VAZ 2107 is one of the legends of the domestic automobile industry. The car was created as a luxury version of the VAZ 2105 model. At the same time, the differences affected not only the interior, but also other key components. In total, there are about 15 modifications that differ from the basic version. Unfortunately, the company's management decided to close production in 2012.
Over the course of 30 years, a huge number of cars of the described model were created. One of the most popular is the VAZ 21074, which received an engine from the VAZ 2106 model.
During their service, many cars have undergone repairs of varying complexity more than once. Let's look at the generator and its associated faults.
Difference between carburetor and injection systems
Many car owners independently replaced the carburetor with an injector, and some bought a car with an already updated system. One thing is certain – this is a step forward. But this means changing the operation of many nodes. How are things going with the generator, its operation and repairs?
There are differences, albeit minor ones. The injector assumes the presence of an ECU on board the VAZ 21074. And this is another consumer of electricity. Additional wiring is connected to the generator to provide power to the elements of the electronic control system. There are no more changes.
Note
You cannot check the functionality of the generator by disconnecting the terminals from the battery while the engine is running. This will damage the ECU.
Electrical equipment VAZ-21074
- 1- block headlights;
- 2- side direction indicators;
- 3- rechargeable battery;
- 4- starter activation relay;
- 5- carburetor electro-pneumatic valve;
- 6- carburetor microswitch;
- 7- generator 37.3701;
- 8- gearmotors for headlight cleaners*;
- 9- fan motor activation sensor;
- 10- electric motor of the engine cooling system fan;
- 11- sound signals;
- 12- ignition distributor;
- 13- spark plugs;
- 14- starter VAZ-21074;
- 15- coolant temperature indicator sensor;
- 16- engine compartment lighting lamp;
- 17- low oil pressure indicator sensor;
- 18- low brake fluid level indicator sensor;
- 19- windshield wiper gearmotor;
- 20- carburetor electro-pneumatic valve control unit;
- 21- ignition coil;
- 22- electric motor of the headlight washer pump*;
- 23- electric motor of the windshield washer pump;
- 24- mounting block;
- 25- windshield wiper relay;
- 26- hazard warning and direction indicator relays;
- 27- brake light switch;
- 28- reversing light switch;
- 29- ignition relay;
- 30- ignition switch;
- 31- three-lever switch;
- 32- alarm switch;
- 33-plug socket for a portable lamp**;
- 34- heater fan switch;
- 35 - additional resistor of the heater electric motor;
- 36 - indicator lamp for turning on the heated rear window;
- 37 - indicator lamp for insufficient brake fluid level;
- 38 - signaling unit;
- 39- heater fan electric motor;
- 40 - glove box lighting lamp;
- 41 - lamp switch on the front door pillars;
- 42- switch for alarm lights of open front doors***;
- 43- alarm lights for open front doors***;
- 44- connecting block;
- 45- cigarette lighter;
- 46- watch VAZ-21074;
- 47- switch for instrument lighting lamps;
- 48- diode for checking the serviceability of the warning lamp for insufficient brake fluid level;
- 49 - fuel level indicator;
- 50 - fuel reserve indicator lamp;
- 51- speedometer;
- 52 - turn signal indicator lamp;
- 53- indicator lamp for closing the carburetor air damper;
- 54 - battery charging indicator lamp;
- 55- carburetor air damper closed warning switch;
- 56 - instrument cluster;
- 57- econometrician;
- 58- courtesy light switches on the rear door pillars;
- 59 - coolant temperature indicator;
- 60 - tachometer 21074;
- 61- parking brake indicator lamp;
- 62 - low oil pressure indicator lamp;
- 63- high beam indicator lamp;
- 64- indicator lamp for turning on external lighting;
- 65-voltmeter;
- 66- parking brake indicator switch;
- 67- switch for external lighting lamps;
- 68- rear window heating element switch with backlight;
- 69- switch for rear fog lights with on/off indicator*;
- 70 - fog light circuit fuse;
- 71- lampshade;
- 72 - rear lights VAZ 21074;
- 73 - level indicator and fuel reserve sensor;
- 74- pads for connecting to the rear window heating element*;
- 75 - license plate lights.
Types of breakdowns
Generator VAZ 2107
What malfunctions occur if the generator does not work correctly?
- Extraneous noise appears.
- Complete lack of battery charging while the engine is running.
- Overheating and failure of the same battery.
- Damage to any or all energy consumers, including the injector.
- Increased or decreased voltage in the electrical system. The standard voltage is 13.6-14.5 V.
- Mechanical or electrical damage to the elements of the generator itself.
Obviously, this node requires special attention.
Main details
To understand where to look, you need to remember the main components that make up the generator. This:
- pulley;
- front bearing;
- rotor impeller;
- stator winding;
- magnetic circuit;
- rotor;
- rear bearing;
- “chocolate” (relay-regulator);
- diode bridge.
Most often, the brushes that are part of the relay-regulator unit wear out. Bearing wear is also common. You should also expect breakdowns of the diode bridge and the generator belt (which drives the pulley). Another part that requires periodic replacement is slip rings. They are located on the rotor and are in contact with the brushes.
To increase service life, you should regularly lubricate the mechanical components of the device (especially bearings), measure the voltage, the battery charge level and its condition, and tighten the fasteners. If you suspect any kind of breakdown, you must immediately begin repairs, otherwise there is a risk of failure of any connected device and component. If an injector and an ECU are installed on the car, then they do not joke with electricity. And the most ordinary care and prevention will reduce the likelihood of breakdown to almost nothing.
Generating Device Replacement Procedure
Before starting work, check the serviceability of the regulator relay. It is advisable to choose a model with the highest possible temperature compensation. This characteristic allows models 2106-2107 to operate at high speeds without failure. This indicator should be studied especially carefully if the VAZ 2106 or later modifications are used in areas with a hot climate.
Removing a broken device and installing a new one does not cause problems, thanks to the clear mounting method.
Difficulties arise at the stage when you need to connect a new VAZ generator. To begin with, the wires coming from the relay regulator are disconnected and subsequently insulated. Further connection of the VAZ 2108 generator is carried out as follows.
The wires, formed in the form of a ring terminal, are connected to the old place in the VAZ 2108. It is imperative to insulate the gray wire, which is not connected anywhere. Completes the installation procedure by connecting the yellow wire to the terminal. If the car owner was unable to find a device with the required power, then a model from a VAZ 2108 to a VAZ 2106 can be installed, provided that the total power of consumers is taken into account.
Careful attitude and regular preventive inspections will ensure long-term reliable operation of the machine. Even with a slight drop in speed or problems when starting the engine, there is a reason to look under the hood. The faster this is done, the less likely it is that the problem will spread further.
Hello fellow intellectuals! ))) There is a VAZ 21074i car. It’s a good car, there are no words, but this thing, called a generator, craps everything. The actual question is: what imported generator can you use? I gave up domestic spare parts a long time ago, and have never regretted it. )))
What should you pay attention to?
To carry out repairs, you need to have a general understanding of electricity and its properties. If with mechanical breakdowns everything is much simpler and often a visual inspection is enough to detect a part that needs replacement, then with electrical faults there is no such clear visualization. Moreover, the initial cause of generator breakdowns may be a malfunction of another component of the VAZ 21074, for example, the same battery. And vice versa. Very often a chain reaction is detected, with damage to several nodes.
In such cases, it is important to discover the cause before taking action. Otherwise, there is no guarantee that after replacing one or another element everything will not happen again.
As mentioned earlier, you cannot check the operation of the generator on the VAZ 21074 using the old method of tilting the terminals. Don't forget about the injector and ECU.
It is better not to buy a used generator, but to buy a new one. But even in this case, you need to check the voltmeter readings and battery charging more often than usual. Alas, even new factory products are sometimes defective. Therefore, it is better to play it safe, thereby protecting all electronics, injector, battery and other devices from overvoltage. This is really important.
If you don’t have confidence in your abilities, then it’s better to immediately contact a workshop. And one more important detail. If any element installed in the generator fails, service centers first of all offer its complete replacement rather than partial replacement. Of course, this approach has its advantages, but when the warranty period has expired, it is very expensive.
The housing of the voltage regulator unit becomes very hot during operation. You need to keep the wires away from it.
To regularly monitor fluctuations in voltage and battery charge level, you can purchase an on-board computer that includes a similar function. In addition, this will be useful for many other components of the VAZ 21074. Such a device is indispensable on cars where an injector is installed.
Generator 2107-3701010
For lovers of various additional equipment, an even stronger “gene” is required. They can recommend installing a device from a VAZ 2107i. This unit produces 80 amps, which is sufficient to operate any electrical systems added by the owner. When purchasing such a generator, keep in mind that there are several varieties. For installation on a VAZ 2106, only model 2107-3701010 is suitable; any generators of this series can be installed on carburetor “sevens”.
It is advisable to modify the device for installation on the “six”. To do this, the relay regulator is replaced with a similar one from G222. The connection is completely similar to working with a figure-of-eight generator.
Conclusion
. Initially, rather weak generators were installed on the “sixes” and “sevens”. But, in the process of technology development, their power was no longer enough to provide adequate power to the car. So the question arose, which generator is better to install on the VAZ 2106 and 2107. Fortunately, there is plenty to choose from. The next generations of devices are perfect for old Zhiguli cars after a little modification.
Correct operation of the generator 2106 2107 ensures the proper functioning of all vehicle devices. According to the attached operating instructions, the technical condition of the VAZ 2106 generator is checked at least once every 4 months. Failure to pay attention to this requirement leads to wear and tear of the device. As a result, the question of which generator is better to install on the VAZ 2106 becomes relevant.
Malfunctions and their elimination
Let's start with the simplest and most obvious. From the work of indicators. These are the difficulties that may arise.
Constantly lit indicator (even when the ignition is turned off)
To eliminate the problem, you will need to replace the diode bridge with a new one. The reason for this was a short circuit on it. You can try to repair it, but this requires knowledge. Replacement cost is low.
Devices and sensors do not work
To do this, you will need to check all wiring and contacts. Often the cause of such an incident is the fuse box. It is necessary to check the voltage in all areas to determine the location of the fault. If the cause is the generator, then you need to check the belt tension and the stability of the pulley. Next, the “chocolate”, brushes, and diode bridge must be checked.
The battery indicator is always on when the ignition is on
You need to start by checking the battery. In this case, the inspection is carried out both on a cooled down car and on a warm one. If overheating and boiling occurs, then you need to check the voltage regulator unit on the generator and check the wear of the brushes. We must not forget about the belt, pulley and bearings. To avoid unnecessary work, you need to measure the voltage between the generator and the battery. Most often this is a signal that the battery is not charging.
The indicator flashes
If in the previous case there is often not enough charging, here, on the contrary, there is a recharge. The regulator and brush assembly need to be replaced.
Noise
The noise may be caused by worn bearings, excessive tension or loosening of the belt. You need to make sure that all fasteners are secure and the gaskets are intact. Less commonly, the cause of this is a malfunction of the rotor or stator. And, again, the same generator brushes can make the most unpleasant sounds. In this case, they are changed or wiped with gasoline.
Voltage drops
This is best seen at night. If the headlights burn unevenly and constantly change light intensity, then the voltage regulator needs to be replaced.
Standard option
Which generator is better to install on VAZ 2106 and 2107? The question is quite complicated. It needs to be considered starting with the most common option. After all, any manufacturer will say that it is the standard version that should be installed on the car. Let's look at the features of the standard version G221.
In this type of relay generator, the regulator is installed separately from the brush assembly. This makes it easier to troubleshoot some problems to some extent. The advantage is the ease of installation, there is no need to adjust the wiring for connection, everything is done according to the standard scheme. But such a generator is low-power; it produces a charge of a maximum of 42 A, which is not enough for most modern batteries.
From all this, we can conclude that a standard generator is certainly good. But, if you have additional devices, it is not very profitable to use it. It is best to choose a more powerful option.
This generator is intended for use on Niva cars. It is capable of delivering 50 A of current, which is quite enough for full-fledged electrical work. It differs from a standard “six” generator in the presence of a built-in regulator relay. Here it is assembled into one unit with brushes. Therefore, to install it on a VAZ 2106, you just need to make some minor modifications. This electric machine is installed on 2107 without any special interference or modifications.
There are several ways to refine such a generator. The easiest way would be to install brushes from the G221 generator. They fit perfectly in place of the relay assembled with the brush assembly. No modifications are required, this allows you to install such a generator, even for people without special skills. It is possible to install the G222 with a standard regulator, but to do this, you will have to redo the generator connection diagram. Otherwise, nothing will work out.
Completion
The most typical and common breakdowns were presented. For correct diagnosis in serious cases, special stands are needed, which are present in many workshops. It should be noted that sometimes the cost of such repairs can be equal to or even exceed the price of a new generator. Therefore, repair is not always the answer.
From the text it becomes clear that there are no significant differences between the injection VAZ 2107 and the earlier carburetor version. The same applies to the modification of the VAZ 21074 and all others.
Generator manufacturers claim that the generator is designed for 200-250 thousand kilometers. After passing the barrier of 100-150 thousand, it is necessary to conduct a thorough inspection and lubricate all mechanical connections.
VAZ 21074 engine control system diagram
Wiring diagram of electrical connections of ECM VAZ 21074 - circuit elements. 1 — controller connector; 2 — mass air flow sensor; 3 — coolant temperature sensor; 4 — crankshaft position sensor; 5 — throttle position sensor; 6 — oxygen concentration sensor; 7 — speed sensor; 8 — ignition module; 9 — solenoid valve for purge of the adsorber; 10 — electric fan relay; 11 — electric fuel pump relay; 12 - main relay; 13 - fuse for the power circuit of the electric fuel pump relay: 14 - fuse for the power circuit of the main relay; 15 — fuse-link; 16-fuse protecting the constant power supply circuit of the controller; 17 - diode; 18 — idle speed regulator; 19 — nozzles; X1 - diagnostic block; X2 - connection block to the vehicle electrical system.
