DIY vaz 2109 ignition lock repair

In detail: DIY repair of a vaz 2109 ignition lock from a real master for the site my.housecope.com.

Often it was necessary to see the owners of the VAZ 2109, who, when the ignition lock failed, brought the wires to the button and then used it to constantly start the engine. Of course, this is a way out for a while, but it's not worth driving like that all the time, it's better to replace the lock, since its price is not so high - about 700 rubles.

As for the tool, we need the following:

But before proceeding with this task, you must first remove the steering column shroud. After that, use the head to unscrew the two fastening bolts that tighten the clamp of the ignition lock:

And then disconnect the two parts of the clamp so that they disengage with each other, as can be clearly seen in the photo:

And now you can remove the lock from the steering column by lowering it down:

Then we disconnect the plugs with wires, one of which is shown below - already disconnected:

And it remains to disconnect one more plug, which is with a large connector, and for this you have to stick your hand a little under the panel to get to it:

As a result, we get the following picture:

As you can see, the ignition lock on VAZ 2109-2108 cars is not so difficult to remove, and the installation is not particularly different, only it happens in the reverse order.

The VAZ 2109 ignition lock is a very important and at the same time very capricious mechanism of a car. And in today's article we will try to make out its importance and capriciousness, i.e. its malfunction. The ignition switch is used to supply voltage to the electrical circuits, depending on the location of the key. The castle consists of 2 parts. These are mechanical and electrical parts.

Video (click to play).

As already written, in our nine, the ignition switch is a very important mechanism. Almost all the electrics of the car pass through it. Only a few devices can work without the ignition switch and these are:

5. Backlight number plate.

This is necessary so that when stopping on a highway or in a city in an unlit place, we do not need to turn on the ignition to be noticed.

Lighting locks on the VAZ 2109 can be of different designs. There are 2 samples, these are: new and old. The new one differs from the old one, only in the absence of a relay, a shortened key and three key positions instead of four.

2. Ignition switch connector

I - Ignition. All devices of the electrical circuit are working.

II - Starter. Starts to turn the starter, the dipped headlights are turned off.

III - Parking. All devices work as in the ignition position.

The most common problem of the lock when igniting is its working off and jamming. With such signs, you must immediately change the entire ignition lock, because in case of jamming, you can simply burn the starter and then the repair will be in the price of the starter. Another common problem is contact group failure. In this case, several devices fail at once. For example, the dipped headlights, stove, cigarette lighter, rear window heater stopped working right away. Replacing the contact group with a new one, everything worked right away.

Welcome!
The ignition lock breaks down quite rarely, but it still happens. After a lock breaks down, of course, it must be replaced with a new one, but how can you do this, you ask? Some people still know the answer to this question, and some do not. For unknowing people, we have just prepared this article, which will describe in detail the course of replacing the ignition lock. And at the end of this article you will find a video clip, which will describe in detail the process of replacing this lock.

Note!
To replace the ignition switch, you will need the following tools: First, you will need screwdrivers, as well as a drill, a small hammer, pliers, and you will definitely need to stock up on a chisel!

Summary:

When do you need to change the ignition switch and contact group?
It must be replaced when it breaks down, as well as when the key is lost, and even if the larva in the lock stops turning and stalled in one place.
The contact group must be replaced when it is deformed, and even if, after turning the key in the lock, the car's engine stops starting.

Note!
Before you immediately say that the contact group of the lock is to blame for everything, first check the contacts of its wire pads for operability. (How to check the contacts of the contact group, see below in the heading: "Checking the contacts of the wire block")

Withdrawal:
1) At the beginning with "Battery is a battery", unscrew the nut that holds the "-" terminal on the battery and then discard the clip. (How to remove the negative terminal from the battery, see the article about "Replacing the battery with a VAZ", in the "first" paragraph)

2) Then remove the steering column cover and both under-steering switches. (How to remove the cover and both switches, see the article: "Replacing the under-steering switches")

Further, for clarity, the operation will be shown with the steering wheel removed, but you can still remove the ignition lock without removing the steering wheel.

3) Next, insert if the lock allows, then in this case, insert the ignition key into it and put it in the "0" position.

Note!
The key must be installed in this position only to disable the anti-theft device!

4) Now remove the four bolts that secure the ignition switch. In the event that you have sheared head bolts, then knock them down with a hammer and chisel. (Be sure to read the paragraph "Important!")

Note!
If this does not work, then in this case try to drill out all four bolts, but just do it carefully without damaging anything!

5) After the bolts are loosened, remove them with pliers from the hole.

6) Next, remove the bracket from the left side, and the ignition lock from the right.

7) Now disconnect the electrical connector.

8) And finally, crawl under the dashboard, and already there, disconnect the connector coming from the ignition switch to the relay.

Installation:
Installation of a new lock is performed in the reverse order of removal.

1) First, remove the lock from the car using the text above.

2) Next, using the "Ohmmeter" or "Multi-meter" with the "Ohmmeter" function enabled on it, connect its leads to the electrical connector and then look at the readings of the device.

Note!
The device should clearly show "0", otherwise replace the contact group!

1) First, on the removed ignition switch, use a screwdriver to unscrew the screw that secures the ignition switch cover.

2) Then use a screwdriver to squeeze out the two plastic latches securing the lock cover.

3) Then remove the cover.

4) And finally, remove the contact group from the ignition switch.

Note!
Contact group installation is carried out in reverse order!

Important!
Not all cars of the "Samara" family have the ignition lock attached to the steering column with four bolts, on some cars it is fastened with only two bolts and from above it is fastened with a hook indicated by the red arrow!

Additional video material:
Below we have prepared a video related to the replacement of the ignition lock on the cars of the "Samara" family.

The ignition lock VAZ 2108 2109 21099 is of old and new designs:
-The old one has four positions, a relay and a long key,
-New without relay and with a short key for three positions.
The ignition lock has two functions:
-Electric: contact closure depending on the position of the key.
-Mechanical: keyless steering wheel lock.That is, it will not be possible to turn the steering wheel without a key, even if you start the car bypassing the electrical part of the lock. To rotate the steering wheel, you will need to disassemble the lock and remove the mechanical lock.
Malfunctions on the electrical part, the ignition lock VAZ 2108 2109 21099 has only two (as well as for all electricians):
1) Lack of contact in a certain position of the key. In this case, the car may not start, or individual consumers will not work.
2) The presence of contact where not needed. In this case, the castle begins to melt, smoke and emit a characteristic smell.
Replacement ignition lock VAZ 2108 2109 21099:
1) Remove the steering wheel cover. To do this, unscrew the screws securing the upper and lower parts to each other. Removing the protection, we immediately get access to the ignition switch and steering column switches.

Steering wheel cover VAZ 2109

2) Unscrew the plastic lining of the ignition lock with a screwdriver. We remove it.

3) Remove the contact group of the ignition switch.

Contact group of the ignition lock VAZ 2109

It connects to the rest of the wiring with a plug. If the replacement is made with a new type of ignition lock, then it will be necessary to redo the wiring a little.

Contact group of the ignition lock VAZ 2109

It will not work just like that, since they have different connection schemes.
4) Then we unscrew the mechanical part of the lock, which is attached to the steering wheel.

Ignition lock without contact group

We unscrew the mechanical part of the lock

Install the new lock in the reverse order.
The contact group of the ignition lock is sold separately, which can be replaced without touching the entire lock.
Checking the correctness of work ignition lock VAZ 2108 2109 21099:
In order to check whether the lock is working properly in case of suspicion, a diagram is needed indicating which contacts are closed with each other at different positions of the key in the ignition lock.

Scheme for a new type of ignition lock

Scheme for an old-style ignition lock

The diagram is shown below:
Explanations for the diagram (according to the colors of the wires of the contact group):
Red - to the starter,
Pink - + 12V,
Brown - + 12V to turn on the ignition relay,
White - turn on the ignition relay,
Black, blue - other consumers.
Key position "0":
No wire in the contact group should ring with others. All wires are open from each other.
Key position "1":
In this position, the ignition relay turns on and the VAZ 2108 2109 21099 ignition system is powered on the blue and black wire.
White is closed with brown, pink with blue and black.
Key position "2":
In this position, again, the ignition relay remains on, + 12V is supplied to the starter relay.
White is closed with brown, pink with red and black.
Key position "3":
In this position, the circuits are closed, providing the car's illumination, dimensions, and the high-beam headlights signaling.
Brown is closed with black, pink with black.
A typical example of a contact group malfunction: the car will not start. You turn the starter, there is no spark. You start sinning on the switch, the Hall sensor, the coil. But then it turns out that everything is in order, just the ignition system is not powered. That is, from the ignition lock VAZ 2108 2109 21099 power is not supplied to the ignition system.

Malfunctions of the ignition lock VAZ 2109

Malfunctions of the VAZ 2109 ignition lock are quite common. This element consists of two parts: mechanical and electrical.
Because of this, malfunctions of the ignition lock on the VAZ 2109 can be a big problem for many, which they cannot cope with on their own. This publication aims to familiarize the reader with all known faults in the ignition switch and explain how to fix them.

Let's start with the structure of the castle.
Let's find out how it looks, what it consists of, what is its principle of operation, and so on:

As mentioned, the ignition lock is a very important element of the VAZ 2109 car, because almost all available equipment is associated with it.

Note. Although there are components that do not depend on the lock in any way. Here they are: license plate lights, brake lights, dimensions, emergency lights, interior light and torpedo lights.

There are different ignition locks: new or old. The first version without a relay has three positions and a short key, the second with a relay has four positions and a long key.

VAZ 2109 ignition lock malfunction

Below is a typical diagram of the ignition lock on the "nine".

The lock belongs to the car ignition system. We note right away that if problems are observed, then you can fix them with your own hands, because, as a rule, an outdated ignition system is installed on the "nine", which does not require diagnostics and repair at the service station.

The following is a tip for making sure the ignition switch does not actually work:

Insert the ignition key and turn it to a certain position. There must be a short circuit in the circuit. We look at the diagram: if position “1” of the key, is the outdoor lighting or control devices working;
It is recommended to check at all positions of the lock. If there are deviations from the norm, there is a problem with the lock;
You can check the functionality of the ignition switch in the following way: turn the steering wheel, which should not be blocked. The lock on a working steering wheel should only work when the key is turned again from position “1” to position “2”;

VAZ 2109 ignition lock malfunction

You can reliably check whether the lock works like this: we take an ordinary portable lamp and connect it with one end to the mass, the other to the lock. We turn on the ignition - if the light is on normally, then the lock is in order. If the light is weak or does not light up at all, the lock is faulty.

Malfunctions of the ignition lock in the VAZ 2109

Among them, the following are in the first place:

The lock is jammed. This is even observed in "nines" when a new lock is installed. The reason is a factory defect or what is given below.

Note. The lock can also jam due to problems of interaction with the starter. In this case, you need to inject a little silicone grease inside the lock and do this every time the lock is jammed.

The lock can wear out over time and this will cause its poor performance;
The ignition lock easily becomes unusable in case of an unsuccessful attempt to steal a car, as well as any careless handling.

Usually the lock can be repaired. If this does not work, you will have to completely replace it (see Replacing the VAZ ignition switch on your own).
Repair of the lock in most cases comes down to replacing the cylinder or contact group. If after that the problem was not eliminated or it is possible to change the entire lock, then it is better to do the latter.

Vaz 21093 ignition lock

Remove the steering column cover and unscrew the mounting bolts that tighten the ignition lock clamp.

Note. The bolts have sheared heads and then you have to use a hammer and chisel. The bolts are first loosened by blows with a chisel, and then unscrewed with pliers.

Disconnect the two parts of the clamp so that they disengage;
The larva can be changed already at this stage of the operation;
We take out the side pin that holds the larva in the lock.

Advice. The larva can be easily dismantled with a thin screwdriver, for example, from a clock. At the same time, you must knock on the lock with a hammer.

If you cannot pull out the larva after the side pin has been removed, you can try to drill the larva using a thin drill;

If again it was not possible to remove the larva, then it is recommended to finally remove the lock;

We remove the plugs of the wires.

Note. One of the plugs (the one with the larger connector) is under the torpedo. To remove it, you need to stick your hand under the panel.

If the ignition switch is with a relay, then we take it out from under the panel;

Disconnect the connector;

We also remove the ground wire;

Remove the cover by squeezing the latch, and then the contact group;

Now it will be much easier to remove the larva;

We change it to a new one;

We check the work on site before putting everything in place. We turn the key inside the lock - all the processes described above should work.

Note. Do not forget to check also the operation of the steering lock. If the steering shaft does not lock at full turn of the steering wheel, adjust the correct position of the lock on the column.

After a thorough check, making sure everything is working correctly, tighten the bolts until the heads come off. It is desirable to use the key for "10".

Replacing the contact group of the lock, if the malfunction of the lock lies precisely in this, from the point of view of monetary costs, the most profitable. Actions boil down to removing the lock (how to do this is described above).
Here are some guidelines to follow:

Before disconnecting contacts, you need to number them to avoid confusion;

Some models of locks in the design of the contact group have a retaining ring, which must first be removed. This is most easily done with an awl.

Malfunctions of the ignition lock on the VAZ 2109 can thus be eliminated with your own hands. In the process of work, it will be very useful to study various photo materials and schemes, watch a thematic video review.
The cost of repairing or replacing the lock will be minimal, since all the work presented in our instructions is carried out independently.To check the ignition switch, set the key in sequence to the positions at which the circuits indicated in the table should be closed.When the key is set to position “III”, the anti-theft device must be activated. When the key is turned from position “III” to position “0”, the anti-theft device must be switched off. This can be checked by turning the steering wheel.When restarting from position “I” to position “II”, the blocking is activated. The key to position “II” can only be turned from position “0”.If there are defects, replace the contact group or ignition switch> Ignition lock VAZ 2108 2109 21099 comes in old and new designs:
-The old one has four positions, a relay and a long key,
-New without relay and with a short key for three positions.
The ignition lock has two functions:
-Electric: contact closure depending on the position of the key.
-Mechanical: keyless steering wheel lock. That is, it will not be possible to turn the steering wheel without a key, even if you start the car bypassing the electrical part of the lock. To rotate the steering wheel, you will need to disassemble the lock and remove the mechanical lock.
Malfunctions on the electrical part, the ignition lock VAZ 2108 2109 21099 has only two (as well as for all electricians):
1) Lack of contact in a certain position of the key. In this case, the machine may or may not work for individual consumers.
2) The presence of contact where not needed. In this case, the castle begins to melt, smoke and emit a characteristic smell.
Replacement ignition lock VAZ 2108 2109 21099:
1) Remove the steering wheel cover. To do this, unscrew the screws securing the upper and lower parts to each other. Removing the protection, we immediately get access to the ignition switch and steering column switches.Steering wheel cover VAZ 21092) Unscrew the plastic lining of the ignition lock with a screwdriver. We remove it.3) Remove the contact group of the ignition switch.Contact group of the ignition lock VAZ 2109It connects to the rest of the wiring with a plug. If the replacement is made with a new type of ignition lock, then it will be necessary to redo the wiring a little.Contact group of the ignition lock VAZ 2109It will not work just like that, since they have different connection schemes.
4) Then we unscrew the mechanical part of the lock, which is attached to the steering wheel.Ignition lock without contact groupWe unscrew the mechanical part of the lockInstall the new lock in the reverse order.
The contact group of the ignition lock is sold separately, which can be replaced without touching the entire lock.
Checking the correctness of work ignition lock VAZ 2108 2109 21099:
In order to check whether the lock is working properly in case of suspicion, a diagram is needed indicating which contacts are closed with each other at different positions of the key in the ignition lock.Scheme for a new type of ignition lockScheme for an old-style ignition lockThe diagram is shown below:
Explanations for the diagram (according to the colors of the wires of the contact group):
Red - to the starter,
Pink - + 12V,
Brown - + 12V to turn on the ignition relay,
White - turn on the ignition relay,
Black, blue - other consumers.
Key position "0":
No wire in the contact group should ring with others. All wires are open from each other.
Key position "1":
In this position, the ignition relay turns on and the VAZ 2108 2109 21099 ignition system is powered on the blue and black wire.
White is closed with brown, pink with blue and black.
Key position "2":
In this position, again, the ignition relay remains on, + 12V is supplied to the starter relay.
White is closed with brown, pink with red and black.
Key position "3":
In this position, the circuits are closed, providing the car's illumination, dimensions, and the high-beam headlights signaling.
Brown is closed with black, pink with black.
A typical example of a contact group malfunction: the car will not start. You turn the starter,. You start to sin on the switch, Hall sensor,. But then it turns out that everything is in order, just the ignition system is not powered. That is, from the ignition lock VAZ 2108 2109 21099 power is not supplied to the ignition system.

One of the main components of the VAZ-2109 can be called the ignition lock, it is on it that the successful start of the car and the operation of the elements that depend on the electrical network depend on it. Usually it works for a long time, trouble-free, breaks down extremely rarely, but if this happens, then replacement is inevitable. Some motorists have traveled half their lives and have never encountered this problem, others were less fortunate. In any case, in order to confidently drive on the roads, it is advisable to know how to independently replace this element of the car.

On the VAZ-2109, you can find the ignition of a new as well as an old model. Older models have 4 positions, a long key and a relay. The new ones have 3 positions and a short key, and the relay is not provided at all in it. The ignition lock of the VAZ-2109, like that of other cars, is designed to perform two functions: to block the steering column (mechanical) and to close the contacts when turning the key (electric).

The electrical part works depending on the turn of the key:

auto de-energized - 0;
voltage is applied to the entire power grid - 1;
current supply only to the starter - 2;
switching on emergency lighting.

Given that the ignition lock is designed to perform two functions, all breakdowns are divided into mechanical and electrical. Mechanical faults can be attributed to jamming of the larva in one of the positions when it is impossible to turn the key. The contact group, which is time to change, when, when turning the key, the car engine does not start or there is a deformation.

Electrical faults can appear in any position of the key, as they are associated with a violation of the integrity of the electrical network.

In a situation where there is no contact, all the components of the system do not function. If there is a contact in the wrong place, a short circuit and overheating will occur, which will lead to the need to install a new lock.

To replace the ignition switch, you need to perform all actions in a specific sequence:

Before replacing, you must remove the negative terminal from the battery.
Remove the steering column shroud and the two switches located under the steering wheel.
After that, you need to insert the key into the ignition lock and set it to the zero position. This is necessary in order for the anti-theft device to be disabled.
Next, unscrew the 4 bolts that hold the ignition switch. If shear head bolts are installed, knock them down with a hammer and chisel.
After unscrewing (knocking off) the bolts, remove them from the holes using pliers.
Remove the bracket on the left side, and then remove the ignition switch on the right side.
Then disconnect the connector from the electrical connector.
Climb under the dashboard, there, disconnect the ignition switch connectors from the relay.

Installing a new lock should be done step by step in reverse order.

Use an ohmmeter to check the pins on the wire block. Zero must be displayed on the device. If his testimony is different, change the contact group.

To change a contact group, you need to do the following:

Using a screwdriver, remove the screw that secures the cover.
Fold back the plastic tabs that hold the cover, then remove it.
Remove the contact group.

The contact group is also installed in the reverse order.

Not in all cases it will be possible to find four bolts on the steering column on the VAZ-2109. On some models it can be secured with two screws and a hook.

There is a special offer on our website. You can get a free consultation of our corporate lawyer by simply asking your question in the form below.

One of the key components on the VAZ 2109 vehicle is the ignition lock. The electrical circuitry of the machine uses it as a switching unit to supply voltage to the required power circuits. If this does not happen due to a switch malfunction, then it is possible to disconnect individual groups of consumers or the car as a whole - it simply will not start.On a VAZ 2109 car, 2 standard modifications of the lock can be installed. The old one has a catalog number 21080-3704005-60. Differs in four key positions (long), and also contains an ignition relay. The new node with the catalog number 21080-3704005-30 has only three key positions, there is no relay in it.To connect all wires to the lock of a VAZ 2109 car, a contact group is used. Each of the key positions has its own set-up, which means that there is a group of consumers.

The lock and its circuit perform two functions: electrical and mechanical. The essence of the first is to close certain groups of contacts, based on the position of the key. From a mechanical point of view, when the ignition is off, the steering wheel is locked, making it impossible to turn it. That is, the second function is protective.

The nature of the malfunctions of the lock knot on a VAZ 2109 car can also be electrical or mechanical.

The first group includes violations of the integrity of electrical circuits in the switch at a certain position of the key. If there is no contact, then the connected consumers may not work, or the car will not start at all. If there is a contact, but the wrong sections of the circuit are closed, which should be, this is fraught with a short circuit and thermal damage to the lock. It will begin to melt and a characteristic odor will appear. Depending on the scale of the disaster, it is likely that the contact group will need to be replaced.

From a mechanical point of view, the core / larva can get stuck in any position. In this case, it will be physically impossible to turn the key in the lock. The only correct repair option would be to replace the entire assembly.

To diagnose faults in electrical circuits, you need to stock up on the following tools.

Multimeter, or tester. In its absence, as an option, you can use a control lamp operating under a voltage of 12V.
A set of screwdrivers, keys for dismantling the lock. Since the only option for repairing mechanical faults is to replace parts that are out of order, they will come in handy in this case.

Before starting diagnostics, you will have to disconnect the terminal block and ring all the contacts in the sequence that corresponds to each of the key positions. For clarity, there should be an electrical diagram of the unit at hand. If the circuit is closed, then the resistance indication will be present on the device.

Replacing the lock should begin with de-energizing it. To do this, you will have to loosen the fastening nut and remove the negative terminal of the battery. After that, the protective and decorative casing, turn / washer switches are removed. The steering column lock is secured with four screws or two screws and a hook latch. Removing it can be problematic due to the screws. In this case, they will have to be cut or drilled out, doing everything extremely carefully. The terminal block is disconnected, and the dismantling process can be considered completed at this.

Assembling a new lock assembly is similar, but in reverse order.

On a VAZ 2109 car, as well as on all other cars, the ignition switch is one of the most basic elements of electrical equipment. This element consists of a mechanical and electrical part. The mechanical part is responsible for locking the steering wheel in the absence of a key in the lock, and the electrical part is responsible for supplying voltage to the necessary electrical circuits, depending on the selected position.

The ignition switch, as already mentioned, is a very important element in any car. Almost all equipment in the car works through the ignition switch. What is the exception? Regardless of the ignition switch in the "nine", only the rear license plate illumination, parking lights, brake lights, hazard warning lights, dashboard illumination and interior lighting function.

At the same time, the ignition lock itself on VAZ 2109 cars can be different: a new model - with three positions, a short key and without an ignition relay, or an old model - with four positions, a long key and a relay.

ignition relay,
plug connector for ignition switch,
ignition switch.

The ignition switch, like any other element of the car, can fail. In such a situation, it is necessary either to repair the ignition lock or, in the event of a serious malfunction, simply replace this element with a new one. However, in the latter case, before carrying out this very replacement, you should make sure that the ignition switch is actually faulty. How to do it?

The ignition key must be inserted into the ignition lock and set this key in a certain position. During such actions, the circuit must be closed, by which the operation of the lock is judged. For example, when the ignition key is turned to the third position, the security system should start to operate, and when the key is turned to the zero position, this system should turn off. Any deviation here will indicate a real problem with the ignition.

Another way to check if the lock is working is to turn the steering wheel. It should not be blocked. The blocking should only work when the ignition key is turned again from the first position to the second. And in the second position, the key, as you know, can only be turned from the zero position.

Many owners of "nines" note one unpleasant feature of their iron "horses" - that over time, the ignition lock in them begins to simply jam. Even if it was installed quite recently. Most likely, this defect is a factory defect and you need to contact the store where you purchased the new ignition lock (for this purpose, it is better to keep receipts for such purchases) in order to make a return. However, if this option is not available to you, do not rush to despair!

The fact is that when the ignition lock wedges when starting the engine, a voltage is supplied to the starter, which can lead to the failure of this part. But this does not mean at all that you need to run for a new part in a car shop.In this situation, you can simply buy silicone grease and apply it to the inside of the lock every time the lock wedges.

Wiring diagram of the ignition lock on the VAZ-2108, 2109 and 21099 of the old model with an unloading relay.

Pinout of the ignition lock VAZ-2109 with unloading relay:

comes + 12V in position I, II, III (parking)
comes + 12V in position I, II, III (parking)
comes + 12V in position III (parking)
position I, + 12V goes off after turning on the ignition (contact 15/2), disappears at start (II);
position I, + 12V goes to the starter (pin 50);
position I, + 12V goes off after turning on the ignition (contact 15), at start II does not disappear;
+ 12V comes from the battery (contact 30);
comes + 12V constantly.

Pinout of the new VAZ-2109 ignition lock:

comes + 12V constantly
comes + 12V constantly
+ 12V comes after the ignition is turned on (contact 15), at the start of II it does not disappear;
+ 12V comes in after turning on the ignition (contact 15/2), disappears at start (II);
position I, + 12V goes to the starter (pin 50);
+ 12V comes after the ignition is turned on (contact 15), at the start of II it does not disappear;
+ 12V comes from the battery (contact 30);
comes + 12V constantly.

Photo 1, pinout of the new VAZ 2109 ignition lock

Photo 2, pinout of the new VAZ 2109 ignition lock

5. Backlight number plate.

This is necessary so that when stopping on a highway or in a city in an unlit place, we do not need to turn on the ignition to be noticed.

Lighting locks on the VAZ 2109 can be of different designs. There are 2 samples, this is. new and old. The new one differs from the old one, only in the absence of a relay, a shortened key and three key positions instead of four.

2. Ignition switch connector

I - Ignition. All devices of the electrical circuit are working.

II - Starter. Starts to turn the starter, the dipped headlights are turned off.

III - Parking. All devices work as in the ignition position.

On a VAZ 2109 car, 2 standard modifications of the lock can be installed. The old one has a catalog number 21080-3704005-60. Differs in four key positions (long), and also contains an ignition relay. The new node with the catalog number 21080-3704005-30 has only three key positions, there is no relay in it.

To connect all wires to the lock of a VAZ 2109 car, a contact group is used. Each of the key positions has its own set-up, which means that there is a group of consumers.

Contacts "30" and "30/1" are closed. All dependent power circuits are disconnected.

In this position, voltage is supplied to the elements of the ignition control system. For this, the white wire is closed with a brown wire, and the pink one is black and blue. In this case, several groups of contacts are formed. For example, "30 INT" turns on the power supply circuit for external, including high-beam, lighting, dashboard illumination. Contacts "30/1" and "15/1" give voltage to the lamps of direction indicators, reverse motion, elements of the ignition system, etc. The pair "30/1", "15/2" feeds the headlights of low / high beam, foglights , washer, fans.

The ignition relay switched on at the previous stage continues to work. The main one is a pair of contacts "30", "50", which provides voltage for the starter. Parallel to it, chains should be formed from the contact connections "30/1", "15/1", as well as "30/1", "15/2". The consumers that are connected in this case are similar to those described for position "I". The pink wire in the contact pair, together with the black one, is shorted to red (instead of blue).

It is used to supply voltage to the components of the parking system ("30/1 R") and side lighting / instrument panel illumination ("30 INT"). The black wire forms a closed circuit along with the brown and pink wires.

The nature of the malfunctions of the lock knot on a VAZ 2109 car can also be electrical or mechanical.

To diagnose faults in electrical circuits, you need to stock up on the following tools.

Multimeter, or tester. In its absence, as an option, you can use a control lamp operating under a voltage of 12V.
A set of screwdrivers, keys for dismantling the lock. Since the only option for repairing mechanical faults is to replace parts that are out of order, they will come in handy in this case.

Before starting the diagnosis, you will have to disconnect the terminal block and ring all the contacts in the sequence that corresponds to each of the key positions. For clarity, there should be an electrical diagram of the unit at hand. If the circuit is closed, then the resistance indication will be present on the device.

Video (click to play).

Assembling a new lock assembly is similar, but in reverse order.