The VAZ 2109 car for many years remained one of the most popular in the country. Not just popular, but also prestigious. In the social hierarchy, the owners of nines were not much lower than the owners of used Cadets and Jetts. One could argue with the reliability of the car, but since there was no alternative, the car filled the entire CIS and was even assembled by the nodal method in Finland, but this has little to do with the 2109 model.
Wiring diagram VAZ 2109
Like the whole car, the electrical equipment was not at the highest level, so the owners of nines should know the VAZ 2109 wiring diagram thoroughly. To do this, we have brought a factory diagram in good resolution, which can be used with amendments for the changes made from time to time.
This is a canonical nine diagram with factory markings and explanations. The schematic diagram is quite simple, but the electrical appliances themselves caused difficulties, the problems with which we will talk about.
Major problems with wiring 2109
The biggest problem in the electrical equipment of the VAZ 2109 was the low quality of the components and the unsatisfactory build quality. Despite the fact that Togliatti, by tradition, blames suppliers for all mortal sins, we eventually have to take the rap, and as ordinary users, we should not be at all interested in why the spirals on the twin-filament lamps of the taillights constantly burn out. Also, we, in principle, do not care which factory made the housings for the fuse box - we only see the inadequate operation of the electrical equipment, when the right turn is turned on when the brake pedal is pressed.
And there are a lot of such examples. If the plant is not sure about the quality of the components, why then put them on the car. Therefore, rhetorical questions only lead to unnecessary vibrations of the air, and the problem is not solved. The above problem with stops can be solved quite simply:
The short circuits of the tracks of this board occur due to contamination of the contacts and tracks. Then the signal applied to the stop lamp can simply be redirected to the direction indicator lamp. This is fundamentally solved by replacing the entire board with a new one, but the new strip will not last as long as we would like due to poor sealing of the lamp from inside the luggage compartment. It seems to be a trifle, but we waste precious time on solving trivial problems that are solved at the production level with the correct, not VAZ approach.
Improvements and fixes of factory errors
In the light of the above, the breakdown of the electronics control unit is very characteristic of the nine. The reason is very simple - its body simply passes water, dust and moisture in the form of condensation. Its very placement on the air intake shelf is not entirely clear, but there are more significant disadvantages that can be eliminated with your own hands. The factory has provided a tiny groove for water to drain from the hull, but it is constantly clogged, the hull fills with water, and the control unit slowly and surely dies. It is not cheap, so such negligence of the designers defies explanation. There are two ways out of the situation - to constantly clean the water drainage channel, or to change the unit at least once a year.
It is also worth paying attention to the fact that the power wiring on the lower shelf of the radiator is constantly exposed to high temperatures. In addition, in this place it is not protected from water and dirt in any way. This is also a difficult to explain point. Harness oversights include the harness under the mat next to the driver's seat. Moisture constantly accumulates there, and in order to remove it, you need to dry the floor, inevitably pulling this tourniquet. Of course, you cannot solve such a problem on your own - there is too much work to tighten all the wiring in the car.
It is worth paying special attention to the power terminals on the generator. They very often loosen, heat up, spark and melt the wiring. But this is not the worst thing. The wires can short-circuit, but here it already smells burnt. Therefore, do not be lazy, but as often as possible check this unit for tightening the terminals.
Insulation of wiring harnesses 2109
For the sake of isolating the harnesses, no one will disassemble the half of the car, but on occasion this must be done for your own safety. Using the diagram that we placed at the beginning of the article, all the work will not take much time, but you will be sure of the quality of the wiring insulation. To do this you will need:
- Corrugated hose for electrical wires.
- Insulating tape.
- Cleaner for wires.
Before packing the old wiring into the sleeve, treat the wires with a cleaner, which is sold in aerosol cans. Further, following the instructions and checking the wiring diagram, we act like this:
- Disconnect the battery
- Disconnect the terminals and remove the harness.
- We treat it with an aerosol.
- We carry out a visual check of contacts.
- We put the tourniquet in the corrugation.
- We fix and seal the entry points of the bundle into the corrugation.
- We put the finished cable in place.
- Referring to the diagram, we connect the terminals.
Particular attention should be paid to sealing the harnesses where they come into direct contact with water or hot surfaces. Also, when assembling, pay attention to the integrity of the blocks and the condition of the contacts and terminals.
Thus, by spending very little time, we save the wiring and get rid of unnecessary problems with short circuits. Follow the wiring and good luck on the road!
