VAZ 2114: ignition switch pinout, connection diagram, testing methods

Although replacing the ignition switch of a VAZ 2114 is an important and time-consuming procedure, nevertheless, any driver can carry it out independently, without contacting a car service center. This procedure is useful not only from a budget point of view, but can also be exciting for some car enthusiasts and be of some “sporting” interest. This unit, which is a kind of “switch” of the car, plays a very important role in the starting system of the car. It takes part in the operation of a variety of electrical circuits, such as the starter, headlights, turn signals, and window lifts. As a result, its failure leads to the fact that the car becomes impossible to drive. Let's consider what to do if this trouble does occur.

Why you may need to replace the ignition switch

There can be several reasons for this problem, the most common of which are:

1. The lock is broken; after all, it is constantly subject to wear and tear.
2. Lost keys.
3. Damage caused by attempted theft.
4. Malfunction of the connector with wires.

The malfunction can be easily determined when the engine is turned on, if the sound of the starter is not heard, the relay clicks, or the electrical equipment simply does not turn on.

Troubleshooting Methods

There are two methods for detecting faults:

• Visual;
• Diagnostic.

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

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.

How to check the ignition switch of a VAZ 2114

There are several ways to determine the source of the problem:

• diagnostic;
• visual.

First you need to check the car's reaction to different positions of the key in the lock. To begin with, the key must be set to position number one, which is also the ignition. If the module is in order, all the car's electrics should work. However, in the case when all or part of the electrical system does not work, we can conclude that the lock is damaged.

In position number two of the key, the engine starts, for which the starter is turned on. If, when you turn the key, you do not hear the sounds of the starter operating (rotation), as well as the sound of the relay clicking, then either the ignition switch or the starter itself is broken. In this case, you need to run a diagnostic to get other details about the problem. In this case, you will need a multimeter set to ohmmeter mode. Also, before removing or installing the lock, you need to remove the steering column cover.

Pinout of the ignition switch VAZ-2114:

1. +12V comes for the inserted key sensor microswitch;
2. the mass comes when the driver's door is open;
3. +12V goes to the starter (pin 50);
4. +12V goes out after turning on the ignition (pin 15);
5. +12V goes out when the key is inserted to pin 5 of the BSK;
6. comes +12V to illuminate the lock cylinder;
7. +12V comes from the battery (pin 30);
8. not used.

1. The first thing to do is disconnect the ignition switch power connector.
2. After this, connect the multimeter to wires four and seven, and then do the same with wires fifteen and thirty, respectively.
3. Turn the key in the lock to position number one. If during testing the node is not damaged, the multimeter should show a zero resistance value.
4. Next you need to turn the key to position number two. The resistance on the multimeter screen, as in the case described above, should have a zero value.

In a situation where, after checking the lock with a multimeter, the resistance value in at least one of the cases was not equal to zero, it needs to be replaced. Otherwise, the lock is working properly and other components of the car should be checked for malfunctions.

Steering lock testing

If you don't check the steering lock, you may encounter certain problems in the future. Therefore, do not waste your time on this event. It consists of removing the key from the ignition and turning the steering wheel at a slight angle.

1. If there is no lock, you will need to slightly adjust the position of the lock. Make sure it fits into the groove located on the steering shaft.
2. If the locking is effective, you will only need to tighten the four installed breakaway bolts until they stop. Twist until the heads break.

When the lock installation is completed and the test has passed, do not forget to connect the device to power and start the engine. If it starts, all systems dependent on the ignition switch are working, you can fully begin reassembly. Follow the reverse instructions for removing the casing and steering column switches. It would not be amiss to check the condition of certain nodes along the way. It is quite possible that some of them also need replacement or a little preventive maintenance.

In the technical documentation for the VAZ-2114 there is a separate section that specifically describes the design of the vehicle’s electrical equipment. So, all the elements are described in full. But, in this particular case, the issue of independently connecting the ignition wires will be considered.

So, let's look at the diagram to see how the contact connections of the ignition switch are connected.

Ignition switch pinout diagram

Regardless of the ignition being turned on, the following devices can operate: high beam, interior and instrument panel lighting, hazard lights, brake light, sound signal, as well as exterior lighting.

A separate item worth highlighting is additional equipment: a car radio (of any format), speakers, additional lighting devices are powered directly into the battery or on-board network, and much more.

Ignition switch device

Next, we will consider the switched circuits of various key positions in the ignition switch:

Ignition switch pinout

Product selection

There are several options for the ignition switch on the VAZ-2114. Let's look at each one separately:

• 2110-3704005 or KZ-881 – original catalog numbers of the ignition switch manufactured by AvtoVAZ. The wiring diagram is standard, that is, factory. Installation is quite easy. The average cost is 1000 rubles .

Preparation

It is necessary to prepare spare parts and other equipment for work. A new ignition switch will be needed. It is quite easy to find original parts and analogues on the Internet, but it is worth considering that it is advisable to purchase the lock “assembled”.

Catalog number of the original VAZ 2114 ignition switch: 21103704010. Approximate price: 500 rubles for a used part and 1200 for a new one.

As a replacement, you can use analogues with numbers: 09401, 24370407. Approximate price: 1000 rubles (new part).

In addition to the lock itself, you will need the following tools:

• spanners;
• chisel;
• pliers;
• screwdriver.

Before you begin, you must also remove the steering column cover and steering column switches.

Main signs of failure

Drivers need to take into account during operation that breakdowns can occur both due to failure of the mechanical part and due to problems with the electrical system. Popular mechanical problems manifest themselves in the following factors:

• the lock is stuck in one position and there is no way to unlock it without using significant effort;
• the steering column is jammed;
• an attempt was made to gain unauthorized access to the lock using a master key or other object unsuitable for this purpose.

Removing the ignition switch

To remove the ignition switch, you must do the following:

1. Loosen the breakaway bolts using a hammer and chisel.

1. Now the bolts can be removed by hand or with pliers if they are not loosened enough or cannot be loosened sufficiently.

1. Remove the ignition switch mounting bracket from the steering column.

1. Disconnect the power connector and dismantle the unit.

Video: replacing the ignition switch of a VAZ 2114

Useful video

You can find more information on this issue by watching the video below:

Thanks to the ignition switch (ISL), the car is not only started, but also the lighting system is turned on and power is supplied to the components included in the on-board network circuit. The article discusses when the ignition switch needs to be changed on a VAZ 2114 car, and instructions are given for replacing it.

Installation and connection of a new lock

Now that the old ignition switch has been removed, you can begin installing the new one. In order to do this, you need:

1. Take a new lock, insert the key into it and turn it to position number one. This is necessary so that the latch responsible for locking the steering shaft goes inside and does not interfere with the installation process.

Breakaway bolts to prevent the lock from being stolen