Ignition switch (lock) diagram 2104, 2105, 2107

02/28/2022 1,960 VAZ 2107

Author: Ivan Baranov

The starter on passenger cars of the Tolyatti Automobile Plant wears out quickly due to poor design of the unit. In case of damage, the owner of the vehicle will be able to remove the ignition switch on a VAZ 2107 independently with a minimum set of tools.

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Installing the "Start" button

Some Kopek owners tune the ignition system of their cars by installing a “Start” button instead of the standard ignition switch.
But what does such tuning give? The essence of such modifications is to simplify the process of starting the engine. With a button instead of a lock, the driver does not need to poke the key into the lock, trying to get into the cylinder, especially without the habit and without lighting. In addition, you don’t need to carry the ignition key with you and worry about losing it. But this is not the main thing. The main thing is the opportunity to enjoy the process of starting the engine with one press of a button, and also to surprise the passenger with this.

Using this button, you can start the engine without the ignition switch and key.

In automobile stores you can purchase a kit for starting a power unit from a button for about 1,500–2,000 rubles.

A kit for starting an engine with a button can be purchased at auto stores.

But you can save money and assemble an analogue yourself. To do this, you only need a toggle switch with two positions and a button (not recessed), which will fit the size of the ignition switch housing. The simplest connection diagram is shown in the figure.

The toggle switch and button can be installed in any convenient place

Thus, by turning on the toggle switch, we supply voltage to all devices and to the ignition system. By pressing the button, we start the starter. The toggle switch and the button itself, in principle, can be placed anywhere, as long as it is convenient.

As you can see, there is nothing complicated either in the design of the VAZ 2101 ignition switch or in its repair. If it breaks, you can easily repair or replace it.

Pinout of the ignition switch VAZ-2101 VAZ-2107

Electrical diagram of the VAZ-2105 and VAZ-2104 cars.
The ignition switch for these cars is located to the left of the steering column. It is fixed directly to it using two fixing bolts. The entire mechanism of the device, except for the upper part in which the keyhole is located, is hidden by a plastic casing.

On the visible part of the ignition switch housing, special marks are applied in a certain order, allowing inexperienced drivers to navigate the lock activation mode when the key is in the hole:

“ ” – a mark indicating that all systems, devices and instruments that are turned on using the lock are turned off (this does not include the cigarette lighter, interior lighting, brake light, and in some cases the radio);
“I” is a mark informing that the vehicle’s on-board network is powered from the battery. In this position, the key is fixed independently, and electricity is supplied to the ignition system, to the electric motors of the heater and windshield washer, instrumentation, headlights and light signaling;
“II” – engine start mark. It indicates that voltage is applied to the starter. The key does not lock in this position. If you release it, it will return to the "I" position. This is done so as not to subject the starter to unnecessary loads;
“III” – parking mark. If you remove the key from the ignition in this position, the steering column will be locked with a latch. It can only be unlocked by inserting the key back and turning it to position “0” or “I”.

The ignition switch has five contacts and, accordingly, five terminals, which are responsible for supplying voltage to the desired unit. All of them are numbered for convenience. Each pin corresponds to a wire of a certain color:

“50” – output responsible for supplying current to the starter (red or purple wire);
“15” – terminal through which voltage is supplied to the ignition system, to the electric motors of the heater, washer, and instrument panel (double blue wire with a black stripe);
“30” and “30/1” – constant “plus” (pink and brown wires, respectively);
“INT” – external lighting and light signaling (double black wire).

Color gradation

To correctly connect the contacts on the back side, you need to know the colors of the wires. Each of the chips comes with a cable with insulation of a personal shade. We recommend focusing on the diagram:

pin 50 – contacts the red wire connected to the starter;
pin 30 – pink contact;
pin 30/1 – brown cable;
pin 15 – blue with a dark stripe is in contact with the heater, ignition, etc.;
INT pin – black cable, responsible for starting the head optics and operating the dimensions.

After all the wiring is connected, we can reconnect the battery terminals and check the functionality. We start the ignition in each position one by one, testing the performance of the devices.

Self-replacement

Checking the ignition switch on a VAZ 2108, 2109, 21099 car

If there is a specific problem with the lock, jamming or general breakdown, a complete replacement of the device assembly may be necessary. To do this, you need to remove the old one, then install the new one in the socket and correctly connect all the wires to the terminals.

The main condition is to do everything slowly and remember the actions taken. This is especially true for the correct connection of wires.

To replace the ignition switch, you must follow the following sequence of actions:

Disconnect ground from the battery. If this is not done, a short circuit will occur when the device is removed.
Set the lock to the “zero” position.
Cover it with a special decorative plastic covering.
After this, you should unscrew the fastenings of the device itself.
Find the technological window. It is located where the lock is secured. You need to press the locking corkscrew that holds the element body and pull the lock out of the socket.
The wires that are directed to the contact group of the device must be disconnected.
If only the mechanical part of the device needs to be replaced, then use a screwdriver to remove the retaining ring, remove the group of contacts and install it in the new device.
Install a new lock in the slot.
Tighten the fasteners on it.
Connect all cables to the ignition switch terminals. To do this, it is recommended to use a special scheme.
After this, install the decorative cover on the steering column.
Screw the fastenings of the cover.
Connect the ground cable to the battery.
Check the quality of the work performed, why try to start the car.

Ignition switch circuit

As can be seen from the description, you can remove the lock without any problems. If you only need to replace the contact connection point, then experts still recommend dismantling the entire device. This way the replacement task can be greatly simplified.

In addition, you need to have a good understanding of how to connect all the electrical wires. Usually the connection diagram itself is displayed on the device box:

First, you need to use an awl or a screwdriver to remove the retaining ring that holds the contact group in the body of the device itself. In this case, only experience and skill will help, since the operation is quite problematic.
Change the old contact group by installing a new one in its place.
Install the retaining ring into the special groove on the body.
Make all wire connections.
Place the decorative cover in place and secure it.
Next, connect the battery and ground.
Check for normal operation.

Replacement instructions

So, how to remove the ignition switch on a VAZ 2107 and replace it with a new one?

To do everything right, follow these steps:

First of all, don’t forget to remove the terminals from the battery!
De-energize the car's electrical circuit; to do this, disconnect the battery, so you can prevent a possible short circuit in the wiring during operation.
Place the key in the 3Z and turn it 90 degrees. In this position, the system shaft will automatically be locked and will not interfere with the removal of the mechanism.
To remove the plastic trim from the steering column, you need to unscrew the five fixing screws connecting the upper and lower parts. Both parts of the cover must be removed; do this carefully so as not to damage the casing.
Then you need to unscrew two more bolts - with their help the ZZ itself is fixed. These screws are located on different sides of the switch.
After these steps, you need to disconnect the cables from the contact group of the node. Use an awl to remove the fastener by reaching into the flat hole with the tool and pressing the latch. At this point, using a flat-tip screwdriver, pry up the assembly and remove it from the bracket. When all the screws are removed and the fasteners are bent, the mechanism can be dismantled without any problems. In the event that you only need to replace the group itself, using the same flat-tip screwdriver you will need to move the ring away - and the element can be removed without any problems. When installing a new contact group, you need to install a pass on the secret part, this way you can make a small engagement. Then the entire structure must be clamped with a spring ring.
To install a new switch, first insert the key into it and turn it to position 0. Then tighten the fastener and simultaneously install the switch into the bracket.
After this, you need to connect the wires of the replaced ZZ in accordance with the diagram below. The diagram is very important, because if the connection of the contacts is broken, it can lead to a short circuit in the wiring in the network. Accordingly, electrical appliances and devices may eventually fail.
Finally, you need to install both parts of the plastic cover and secure them with screws.

Why is it needed?

Self-replacement of the ignition switch of a VAZ 2110

As soon as cars appeared, there was no ignition key, and the engine was started using a curved element for the engine, which was quite large and stuck in the front or back of the car. Thus, it turned out that the engine was started manually in the literal sense.

Now this function has been inherited by the starter, which turns the internal combustion engine by the flywheel - a large flat disk with teeth. This disc is located between the engine and the clutch.

This does not happen without the participation of battery power, of course.

The ignition switch is a device that, when turned on, ensures the supply of electric current from the battery to the traction relay. This is a kind of first push to move the vehicle. Therefore, the ignition switch is an important element, and when it breaks, replacement cannot be avoided, and in order to install a new one, you need to remove the old one.

Removing a faulty device

To remove the ignition switch of a VAZ 2106, the following tools are required:

positive screwdriver;
slotted screwdriver;
awl.

Replacing the ignition unit

If you do not have an awl, to dismantle the device, you can use a long thin nail with a cross section of 1.5-2 mm with a wide head or a screwdriver to unscrew small screws from the body of mobile phones.

Before carrying out the main procedure, it is necessary to remove the negative terminal from the battery. Despite the fact that a 12-volt current is practically harmless to the health of an adult, when removing the device, you can accidentally short-circuit the wires, which, in turn, can lead to the failure of important electrical equipment of the car.

To begin, insert the key into the ignition switch and turn it 90 degrees to the “0” position. This is necessary so that the pin holding the steering shaft from turning fits slightly into the secret part and does not interfere with dismantling.
Next, you need to remove the plastic steering column cover. To do this, sequentially unscrew the 5 screws connecting the lower and upper parts of the casing.
Then carefully lift the upper part of the steering column housing and pull it up. After this, remove both parts of the casing to the side.
Next, find and unscrew the screws securing the device itself. There are two of them, they are located at the bottom of the switch, on the right and left.
Then disconnect the wires from the ignition switch contacts.
Next, find a flat slot on the bracket to the left of the device, insert an awl there and forcefully press the latch with it.
After this, you can remove the device from the bracket by prying it with a slotted screwdriver.

If, despite all the efforts made, the switch “refuses” to come out of the bracket, it means that the latch is not pressed all the way. You need to press the latch with an awl, and then move the key slightly left and right without turning it. The latch will compress completely, and all that remains is to pull out the switch.

Ignition switch VAZ 2107

The ignition switch (IZ) of the VAZ 2107 is an electromechanical type device. It is located under the dashboard and is attached to a bracket welded to the left side of the steering column shaft.

Purpose of the ignition switch

The main function of the protection system is to synchronize electrical systems when starting and operating the vehicle. When you turn the key in the lock, current begins to flow to the starter solenoid relay, to the ignition system, to instrumentation and lighting devices, heater, etc. When the ignition switch is turned off, most of the electrical equipment is completely de-energized, protecting the battery from discharge. At the same time, the anti-theft mechanism is activated, blocking the steering wheel at the slightest turn.

The key in the ZZ VAZ 2107 can occupy four positions, three of which are fixed:

0 — “Disabled.” Electrical wiring is de-energized. The key cannot be removed from the lock; the anti-theft mechanism is disabled.
I - “Ignition”. The engine spark system, generator excitation, instrumentation, exterior lighting, windshield wiper blades, heater and turn signals are included. The key cannot be removed from the lock; the anti-theft mechanism is disabled.
II - “Starter”. Current is supplied to the starter. The position of the key is not fixed, so it must be forcibly held in this position. It cannot be removed from the lock.
III - "Parking". Everything is turned off except the sound signal, side lights, windshield wiper blades and interior heating stove. When the key is removed from the lock, the anti-theft mechanism is activated. When turning the steering wheel in any direction, it will be locked. To confirm the locking, a sound signal will be heard - a click. To disable the anti-theft system, you need to insert the key into the lock, set it to position “0” and smoothly turn the steering wheel in any direction until it unlocks.

When descending a Zhiguli from a mountain or driving at neutral speed, you must not turn off the engine and remove the key from the lock. Such actions will lead to jamming of the steering wheel and the creation of an emergency situation on the road due to difficulties in controlling the car.

Ignition switch connection diagram

On the new VAZ 2107, all the wires going to the ignition switch are collected into one plastic chip, which is not difficult to connect. To disable the lock, you simply need to remove this chip. If the wires are placed on the contacts separately, the connection should be made according to the following scheme:

the red wire (starter) is connected to pin 50;
to pin 15 - double blue wire with a black stripe (ignition, heater, instruments on the front panel, heated rear window);
to pin 30 - pink wire (battery plus);
to pin 30/1 - brown wire (battery plus);
to the INT contact - black wire (dimensions, rear brake lights and headlights).

The ignition switch of the VAZ 2107 is connected according to a scheme that is universal for all classic VAZ models.

Ignition switch device

The VAZ 2107 ignition switch is a cylindrical body that contains a cylinder and a contact mechanism, with a protrusion for fixing the steering wheel. At one end of the cylinder there is a recess for a key, at the other there are contacts for connecting electrical wiring. Each key is individual, which provides an additional guarantee against theft. The lock consists of two parts connected by a leash. In the upper part there is a cylinder (locking device), in the lower part there is a contact group.

The lock

The ignition switch has two tasks:

the main one is rotation of the movable disk of the contact device;
additional - steering wheel lock when the ignition is off.

The locking is carried out using a movable locking pin, which, when turning the key clockwise, is partially retracted inside the lock body. When the key is rotated in the opposite direction, the finger extends, and when the key is pulled out, the finger fits into a special recess in the steering column. At the same time, a loud click is heard.

To turn, use a leash that:

ensures rotation of the movable disk of the contact mechanism;
fixes the lock in the desired position using holes, balls and springs.

Ignition switch contact mechanism

The contact group of the lock consists of two parts:

movable disk with conductive plates;
a fixed plastic block in which electrical wiring contacts are fixed, having special protrusions at the point of contact with the movable disk.

When the key is turned, the plates on the disk close or open the necessary contacts on the block, turning on or off the corresponding components and mechanisms.

Lock device

The integrated module is a cylindrical design that has a side projection for the integrated steering clamp. When the locking pin is switched to closed mode, this option becomes part of the anti-theft system. The lock prevents the steering wheel from turning.

The two ends of the cylindrical product are functional, therefore, on one side the wiring diagram is connected to the VAZ-2107 ignition switch, and on the other side there is a cylinder for the key. Additional protection is the uniqueness of the “secret”, which requires the use of an original key/lock pair to prevent unauthorized access to the vehicle’s electrical system.

The engineers composed the 3Z from two main elements, one of which is the switching mechanism, and the second is the contact board.

Critical faults can occur in both parts. However, most of them are considered beyond repair. Restoration work mainly involves replacing damaged elements. It is also practiced to completely replace the assembly.

How to remove the ignition switch on a VAZ-2107 if it is locked?

There may be cases when it is impossible to turn the larva either by hand or with a tool. It is possible for the key to break when part of the bit remains inside the well. In both cases, the owner needs to remove the device from the car.

First dismantling option:

Remove the steering wheel from the shaft. The steering wheel is secured with a 24 mm wrench nut, which should not be unscrewed completely. Removing the steering wheel from the splines is done by supporting the legs and striking the forearms. After removing the part from the splined part of the shaft, the nut is completely unscrewed.
Remove the protective plastic steering column cover secured with Phillips screws.
Unscrew the screws securing the lock.
Press the pressure plate with a thin tool, which will slightly unlock the part. The pressure is applied through the slot on the left side of the lock. Pressing the latch will allow you to slide the lock body towards you.
Use a hammer to hit the plate on the right to rotate the lock around its axis. This will guarantee against the retainer coming back.
Using a hammer and chisel, break the plate. Apply blows carefully so as not to damage the steering column switch block.
After removing the plate, the locking rod installed in the two eyes will become visible. One of the eyes is easily visible through the hole.
Break the eyelet with a chisel or flathead screwdriver.
Press the plate again through the slot on the left and pull it up. It should move 10-12 mm.
Using a hammer, strike the lock body (in the area where the plug is installed) and pull it off the shaft.

Second option:

After the latch is recessed through the slot on the left side of the lock, you need to pull the lock out to the maximum distance.
On the right side of the lock there is a platform with text and a number. A wedge (screwdriver) is inserted under it.
After this, the area with the inscriptions is cut off with an impact screwdriver or chisel.
Use a screwdriver to push the lock pin through the hole and remove the lock from the shaft.

The third method is to destroy the castle with a sharp jerk:

One person sits in the driver's seat, the second in the passenger seat.
It is necessary to sharply jerk the steering wheel at the same time, which will cause the destruction of the clamp.
After this, the lock is removed using the usual method. It is worth noting that only late-release locks can be broken with a jerk; products from the USSR era are more difficult to break this way. In addition, there is a risk of damage to the steering components.

There are other methods for removing jammed ignition switches on a VAZ 2107 - cutting the body, turning or drilling the cylinder, and others. The final choice of dismantling method remains with the car owner.

The technique for removing a jammed device is demonstrated in a video from the Region 4253 channel.

Factory pinout

According to established tradition, drivers are forced to insert the key into the “secret” located on the left side. Such design features may cause some inconvenience for some motorists who have switched from foreign cars to domestic “classics”.

The VAZ 2107 ignition switch circuit used in a car, an injector under the hood or a carburetor, will be similar. The unit is secured with two bolts to the steering column. The mechanism of the device is hidden under the plastic casing.

Each rotation angle involves the activation of certain electrical consumers connected to the on-board network. Before connecting the ignition switch to the VAZ-2107, you need to familiarize yourself with the marks located alternately around the cylinder:

the starting position determines the inclusion of most systems and electrical consumers, which most often include “stops” located in the rear lights, interior lighting lamp, cigarette lighter contacts, and sometimes the radio is switched to this mode;
“I” – second position; continuing to move to battery-dependent marks, demonstrates the inclusion of windshield washers, heaters, measuring instruments and control indicators, head optics, etc.;
“II” – starting the power plant through the starter has its own peculiarities, since if the key is not forcibly held in this position, it will spring back to its previous position on its own, which allows minimizing any load on the electric motor;
“III” is a parking position used by motorists when it is necessary to lock the column with latches, so when it is activated, the driver removes the key from the “secret”.

Electrical diagram of VAZ 21074

In VAZ 21074 cars, electrical energy is delivered to consumers using a single-wire circuit: the “positive” terminal of each electrical device is powered from a source, the “negative” terminal is connected to “ground,” i.e., connected to the vehicle body. This solution simplifies the repair of electrical equipment and slows down the corrosion process. All electrical appliances of the car are powered from the battery (with the engine off) or the generator (with the engine running).

The wiring diagram of the VAZ 21074 injector contains an ECM, an electric fuel pump, injectors, and engine control sensors

Wiring diagram VAZ 21074 injector

The injection versions of the “Seven” released from the factory assembly line have the following indices:

LADA 2107–20 - in accordance with the Euro-2 standard;
LADA 2107–71 - for the Chinese market;
LADA-21074–20 (Euro-2);
LADA-21074–30 (Euro-3).

The injection modifications of the VAZ 2107 and VAZ 21074 use an ECM (electronic engine control system), an electric fuel pump, injectors, control sensors and monitoring engine parameters. As a result, there was a need for additional under-hood and interior wiring. In addition, the VAZ 2107 and VAZ 21074 are equipped with an additional relay and fuse box located under the glove compartment. The additional unit is supplied with wiring that supplies:

fuses: main relay power circuits;
controller constant power supply circuits;
electric fuel pump relay circuits;

relay:

The main thing;

fuel pump;

electric fan;

diagnostic connector.

Additional fuse and relay block VAZ 2107 injector located under the glove compartment

Providing electricity

The G7 is responsible for providing consumers with electricity:

Battery voltage 12 V, capacity 55 Ah;
generator type G-222 or 37.3701;
voltage regulator Ya112V, which automatically maintains the voltage within 13.6–14.7 V.

Diagram of the power supply system for the VAZ 21074 injector includes a generator, battery and voltage regulator

Engine starting

The starting system in the VAZ 21074 is a starter and ignition switch powered from the battery. There are two relays in the starter circuit:

auxiliary, which supplies power to the starter terminals;
retractor, due to which the starter shaft engages with the flywheel.

The starting system in the VAZ 21074 is a battery-powered starter with a relay and an ignition switch.

Ignition system

In early versions of the seventh VAZ model, a contact ignition system was used, which included:

ignition coil;
distributor with contact breaker;
spark plug;
high voltage wiring.

The VAZ 21074 contact ignition system consists of a coil, distributor, spark plugs and high-voltage wires

In 1989, the so-called contactless ignition system appeared, the circuit of which included:

Spark plug.
Distributor.
Screen.
Hall Sensor.
Electronic switch.
Ignition coil.
Mounting block.
Relay block.
Key and ignition lock.

In 1989, a contactless ignition system appeared, to the circuit of which a Hall sensor and an electronic switch were added

“Sevens” with injection engines use a more modern ignition circuit. The operation of this circuit is based on the fact that signals from the sensors are sent to the ECU (electronic control unit), which, based on the received data, generates electrical impulses and transmits them to a special module. After this, the voltage increases to the required value and is supplied to the spark plugs through high-voltage cables.

In injection "sevens" the operation of the ignition system is controlled by the electronic control unit of the ECU

Outdoor Lighting

The external lighting system includes:

Block headlights with dimensions.
Illumination of the engine compartment.
Mounting block.
Glove compartment lighting.
Instrument lighting switch.
Rear lights with dimensions.
Illuminated numbers.
Exterior lamp switch.
External lighting indicator lamp (in the speedometer).
Ignition.

The VAZ 21074 external lighting connection diagram will help in troubleshooting headlights and tail lights

Auxiliary equipment

Auxiliary or additional electrical equipment of the VAZ 21074 includes:

electric motors: windshield washer;
windshield wiper;
heater fan;
radiator cooling fan;

cigarette lighter;

watch.

The connection diagram for windshield wipers uses:

Gearmotors.
ED headlight washer.
Mounting block.
Egnition lock.
Washer switch.

Windshield wiper motors drive a trapezoid that moves the wipers across the windshield

How to repair a car

The ignition switch is referred to in some sources as the ignition switch.

How to properly connect high-voltage wires with a detailed connection diagram

Reasons for replacing the ignition switch on a VAZ 2101, VAZ 2104, VAZ 2105, VAZ 2106, VAZ 2107, VAZ 2109, VAZ 2110, VAZ 2114:

· The ignition switch is broken (the ignition key gets jammed when turning, the key turns with difficulty or does not turn at all). In this case, some experts advise spraying WD-40 , but, as a rule, this does not give much result, and if it does, it is a temporary result, then all that remains is to replace the ignition switch. Although there are exceptions.

· The contact group has burned out (this means the contacts on the chip, it happens that they burn out) In this case, difficulties arise in starting the starter.

How to check the contact group of the ignition switch?

The ignition system is designed to create and supply a spark discharge to the spark plugs.

It is better to carry out this type of check with an assistant. To check the contact group of the ignition switch, you should use a “control”. We connect one end of the “control” to the battery negative, and the other to the starter solenoid relay. Well, as mentioned earlier in the article, you will need the help of a friend to turn the ignition key all the way. And at this time, keep an eye on the “control” lamp, which should light up. If the lamp does not light up, therefore, the command from the ignition switch is not given. This indicates that the contact group needs to be replaced, but many motorists prefer to replace the ignition switch assembly.

But it doesn’t matter whether your ignition switch or its contact group is broken, you will still have to remove the ignition switch

Ignition switch removal tool:

· Screwdrivers (phillips and small);

Surprisingly, this is all the tool you need to replace the ignition switch on a VAZ 2101, VAZ 2104, VAZ 2105, VAZ 2106, VAZ 2107, VAZ 2109, VAZ 2110, VAZ 2114.

Which ignition switch should I buy?

Every motorist thinks about their quality before purchasing spare parts. The quality of the ignition switch depends on the manufacturer. If you need to buy an ignition switch, I can recommend leading manufacturers DAAZ, the Auto-Garant company. In short, we go to the car market and ask the seller for an ignition switch or contact group made in Russia. Don’t be fooled by a cheap product; it’s better to overpay 10 rubles than to suffer later.

How to replace the ignition switch on a VAZ 2101, VAZ 2104, VAZ 2105, VAZ 2106, VAZ 2107, VAZ 2109, VAZ 2110, VAZ 2114.

Diagnosis of ignition switch faults

The ignition switch of the VAZ 2107 is quite reliable in operation and usually fails only due to the exhaustion of its service life. ZZ malfunctions can be mechanical and electrical.

The key in the lock is stuck or won't turn

Sometimes the key in the 3Z turns with difficulty or does not turn at all. This is usually associated with a lack of lubrication in the lock cylinder - the movable disk with the plates begins to jam. Also, the cause of this situation may be damage to the working part of the key. The problem can be temporarily solved by pouring water-repellent WD-40 into the lock and replacing the faulty key with a new one. However, after some time the lock will still have to be changed.

A breakdown of the mechanical part of the ignition switch forces many Zhiguli owners to change it entirely, since the cost of the complete lock is not much different from the price of its secret part.

Devices do not turn on

If electrical appliances do not start working when you turn the key, this may be due to burnt contacts due to loose contact with each other. The situation can be corrected by cleaning all contacts with sandpaper, and the connection point of the pink wire going to contact 30 from the positive terminal of the battery should be tightened with pliers.

The starter does not turn

If the starter does not spin when the ignition is turned on, the reason for this is most often a burnt out or loose fit of the contact pair responsible for the operation of the starting device. This can be checked using a multimeter, and corrected by replacing the mechanism responsible for distributing current in the lock. The contact group can be changed without dismantling the CB. Before doing this, it is recommended to check the functionality of the starter relay with a multimeter.

Lights and windshield wiper do not work

When the lights and wipers do not turn on when you turn the key, you need to check the condition of the INT output contacts. If the lock is working properly, the problem should be looked for in other components - switches, switches, fuse box, etc.

Troubleshooting Methods

There are two methods for detecting faults:

Visual;
Diagnostic.

Ignition switch circuit

We suggest studying a visual method for determining a malfunction or breakdown of the contact elements of the ignition switch using the table.

Action	The device is working properly	The device is faulty
Turn the key to the right position (ignition)	All electrical equipment turns on	All or part of the electrical equipment does not work
Turn the key to the second position	The starter is spinning	The starter does not work, the traction relay does not click under the hood

But diagnostics allows you to get a more detailed answer. In addition, a visual inspection will not give you the opportunity to find all the reasons that could cause the ignition switch to break down.

To work, you will need a mini-tester and a multimeter in ohmmeter mode:

Disconnect the power supply from the ignition switch. To do this, you need to remove the skin from the steering column;
Switch your multimeter to an ohmmeter;
On the block coming from the lock you need to find pins 7 and 4, which correspond to pins 15 and 30;
Connect the multimeter probes to them;
Turn the key to the “Ignition” position;
On the block, find pins 7 and 3, corresponding to 50 and 30. Also connect a multimeter to them;
Turn the key to the second position - Start the engine;
If serviceability is present, the device will show zero resistance in both test cases.

VAZ ignition switch pinout

The ignition switch in cars of the VAZ family fails from time to time due to weakening of the contact posts or burning of the contacts inside it. It also happens that the cams of a plastic roller are produced. You can disassemble the lock and clean it, but it’s better to just replace it with a new one, considering that it costs pennies compared to imported locks.

But if connecting the wires together did not result in the starter operating (or it did not turn on the first time), check the solenoid relay on the starter. The contact spots on it may also burn out, which will prevent the circuit from closing normally. Alternatively, you can use a screwdriver to short-circuit the two large terminals on the solenoid relay (before doing this, put the car in neutral and use the handbrake). When closed, the starter should begin to spin vigorously. If this happens, remove and change the solenoid relay. If the starter rotates “sluggishly” when it closes, you will have to remove it and check the condition of the brushes.

The ignition switch is designed not only to start the engine - it performs several functions at once:

supplies voltage to the vehicle’s on-board network, closing the circuits of the ignition system, lighting, sound alarm, additional devices and instruments;
at the driver’s command, turns on the starter to start the power plant and turns it off;
turns off the power to the on-board circuit, preserving the battery charge;
protects the car from theft by fixing the steering shaft.

Potential problems

Possible troubles are often related to the mechanical part. They are manifested in the following factors:

the key fits tightly into the “secret”;
it is not possible to make a turn the first time;
It is problematic to remove the key from the cylinder, etc.

If you ignore such signals, it may result in breakdown. As a result, you will have to spend money on restoring the mechanism or replacing it.

In some cases, the use of special chemicals may help. One of them is WD-40 fluid. Brake fluid can replace it, which also helps delay repairs for a while.

In what cases and how should the lock be replaced?

It needs to be changed if:

The key bit gets stuck when turning it or when installing it in the cylinder. Some VAZ-2107 owners do not immediately change the central locking. Instead, either a new key is made or the lock is washed with a special liquid. But these are only temporary measures, because if the lock already has a fault, replacing it is inevitable.
If the anti-theft rod jams in any of the positions.
The starter or electrical circuits do not turn on. In this case, the breakdown consists of a faulty or burnt contact part of the wire.

In order to remove the ignition switch in a VAZ-2107, you must have:

thin screwdriver;
awl/knitting needle;
slotted and Phillips screwdrivers.

Stages of dismantling the central lock:

The first step is to turn off the power to the vehicle's on-board network. This is done simply, all you need to do is remove the battery terminal.
Next, the key must be set to the “zero” position.
The next step is to remove the steering wheel cover. It is secured with screws that need to be unscrewed.
The screws that secure the lock body are unscrewed. They are located to the left and right of it. Here you will need an awl or a thin screwdriver. First, the latch is pressed out, then the lock itself is removed.
Finally, the plug/wires from the lock are disconnected.
Its contacts are replaced or repaired.

Checking and replacing the contact group is carried out as follows:

First, the spring ring is removed, which holds the group together in the lock body. To do this, you need to pry it off with a thin screwdriver.
Next, the old contacts are retrieved.
New ones are being installed. During installation, you must ensure that the groove of the contact group coincides with the rotary rod on the secret part of the central lock.

When to replace

It is quite easy to identify mechanical problems. You just need to externally inspect the part for cracks or deformation. If jamming or sudden jumps occur when the key rotates, the mechanism requires replacement.

Diagnostics of the contact group requires a control device that will show the presence of voltage on the starter when the ignition is turned on. If there is no such device, you can use a regular “control” - a light bulb with two outgoing wires. If when you turn the key all the way, the lamp does not light up, it means that the signal is not being received and the contact group is not working. Therefore, the mechanism needs to be changed.

Tip: If one of the ignition switch parts breaks down, it is better to purchase the entire set at once, since some manufacturers may have different connecting connectors for the components.

Pinout of lock VAZ-2108, VAZ-2109, VAZ-21099

Pinout according to the old type

Pinout of the VAZ-2109 ignition switch 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 out 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 away after turning on the ignition (pin 15), does not disappear when starting II;
+12V comes from the battery (pin 30);
comes +12V constantly.

New pinout type

Pinout of the new VAZ-2109 ignition switch:

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

Changing the contact group

Exploded view of the lock

Based on price considerations, replacing one contact group is less expensive:

All our actions are repeated in principle, as in the case described above with removing the lock, you will have to remove the casing, and so on
To avoid the widespread problem associated with mixing up contacts, it is recommended to number them before disconnecting (or mark them in some other way)
This measure will save your nerves and time.
Some models of locks have a locking ring in their contact group, and here we need an awl to pull it out
It’s important not to forget to stick it in place later
Then everything is put back together and screwed to the control column

That's all, all that remains is to finish watching the video and relax and change every part of the lock.

Schematic electrical diagrams, connecting devices and pinouts of connectors

The ignition switch is designed not only to start the engine - it performs several functions at once:

supplies voltage to the vehicle’s on-board network, closing the circuits of the ignition system, lighting, sound alarm, additional devices and instruments;
at the driver’s command, turns on the starter to start the power plant and turns it off;
turns off the power to the on-board circuit, preserving the battery charge;
protects the car from theft by fixing the steering shaft.

Repair of ignition switch VAZ 2101

In any case, in order to understand the exact cause of the breakdown of the ignition switch, and also to decide whether it is worth repairing or immediately replacing, the device must be dismantled and disassembled. We'll talk about this next.

Removing the ignition switch VAZ 2101

To dismantle the lock, we will need the following tools:

wrench 10;
a screwdriver with a Phillips blade (preferably a short one);
small slotted screwdriver;
nippers or scissors;
awl.

The work order is as follows:

We park the car on a level surface and put it in gear.
Using a 10mm wrench, unscrew and disconnect the “-” terminal from the battery.
Let's go to the salon. Using a Phillips-head screwdriver, remove the four screws securing the two halves of the steering column housing.
Using the same tool, unscrew the self-tapping screw securing the casing to the steering column switch
We remove the hazard warning light switch button from its seat.
We remove the lower half of the casing and use wire cutters or scissors to cut the plastic clamp securing the wires.
Remove the lower half of the casing.
Use a thin slotted screwdriver to pry off the sealing ring of the ignition switch. Remove the seal.
Disconnect the upper half of the steering casing.
Using your hand, carefully disconnect the connector with the wires from the ignition switch.
Insert the ignition key into the well
We set the key to position “0”, shaking the steering wheel so that it unlocks.
Using a Phillips screwdriver, remove the two screws securing the lock to the bracket on the steering shaft.
Using an awl, we recess the locking rod through the side hole in the bracket.
Remove the ignition switch from the bracket.

Disassembling the lock

To disassemble the ignition switch, you only need a thin slotted screwdriver. The disassembly procedure is as follows:

Using a screwdriver, pry up the retaining ring located in the groove of the device body.
We remove the ring.
We remove the contact group from the lock body.

We'll talk about how to remove the larva a little later.

When is repair appropriate?

After disassembling the lock, it is worth carefully inspecting the well, the locking mechanism, and the contacts

Depending on the signs of a device malfunction, special attention should be paid to the particular unit to which it relates. If the key in the ignition switch does not turn due to a broken cylinder, you are unlikely to be able to repair it

But it can be replaced. Fortunately, they are on sale and inexpensive.

If the cause of the lock malfunction is wear or oxidation of the contacts, you can try to restore them using special anti-corrosion agents such as WD-40 and a dry, rough rag. It is undesirable to use abrasives for these purposes, since deep scratches on the contact surfaces will provoke their further burning. In case of critical damage to the contacts, you can buy the contact group itself.

But, if the locking rod breaks, you will have to buy an assembled lock, since one body is not sold. The lock is replaced in the reverse order given in the instructions for removing it.

Removal and installation

Removing this element from the car is quite simple and all you need is a Phillips screwdriver and a thin flat-head screwdriver or an awl. Before starting work, be sure to disconnect the negative terminal from the battery.

To get to the fastening of this element, you will first need to unscrew the bolts securing the lower facing panel of the steering column, and then remove it.

Afterwards, you need to unscrew the two bolts securing the lock, which hold it in its seat. In the same seat there is a small technological hole. By inserting a thin screwdriver into this hole, you need to press the latch that holds the lock, and then push it out of its seat.

Only then disconnect all the wires. On some models, the wiring going to the lock is collected in a chip that is put on the contacts of the lock. This feature will greatly facilitate the installation of a new element, since such a VAZ-2101 ignition switch does not require a wiring diagram.

Remove the two screws securing the ignition switch (bottom view).	Insert the key into the ignition switch, turn it to position “0” (turning off the anti-theft device), press the lock with a screwdriver through the hole in the bracket and...
...remove the switch from the bracket and the key from the switch.	Label (or remember the connection order) the wires and terminals of the ignition switch. Disconnect the wires from the switch.

But there are also versions of the car in which the wiring is directly connected to the contacts, and when installing a new element with this type of wiring connection on a VAZ-2101, an ignition switch circuit will be required.

If the lock assembly is replaced, then you can connect the wiring to the new one, install it in place, secure it and cover it with a decorative panel.

If only the contact group is changed, then the removed lock is disassembled. The contact group is fixed using a locking ring, which must be pryed off with an awl or screwdriver and removed. After this you can remove the group. A new one is installed in its place and secured with the same retaining ring. After this, everything is put in place and the VAZ-2101 ignition switch is connected.