Sometimes during repairs or replacements you have to disconnect the ignition switch from the on-board network and then reconnect it. This seemingly simple operation is fraught with many features, without knowing which you can make serious mistakes. Today we will look at what the VAZ 2114 ignition switch circuit looks like, how to connect this device according to it, and also what important points should be taken into account.
Ignition switch VAZ 2114
Replacing the ignition switch of a VAZ 2114
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.
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.
Why you may need to replace the ignition switch
There can be several reasons for this problem, the most common of which are:
- The lock is broken; after all, it is constantly subject to wear and tear.
- Lost keys.
- Damage caused by attempted theft.
- 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.
How to check the ignition switch of a VAZ 2114
There are several ways to determine the source of the problem:
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:
- +12V comes for the inserted key sensor microswitch;
- the mass comes when the driver's door is open;
- +12V goes to the starter (pin 50);
- +12V goes out after turning on the ignition (pin 15);
- +12V goes out when the key is inserted to pin 5 of the BSK;
- comes +12V to illuminate the lock cylinder;
- +12V comes from the battery (pin 30);
- not used.
- The first thing to do is disconnect the ignition switch power connector.
- After this, connect the multimeter to wires four and seven, and then do the same with wires fifteen and thirty, respectively.
- 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.
- 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.
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.
| 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.
Removing the ignition switch
To remove the ignition switch, you must do the following:
- Loosen the breakaway bolts using a hammer and chisel.
- Now the bolts can be removed by hand or with pliers if they are not loosened enough or cannot be loosened sufficiently.
- Remove the ignition switch mounting bracket from the steering column.
- Disconnect the power connector and dismantle the unit.
Video: replacing the ignition switch of a VAZ 2114
Settings
Only autorun functions can be configured. To activate programming mode:
- Disable security
- The ignition key is set to position 0.
- Then press the Valet key six times in the main block.
- Turn on the ignition
- After six beeps, use the same key to select the desired function, and use the key on the key fob to select the desired value.
The optimal settings for VAZ - 2115.2114 will be the following: function 12 - set to value 3, function 11 - value 4, function 9 - value 3. To select value 4, press and hold the third button until the melody is played. After playing, press it again.
To check the correct connections, perform the following steps:
- Disconnect the yellow cord from block A91 to terminal 15 for a while.
- The engine is started using the ignition key
At the same time, the alarm indicator should blink.
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:
- 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
