cars manufactured in the USA between 1990 and 2000, is based on the use of door buttons. The door buttons are connected to the contacts of the electronic protection relay. Turning protection on and off copies blocking and unlocking with buttons. The corresponding impulses - positive or negative - are sent to the wires of the buttons that operate to open and close the alarm. Power is supplied through a fuse designed for a current value of 10 to 15 A.
According to the second scheme, the alarm connection is realized through the central locking control module. The electronic protection wires on the vehicle are attached to the break in the power conductors of the drives. The installer must have a good understanding of alarm and central locking circuits.
The third reversible connection scheme is based on sending signals from the car alarm key fob to the car's central locking. The pulses are supplied through the machine alarm relay, which changes polarity with a period of 1 s.
When connecting electronic car theft protection to the central locking, difficulties arise. To eliminate negativity in the process of connecting nodes, you should stock up on diagrams, tools, and devices when connecting the alarm system to the central locking system. It is advisable to read on the forums about possible difficulties when performing connection operations into the system.
Many car alarms are connected to central locking systems. Modern alarm systems do not care what drives are used in the locks. Central locking is controlled by positive, negative pulses, as well as alternating polarity, transmitted by car alarms.
Central locking with remote control is a convenient device that allows you to open the car by pressing just one button. With a centralized lock, the driver does not need to open each door separately and then worry about closing them. Some models are responsible not only for opening the doors, but also for the trunk. This function is very convenient if your hands are busy or the handle on the trunk gets dirty while using the car.
Like all electrical-based automotive systems, the central locking can sometimes fail, which brings a lot of inconvenience to car owners. While some problems can be fixed on your own, others require a complete reinstallation of the system.
For the driver whose car has a central locking system installed, it is important to know the principle of its operation. Sometimes there are cases in which a faulty door can open on its own, so experts recommend checking the reliability of the locks every time. The central locking system consists of several devices, the operation of which ensures reliable protection of the car from theft. There are three main parts of the system:
- the block through which the system is controlled;
- switches;
- executive equipment.
During operation, the control unit transmits electrical signals to actuators and analyzes the work being performed. The block decrypts the signal and further executes the given commands. Tasks can be transmitted to various parts of the car, provided that actuators are installed on them.
Switches are responsible for changing and fixing the position of locks. When a command is received from the block, microswitches paired with limit switches perform their work, thanks to which the executive equipment can perform the assigned tasks. Locking devices act as executive equipment. At the command of the block, the central locks open or close the machine and its various parts.
Central locking does not affect engine operation, unlike the alarm system. Blocking from the central locking control panel can apply to:
- door locks;
- window lifters;
- trunk;
- fuel tank cap.
The remote control key operates on batteries, so you need to check their charge regularly and replace them if necessary.
Common malfunctions and their main symptoms
The most obvious sign of a malfunction is a partial or complete failure of the system. Sometimes the central locking operation occurs with some delay, which also causes a lot of inconvenience. The central locking system may be damaged in different places, but the result will be the same. If the cause of defective operation of the system is a dead battery in the control panel, then it is necessary to carry out a set of measures to identify malfunctions.
In addition to dead batteries in the control panel, serious damage to the electronic module may occur. If the remote control of the central locking does not work when you press the button, you must close the driver's door using the key. If the lock works, then the remote control itself is faulty. If there is no response from the central locking system, it is necessary to carry out further diagnostics of the system.
Fuse failure
A blown fuse is the second most common reason why the central locking remote control module does not work. Power surges in the network cause the fuse to burn and break the contact of the lock with the electrical network. Overloading the circuit leads to premature failure of the fuses.
Most often, overload occurs due to excessive current consumption by the motor.
Incorrect operation of the motor may be caused by incorrect adjustment or breakdown of one of the actuators. Also, the fuse fails due to a short circuit. If only a few days have passed since the last fuse replacement, then the technicians recommend checking the entire electrical network for damage.
Electrical network break
If the chain is damaged, a key with a remote control for the central locking will work unstably or stop responding completely. A fairly common cause of problems with wiring are creases that appear in places where the wires bend. In order to find a broken wire, you can carefully pull the wires one by one. If this method does not allow you to quickly detect a break, then you should use special devices to identify damaged wires.
The control unit rarely fails, but if it is the fault, then sometimes it is more expedient to replace the part completely. To identify a malfunction, you will need a special device - a tester. Before testing the device, you need to find an electrical diagram to facilitate the diagnostic process.
Other reasons for lock failure
Sometimes the cause of a breakdown of the central lock can be dirt or liquid getting into it. Contact oxidation or battery malfunction can also affect the operation of the system. Foreign objects that get inside the lock can interfere with its operation and lead to failure of the entire system.
Another common breakdown is the spontaneous opening of doors. The driver closes the door using the electric remote control, but after a while the car opens on its own. The cause of such a malfunction may be incorrect fastening of the rod located on the driver's door between the locking mechanism and the drive. Incorrect fasteners can impair the performance of not only the central lock, but also the door itself.
Unadjusted passenger doors may also not close due to a loose fit of the door leaf.
Central lock repair
A remote controlled lock requires minimal qualifications to troubleshoot. Repairing the central locking system will require the use of special tools and devices. Since the serviceability of the lock affects the safety of the car, you should not skimp on repair work. In specialized services, technicians will carry out repairs in a short time and issue a guarantee. If you want to do all the work yourself, then you need to prepare a number of tools and devices:
- tester;
- screwdrivers;
- pliers;
- wrenches of various numbers and much more.
Since diagnostics are performed before repair work, all identified problems are known immediately. Depending on the faulty parts, they are partially or completely replaced.
You begin to appreciate many things after they are gone. The same applies to the additional options of the VAZ 2110. Central locking (CL), for example, you can not notice as long as it works properly or you can do without it altogether. But you quickly get used to good things, don’t you? Therefore, when something that provides us with a comfortable ride fails, you immediately begin to rush around in search of answers “how to fix it.”
VAZ cars are not least good for their high maintainability. Whenever something happens to your iron horse, you can almost certainly solve the problem yourself without the help of specialists at a service station. “Ten” was no exception in this regard.
As for the central locking system specifically on Lada 110 cars, this is really a rich topic for discussion. Ignorance of elementary circuits and the operating principle of the unit can confuse many motorists. However, servicing the mechanism is quite simple. And given the enviable frequency of its failure, it turns out that knowing “how” is simply vital.
What is the central locking on the VAZ 2110?
The purpose of this type of device is to centrally control the automatic mechanism for opening and closing all doors in the car at once. This is especially convenient for working in conjunction with an alarm system and when operating a car in general. However, the reliability of the operation of the central locking system should definitely be checked every time by moving the handles of all four doors before going about your business for a long time, since the actuator can often fail and one of the doors may remain unlocked.
Structurally, the VAZ 2110 central lock consists of the following elements:
- electronic transistor control unit;
- gearmotor actuators, also known as activators (one for each door);
- a limit switch that determines the current state of the door (open or closed);
- electrical wiring and other installation elements.
Why the central locking on the VAZ 2110 does not work correctly
The problem of improper operation of the actuator is not at all uncommon for cars in the domestic automobile industry. Despite the fact that there are a number of reasons for the failure of mechanism parts, the principle of operation of the automatic door closing system is quite simple, and the malfunctions are very typical in their entirety. This means that any motorist can deal with them.
You don’t have to grab your head and run to the workshop in search of a qualified specialist. Thanks to the diagnostic recommendations below, you yourself are very likely to become one. If, for some reason, you don’t want to get your hands dirty, at least no one else will dare to mess with you. And this, you see, also costs a lot.
Problems in the operation of the activator electric drive
The central locking actuator is quite fragile and does not tolerate overload. The activator body, made of plastic, can easily melt if the frequency of door closing is excessively high. The duration of the control pulse also plays an equally important role. Try to always remember about the extreme fragility of the activator and not to load it during operation.
It is easy to guess that the activator is located in each individual door of the car. If the body of one of them melts due to overheating of the electric drive commutator, this becomes the cause of many problems:
- the activator on individual doors stops functioning;
- Constant overloads in a jammed electric drive cause the fuse to fail.
The actuator mechanism is entirely made of plastic. Gears can easily wear out and break during operation, or melt when the commutator overheats. As a result, when the central locking operates, characteristic creaking sounds are heard - a sure sign of imminent failure of the activators. Likewise, if the gearbox of the mechanism is humming, but the doors do not open or close.
Malfunctions of this kind can also be associated with all sorts of defects in the gearmotor and its traction. If you have recently replaced your central locking system, the reason may be that it was installed incorrectly. The mechanism may also be incorrectly adjusted or the fastening may be broken. In any case, the door trim should be removed and checked visually.
Problem in the operation of the central locking electrical circuit on VAZ cars
The first possible problem follows smoothly from those mentioned in the previous section. Overload in the operation of activators leads to an increase in the operating current in the supply circuit above the rated value. As a result, the fuse blows and the central locking of the VAZ 2110 simply “dies”.
It is by checking the fuse that the diagnosis of central locking malfunctions begins. By the way, it is located in a very specific place and it is not easy to find it right away even if you know where to look. In order to get to it, you will need to fold back the central panel with the fuses and dig into the entire wiring harness in the niche that opens behind it. The “comrade” you need is packaged in a special plastic cup and connected to the pink wire.
Another very common and obvious problem is the central locking connector. It is located in the most unfavorable place for this in the interior body, under the foot mat. A large amount of moisture and dirt inevitably gets there. Electrical contacts are intensively oxidized. As a result, the power supply circuit involuntarily breaks at the point where the plug connector is connected.
Problem with the operation of the VAZ-2110 central locking control unit
Electronics, of course, are reliable things. Modern control modules for the central locking VAZ 2110 are assembled using a transistor control circuit. This eliminates their mechanical wear. The shelf life of key components is measured in tens of years. The control unit is located under the plastic dashboard cover on the right side of the driver's seat.
However, power transistors can easily fail when the activators are overloaded and the collector is short-circuited. It may even happen that the signal from the control unit will constantly be sent to the lock drive if the transistor is broken. Otherwise, it will simply not turn on.
Checking the control unit is extremely simple. The voltage from the negative terminal of the battery, or directly from the pink wire supplying the control unit, is supplied to the contacts of the gearmotor (activator) in series to the red and yellow conductors. All of the above contacts can be found directly on the eight-pin connector of the control unit.
Remote control is an electronic-mechanical system responsible for locking and unlocking all car doors, including the trunk and fuel tank lid. In addition to the function of simultaneously unlocking all doors, the device also provides a decentralized system that allows you to open and close only those car doors that are needed at a particular moment.
How does remote controlled central locking work?
Absolutely all locking systems are equipped with central locking with remote control. It includes several mandatory elements, namely special mechanisms that receive and respond to the signal; central locking control unit; output sensor
It is much more convenient when the system is equipped with a general person responsible for each individual door. The central locking remote control unit receives a signal from the remote control, processes it and opens the doors. The entry sensor, consisting of switches built into the doors, microswitches and mechanisms, transmits information to the main control unit through a unit for different doors and lock elements, and it, in turn, sends a signal that turns the action of the actuators (actuators) into an electrical signal B If the limit switch fails, the car owner will not be able to perform any actions with the doors.
Functions of mechanisms
The small gearbox is also responsible for the operation of the actuators. For the manufacture of gearboxes, durable plastic is usually used. The signal coming from the main control unit drives the motor, and the gearbox causes the lock elements to operate. The operation of this control system is based on the following principle: the key (key fob) has a built-in microtransmitter, from which a signal is sent to the main unit, equipped with a radio antenna. The central locking with remote control is capable of interacting with the key fob at a distance of up to 15 meters on average. Once the signal for an intentional action is determined, the main unit transmits a special signal to the units responsible for opening/closing each door, after which the mechanism is turned on.
Remote central locking system
Remote opening/closing of different doors is carried out after pressing a special button located on the key or key fob. After the door locking function is activated, actuators (actuators) are activated, which complete the specified process. At the same time that the remote controlled central locking locks all doors, the locking is activated and the alarm system is activated. The anti-theft alarm system has feedback from the remote control, which can signal the car owner about an attempt to unauthorizedly open the car. However, it should be taken into account that the notification radius is small.
