Rear door lock Niva Chevrolet device

You have found information about the rear right door lock of a Chevrolet Niva - go ahead, we are waiting for you. Your personal assistant in DIY car repairs. How to repair a car yourself at home. We will help you with repairs and repair the car yourself. We know how to restore a car with minimal investment. I have attached video instructions.

Category: Do-it-yourself repairs

Laughter on topic: A drunken man barely squeezes into a very crowded bus. At the sight and smell of it, everyone turns away and is indignant: Why couldn’t you get on an empty bus? Answer: WELL GUYS, I CAN’T, I’M FALLING IN IT.

Published by Admin: at the request of Friedrich

Car owner criticism: Reliability. Dynamics. Originality.

Initially, a Chevrolet Niva is equipped with a central lock that can remotely control opening. For this purpose, each of the 5 doors has a special device - an actuator. It is responsible for removing the lock when receiving a signal from the alarm system.

But in practice, most problems with opening the rear door are not at all related to the operation of electronic components.

In 95% of cases the problem is related to mechanical parts. This can be either the lock itself or the rods located inside. In some cases, this may be due to the fact that the Chevrolet Niva door seal freezes on a recently washed car. But in this case it is easy to determine the source of the problem, so further we will consider situations in which the problem mainly arises with the operation of the lock.

The traction is broken.

Basically, the rod can bend if it was assembled incorrectly. The problem can also appear if the car is often used in off-road conditions and dirt gets into the cavity. This can happen if the plastic film peels off from the door frame. In this case, dust may accumulate inside it.

During movement, dust settles not only at the bottom of the cavity, but also on all components, including the levers. After the car gets caught in the rain or washed, all the dust turns into dirt, firmly settling on the insides. As it accumulates, it leads to a decrease in the lock stroke, and at the moment when the passenger tries to open the door, great efforts have to be made. Because of this, the rod begins to bend over time. And at some point its progress is not enough to unlock it. Even after it is straightened, the integrity of the system will already be compromised and components will need to be replaced.

In this situation, complete replacement of the door lock components, or dismantling, lubricating all components and cleaning the lock can help. This must be done as early as possible, even if the slightest problem arises, so that the Niva Chevrolet door handle does not become completely blocked.

The rear door device is quite simple and does not contain complex mechanisms. The lock used is the same as on most AvtoVAZ models. The only difference is that its locking and unlocking is actuated by an actuator. Sometimes they fail and then it becomes necessary to open them manually.

The following will help you avoid such an unpleasant situation:

Spare set of keys. Don’t be lazy, just take it and make a duplicate - it won’t cost you a lot, but the benefits from the duplicate will be enormous. You won't have to worry about losing your keys. This happens to everyone, and no one is protected from losing vigilance for a while, and as a result, the keys.
Decorate your keys with a weighty keychain. It will make them much heavier and you will feel their weight in your pocket. And when you suddenly lose your keys, you will immediately feel it, or even hear them fall on the asphalt, grass, or whatever.
The car key and alarm key fob can also be separated into separate bundles. The likelihood that you will lose both at once is much lower.

It often happens that you simply forget your keys in the car, close the door, it latches, and you go about your business. In this case, we recommend that you simply always be careful and check that you have the keys.

Spring failure.

Basically, the problem of lock failure lies in the fact that the tendrils of the spring break off, which loads the rear door lock lever. This occurs due to the use of low-quality steel in the production of the part or violations of operating conditions. In any case, such a breakdown leads to the fact that one of the lock levers begins to move in a random direction and it is impossible to predict whether the lock will open at the moment or not. There are even situations when the rear door lock of a Niva Chevrolet can open while driving. Therefore, you should not wait for unpleasant situations to arise and carry out repairs immediately if any problems arise with the lock.

Tools and Supplies

To get to the handle fastening bolts, it is necessary to dismantle the door trim. During the renovation process, removal and installation of cladding remain the most labor-intensive operations. A plastic film is installed under the door card, which protects the insides from dust.

It is recommended not to remove the boot completely; just peel off the upper left corner and unscrew the film to the middle.

For the work you will need the following materials and tools:

Castle repair.

Before starting repairs, the door trim on the Niva Chevrolet must be removed. The door card can be removed even after the door is completely locked.

After this, the window lifter handle is removed. To do this, use a flat-head screwdriver to bend it and pull the latch up.
The decorative cover of the handle is removed. It is held on by latches; to disconnect it, you only need to pull it towards yourself with force, after prying it off with a flat-head screwdriver.
The door card itself is held on pistons in the center, top and bottom of the door. They can also be snapped off by prying them off with a screwdriver.

Procedure for dismantling door trim

Instructions for removing the upholstery:

Use a knife to remove the plugs.
Unscrew the screws with a flat screwdriver.
Remove the cover.
Disable the latches.
Remove the side mirror adjustment lever.
Unfasten the top row of clips. Pull out the panel.
Disconnect the electrical wiring wires: speakers, power windows.
Remove the fasteners from the closing device body.
Remove the bottom row of pistons, after which you will have access to the rod.

Now you can diagnose, repair or replace parts. Reassembly is performed in a similar manner.

Screwdriver Set;
awl;
key to 8;
rags;
knife.

Use a knife to remove the plugs.
Unscrew the screws with a flat screwdriver.
Remove the cover.
Disable the latches.
Remove the side mirror adjustment lever.
Unfasten the top row of clips. Pull out the panel.
Disconnect the electrical wiring wires: speakers, power windows.
Remove the fasteners from the closing device body.
Remove the bottom row of pistons, after which you will have access to the rod.

At first glance, it may seem that dismantling the door trim is a rather complicated task, but having sufficient information, it becomes clear that this is not the case, you just need to be quite careful and be careful when carrying out such work.

In order to dismantle the casing, the following procedure must be followed:

In total, there are eight fixation bolts on one Niva Chevrolet door, and some of them are hidden behind decorative plugs.
The presence of all bolts is indicated by arrows.
First of all, it is necessary to dismantle the two plugs that are located at the door handle. It is most convenient to remove them using sharp and thin metal.
When the bolts underneath are unscrewed, remove the two open bolts located directly in the direction of the rack.
We unscrew three more fasteners from the bottom of the doors, they are also not closed by anything.
Lastly, we remove the bolt, which is located under the door handle. To do this, we pull it towards ourselves and unscrew it.
When nothing holds the upholstery, all that remains is to remove it from the “bugs”. To do this, we run a thick screwdriver around the perimeter of the door, pressing the edges a few centimeters, after which the door itself will easily move out of place.

Full size uncoupled Next, use a thin screwdriver to unhook the rod on the door soldier and take it out. We also pay attention to the lock actuator rod (red arrow) - it doesn’t interfere with disassembling, but during reassembly it will need to be put back as it was)

None To disassemble the lock, unscrew 3 self-tapping screws (the red arrow is a pin that comes out a bit tightly during disassembly).

Full size Remove the cover to the side Now you can pull out the microphone - here it is, the brat) By the way, the microphone is normally closed, when the doors are closed - the microphone bracket is pressed and the contacts open) We disassemble it with a thin screwdriver, but CAREFULLY - there are small parts inside!

Full size Giblets of the mikrik Using tweezers, carefully remove the “spring” and remove the “contact”

Full size Carbon deposits on the contact pad

Cleaned it out with a thin file.

Full size We put the tabs in place when assembling

3) The pull rods on the lock cylinder and on the outer handle are put on quite tightly. Smooth roads and working mikriks to everyone).

At the start of production, the Chevrolet Niva was very different from its predecessors. A modern interior, convenient arrangement of instruments on the panel and many other innovations greatly distinguished it and made it more comfortable. But the most important difference was the transformation of the body from a three-door to a five-door.

But any equipment is prone to breakdowns, so sometimes the Chevrolet Niva Niva door handle or another part responsible for the normal functioning of the door may fail. This creates many problems and reduces the usability of the car.

Unlocking the lock.

To open a locked door, you need to pull the plastic tongue of the actuator. You can also move the lock latch itself. After it is unlocked, you can remove the lock, but you must disconnect the battery terminals. The lock itself is held in place with screws at the end.

After they are unscrewed, you need to use a screwdriver to disconnect the rods and disconnect the terminals. Then you can pull the lock out of the case. Once it is pulled out, it is much easier to carry out an external inspection to determine the exact cause of the problem. If in doubt, it is better to immediately replace the part with a new one that will definitely be in working order.

Back door to the field

Eliminating play in Shevik door handles

The handles on the doors had been dangling for a long time, but when yesterday I saw how far the right front handle had moved, I decided to go through them all.

First, let's disassemble the front door. I already wrote how to do this in the topic about installing front tweeters. Next, we bend the polyethylene to access the internal fastening of the handle:

I thought that it was he who had loosened, but it turned out to be properly tightened. Therefore, the handle had to be disassembled further)) The second screw securing the handle on the front door is located here:

It is not necessary to remove the handle, just put it in this position:

It was this screw in the front of the handle that was loosened:

Just in case, I unscrewed the screw and saw that the silumin tongue had been broken off. To calm things down, I glued it with superglue)) Although I understand that this won’t last long:

If the tongue is broken, then the front part of the handle is held only by a self-tapping screw. By the way, they were broken off on all the doors)) After assembly, the play disappeared.

Why doesn't the back door of a Niva Chevrolet open?

The Chevrolet Niva is equipped with a standard central lock; therefore, each of the five doors has an actuator that unlocks the lock when the central device is activated.

However, as practice shows, electronics are not at all involved in problems with locks.

In 99% of cases, the problem is still in the mechanics, either in the lock itself, or in damage to the rods. We will not consider cases where the door freezes to the body; this is an exception, but most often the owners are let down by the lock.

Broken lock rod (rod is bent)

The rear door lock rod is marked with an arrow.

There are often cases when the lock rods bend not due to improper assembly (although this is possible), but due to the banal entry of dirt into the door cavity.

It all happens something like this: the protective polyethylene film can peel off from the door frame in some places, and because of this, dust gets into the door cavity. Everything would be fine, but dust accumulates not only at the bottom of the cavity, but also on the levers of the lock itself. One fine moment we go to the car wash or get caught in a heavy downpour, the dust turns into dirt and limits the working strokes of the lock.

Design features

The Niva's back door, like the others, is connected to the central alarm unit. The door opening process is controlled by an actuator. The equipment removes the lock when receiving a corresponding signal from the car’s security system.

In 90% of cases, when the door does not open either from the outside or from the inside, this indicates a breakdown of the mechanical part. If the trunk does not open, the problem may be a broken spring in the locking mechanism.

In winter, it sometimes happens that after washing the car, water remains in the rubber seals of the doorway, it quickly freezes and prevents it from opening. Car mechanics identify two main failures in the mechanical part of the lock:

deformation of the lock rod;
a malfunction of the latching pawl mechanism, when the handle turns, but the lock does not open from the inside.

Removing the rear door lock on a Chevrolet Niva for repairs

You will have to remove the rear door trim.

Even if the door no longer opens, you can easily get to the lock and unlock it, and then remove it and repair it. This is done like this:

The rear door door card is removed even when the door is locked. First, unscrew the two screws from the bottom of the door card.
Remove the window handle by bending the handle with a flat screwdriver and pulling the latch upward.
Unscrew the screw securing the decorative trim under the door handle, pulling the handle towards you.
The door card is held on by six pistons - two at the bottom, two at the center and two at the top. They snap off if you pry them with a long screwdriver. The door card can now be removed.

The decorative card has been removed.

Video about removing the lock on a Niva Chevrolet

Opening the door

The lock can be unlocked by pulling the plastic tab of the actuator or another lever; using a long screwdriver, you can move the lock latch itself.

When the door has opened, you can remove the lock, but before that you need to remove the negative terminal from the battery. The lock is held on by fastening screws at the end of the door.

Trunk door lock.

After removing them with a long screwdriver, you need to remove the drive rods, disconnect the terminal blocks and remove the lock from the door cavity along with the actuator. After this, when the lock is in hand, the reason will become visible. In extreme cases, the lock can be replaced. Good luck to everyone and obedient locks!

Trying to open the door with the handle, we make more and more effort, as a result of which the rod bends.

Recommendations

I just banged on the door handle, SAID OPEN and OH A MIRACLE! OPENED and still working properly!

Through the salon. Fold down the seats, remove the shelf and disassemble the trunk door trim. Someone has already written about this.

The hinge has probably moved, try to pull the handle, pressing on the door. And it would be nice to wash the lock.

The four-door body of the Niva Chevrolet, in comparison with the Niva 2121, looked like just a limousine. What a shame it is for Shnivy owners when this body turns into a three-door. What to do when the back door on a Chevrolet Niva does not open, we will consider the reasons and solutions to the situation right now.

Removing the limit switch from the Chevy Niva door lock

This way we remove the glass frame. Next, unscrew the filler plug and remove the neck trim of the tailgate glass washer reservoir. Carefully pry up the upholstery with a screwdriver and remove the pistons. During work there is a danger of damaging the painted surface.

There will not be a serious dent, but a scratch may still remain, so it is recommended to wrap the end of the screwdriver with insulating tape. The upholstery is put back in place in the reverse order.

If the pistons are damaged, they must be replaced with new ones. Let's move on to the tailgate lock drive.

The same screwdriver will come in handy during the process. The rear door door card is removed even when the door is locked. First, unscrew the two screws from the bottom of the door card. Remove the window handle by bending the handle with a flat screwdriver and pulling the latch upward.

Replacing the lock cylinder on a Chevrolet Niva

Unscrew the screw securing the decorative trim under the door handle, pulling the handle towards you. The door card is held on by six pistons - two at the bottom, two at the center and two at the top. They snap off if you pry them with a long screwdriver.

The door card can now be removed. Video about removing the lock on a Niva Chevrolet Opening the door The lock can be unlocked by pulling the plastic tongue of the actuator or another lever, using a long screwdriver, you can move the lock latch itself. When the door has opened, you can remove the lock, but before that you need to remove the negative terminal from the battery.

The lock is held on by fastening screws at the end of the door. After removing them with a long screwdriver, you need to remove the drive rods, disconnect the terminal blocks and remove the lock from the door cavity along with the actuator. After this, when the lock is in hand, the reason will become visible. In extreme cases, the lock can be replaced.

The window is Niva’s weak point

On many automobile forums dedicated to the Niva car, you can read information that their owners are periodically bothered by rear windows that randomly drop down. Of course, they do not open completely, but only a couple of centimeters, but sometimes this is quite enough.

If you delve into the design of the car, you will learn that the front windows are opened using an electric drive, but the rear windows are just the opposite - using a manual drive. This is their main weakness. When the rear windows shake well during a trip, they will definitely open a little.

When the car is just standing, you should constantly rock them up and down. Using similar maneuvers, we open the glass for ten to twenty minutes. During this time, as a rule, you will be able to move the glass down about ten centimeters, and this will allow you to stick your hand into the interior and lift the flag yourself. At this stage, you can finish the review of ways to open a Niva without a key, but we bring to your attention a few more interesting options:

using a tennis ball;
wires;
using a loop of regular rope.

Also interesting: Where is the Chevrolet Niva starter relay located?

Details about each of these methods

Obviously, you can watch videos on the Internet where professional car enthusiasts perform these procedures, showing everything by their own example. However, it is also worth paying attention to such a moment as what to do so that such situations do not occur at all. After all, it is better that you always have a backup option. Why solve problems if they can be eliminated altogether?

Details about each of these methods

Limit switches and their purpose, where they are located in different cars

People who had to deal with the process of independently installing an alarm on a car definitely had to deal with the word limit switch. The instructions say that certain wires must be connected to it. This detail is present on absolutely every old or new car, on the doors and hood of the Grant, Niva, Kalina, Skoda, Logan, Chevrolet, Lanos, Octavia, Sprinter and other vehicles. The operating principle of limit switches is very simple, and the devices themselves are quite small in size, inexpensive, and very easy to connect. They are necessary so that you can correctly open the doors, the hood, use the lighting, and for other purposes that involve the process of enabling or disabling functions.

How to find limit switches quickly and without any problems

Many people do not quite know where the limit switches are located in Kalina, Niva or other cars. But when you have to install an alarm, searching for them takes quite a lot of time. In order not to waste extra time on inspecting the interior of your own car, you should use the following tips:

These methods will help the car enthusiast find absolutely all limit switches if he needs to connect an alarm system or replace these switches with new devices. The limit switches are designed to make it easier for the driver to deal with different systems of the car, and it doesn’t matter whether it’s a domestic car - Niva, Kalina or foreign models, everything will be as comfortable as possible.

Limit switches are very small in size, are installed in many places on the car, and perform specific functions. These devices are designed for comfortable access to a functional range of certain vehicle systems and simplify the process of connecting an alarm system. Each limit switch is responsible for the operation of its zone, but they can be connected to the same wire. Connecting to different wires is no less common. Negative and positive limit switches are found in both foreign and domestic cars - the interiors of Niva, Viburnum and the external space of the car. They are easy to buy, you can replace them yourself, and every motorist can connect additional wires to them independently.

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Chevrolet Niva Manual

Chevrolet Niva Removing the tailgate lock

Disconnect the wire terminal from the negative terminal of the battery. Remove the tailgate trim (see Removing the tailgate trim).

Disconnect the electrical drive and trunk light switch connectors from the door wiring harness connectors.

Using a screwdriver... ...we disconnect the end of the lock switch rod from the door handle.

Using a screwdriver... ...we disconnect the door handle rod from the lock lever.

Using a Phillips screwdriver, unscrew the three screws securing the lock to the door...

Use a Phillips screwdriver to unscrew two self-tapping screws...

...and remove the electric locking drive. Install the lock in the reverse order.

Source

Plus and minus limit switches - what is their difference

End switches of different types differ little from each other, but are divided into positive and negative. Positive limit switches can be found quite rarely, but their presence in a car can be easily determined. To search for positive limit switches in Niva, Lanos, Chevrolet, Logan, Skoda Tour and others, you will need to perform the following actions:

Negative limit switches, reed switches or others, are present in almost all machines and there are quite a lot of them. Such a limit switch is shorted to ground when the door is opened. Limit switches of any type can be detected using a voltmeter. During installation and connection of the alarm system, this device will be extremely necessary.

You can always replace the end switch of a Niva, Grant, Kalina, Chevrolet, Octavia and other cars yourself. Limit switches can be bought at any car dealership and even on the market. The process is quite simple or connecting new end switches to the wires is done quickly.

What should be done?

Well, now for detailed instructions. You need to disassemble the trunk trim. To do this, first unscrew the top plastic of the brake light, then the side ones.

Having disassembled the plastic, you can remove the lower casing. This is what we need. To do this, grab it with your hands and sharply pull it towards you from the edge of the door. You can use a plastic interior repair tool to help. The main thing is to do everything sharply so as not to break the clips:

On the left is the door lock mechanism. Notice how much dust and dirt there is:

Now let's take a look at the mechanism of the larva:

In the photo it has been cleaned up a little, but that's not enough. Everything needs to be disassembled, thoroughly washed and cleaned. And then lubricate with grease or lithium grease. In addition, you need to wash everything inside the door.

It would be a good idea to remove the activator as well. There is no need to clean it, but you need to move it from one position to another to develop it. After this, assembly is performed in reverse order.

After this, the lock will lock and unlock again as before.

Source

Why connecting an alarm system to limit switches is an important process

Every car alarm, no matter what car it is installed in, is an important element that ensures the safety of the vehicle. For Niva, Grant, Kalina, Skoda, Chevrolet, Lanos, Octavia Tour, Logan and others, the connection diagram is almost the same. Many people cannot fit limit switches into the process of connecting an alarm system, but it is the connection to them that plays a very important role.

If you correctly connect the alarm wires to the limit switches, then the owner of a Niva, Kalina, Skoda, Logan, Chevrolet, Lanos, Octavia or other cars will be able to achieve the following effect:

The limit switches of different cars have their own specific connection to the central unit. There are options when all limit switches are combined into an integral system, and there are cases that suggest that a separate wire must lead to each limit switch. Depending on this feature, the level of complexity of connecting the alarm will depend. If the system operates on one wire, you can simply crash into it, but when each limit switch has its own separate wire, you need to make a separate alarm connection to each of them.