Step-by-step instructions for installing limit switches on doors in Lada Granta

The Lada Granta Liftback car in the “Standard” configuration is equipped with only one limit switch at the driver’s door. The remaining three doors have built-in rubber plugs.

The “Norma” configuration has a similar arrangement, but the owner can additionally install limit switches on the Grant Liftback independently. To do this, first remove the decorative inserts on the thresholds. Only the “Lux” configuration provides a full set of functional limit switches for four doors.

The operating principle is as follows:

• when the driver's door is activated, the limit switch contacts open, the indicator on the dashboard lights up, and the interior lighting turns on;
• When the remaining three doors are activated, only the interior lamp lights up.

Characteristics of door limit switches Grants

Apart from the driver's side, there are no door limit switches on the Lada Granta in other opening structures. There aren't even any buttons or standard wiring. The operation of these mechanisms determines the activation of the door open lamp, which lights up on the dashboard. Moreover, the interior light and car alarm react to the actions of the driver or passenger. The average cost of limit switches starts from 150 to 200 rubles. Article 1118-3710199 is the original number and its price is lower than its analogues. The Lada Granta has this device, but it all depends on the modification:

1. The “Norma” package implies the installation of this device in all door structures.
2. The “Standard” package does not imply the presence of limit switches on the seats. There they are replaced with plugs.
3. The “Lux” package will delight the buyer with a full set of sensors, even a rear one.

The activation sensor transmits information using light indicators.

Review of Manufacturer Prices

*prices are current as of 10/07/18.

The service life of factory rubber caps is limited, only 1.5 - 2 years. The reason lies in the low quality of materials. In winter, drivers often encounter freezing of the limit switch and hardening of the rubber cap. As a result, lighting activation is delayed. The central lock often blocks the doors due to unstable operation of the limit switch. There are several ways to troubleshoot the problem, which we will discuss below.

Installation of limit switches on Lada Granta

An activation sensor in all doors will provide additional comfort. To carry out the installation procedure, you will need special equipment and available materials: lubricant, rubber tips, screwdriver, rag.

Step-by-step algorithm of actions:

1. Remove the rubber tip.
2. Open the housing and remove the limit switch.
3. Remove the block with wires and disconnect.
4. Install a new sensor.
5. Reassemble.

After the basic steps, you need to check the functionality of the device. To connect the limit switch to the power circuit, you will need to connect two terminals: first “+” and then “-”.

If you need to replace the trunk limit switch, then the instructions are identical, you just need to open the trunk lid.

Vehicle configuration

Many Lada car owners are faced with factory defects. The modern Granta model was no exception. After purchasing a vehicle, the owner discovers flaws in the alarm system and interior lighting. At the first inspection of the Lada Grant, it turns out that either there is no standard wiring to the door limit switches, or there are no buttons at all.

Electromechanical devices complete a circuit when the door is opened. In this case, power is supplied to the interior lamp. At the same time, a pulse is sent to the signaling circuit. But AvtoVAZ decided to save on such “little things” as limit switches. Owners of a new car need to eliminate these shortcomings themselves.

There are differences in the alarm connection diagrams between different configurations of the VAZ 2190:

1. Standard. Instead of buttons, plastic plugs are inserted into the seats. There is no wiring in this modification.
2. Lada is normal. The limit switch is on the driver's door, and the remaining mounting holes have plugs, but wiring is installed.
3. VAZ 2190 luxury. There is a complete set of end elements in all doors. But only the driver's limit switch turns on the lighting lamp and the door open indicator on the dashboard. When the passenger door is opened, only the lights will come on.

Finalization of the scheme

The installation or modification scheme will require special equipment to test the electrical circuit. The first place on the list of accessories is a tester and a soldering iron. You will also need a screwdriver, additional wires, electrical tape and a new sensor. When connected, the driver can use the button in the threshold or the door lock contacts.

To do this, you first need to open the sensor housing with a screwdriver and remove the element, remove the block with wires using a screwdriver. Then replace the wire and solder. Insulate the ends and assemble the structure in reverse order. The process is carried out in parallel so that the process involves elements that go to the working positions of the door.

To measure the circuit resistance with a tester, you need to alternately press and release the spherical protrusion.

Installation in a lock

With the second option, the part will be placed not in the threshold, but at the top of the door. The wires are redirected to the lock. In this case, the function of the switch is taken over by the lock contacts. There are practically no difficulties in installation. Refining the circuit involves installing additional wiring and plugs for connections. During installation, it is necessary to protect the wires from abrasion using a corrugated hose or insulating tape. To implement this method, it is necessary to disassemble the lock and remove the locking bracket. The work is carried out in the following sequence:

1. Remove the lock.
2. Pull out the protective bracket.
3. Open the connector plugs.
4. Insert terminals.
5. Connect the wires on the driver's door side.

It should be remembered that installing and connecting switches on the Lada does not guarantee their stable operation. To eliminate possible problems, you need to know their causes and solutions.

Design solution to the problem

When replacing or connecting, you only need to restore the originally designed circuit. If no modifications are carried out, then the need to disassemble the locking mechanism and use insulating materials is immediately eliminated. Step-by-step instruction:

1. Open the hood.
2. Loosen the bolt connections and disassemble the device.
3. Unscrew the terminals.
4. Connect the wires from the battery.
5. Pull the limit switch out of the hole.
6. Pull out the switch.
7. Stretch the wires and connect them.
8. Bring the ends out through the hole.
   

   It is important that the wires are no shorter than ten centimeters.

9. Strip the wires.
10. Stretch the wires to the threshold to the installation site.

Connecting the signaling to the central locking system

Now we get to the most interesting part. The contacts of the signaling relay must be connected to the gap in the brown wire (see diagram in Chapter 1). Moreover, this will be required regardless of the configuration. Oddly enough, we won’t need power cables at all. And the task now looks like this: you need a two-wire signal cable connected to the break in the brown cord.

The moral here is:

1. If you were able to remove the central lock control unit, connect the cable to the break in the wire connected to pin “7” of the control unit;
2. If you have removed the door trim, then pull the cable out of it (from the point where the brown cord breaks).

It is clear that the second side of the cable must reach the relay connector of your alarm.

Option for the “Lux” package

So, this means that there is a button on the armrest in the cabin that allows you to lock the locks. From one of the contacts of the button, to which a “plus” is applied when pressed, you need to stretch the cord to the signaling unit. Nothing else is required, and you can connect the alarm according to the following scheme:

Troubleshooting

Drivers may encounter various types of malfunctions. Even though the sensor is protected, it is not as reliable as the manufacturers claim. In addition to silicone lubricant, other measures can be used:

1. Install the spring under the rubber cover. If this element is elastic, it will protect the mechanism even at very low temperatures.
2. Remove the protective caps for the winter, but there is a danger that the element will quickly become clogged with dust and dirt.
3. Treat with protective liquid.

Often drivers replace their original limit switch with a part from another manufacturer or install a boot. In this case, the body of the new element is inserted into the standard connector and secured with a self-tapping screw.

Hood switch

What is a hood switch? This is still the same rod switch, except that the rod is longer than in the doors or trunk. Since the hood end is located on the front frame, the distance to the hood is quite large, which is why it is necessary to use a long rod.

This is the most rarely installed standard limit switch. On cars without a standard alarm system, it can be used by the factory only for the engine compartment lamp, which is offhand only remembered from the VAZ “eighth” family. Therefore, these alarm switches have to be connected independently, and therefore at least one limit switch is always included in the security systems.

But it also happens the other way around: for example, on Renault Megane 3 and Fluence for the Russian market it is standard in all trim levels except the minimum one, and is even built into the hood latch. And there are even wires going to it... but it’s impossible to find them in the cabin, because they remain under the hood, not connected anywhere. When installing an alarm, of course, you don’t have to install your limit switch, but you still have to run the wires under the hood.

This alarm switch will be the most problematic: water and dirt will get under the edge of the hood, causing corrosion, or failure of the switch, or false alarms. Therefore, you need to carefully select the location, if possible installing the limit switch in the cleanest available location.

How to extend service life

Craftsmen are constantly coming up with new ways to extend the service life of factory elements. Some people put coins under the rubber band, fasten the parts with tape, or insert washers. To prevent the switch from freezing or becoming deformed, there are several effective techniques to consider:

1. Spring insert.
2. Replacing standard caps with elements from foreign manufacturers.
3. Silicone Grease.

You should not assume that these actions will grant immortality to the limit switch, but these measures will significantly increase its service life.

Reviews

Conclusion Limit switches on a car should always be in good working order. Provided proper maintenance and lubrication, the service life is at least two years. It is necessary to regularly analyze the condition of the limit switches in order to notice and prevent malfunctions in time. You should also adhere to the operating instructions.

What's behind this name?

This is the common name for a limit switch. In it, two contacts are connected or separated from each other by means of a movable rod, but thanks to the return spring, they are not fixed. When not pressed, the contacts are closed. As soon as a certain force is applied to the limit switch rod (for example, when closing a door), they open and the electrical circuit is broken.

Visually, the part is a small switch, the task of which is to transmit a signal from it through wires to the corresponding control system when closing and opening contacts.

In the early releases of VAZ models, the weak point was the poor location of the door limit switches - in its slam. They were constantly exposed to the environment and often failed. Subsequently, modifications were carried out on Lada Kalina Cross station wagon, Lada Xray hatchback, etc. The parts began to be installed inside the door - in the lock, which is well protected.

Purpose in different cars

Without the participation of limit switches in a car, even such a process as opening and closing doors, hood or trunk is not complete. If there is an unauthorized attempt to open them, the security alarm is immediately triggered, which is connected to the corresponding parts through certain wires.

Without the help of a switch, the lamp inside the car will not automatically turn on at night, the control sensor will not work, etc. The trunk lighting will not turn on when it is opened. The brake lights will not light up when you press the brake pedal if the corresponding part – the “frog” – is faulty.

The units vary in shape and installation location depending on the make of the car. The door elements of many cars are located in the door opening (slam). It’s just impossible to see where the door switches are located on Kalina, since the part is hidden in the door lock.