Tuning the dashboard on a VAZ 2109, why the dashboard and backlight do not work and do not light up, pinout

The external lighting switch in the electrical equipment of VAZ 2108. 21081, 21083, 2109, 21091, 21093, 21099 cars turns off and on the side lights, rear license plate lights, engine compartment lamp, low beam headlights, through it voltage is supplied to the fog lamp switch in the rear lights . It is installed in the instrument panel.

External lighting switch key positions

The starting position is “0” (the circuits are de-energized).

Position - “1” (the circuits of the dimensions in the front headlights and rear lights, the engine compartment lamp, the rear license plate lights, the fog lamps in the rear lights are powered). The indicator lamp for turning on the external lighting on the instrument panel lights up.

Position - “2” (low beam headlights).

External lighting switch connections diagram No. 1 (VAZ 2108, 2109, 21099 cars up to 1998 with mounting block 17.3722)

External lighting switch connections diagram No. 2 (VAZ 2108, 2109, 21099 cars after 1998 with mounting block 2114)

Notes and additions

— The external lighting switch of VAZ 2108, 2109, 21099 is always energized, even when the key is in the “O” - “parking” position in the ignition switch. Therefore, after stopping the engine, it is necessary to return its key to the “0” position - the original position, so as not to discharge the battery with the lights or low beams on.

External lighting switch for VAZ 2108, 2109, 21099 cars removed from the instrument panel

— There is a backlight on the switch button, which lights up after turning the ignition key to the “I” — “start” position.

— In addition to the above-mentioned contacts of the external lighting switch, there are several more installed in it, intended for circuits for switching on the dimensions separately on the right and left sides of the car (for VAZ 2108, 2109 of the first years of production).

— Marking of external lighting switch 581.3710.

— In addition to the circuits listed above, the exterior lighting switch supplies voltage to the interior lighting circuit of the vehicle.

More articles on electrical equipment of VAZ 2108, 2109, 21099 cars

Panel tuning options

If you decide to tune your instrument panel, then most likely you will be interested in knowing what options exist for doing it. The tuning shield, as you know, pleases the driver’s eye, so this issue is relevant for many car owners.

Dismantling the shield

To tune the dashboard, you first need to remove the device itself.

To do this, you only need to disconnect eight fasteners; to do this, you can use a regular knife:

Improvement and replacement of backlight

To perform backlight tuning on a VAZ 2109, the lighting sources must be replaced after removal; in this case, it is advisable to use diode bulbs, and if necessary, the scale itself can be modified.

The tuning procedure includes the following steps:

First, dismantle the standard insert where the scales are located. Remove all the arrows and set them aside, then make corresponding holes for them in the new pads. To prevent the arrows from sticking when operating the instruments, the holes can be made wider.
Next, you need to remove all the standard lighting sources - just dismantle the entire circuit and install diode devices instead of the old light bulbs. When installing new sources, observe the polarity, since if it is confused, this will lead to the inoperability of the device as a whole.
Once the lamps are installed, you can begin to refine the scales. Take the new pads and, using fluorescent paint or a marker, paint the numbers on the scales. Such a marker or paint will be required so that when the instrument is illuminated with LEDs, the numbers glow more brightly and stand out.
After the backlight tuning is completed, you will need to carefully install the circuit and install new overlays on top of it. When installing, be careful not to damage the panel elements.

↑ Position of the ignition key in the lock

In the ignition switch, the key can occupy the following positions:

0 — all consumers are turned off. The key does not come out. Steering is not locked;
I — ignition is on. The key does not come out. Steering is not locked;
II - ignition and starter are on. The key turns fully clockwise, overcoming the force of the spring. The steering is not locked. In this position, the key is not fixed; for the starter to operate, it must be held by hand. Immediately after starting the engine, the key should be released, and it will return to position I under the action of the return spring. The ignition switch has a built-in locking device that will prevent the starter from being turned on while the engine is running. You can only turn the key to position II again after you have returned the key to position 0;
III - ignition is turned off. The key is removed. When the key is removed, the steering is locked. To turn off the anti-theft device, insert the key into the ignition switch and, turning the steering wheel slightly left and right, turn the key to position 0.

What to do if the instrument panel on a VAZ 2109 does not light up

Types of panels
Why doesn't it light up?
Popular faults

We recommend: Tightening the cylinder head of VAZ 2109

When the instrument panel on a VAZ 2109 does not light up, this is one of the common malfunctions of this unit. To fix a problem, you first have to find the cause of its occurrence.

Tidying up nine

Types of panels

Instrument panels on the VAZ 2109 are of at least three types:

Low panel;
High panel;
Electronic panel on nines with Europanel.

Europanel

On versions with a low panel, failure of the entire panel is extremely rare. This is due to the fact that here the speedometer and econometer are equipped with mechanical drives. Therefore, it is unlikely that they will fail along with the electrical component.

Dashboards with a high panel do not have an econometer, but the speedometer is also based on a mechanical cable drive.

Why doesn't it light up?

If suddenly electrical appliances and indicator lamps on the dashboard stop working, certain actions must be taken.

First, remove the cover of the mounting block and make sure that the fuse is intact. The fuse markings are located on the inner surface of the cover. You should look for fuse F16 or F5, depending on the year of manufacture of your VAZ 2109.
If the fuse is intact, be sure to check whether the contacts of the fuse you are looking for have not oxidized. It is not uncommon for shields to fail due to broken contact.
Check if there is power to the dashboard. To do this, you will need a warning light and the ignition on. Disconnect connector X4 in the mounting block and check for voltage at pin 3. The disadvantage of the VAZ 2109 design is that when it rains, the mounting block immediately becomes wet. This causes oxidation of the contacts in the pads, which causes the electrics to stop working. Sometimes not only the contact is oxidized, but also the board of the Nine mounting block.

If none of the above actions yielded results, you will have to be disappointed. After all, now you need to remove the dashboard and check the condition of the wiring, contacts, and negative connections. Here it is better to trust a professional electrician or set aside a whole day to troubleshoot problems yourself. There is no need to rush here.

Where did the backlight go?

Popular faults

If we talk about the dashboard of VAZ 2109 cars, then they are characterized by certain problems. We will tell you about them, and also tell you how to act correctly in a given situation.

Fault type	Your actions
Gasoline level and temperature indicator does not work	In most percent of cases, this situation occurs due to breakdown of devices, sensors of these devices, or an open circuit of the power supply. Therefore, first check the circuit for continuity, make sure that the fuses have not blown. If this is not the case, check whether the gas level and temperature sensors are working. Only if none of the actions allowed you to get rid of the breakdown, you can begin to replace the devices themselves. No options, the problem lies in them
When the fuel tank is full, the arrow points to zero	If you have worked on the fuel level sensor, the fault most likely lies with you. When manipulating this device, the float limiter is often knocked down. Either the limiter is installed incorrectly or adjusted, causing the resistor winding to end. To resolve the problem, remove the sensor and then adjust the limiter again
The fuel gauge needle regularly jumps and ends up at zero	Here, most likely, the resistor has weak contact with the current collector. Another possible option is that there is a break in the resistor. To resolve this situation, we recommend replacing the hot level sensor with a new measuring device
The fuel level lamp is constantly on	If this lamp is constantly on, there is probably a short circuit in the fuel level sensor supply wiring to ground. Another option is that the sensor’s flexible bus is shorted to the fuel intake pipe. You will have to disassemble the device to align the bus and get rid of the resulting short circuit
Indicator lamps do not work on the dashboard	There is a high probability that the light bulbs have simply burned out, or they are poorly held in their seats due to loose contact. Replace the bulbs, but first try tightening the contacts. Traces of oxidation may be detected. When cleaned, the light bulbs can work normally again. Also, do not exclude the possibility of wiring breakage or oxidation of the tips of the supply wiring. Try going over the wires with a tester, cleaning the contacts if necessary.
The speedometer does not work, the flexible shaft is noisy	In such a situation, you will have to change the speedometer drive cable or replace the entire speedometer assembly. But before you bother so much, check that the fastening nuts of the tips are tightened correctly and properly. The flexible shaft may make noise during operation due to deformation or violation of the permissible bending of the shell of less than 10 centimeters during installation

We recommend: Checking the Hall sensor and replacing it

Last resort - complete dismantling

The instrument panel of the VAZ 2109 is not so complicated that you cannot figure it out on your own. But in the absence of experience, it is better to entrust the repair to specialists, or to enlist the support of a partner who understands this matter.

How to repair the speedometer drive

Now we will talk in more detail about dismantling and repairing the drive. It often needs to be repaired if the O-ring begins to leak oil. To repair this unit, follow the instructions:

Using a socket wrench, unscrew the bolt holding the speedometer drive housing.
Then pry it up with a screwdriver and remove the drive.
Inspect the driven gear; it is made of plastic and may show signs of wear. In this case, it is best to replace the part.
Check the rubber seal. If signs of wear are visible on it, replace it.
Then evaluate the quality of the seat for the cable end. It should also not be worn or damaged.
Look at the drive mounting location on the gearbox; if there are oil leaks there, the O-rings must be replaced. They are located on the body.
If you decide to replace these rings, you will need to first remove the driven gear and then push out the seal.
Soak these parts in kerosene. If they are not worn out, replace them. Also wipe the remaining parts with kerosene and put them in place.

Instrument panels VAZ VDO (LED)

You can install a more beautiful and convenient panel with LED indicators, the so-called VDO panel. Here VDO is the panel manufacturer.

Connecting VDO on a Kalina car
1	Pink-white	To electric power steering
2	Blue and white	To the hazard warning indicator
3	Gray-blue	To emergency oil pressure sensor
4	Brown blue	To the parking brake switch
5	Yellow-blue	To the immobilizer control unit
6	Black	To the airbag control unit
7	Yellow	To the outside light switch
8	Blue	To the right turn signal switch
9	Blue with black	To left turn signal switch
10	White-blue	TO ECU
11	.	To brake pad wear sensor
12	.	To seat belt sensor
13	Black	To the traction control control unit
14	Red-blue	"RESET" key on the steering column switch
15	Pink-blue	To brake fluid level sensor
16	Black	To ABS
17	Green	To the high beam switch
18	White	To the instrument cluster light control
19	Brown	Panel weight
20	White-red	Terminal "30"
21	Orange	Terminal "15"
22	Yellow-red	To fuel flow sensor
23	Orange-white	MK key "forward"
24	White black	MK key "back"
25	Black and white	Outside temperature sensor (-)
26	Yellow-green	Outside temperature sensor (+)
27	Pink	Fuel level sensor
28	Grey	Speed sensor
29	Green-white	Coolant temperature sensor
30	Brown-red	Tachometer (low voltage)
31	.	Official. Panel diagnostics.
32	Brown-white	Terminal “L” of the generator relay regulator

Functionality check

VAZ fuel sensor 2109

You can check for functionality using an ohmmeter or multimeter. After the device is removed from the gas tank, its contacts should be connected to the tester. We fix the float in one position and look at the indicators. The result should be 275-320 Ohms in the upper position of the float or 5-20 Ohms in the lower position. In the middle the resistance indicator is 100-130 Ohms. These figures are for a low instrument panel.

For a high panel these values are different:

If the device indicators correspond to the examples given, the device

it works, everything is fine with the sensor, it does not need repair or replacement. When significant deviations are present, it is worth checking the integrity of the wires. If they are ok, the sensor itself is faulty and needs to be replaced.

Why the instrument panel on the VAZ 2109 carburetor does not work

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malfunctions and troubleshooting methods for the instrument panel on a VAZ 2108, VAZ 2109, VAZ 21099

Possible malfunctions of control devices, causes of malfunctions and solutions

2. Replace the temperature or fuel level sensor3. Check wires, restore connections

The fuel gauge needle returns to the beginning of the scale when the tank is full

The float travel limiter is installed incorrectly (the resistor winding is running out) Bend the limiter 1-2 mm downwards

The fuel gauge needle moves irregularly and often falls towards

1. Weak contact of the fuel level sensor resistor with the current collector 2. Break in the fuel level sensor resistor winding 1. Bend the fuel level sensor current collector 2. Replace the fuel level sensor

The fuel reserve indicator light is constantly on

1. Short circuit of the sensor wire with ground 2. Short circuit of the flexible tire of the sensor with the fuel intake tube 1. Check and eliminate the short circuit 2. Bend the tire

Any instrument panel warning lights do not work

1. The lamp is burnt out 2. Insufficient pressure of the lamp socket contacts to the printed circuit board 3. The sensor contacts are oxidized 4. The lamp sensor is faulty 5. Break in the wires, oxidation of the wire tips 1. Replace the lamp 2. Bend the lamp socket contacts or replace it 3. Clean the contacts sensor 4. Replace sensor 5. Replace damaged wires, clean tips

Speedometer doesn't work

1. The nuts securing the ends of the flexible shaft of the speedometer drive are not tightened 2. The flexible shaft of the speedometer drive is broken 3. The speedometer mechanism is damaged 1. Check and tighten the nuts

2. Replace the flexible speedometer drive shaft3. Replace the speedometer or instrument panel

Private situations

General signs do not always indicate specific breakdowns. There may be exceptions.

If individual devices refuse to work, it is quite possible that this is their personal problem. You'll have to parse the specific pointer. It may have a cracked gear that needs to be replaced.

Also, why doesn’t the instrument panel of the VAZ 2114 work? If the fuel gauge and tachometer are capricious (either they function, or they don’t react at all), the contacts and the mounting block are normal - you need to do a small check.

Reset is pressed and held, and the ignition is turned on at the same time. Raised arrows indicate the need for further searches. Lifeless - that microcracks have appeared in the shield itself. You will have to remove it and examine all soldering and traces under a magnifying glass. In principle, these are all the main options. If calling all the listed components and parts did not lead to the revival of the instrument panel, your case is individual, and you will have to determine the situation in the company of an experienced auto mechanic.

Reasons for turning off the dashboard on the VAZ 2114

Turning off the dashboard lights does not bode well for either the driver or the car. Because this malfunction is usually followed by others. Therefore, the backlight should be repaired immediately.

Many drivers install LED lights instead of standard incandescent lamps.

You should also understand that if the lights on the dashboard go out, then the problem must be looked for somewhere in the on-board electrical system. This means you can’t do without a multimeter, a soldering iron and electrical tape. Here are the main reasons for turning off the backlight:

fuse burned out;
the light bulbs have burned out (or LEDs - in later VAZ 2114 models the panel is illuminated by them);
the wiring in the on-board electrical network is damaged;
The common contact board of the instrument panel burned out.

Let's consider these points in more detail.

Burnt fuse

80% of cases when the backlight turns off is due to a blown fuse. It is located in a safety block installed under the steering column of the car. Usually the fuse indicated in the documentation as F10 is lit.

In the block the fuse is located on the right and is designated as F10

We recommend: VAZ 2110 signal does not work

It is he who is responsible for the dashboard lighting, side lights and license plate lighting. On early VAZ 2114 models, fuse F10 was brown or red.

On early VAZ 2114 models, F10 fuses were brown

On later cars they started putting green ones. It is not difficult to understand that the fuse has blown. It's enough just to inspect it. The housing of a blown fuse may be slightly blackened or melted, and the conductor inside the housing may be severed. The faulty fuse is replaced with a new one. Typically this solves the problem.

Burnt out light bulbs

Dashboard lights operate under less than ideal conditions. They are regularly exposed to shaking, power surges in the car's electrical network and temperature changes. All this significantly reduces their service life. Especially if these are not LEDs, but ordinary incandescent lamps, which were equipped with the first VAZ 2114 models. There are a total of 19 lamps (but this number also varies depending on the year of manufacture of the car, and the number of lamps should be specified in the technical documentation for the car).

Another reason for light bulbs to burn out is their improper installation. This is most often observed on early VAZ 2114 models, where drivers decide to independently replace obsolete incandescent lamps with new LEDs, making some changes to the electrical circuit. Without proper qualifications, this operation is not so easy to perform. Here's what the sequence for replacing light bulbs looks like.

The steering column is lowered to the bottom position until it stops. Above it is the dashboard cover with four mounting screws. They are unscrewed with a Phillips screwdriver.
To remove the dashboard cover, just unscrew 5 bolts
To the right of the panel there is a row of buttons. Next to it there is another screw hidden by a plastic plug. It is pryed off with a knife (or a flat screwdriver). The screw is unscrewed.
Now you need to remove the car radio from the niche by unscrewing its mounting bolts, and also remove the plastic handles from the heater controls.
The instrument panel casing is freed from its fasteners. It should be pulled towards you, extending it 15–20 cm. This will be enough to gain access to the rear wall of the instrument unit.
A number of recesses with light bulb sockets are visible on the wall. They are removed manually. To do this, the socket together with the lamp is turned counterclockwise until a characteristic click is heard.
The arrow on the back wall shows a socket with a light bulb; it is unscrewed by hand
Burnt out lamps are replaced with new ones, then the instrument panel is reassembled.

Wiring damage

Problems with electrical wiring are the worst case. To figure this out on your own, the driver needs to have serious knowledge of electrical engineering. In particular, he must be able to read automotive electrical circuits well. Not all car enthusiasts can boast of such skills. It is for this reason that it is better to entrust the search for a damaged section of on-board electrical wiring to a qualified auto electrician.

His actions boil down to the following: he determines the key sections of the circuit and sequentially “rings” them using a multimeter until he finds a broken section of the wiring. Completing this work may take several minutes or several hours - it all depends on where exactly the circuit break occurred.

Panel contact board problems

If all of the above measures do not lead to anything, the last option remains: damage to the contact board in the dashboard. This part is a combination of several microcircuits. It is not possible to repair it in a garage without special diagnostic equipment. So the car owner has only one option - to replace the entire board. You can purchase it at any auto parts store. It costs about 400 rubles. Let us list the stages of its replacement.

First, all the steps mentioned above in the paragraph on replacing light bulbs are performed.
But instead of unscrewing the bulbs, you should unscrew the four bolts at the corners of the rear wall of the dashboard.
The back wall is carefully removed along with the board, which is attached to the wall with plastic latches.
The contact board in the dashboard of the VAZ 2114 is held on by simple plastic latches
The latches are bent with a knife, the damaged board is removed and replaced with a new one. The panel is then reassembled.

So, the owner of a VAZ 2114 can solve most problems with the dashboard lighting on his own. All that is required is the ability to use a screwdriver. The exception is the case of damaged wiring. It is strongly recommended that you contact an electrician to identify the damaged area. This will save a lot of time and nerves, which, as we know, are not restored.

Tidy 21099 injector: icon designations

There are more lights and indicators here than on the carburetor. Additional light bulbs available:

requirement to check the engine;
STOP light.

Tidy 21099 carburetor: designations

The decoding described at the beginning of the article can be fully used as an example for this point.

Stop light on the dash 2109

The lamp signals the driver about the presence of unexpected problems in the on-board circuits. When such an inscription is activated on the device, it is recommended to immediately go to a service station and look for the cause.

The principle of operation of the main elements of the fuel unit

Fuel system VAZ 2114

Container for storing flammable materials

It is made of steel, consists of two firmly welded parts, the neck through which the fuel enters is connected to the tank with a rubber pipe and secured with clamps.

Gasoline pump

This tool with an electric mechanism is located in a tank with a fuel mixture level indicator. Its actions are coordinated by the engine control box, through a special pump relay, which supplies fuel through the line to the injectors. At idle or when the engine is completely turned off, the pressure is maintained due to the action of a one-way lock, which is located near the unit itself.

The VAZ 2114 power system has a fuel pressure regulator and injectors. The voltage is supplied to them from the battery through the main relay. Thus, the amount of driving fluid is indicated by the duration of the pulses, which are generated by the engine control unit and transmitted to the injectors.

Ramp

Located on the intake manifold, it includes a fuel control element and a pressure valve with a spring-loaded diaphragm. It, in turn, divides the regulator body into 2 parts: the fuel part regulates the pressure of the combustible mixture, the air part, due to the rarefaction of the air, raises the membrane and produces constant fuel pressure readings in the rail.

When the engine starts, the vacuum behind the damper decreases, the diaphragm closes the power system valve, so the pressure increases. When the vacuum is maximum, then the fuel pressure decreases. The regulator is not dismountable, so if it fails, it is replaced with another one.

Fuel mixture control sensor

The pump module has a float, which is located in the tank cavity. When the position of the float changes, the resistance of the unit changes proportionally. According to a certain signal, the fuel quantity indicator on the dashboard displays the presence of fuel in the system.

Why does the sensor often fail?

fragility of the case;
frequent temperature changes;
condensation formation in the tank;
when using a low-quality combustible mixture;
oxidation of contacts when sealing is broken.

That is why it is so important to carry out preventive maintenance on time, clean the unit, change contacts in order to prevent its destruction. Changing a device is not that easy. Many markings are original and unique, which means that the services of professionals will be required, which are also not cheap.

Hoses and pipelines

Such irreplaceable products guarantee uninterrupted circulation of flammable liquid from the container to the main line and nozzles, and if there is excess, they transfer the residual liquid back to the tank. The pipelines are located on the bottom of the vehicle, they need to be carefully checked, cleaned, inspected for integrity, various deformations identified and promptly eliminated in order to avoid fuel leakage, as well as poor transmission to the injectors.

Purpose of the tachometer

The tachometer on the VAZ 2109 is a device installed on cars to measure engine speed. Thanks to this device, the driver can find out what crankshaft speed is currently supported by the power unit. This device also allows you to prevent exceeding the possible permissible engine speed. Useful tips. VAZ dashboard, second life.

Dashboard with installed digital device

The main purpose of the tachometer on the VAZ 21099 carburetor is to facilitate the selection of the required gear, and this, in turn, makes it possible to increase the service life of the engine. At the moment when the instrument needle begins to approach the red zone, it is recommended to switch to a higher gear. This device can also be used for adjustment work while driving or when the internal combustion engine is idling. Tidy with VAZ 2115 in 2109 low panel

If you decide to purchase a VAZ 2109 tachometer, first you need to decide on the type:

Digital devices allow you to display information about the operation of the power unit on a special display. If you install this device on a VAZ 2109 carburetor, the device will be able to more accurately set the forced idle economizer thresholds. Analog devices are more popular today. Such devices allow you to clearly demonstrate the number of engine revolutions using a scale and an arrow that moves along it (the author of the video is Ilya Popov).