21093 6512010 03 Central locking connection diagram

VAZ 2109: central locking - purpose, operating principle, installation method

The central locking unit of the VAZ 2109 ensures the safety of the vehicle, which is one of the most important factors for the driver. There are different anti-theft security systems for car safety. An important role is played by installing door locks. The main purpose of the device is to simultaneously close and open doors in a car. In addition, on the VAZ 2109, central locks control the luggage compartment and fuel tank lids.

VAZ 2115 where is the central locking located?

The central locking VAZ 2114 (hereinafter referred to as CZ) is a mechanism that ensures the simultaneous closing or opening of all four doors in the car. This option is very convenient; it eliminates the need to reach out and lock the doors manually every time. Such centralized control comes in handy when installing car alarm systems, which significantly expands the possibilities and variations of the use of the locking mechanism.

The operation of the lock itself does not depend on whether the car engine is running or the fact that the ignition is turned on. Power is supplied directly from the battery. It is quite common for the system to malfunction. For example, when the locks of some doors close, but the rest do not. Or the closing process occurs with great difficulty, jamming, or partial failure of the latches. A situation familiar to many car enthusiasts, isn’t it? There are several reasons for the node to not work correctly; we will look at them in more detail.

7 common faults

Why does the central locking of the VAZ 2114 not work, you ask? Most often, interruptions occur due to temperature changes and humid weather. The first signs are unclear operation of the lock, jamming or incomplete operation.

Below we list the top major breakdowns:

1. Relay fault. In this case, you can get by with “little expense”; buying and replacing the part is as simple as shelling pears.

2. Closures This option is already more problematic than the previous one. Now we need a multimeter, we need to use it to test the wiring.
3. Electrical wiring fault. Here we are talking about breaks and insulation violations. A thorough inspection is required.
4. Active interference from “L-shaped” springs during traction operation. This malfunction, or rather a flaw, lies in the fact that the spring, which helps the lock mechanism move, over time creates obstacles to free movement. As a result, problems arise with the operation of the central locking system. The solution to the problem is simple and at the same time ingenious - remove all the springs from 4 doors. From the point of view of the performance of the mechanism, the absence of a spring will not affect its operation; on the contrary, the central lock will work with renewed vigor!
5. Failure of the central locking unit. This situation is not very common, but it does happen. You can check the block using a familiar multimeter. All you need to do is measure the voltage at the CBZ contacts. In the absence of a measuring device, it is possible to resort to the following method: the voltage from the negative terminal of the battery must be transferred to the contacts of the gear motor, after which you can observe the operation of the unit.
6. Malfunction of the VAZ 2114 central locking fuse. The problem can be caused by the operation of the unit under conditions of increased loads (for example, when the movement of the core is difficult). A fairly common occurrence among fans of all kinds of tuning, changing the stock door trims. As a result of such modifications, the gap under the walker turns out to be smaller in diameter than the factory one. As a result, the operation of the central locking system becomes more difficult, and the load on the drive and electrics in general increases. Therefore, it is not surprising that the fuse blows.
7. The central locking activator is faulty. One of the most vulnerable elements in the system. Failure is promoted by exposure to moisture, oxidation, and mechanical wear due to friction.

Theory

Before starting the installation, I want to warn you about the characteristics of my particular VAZ 2114 car (2006 model year, “Lux” equipment, the wiring under the dashboard is numbered as “VAZ 2115-...”), since I myself, from personal experience, have seen “four” and “tags” of the same year of manufacture, the same configuration, but with completely different wiring (I assume that this was due to different supplies of wiring to the conveyor).

After looking at the information on the Internet, I came to the conclusion that the overwhelming number of people install the control unit according to the incorrect diagram “D”, from the instructions, which will not fit the Samar family (VAZ 2108/09/99/13/14/15) , since the opening and closing of doors (or rather, the supply of a signal to the BUDU (Door Lock Control Unit)) in Samara is controlled by a “minus”, and according to the “D” scheme, control occurs by supplying a “plus” to the BUDU. As I found out, this scheme only works when the standard BUDU is removed and the BU works every other time and only one button on the control key works. In my case, when connecting circuit “D” (I tried to connect it together with the BUBD), I burned several fuses and started looking for another connection method.

Connecting an alarm system to the central locking - the main difficulties of the procedure

Nowadays, motorists have the opportunity to choose any type of security system for their vehicle, focusing on their own needs and wishes.

But choosing the “best” alarm system is half the battle. It still needs to be properly mounted and connected to the central locking.

Specific connection points for the security device are selected depending on the following factors:

• type of alarm system purchased (without remote control or with one);
• model of the vehicle on which the system is planned to be installed;
• location of the main security mechanism (block).

You can determine the connection points for an alarm with automatic start using the passport of the purchased device, a lamp probe or a voltmeter . In addition, you will need a vehicle wiring diagram. It is with its help that you can find the elements to which the alarm will be connected.

Before starting work, you need to decide on the type of central locking (CL) of your car. The most common types of central locks are:

• driven by positive impulse;
• controlled by negative impulse;
• with variable polarity.

Installing a central lock on a VAZ 2109 car

On the VAZ 2109, installation of the central lock is carried out in two stages:

• Front door lock device.
• Installation of wiring and connection of the main central locking.

Advice: Before carrying out work, it is necessary to change the drive connection wires for the window regulator.

To carry out the work you will need:

• Upholstery holder.
• Corrugated tube.
• Set of central locking elements.
• Knife terminals.
• Set of wires.
• Heat-shrinkable cambric.

It is advisable to install the VAZ 21093 central locking control unit in a garage or other place where no one will interfere. Instructions for doing the work yourself:

• The screws securing the handle are unscrewed, which is then removed.
• The handle lining responsible for opening the door is removed.
• All operations are repeated for the other door.
• The upholstery is removed. To do this, pry it off from all sides of the doors with a screwdriver.
• The installation location of the locks is determined.

Tip: The best installation location is the lower left corner. In this case, when lowering the glass, it does not touch the lock and does not interfere with the driver.

• Several holes are made.
• The lock is screwed on with self-tapping screws.
• The same actions are performed with the other door.

After carrying out these preparatory work, you can begin installing the door lock rods to the central locking rod:

Tip: The stroke of the lock rod is slightly greater than the length of the central lock rod, resulting in a difference of approximately six millimeters. Therefore, you need to combine the centers of thrust and there will be no problems. Sometimes the thrust from all sides does not reach by about two millimeters. In this case, you need to tighten the screws very firmly, but so as not to damage their heads.

• The dashboard is removed. For this:
• Several points are pierced near the mounting screws.
• The wires are located inside.
• The places of their passage are determined.
• Here, new wires are laid for the central locking, after getting rid of the old elements.
• Connecting the lock wires. In this case, the wire is insulated and pulled into the door.
• After wiring the wires, they are pushed through the holes located under the dashboard.
• A pass-through tube is installed into the rack on each side. Care must be taken to ensure that the tube is not damaged.
• All wires are connected to the connectors.
• The fuse is attached.
• The connector and the central locking unit are connected.
• All wires are hidden under the dashboard.
• The place where to connect the VAZ 2109 central locking in the car body is determined.

Tip: If the wire is not enough, it needs to be extended.

Why central locking now?

But still, installing a central lock makes sense: primarily for ergonomic reasons. Perhaps, any car enthusiast will agree that opening car doors by pressing one button on the key fob that is in your hands is much easier than fumbling with the unruly locks of a car produced in the back streets of the domestic automaker VAZ. In fact, this is the main problem and the main motivation of the owner of the “nine” to please himself with such a modification of his car.

As a result, the central lock will not only facilitate the process of opening the doors of a car, which is famous for the fact that very low-quality locks were often installed on it. They jammed at the most inopportune moment. This device will also make it possible to open the car regardless of the season. Yes, now in winter, at a time when all Lada locks are covered with a thin but impenetrable crust of ice, you no longer have to warm them with all possible means at hand.

You will be able to forget forever about the kettle of boiling water and the “magic” spells that often accompanied the process of opening locks in the cold.

Car alarm installation

Before purchasing, study all kinds of models, select the ones that are suitable for the VAZ-2109.

There are quite a lot of them, they differ in functionality and depending on whether you have a carburetor or an injector installed.

Check for these features:

• turning on the engine from the key fob;
• remote engine stop;
• mechanical impact indicator;
• communication and communication signaling device;
• turning on the alarm whenever the car is opened;
• possibility of canceling the program.

Instructions are included with each device. If you install it yourself, you need to familiarize yourself with it carefully. Even after a high-quality self-installation, there may still be some nuances. For example, a monolithic alarm system is easier to install, mobile, it will not be difficult to install it anywhere on the car, but it is easier to hack if it is stolen.

To install this device, you will need the following devices and tools: a voltage meter with limit data up to 12 V, insulation, Phillips and regular screwdrivers, a wire stripper, a soldering iron, single-core and stranded wires (length up to 10 meters).

Installation instructions

To independently integrate the central lock into a VAZ 2109 car, you will need:

• installation kit;
• insulating tape;
• s-shaped corrugations for wiring;
• wire cutters;
• screwdriver or drill;
• screwdriver;
• plastic clamps.

Tools and materials in the photo

Some important points

• Before installing the central locking system, be sure to remove the terminals from the battery. This will help avoid accidental short circuits during installation and protect the vehicle's electronic devices.
• The central locking control unit is located under the front panel. This will make it easier to connect to the electrical network.
• An electric drive with four outputs is installed in the driver's door.
• Before installation, consider how the wiring will go to the rear right door. Most often it is placed under the carpet and secured with plastic clamps.