Operating rules
If at some point the cigarette lighter stops working, what will happen? All your additional equipment will no longer receive power. As a result, you will be left without a media center, navigator, will not be able to charge your phone, and so on.
There are several important rules that are recommended to be followed when operating your VAZ 2109 equipped with a cigarette lighter.
- It is not recommended to connect compressors directly through the cigarette lighter, which many people use today to pump up their tires on the road. It is better to connect it directly through the battery. Such devices consume a lot of energy and create an impressive load on the vehicle's electrical wiring. At some point it may melt or a fuse may blow.
- Do not try to insert devices whose connectors are larger than the size of the cigarette lighter into the cigarette lighter socket.
- Do not connect metal objects. Also, when connecting the device, do not use equipment that has metal rings on the body. They often fly out, resulting in a short circuit. At best, your battery will quickly run out.
And what's behind it?
Fastening the wires
Before connecting the recorder, you need to decide how the wires will be attached. There are two installation options:
- hidden installation. The wires are hidden under decorative trim or the dashboard. It is necessary that a little wire remains near the recorder, which will allow it to be rotated freely; When wiring is hidden, the wires are hidden under decorative trim or the dashboard
- open installation. In this case, the wire is not hidden, but is fixed to the ceiling and side pillar using plastic brackets. Since these brackets have Velcro, over time the reliability of the fastener weakens and the wire may fall. The wire is in plain sight, which is not very convenient and ugly
How to use it correctly
What happens if the cigarette lighter breaks? In this situation, the additional equipment installed on the machine will not be able to receive electricity and, therefore, will stop working.
To prevent this from happening, when using a cigarette lighter, you just need to follow a few fairly simple, but very important rules.
First of all, you should not connect the compressor, which is currently used by many car owners to pump up wheel chambers, directly into the connector, that is, directly. It would be more correct to power it from a battery. The thing is that these types of devices require a lot of voltage to operate and, therefore, create high loads on the wires. As a result, the latter often overheat and even melt. This most often happens on machines where fuses are replaced by jumpers.
Under no circumstances should you try to insert too thick plugs into the socket - they will damage the connector elements, some of which are made of porcelain.
Main nuances
So:
- Before connecting the car radio, you must carefully study the instructions, since incorrect actions will lead to equipment breakdown or even fire.
Connecting a VAZ 2109 car radio
- In modern players with automatic tuning, due to the wiring features of domestic cars designed for older models, settings may fail when turning the ignition key.
Note: therefore, it is also necessary to study the features of VAZ cars.
Causes
Practice shows that there are two main reasons for cigarette lighter failure on a VAZ 2109.
| Cause | Your actions |
| Fuse burned out | You should look for the fuse inside the mounting block. Depending on the year of manufacture of your nine, the fuse for the cigarette lighter is designated F4 or F10. If it burns out, remove the fuse from the mounting block, replace it with a new one and watch to see if the situation repeats. If it burns out again after a while, this indicates a shortening in the wiring. The peculiarity of this fuse is that it is responsible for several devices connected to it at once. Therefore, check the condition of the remaining elements. Maybe it's because of them that the fuse melts, and not because of the cigarette light |
| Poor contact | It may be partially damaged or absent completely. Remove the cigarette lighter, check whether the wires are seated properly on the terminals, and whether the device is loose. A visual inspection is good, but it’s better to be more precise. Take a multimeter, turn it into voltmeter mode and check what voltage is between the black and red wires. If the device shows 12 volts, look for the source of the problem in the cigarette socket. If there is no voltage, there is a break in the wiring. |
Cigarette lighters are designed for a certain load, exceeding which leads to failure of the unit. When developing the VAZ 2109, engineers at that time could hardly have taken into account that the cigarette lighter would be used to connect portable compressors, powerful multimedia centers and other energy-consuming equipment.
The cigarette lighter doesn't work
Why it breaks and what to do
Experts say that there are only 2 reasons leading to cigarette lighter failure:
- fuse blown;
- loss of any contact.
In the first case, you will need to replace the melted protective device with a working one. It is located directly in the mounting block. So, if you have:
- low instrument panel (that is, an older car), then this is F4 or F10;
- high panel – 11.
It is worth noting that in this situation the following will also stop working:
- rear window heating element;
- socket for extension cord.
In early cars the fuse rating was 20 amperes, in new ones it was only 16.
By the way, the stove is powered through F7 in old models, 4 in new ones.
The blown fuse is removed with the battery disconnected and replaced with a new one. It is important to monitor his condition for some time. If it burns out again, then you should look for the cause in a short circuit.
If contact is lost, you must:
- inspect the cigarette lighter socket;
- make sure that all wires are holding well;
- use a tester to check the voltage (black and red wires - should be 12 volts).
If everything is in order, then you should look for the problem in the socket. If there is no electricity, inspect the wiring for integrity.
It is important to understand that the cigarette lighter itself has a certain margin of safety, and not every load will pass without leaving a mark on it. If the norm is exceeded, the risk of breakdown increases. Therefore, you need to be more attentive to the selection of gadgets, giving preference to the most energy-saving ones.
Guide to replacing an old unit with a new one
We will not describe the replacement procedure itself, since it is identical to that performed when repairing a power supply unit. You just need to dismantle the device of the old model, taking out all the parts and elements from it in advance. If you decide to replace an old-style device with a new one, you should take into account that the new type of units does not have a relay for activating the engine cooling fan.
Since the cooling fan will always be running when you replace the unit, there are a few steps you can follow to ensure that it only turns on when needed:
- Disconnect the negative terminal from the battery.
- Find a ventilation device. It is located in the impeller area.
- Remove the black wire from the fan power connector and insulate it.
- A sensor is connected to the fan, which sends commands to activate it. The black and white wire must be disconnected from this controller and also insulated.
- There will be two terminals left on the controller. They need to be connected to the power connector of the ventilation device using a wire.
- Reinstall the cable with the contact from the battery. These steps will ensure that the fan is activated when necessary.
Design and purpose of the cigarette lighter
The cigarette lighter in VAZ 2108, 2109 and 21099 cars is used:
- for its main purpose, that is, for lighting cigarettes;
- for powering devices such as video recorders, navigators, radar detectors, etc.;
- for charging mobile gadgets, players and tablets.
As for the device, the cigarette lighter consists of:
- a housing in which all the constituent elements are enclosed;
- insulator;
- terminals for connecting to the power circuit;
- holder contacts;
- heating element - the main component of the device;
- metal legs fixing the element;
- a spring that knocks the cigarette lighter itself out of its seat in the event of full heating.
Scheme
The entire line of VAZ 2109 cars can be divided into two branches - those produced before 1998 and those produced after 1998.
Older cars are equipped with fuse blocks whose marking is 17.3722. This power supply consists of a housing and an engineering board. Wire contacts, fuses and relays are soldered to the board.
Newer versions of nines, the production of which began in 1998, here the power supply is marked 2114-3722010-60. Here we are already seeing fuses.
The required mounting block is also located the same everywhere - in the engine compartment opposite the driver's seat, almost under the windshield.
Location
Differences
Are there any differences between the old and new versions of the power supply? Of course. They are as follows:
- The parts of the mounting block are marked differently;
- The fuse ratings are different;
- The new power supply does not have a relay for the cooling system fan motor and a time relay for the rear window washer device.
The relationship between a car lighter and a radio in VAZ cars
A common problem for all VAZ car models (2114,2115, 2109, 2110, 21099), this is the same voltage supply circuit to the car player, with output to one common fuse, which is additionally responsible for the power supply:
- cabin heater (stove);
- cigarette lighter;
- heated rear window;
- the radio itself.
Thus, a failure as a result of a break, short circuit, etc., in the electrical circuit of any device leads to the shutdown of the rest.
Since the tape recorder is equipped with an additional safety device, coming after the main one, after checking them and replacing them, if necessary, the operation of the head unit, like all the above-mentioned equipment, is restored. If only the cigarette lighter (without the player) resumes operation, the cause of the malfunction should be sought in the car radio itself (which is the topic of a separate article).
Calculation of electrical circuits
To calculate a circuit means to find all the currents in it. There are different methods for calculating electrical circuits: Kirchhoff's laws, the loop current method, the nodal potential method and others. Let's consider the application of the loop current method using the example of a specific circuit.
First, we select the contours and designate the current in them. The direction of the current can be chosen arbitrarily. In our case - clockwise. Then for each circuit we will compose equations according to Kirchhoff’s 2nd law. The equations are composed as follows: The circuit current is multiplied by the circuit resistance, and the products of the current of other circuits and the total resistance of these circuits are added to the resulting expression. For our scheme:
The resulting system is solved by substituting the initial data of the problem. We find the currents in the branches of the original circuit as the algebraic sum of the loop currents
Whatever circuit you need to calculate, our specialists will always help you cope with the tasks. We will find all currents using Kirchhoff's rule and solve any example of transient processes in electrical circuits. Enjoy your studies with us!
