Video “Detailed overview of the Niva car wiring diagram”
In the video below you can see a step-by-step overview of the electrical circuit diagram for a domestic SUV (the author of the video is stups87).
Scheme of the first VAZ-2121
Years of manufacture: 1977-1993 content-27.foto.my.mail.r…ail/mr.chvans/79/s-94.jpg With tail lights and instruments from 2106
Scheme VAZ-21213 (Carburetor)
Years of manufacture: 1993-2009 content-25.foto.my.mail.r…ail/mr.chvans/79/s-97.jpg The diagram shows a relay for rear fog lights, used since 2000, before that they were turned on directly from the latching switch.
Since 2004, the car was renamed from NIVA to LADA 4x4
Since 2013, daytime running lights began to be used: a 2-filament lamp is installed at the side lights in the side light section. When the ignition is turned on, the power comes to the 21W thread (running lights mode), when the external lighting is turned on, the power switches to the 5W thread (side lights mode).
Schemes of the carburetor mixture control system are here www.drive2.ru/b/2168677/ There is a little information about the devices at the end of this article www.drive2.ru/b/1087776/
No more information available. I'll add what I find out. If you have anything to add or correct, write in the comments.
Car chassis
The suspension architecture here is the same as that of the three-door Niva. The main difference between the Niva and other Soviet and Russian SUVs was the lack of a frame. The car has a monocoque body made of high-strength steel.
At the front there is an independent suspension with coil springs, wishbones and hydraulic shock absorbers. At the rear there is a dependent lever design. The steering was initially not equipped with power steering, but with the release of Urbana the situation changed for the better. Brakes are discs at the front and drums at the rear. The brakes on the Niva are of average quality. There are generally enough of them for the city, the owners say.
How does this car behave on the move? As reviews note, the car has a fairly comfortable suspension. The car handles potholes well, because unlike other SUVs in the USSR, there are no springs even at the rear. In addition, the long wheelbase adds comfort. But there are also disadvantages. Since the car has a high center of gravity and a soft suspension, it rolls a lot when cornering. Owners also note strong play in the steering wheel. All VAZs of the classic family have this feature. There is no point in trying to improve the steering. It's expensive and hard. The suspension is modified only for the purpose of lifting, to install wheels of larger diameter.
What is included in maintenance
The scope of work performed during scheduled maintenance can actually be divided into two parts.
- Routine and diagnostic work. The cost of such work is usually understood as the cost of maintenance; the full list is contained in the car’s service book. This list is for a Chevrolet Niva here, for a classic or long Niva here.
- Elimination of faults identified during diagnostics. The cost of such work is paid additionally, is difficult to predict and increases with the age and mileage of the car.
Thus, we can talk about maintenance in an expanded sense, which in fact corresponds to how most car owners preventively maintain their cars.
The scope of work performed during maintenance changes with the age and mileage of the vehicle. For newer machines, the emphasis is on issues related to “running in” - running in the surfaces of interacting elements - and monitoring the fastening elements. In this sense, 1 maintenance service at a mileage of 1500-2500 km is extremely important. For cars older than 3-4 years and with a mileage of more than (in the case of the Niva and Chevrolet Niva) 40-60 thousand kilometers, the emphasis during maintenance shifts to the area of diagnostics and identifying parts that begin to show signs of wear or other mechanical damage.
There are jobs that Niva owners need to pay special attention to: lubrication (injection) of cardan shafts and adjustment of hub bearings. Lack of lubrication in the cardan leads to vibrations, and driving with incorrect clearances in the hub leads to replacing bearings and the hub itself, paying for tow truck services, etc.
Plus half a meter: development history and design features of the VAZ-2131
It would seem that everyone enjoys the good old three-door Niva, which has survived on the assembly line to this day. Cross-country ability, accessibility, low cost - these advantages of the “shorty” have carried it through more than four decades, in spite of environmental standards and EuroNCAP tests. However, many motorists back in Soviet times were forced to abandon the three-door car because of its, to put it mildly, not the most outstanding practicality. A short wheelbase, only one side door on each side, a frankly small trunk - the Niva was not an alternative to the Zhiguli, forcing the potential buyer to make a choice in an “either-or” format. After all, when choosing cross-country ability, it was necessary to obviously sacrifice the cargo-passenger qualities of the car. And that is why, over time, the traditional “twenty-first” was supplemented by a long-wheelbase five-door version, which many owners affectionately call the “crocodile”. Today we will recall the history of the development and design features of this model.
Start
In the nineties, VAZ was working on the “last hope” for a single-volume vehicle - that is, an all-wheel drive minivan based on the Niva, and this modification was not planned and, like many other things, appeared by accident. Rather, it was a research project, the purpose of which was to obtain an answer to the question of whether it was possible to make something completely new for the plant on the basis of a regular Niva - for example, a minivan. At the same time, the safety margin of a regular Niva was unknown. More precisely, after a number of victories and achievements of the VAZ-2121, it was clear that this is a successful and strong car, but will it withstand the one and a half times the load associated with turning into a seven-seater car with a monocoque body?
To answer the question posed, from a pair of serial three-door bodies, two frames of future five-doors, extended by 500 mm, were welded, and only half was taken from each of the “sources” (front and rear, respectively). Each of the prototypes received a very pretentious name - Consul and President. These running models differed in that the Consul had narrow rear doors that made it possible to load sandbags into the body to simulate the load, while the President did not have them.
In the photo: a prototype codenamed “Consul”, distinguished by the presence of a pair of narrow doors-leafs
The tests were successful, which surprised the factory workers themselves. After all, unexpected positive conclusions regarding the safety margin of the ordinary Niva allowed the Togliatti people to begin developing the VAZ-2120, known as Nadezhda.
At this time, pilot industrial production (EPP) was just launched at VAZ, but the “twentieth” model was still frankly crude - that is, it was at the stage of “plasticine” and modifications, being not even ready for small-scale production.
Twenty nine and other numbers
That is why VAZ came up with the idea of not only making a single-volume all-wheel drive with an original layout on a modernized chassis, but also launching production (albeit in small batches) of an elongated Niva, which could become a real dream for a summer resident. After all, an additional half meter in the base could make this car spacious and practical, and the very fact of the simultaneous existence of a “shorty” and a long-wheelbase version was a common occurrence for most SUVs, including such grandees as the Mitsubishi Pajero, Nissan Patrol, Land Rover Defender and even “His Majesty” Gelendvagen."
Five doors and a German license plate – why not a “cube”?
Thus, the search project gradually turned into a small-scale car under the index 2129. It differed from the familiar five-door “crocodile” by the absence of a pair of rear doors - that is, by lengthening the base and moving the rear seat, the designers retained the previous “low-door” body. Subsequently, modification 2130, distinguished by an enlarged gas tank, was added to the commercial copies of the “twenty-nine”.
Created in OPP: very interesting modifications were developed in the pilot industrial production of VAZ
To be fair, we note that it was not very convenient for rear passengers to get in and out (the front doors remained “short”), but in terms of interior space, this car was comparable to ordinary Zhigulis and even slightly superior to them, which is for an SUV with permanent all-wheel drive was a good achievement – especially compared to the “shorty” one.
“Twenty-Ninth” bore the unofficial name “Cedar” and was produced in small series at AvtoVAZ OPP in 1992-1994, and on its basis several copies of a commercial version called “Utility” were made.
The shortcomings of the three-door version gave rise to the development of a five-door version under the symbol 2131, where the standard front doors were supplemented by rear ones with a vertical window and a small window in the new sidewall. Another difference between the five-door and the regular Niva is the step on the roof that hid the welds.
Here the roof insert is particularly visible. Body torsional rigidity – 7400 Nm/deg. The “three-door” has 8900 Nm/deg, which is even more than the VAZ-2108!
Three quarters at the back: the five-door version seemed too long to many, although it was only that way compared to the “shorty” one
"Thirty-first" from Tolyatti
Unlike the “thirty-first” Volga from Gorky, the Tolyatti car received a long wheelbase compared to the original Niva, but retained the utilitarian essence of the VAZ-2121.
Features of electrical equipment
The electrical circuit of the VAZ model 21213 has certain differences with the model 2121, in particular:
- 21213 vehicles use more modernized foot fuses in the fuse box. Of course, the use of such devices led to the fact that the block site also became different.
- The power supply system of these vehicles additionally includes an idle speed saving device. For this option to work properly, another connector with wiring was added in the engine compartment.
- Another difference is that these cars use a non-contact ignition circuit, the main element of which is a microcontroller.
It should be noted that differences in the Niva circuit may lie both in the generator units and in the electrics themselves.
Differences in generators
In any case, the differences in the wiring diagram of the models will primarily depend on the power unit - carburetor or injection.
The main differences in carburetors:
- models 21213 use the generator unit model 371.3701;
- in the engines of models 21214, the manufacturer decided to install a more powerful generator device; it is marked with the numbers 9412.3701 (video author - Sergei Chekhonin).
And although these generators are different, they have certain similarities in design. In any case, it is a synchronous AC device. In addition, these units have a built-in rectifier and output voltage regulation mechanism.
Wiring differences
If we talk directly about wiring, then depending on the car model, it may also have differences. It should be noted that these differences greatly simplify do-it-yourself maintenance and repair of the system. As for injection modifications of SUVs specifically, in this case the system is equipped with three outputs intended for installing electronic ignition.
In addition, 21214 cars use two ventilating devices that perform the function of cooling the radiator assembly. Accordingly, due to the use of additional fans, the wiring also underwent, albeit not significant, differences. Of course, they are not fundamental.
