VAZ 2109: central locking - purpose, principle of operation, installation method
The VAZ 2109 central locking unit ensures the safety of the vehicle, which is one of the most important factors for the driver. There are different security anti-theft systems for the safety of the car.
An important role belongs to the installation of door locks. The main purpose of the device is the simultaneous closing and opening of the doors in the car.
In addition, on a VAZ 2109 car, central locks control the covers of the luggage compartment and the fuel tank.
Features of the central lock
The central lock is a system that combines:
- On the VAZ 2109, the central locking control unit or relay. Its purpose is to transmit to the gearmotors, which are located in the niches of the doors, a control signal for the lock mechanism.
This is an electronic device, which is a board located in a plastic case. There are eyelets on the case with which the device is fixed in place of installation. Six relay contacts are used to connect the control connector. - A set of input sensors, which are of two types: limit switches for car doors and microswitches located in the lock structure (“mikriks”). The first captures the current position of the car door and sends the desired signal to the lock control unit, the “mics” capture the current location of the main structural elements of the lock: the central locking mechanism and cams.
- Actuators, they are responsible for opening / closing locks. Their design includes metal rods connected to the rear door rod.
- To open the car, a key fob connected to the control unit is used.
How does the driver affect the device:
- The owner of the car inserts the key into .
- Turns it.
- The signal to the relay is given by special contacts.
- Voltage is supplied to the actuators.
- After activating the system, all the lock buttons are slightly "recessed".
- In case of an emergency, automatic opening is provided for all doors.
Tip: In order to reduce the cost of installing a remote control, it is enough to install such a system only on the driver's door, which is used the most.
Benefits of installing a central lock
The main advantages of remote control are:
- When you start the remote security mode, the doors automatically close.
- The safety of the car is increased, independent of the driver.
- It is possible to set the automatic closing of the doors.
- If an outsider tries to open the door, it will be blocked.
- If the ignition is switched on and the doors are closed, the safety of passengers is noticeably increased.
- Possibility of automatic blocking of all doors if the speed has increased above the permissible.
- The system can be activated with the car's ignition switched on or off.
Tip: When combining the alarm and the central lock, the reliability of the remote control of the door operation and the safety of the car increase.
Installing a central lock on a VAZ 2109 car
On the VAZ 2109, the installation of the central lock is carried out in two stages:
- Locking device for the front doors.
- Wiring and connection of the main central lock.
Tip: Before carrying out work, it is necessary to change the wires for connecting the drive for the power window.
To carry out the work you will need:
- Upholstery holder.
- The tube is corrugated.
- Set of elements of the central lock.
- Knife terminals.
- A set of wires.
- Heat shrink tubing.
It is advisable to mount the central locking control unit VAZ 21093 in a garage or in another place where no one will interfere.
Do-it-yourself instructions:
- The screws fixing 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 comes off. To do this, it is hooked on all sides of the doors with a screwdriver.
- The place of installation of locks is determined.
Tip: The best installation location is the bottom left corner. In this case, when the glass is lowered, it does not touch the lock and does not interfere with the driver.
- Several holes are made.
- The lock is screwed on with screws.
- The same actions are performed with the other door.
After carrying out these preparatory work, you can proceed with the installation of the door lock rods to the central lock rod:
Tip: The stroke of the lock rod is slightly longer than the length of the central lock rod, resulting in a difference of about 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 about two millimeters. In this case, you need to tighten the screws very tightly, but so as not to damage their heads.
- Removed. For this:
- Several points are pierced near the fastening screws.
- There are wires inside.
- Their places of passage are determined.
- New wires are also held here for the central lock, after getting rid of the old elements.
- Connecting the wires of the lock. In this case, the wire is insulated and pulled through the door.
- After the wires are laid, they are pushed through the holes located under the dashboard.
- A lead-through tube is installed in the rack on each side. Care must be taken not to damage the tube.
- All wires are connected to the connectors.
- The fuse is attached.
- The connector and the central locking unit are connected.
- All wires are removed under the dashboard.
- The place is determined where to connect the central locking VAZ 2109 in the car body.
Tip: If the wire is not enough, it needs to be extended.
Central lock repair
There are times when problems arise in the central lock:
- The driver closes the car, and the doors open immediately after closing.
In this case, the stem is almost completely retracted, and the limit switch has a borderline state. He sends a command to the central locking module, and all the doors are also closed, but due to a slight deformation of the mechanism or door, from impact or other reasons, the limit switch switches back and the central locking opens.
Such a defect manifests itself when the door is closed, the standard mechanism springs the thrust and, accordingly, the stem goes to the opposite position, which causes the door to open again.
- The central lock can only work in one direction.
The reason may be insufficient fixation on the screw activator rod.
- There is a rattling when opening / closing the central lock, and there is no movement of the stem.
The reason may lie in the breakage of the teeth on the plastic gear, which transmits rotation to the teeth of the rod through the motor shaft.
- In the activator the motor is made of brass. With prolonged use, it breaks the gear hole, and over time it will scroll on the shaft.
- The central lock does not work on the VAZ 2109, and the movement of the stem can be done by hand. It is possible to work the lock through time. This most likely indicates a failure of the central locking motor. The photo shows an exploded view of the activator motor.
Why is the central locking motor not working?
So:
- The winding broke near one of the poles.
- Supply voltage is applied for more than one second. In this case, the collector heats up and at the end of the movement, a very hot collector melts the plastic under its plates.
The spring-loaded brushes begin to connect, and the molten plastic is squeezed out. After the brushes are connected, the central locking power fuse may burn out and the activator rod will stop moving even by hand. - The motor overheats due to prolonged opening / closing for a short period of time - up to 40 seconds.
- Collector plates worn out. This is indicated not by constant, but by periodic (once) operation of the central lock. In this case, the grease may have thickened, or the plastic has been squeezed out from under the plates upward, due to the long pulse duration, which leads to the collector burnout.
What is the central locking scheme for a VAZ 2109 car, how it works can be clearly seen in the video.
There are a lot of reasons why the central locking does not work. Some are related to the climatic features of the area where the car is operated, others occur after improper installation or adjustment of the lock.
In any case, the installation of a central lock helps the driver to keep the car from unauthorized intrusions.
