Where are the door ends? Connection of door limit switches

In simple terms, the door end is a button, at the pressure of the moving object, an action entirely dependent on the actuator takes place . It can be found in many places, including in a car. Their application is unlimited and necessary for a large number of devices.

Function of limit switches

The action of this button is that when the doors are open, a special symbol is lit on the panel. In the event that, when arming the alarm, the door is not closed or closed not completely, that is, the button-end is open, then the "signal" will necessarily notify you about it.

In some models of cars in case of finding keys in the ignition lock with an open driver's door, it is impossible to lower the door lock on it, and the automation will immediately lift all the blockers. This will help to avoid such a common situation, such as accidental slamming of keys in the castle. The limit switches work for both opening and closing.

If you disable the limit switches, the open door indication will stop working. Then there may be problems with the alarm. In addition, there are situations where you need light in the trunk or salon.

How do I find the endpoints of doors?

If you do not know where the end of the door is, then start their search should be made by the control or "teshka." From the door end switches the signals are removed - the button principle. This is done to protect the car alarm along the perimeter of the car. When the door is open, the limit switch is not clamped, it is free, and on its wire there is plus or minus. But it happens very rarely.

First of all, you need to find a wire whose polarity changes and appears either plus or minus when you close or open the door.

In most modern cars there is a corresponding lamp on the instrument panel that lights up when the door is opened. For the body of the car you need to hook the crocodiles of the control, and it is necessary to pierce wires with a sting and watch what the control lamp shows. The main thing here is to leave only one door open.

As soon as the control lamp turns green, you need to click on the end of the unclosed door or completely close it. If the lamp went out or turned red, then we found the right wire.

In order to make sure that all the doors are connected in one wire, it is necessary, after leaving the control on this wire, alternately open all the doors. If the control lamp does not respond to the continuity of the remaining doors, then this indicates that in this car all the door ends are not connected, and it is necessary to find the same wires remaining from each door in the same way. As a rule, the end of the driver's door and the passenger one are unconnected.

Troubleshooting that occurs with door stops

There are often cases when the end of the door does not work. There can be a lot of reasons for this, including dusting, clogging and dirt, oxidation, or because of the ingress of moisture inside during the cold season, he simply froze.

The fault in this case lies only on the owner of the car, which because of inattention in time could not notice the non-working door endings. After all, the control of their work in each car is very clear and it is difficult to notice the non-working condition.

But the solution to this problem today is quite simple - a sealed anther, which completely closes the button and does not allow dust, dirt and moisture into this mechanism.

Before you begin to install an anther, it is necessary to pierce the crosswise notch on the inside of the anvil in the place of attachment of the end piece. After that, you need to install the screw into the hole of the button, then put on the dust cover and insert the screwdriver through the puncture, fix it to the body. This method surprises with its reliability, simplicity and accessibility.

How to set the alarm?

Connecting the door end to the alarm - the procedure is not too complicated. When the door is opened, the limit switch closes the black and white wire to ground, and its presence on this wire is the signal for opening the door. In the main number of alarms, this input is available and is indicated as "negative door trigger".

But if your chisel is equipped with an APS-4 immobilizer and an injection engine, then the above procedure will not be enough. In addition, you will need to put the car under guard after paying off the "polite illumination" of the interior lighting or in the alarm system, to include the function (in the event that it is available) of the "alarm delay". All described methods are quite acceptable for use.

End doors of VAZ 2110

The first sign of non-working door limiters is the fact that the light does not come on when the door is opened, and the alarm does not go to the guard. This problem is most typical for the VAZ of the tenth generation.

The door ends of the VAZ 2110 fail almost every three years. To avoid such problems, it is necessary to sandpaper these details with sandpaper every year. In addition, for durability (against oxidation), you can treat their VD-40, and also install anthers.

Problems with the endpoints

The most common problem that can be encountered by the door end stops is the wrong adjustment. The cause of such a breakdown may be an unjustifiably high installation or too small a stroke of this part. If the alarm is false, natural temperature deformations of the trunk or hood cover appear. And in the case of a small turn of the end-piece, dirt and moisture can get into the gap between the contacts, which also provokes false alarms.

Another problem may be the wrong place to install these parts.

Also, the door ends can quickly become corrosion and oxidize. Through the thread of the interior lamp bulb, the terminal is supplied to the terminal or the alarm is activated to prevent the false alarms from reaching the positive potential. In this case, if condensate gets on the contacts, a leakage of electric current of a weak degree occurs, which will not be enough to trigger the alarm or ignite the interior lamp. But for this electrochemical reaction, like oxidation-decomposition, there is enough metal. Some time later, such a stop will not work.