the main / Skoda / Wiring diagram UAZ 31519 carburetor. Electrical equipment of uaz cars

Wiring diagram UAZ 31519 carburetor. Electrical equipment of uaz cars

In modern UAZ models - Patriot and Hunter, there are very often cases of electrical wiring fire! Be vigilant, regularly check the electrical equipment of the car, install only standard fuses (ours are not Chinese!). Make sure no water gets into the computer.

Vector diagrams of electrical equipment 316X: (diagrams were sent by Gudkov Victor)

Electrical circuits for cars,,, (error - three diodes in the generator, those that are on the common (to ground?), Must be turned over -) ( Attention! - very large size, about 1.7 MB each scheme, sent by Maxim Smirnov):

Wiring diagrams for cars (size slightly less than 415K),
Diagram of the engine control system (242K) UMZ-4213, UMZ-420, ZMZ-409

Wiring diagram for 31512, manufactured before 1994 (from the site "Behind the wheel") for a monitor with a resolution of 640 * 480 (60 Kbytes), 800 * 600 (88 Kbytes), 1024 * 768 and more (120 Kbytes).

1 - front lamp; 2 - headlight; 3 - connecting panel; 4 - sound signal; 5 - side repeater of direction indicators; 6 - interrupter of direction indicators; 7 - generator; 8 - lantern for lighting the engine compartment; 9 - heater electric motor; 10 - heater switch; 11 - additional resistance; 12 - additional starter relay; 13 - spark plugs; 14 - ignition coil; 15 - storage battery; 16 - transistor switch; 17 - sensor distributor; 18 - starter; 19 - "mass" switch; 20 - emergency vibrator (connected when the switch fails); 21 - oil pressure indicator sensor; 22 - voltage regulator; 23 - gauge for the coolant temperature gauge in the cylinder block; 24 - plug socket; 25 - glass washer motor; 26 - wiper motor; 27 - fuse box; 28 - coolant overheat warning lamp sensor; 29 - indicator lamp sensor emergency pressure oils; 30 - switch of the control lamp of the emergency state of the hydraulic drive of brakes; 31 - parking brake warning lamp switch; 32 - brake signal switch; 33 - foot light switch; 34 - microswitch; 35 - electronic control unit for the idling system of the carburetor; 36 - electromagnetic valve; 37 - sound signal button; 38 - control lamp of emergency state of the hydraulic drive of brakes; 39 - indicator lamp for direction indicators; 40 - control lamp of the parking brake; 41 - wiper and washer switch; 42 - speedometer; 43 - control lamp for high beam headlights; 44 - ammeter; 45 - oil pressure indicator; 46 - control lamp for emergency oil pressure; 47 - control lamp for overheating of the coolant in the radiator; 48 - coolant temperature gauge; 49 - fuel level indicator; 50 - alarm switch; 51 - central light switch; 52 - cockpit lighting; 53 - turn signal switch; 54 - cabin lighting switch; 55 - sensors for the fuel level indicator in the tanks; 56 - thermal fuse; 57 - fuel tank sensor switch; 58 - ignition switch; 59 - reversing light switch; 60 - rear lamp; 61 - license plate lamp; 62 - reversing lamp; 63 - trailer socket.

Lamps	Lamp type	Power, W
Headlight: high and low beam	A12-45x40	45x40
Turning lights (3962 * / 3151 *)	A12-50x40 / A12-45x40	50x40 / 45x40
Front lights
- side light	A12-5	5
- direction indicators	A12-21-3	25
Rear lights
- side light	A12-5	5
- direction indicators	A12-21-3	25
- brake signal	A12-21-3	25
Direction indicators repeaters (on all vehicles, except 3303 *)	A12-5	5
Reversing light	A12-21-3	25
License plate light	A12-5	5
Special sign lighting lantern (3962 *)	A12-21-3	25
Lantern lighting under the hood (315 *)	A12-21-3	25
Cockpit lighting	A12-1	2,1
Portable lamp	A12-21-3	25
Instrument lighting High beam headlights control Emergency oil pressure control Emergency coolant overheating control Direction indicator control Brake alarm indicator Parking brake switch	A12-1	2,1
Alarm activation control	A12-1.1 (A12-0.2?)	1,1 (0,8?)

The tachometer (from the six) looks perfect next to (to the right) of the speedometer. The connection is standard - everything is written on the tach case. One - per coil (either low-voltage end). One - + 12V. One is mass. One is taha lighting. For fun, you can connect the parking brake light. The generator failure lamps will remain, but this cannot be connected without a relay. And the bulb of the open (closed) air damper of the carb. The last three are not connected to me, I don't want to mess around yet. I drilled the hole with a 2.5 mm drill in a circle less than the diameter of the tach circle by 3 mm, then finished it with a round file. The holes need to be screwed first. Do not press too hard with a drill! Otherwise, the panel will be wrapped on the last holes.

(from UAZ-Hunter to a regular UAZ)
Electronic speedometer AR 20.3802 (two-line display:
the upper line - the total mileage (6 digits, insignificant zeros are highlighted), the lower line - the resettable daily travel counter), the AP 68.3843 speed sensor (six-pulse, no-pass, M22 thread, Kozmodemyanovskiy connector).

There was only one difficulty during installation - a complete lack of information about both the speedometer and the Hunter's electrical circuit. Searches have yielded no results. It was also not possible to find a native harness with connectors. I had to use the scientific poke method. Everything is clear with the sensor: red - power supply (+12 V) (after the ignition switch), blue - signal, black - ground. (The connector was simply cut off). The speedometer connector looks like this (the numbering of contacts is conditional):

The purpose of the conclusions was established:
1. Earth.
2. Power supply (+12 V). (After ignition switch). (When voltage is applied, the liquid crystal digital display turns on. When the voltage is removed, the distance traveled readings are saved).
3. Signal from the sensor. (To blue sensor wire).
4. Night illumination (for lighting devices).
5. Output 12 volts to power the speed sensor.
6. High beam indicator (the symbol in the center of the scale lights up).
7. Nothing happens. (Probably not involved).
Due to the lack of a mating connector, I connected it with single wires with soldered lugs ("mothers") from the audio equipment. Everything works. Doesn't make noise. The arrow does not jump. The error is minimal. And at night - generally beautiful.
october 2005

Nominal. section, mm2	Current in a single wire, A at continuous load and at ambient temperature, о С
Nominal. section, mm2	20	30	50	80
0,5	17,5	16,5	14,0	9,5
0,75	22,5	21,5	17,5	12,5
1,0	26,5	25,0	21,5	15,0
1,5	33,5	32,0	27,0	19,0
2,5	45,5	43,5	37,5	26,0
4,0	61,5	58,5	50,0	35,5
6,0	80,5	77,0	66,0	47,0
16,0	149,5	142,5	122,0	88,5

Note: when laying wires with a cross-section of 0.5 - 4.0 mm2 in bundles, in the cross-section of which there are from two to seven wires along the route, the allowable current in the wire is 0.55 of the current in a single wire according to the table, and when the presence of 8-19 wires - 0.38 of the current strength in a single wire.

Causes:
First: Belt tension.
Second: The diode bridge (horseshoe) partially burned out. This is a replacement
Third: What I had. The bastardly thin wiring from the generator should pass all 65a. charging current, and mine was charred and half burnt near the attachment to the generator. This was the reason. It is imperative to change it entirely.

Luggage compartment lighting

I made the trunk light according to this scheme. The location of the tip and switch can be seen in photo 1, lights - in photo 2. If the secret police is not worth it, then decoupling diodes are not needed. It is possible without a tip, then you can only turn it on manually (now there are three positions: off, on manually, on automatically when you open the trunk).

From the beginning of production until the mid-80s, a simplified wiring diagram for the UAZ 469 and 469B was used. The cars were supplied mainly to the army, therefore they were equipped with contact ignition and did not have electronic devices. After the modernization, the designation of the car was changed to UAZ 3151, and the electrical circuitry of these SUVs changed accordingly.

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Wiring diagram of the UAZ 469 of the old and new model with a description

The composition of the electrical wiring components of the early "UAZ":

Front light used as a side light and direction indicator.
Headlight headlight.
Connecting strip for connecting lighting devices.
Klaxon.
Coil.
Additional resistances in the tips of the candles, which reduce the level of pickups during operation.
Spark plugs.
Generator.
A sensor used to turn on a warning lamp for a pressure drop in the lubrication system.
A device for measuring oil pressure in operating mode.
Coolant temperature gauge in the engine jacket.
Overheating warning lamp switch on sensor installed in the radiator.
Battery.
Engine compartment illumination lamp.
Interrupter and distributor of ignition pulses.
Connecting strip.
Horn button.
Relay for starting the starter.
Starter.
Battery switch (disconnecting earth from the body).
Regulator of the voltage level of the generated current.
Motor for driving the wipers.
Windshield wiper switch.
Relay interrupter for direction indicators.
Fuse box.
Two wall outlets for powering additional equipment.
Headlight mode switch (foot).
Limit switch for brake signals.
Light control button in the passenger compartment.
Plafond for interior lighting of the cabin.
Thermal fuse (reusable).
Additional lighting shade located at the rear of the body.
Indicator lamp for an excessive rise in fluid temperature in the radiator.
Oil pressure drop warning.
Control indicator showing the operation of the direction indicators.
A set of devices.
Scale backlight lamp (separate for each dial indicator).
Speedometer.
Central manual switch for external lighting.
Egnition lock.
Headlamp switch to high beam mode.
Ammeter of the on-board network.
Oil system pressure gauge.
Liquid temperature gauge in the engine block.
Fuel level meter (works only on one of the selected fuel tanks).
Gasoline sensor switch (selects left or right tank).
Radio receiver and speaker (optional, rarely installed from the factory).
Steering column switch for direction indicators.
The electric motor of the impeller of the interior heating system.
Glow plug installed in the preheater boiler.
The control spiral, which was used to determine the degree of glow of the candle.
Fuel level sensor (individual for each tank).
Rear combination lamps, including size lamps, brake lights and direction indicators (common lamp).
Glow plug switch.
Switch for operating modes of the engine of the additional autonomous heater.
Separate heater motor switch.
Plug-in block designed to supply current to trailed devices.

Color wiring diagram for UAZ 469, front Color wiring diagram UAZ 469, rear

On the left side in the rear light there is a transparent insert for illuminating the license plate with a size lamp.

This diagram lacks the elements that were equipped with some machines:

additional rotary seeker headlight;
the lamp switch in this headlamp.

Composition of UAZ electrical wiring components after modernization:

Front combination lamp with lens for position signal and direction indicator.
Headlight headlight.
Fog light, not found on all cars.
Audible warning signal.
Generator.
Hood lighting.
Coolant temperature sensor in the cooling jacket.
Engine overheating sensor (installed in high tide on the radiator).
Sensor for emergency lowering of the fluid level in the brake hydraulics.
Oil pressure indicator sensor.
A separate element responsible for turning on the emergency pressure warning lamp in the lubrication system.
Valve microswitch on carburetor (forced idle system).
Candles.
Ignition system distributor sensor.
Washer pump drive electric motor.
Idle economizer valve.
Electromagnetic locking element on the carburetor.
Coil.
Lead acid battery.
Manual breaker for battery negative wire.
Starter.
Additional resistor.
Side repeater indicator of direction of turns.
Front fog lamp control button.
Cigarette lighter.
Separate fuse for cigarette lighter circuit.
Vibrator (used as an emergency ignition system in case of a main breakdown).
Transistor switch.
Economizer valve controller.
Electric motor for driving the cleaners.
Starter start relay.
Fuse-link block.
Limit switch on the brake pedal (for turning on the brake lights).
Steering column lever for operating direction indicators.
External alarm pushbutton switch.
Turn signal relay.
Plug connector.
Interior light switch.
Interior lighting lantern.
Switch for operating modes of the wiper and control of the fluid supply to the windshield.
Ventilation and heating system fan electric motor.
Heater control switch.
Additional resistor included in the fan motor circuit.
Heater safety element.
Egnition lock.
Thermal fuse.
Central control device for external light.
Foot switch for switching the operating mode of the headlights.
Voltmeter.
Engine lubrication system pressure gauge.
Control indicator of emergency pressure.
Coolant temperature indicator.
Power plant overheating warning light.
Fuel level meter in tanks (switchable).
Indicator of operation of direction indicators.
Signal lamp for falling liquid level in the reservoir hydraulic drive brakes.
Parking brake indicator.
Sound signal control key.
Signal lamp for active high beam mode.
Speedometer.
Fog light switch (on the back of the machine).
Limit microswitch under the parking brake lever.
Reversing lamp limit switch.
Gasoline level gauge in the right tank.
Switch for measuring the level of liquid in containers.
Sensor for determining the amount of gasoline in the left tank.
Rear combination lamp.
Rear registration plate backlight.
Separate reversing indicator light.
Plug block for connecting the trailer wiring harness.
Fog light on the back of the car.

Schematic diagram of the ammeter insert

Photo gallery

The photo shows one of the options for placing the ammeter in the cabin.

Generator G250 350 W

The generators with improved parameters installed on the later UAZ 3151 cars are connected in a similar way.

Ignition

On all-terrain vehicles UAZ, there are two types of ignition systems - contact and transistor. The first model was used on the UAZ 469 / 469B, but from the mid-80s it was supplanted by the contactless one. Gradually, the owners changed devices on early cars, so it's rare to find a car with a "classic" system.

Contact ignition circuit

Contact ignition elements for UAZ 469:

Battery.
Starter Solenoid Relay.
Coil.
Fuse box.
Current meter.
Mass switch.
Voltage regulator module.
Generator.
Egnition lock.
Moving contact (slider).
Additional condenser.
Spark pulse distributor.
Candles.
Additional resistors in the tips.

Classic ignition circuit with mechanical contact group

Electronic ignition circuit

The UAZ 3151 began to use a non-contact system with improved characteristics.

Ignition system components:

Coil.
Transistor switch.
Pulse distribution sensor.
Candle.
Fuse box.
Vibrator of the emergency ignition system.
Additional resistor.

Transistor ignition system

To connect the parts of the contactless fuel ignition system, wires with different colors of insulation are normally used:

blue (G);
red (K);
yellow (F);
green (H).

The difference between ignition systems

The difference between the contact ignition system is a contact group that distributes high voltage pulses. Because of this, the unit is prone to overheating and burning, which impairs the transmission of current. In a contactless system, signals are generated by a Hall sensor and a transistor switch. The design has no mechanical elements subject to active wear and is capable of operating at reduced voltage in the on-board network.

Common faults

Breakdowns associated with the UAZ 469 electrical circuit:

battery discharge;
broken wires due to mechanical stress or corrosion;
voltage drop in sections of circuits due to oxidation of contact connections;
lack of charging due to wear of the brushes on the generator or insufficient tension of the belt drive;
the output of a part of the electrical circuit due to a blown fuse;
burnout of one or more lighting lamps;
problems with the starter retractor relay.

Preventive measures

The main measures for the prevention of electrical system malfunctions:

Regularly check the condition of the cable lugs installed on the battery terminals. Clean parts from oxides and dirt.
Wipe off dust from the battery case. If a serviced battery is used, then it is necessary to clean the ventilation ducts and bring the electrolyte density to normal. Recharge the device periodically using the charger.
In case of long downtime, disconnect the battery using the standard disconnect switch.
The wiring harness must not bend or chafe against the sharp edges of the body panels. If insulation damage is found, restore the protection with insulating tape or replace the wiring section. Protect kinks with special sleeves.
If the fuse blows, determine the cause of the breakdown. It is forbidden to make repairs by installing reinforced elements designed for increased current.
Monitor the condition of the starter by periodically cleaning the rubbing elements from dirt and lubricating them with Litol-24. Check the axial clearance of the rotor, which should be within 1 mm, and the tightening of the bolts securing the unit to the crankcase. Electrical contacts must be cleaned of carbon deposits with a file.
Clean the distributor slider from dust and grease with a rag and clean gasoline. Simultaneously lubricate the rotor bushing (a few drops are fed under the removed felt). High voltage wires should be tightly installed in seatsoh. If moisture gets on the elements, wipe them with a clean and dry cloth.
Do not abuse the use of an emergency vibrator, which has a service life of about 30 hours. Deactivate the carburetor economizer when the backup ignition is switched on.
Check the fastening of devices in the instrument cluster, replacing burnt-out parts.

DIY repair of wiring and electrical equipment

The main malfunctions of electrical equipment on the UAZ 469 and repair methods:

If there is no battery charge, check the tension of the alternator drive belt and the condition of the brushes. The problem may arise due to wear of the slip rings or the rotor rubbing against the stator (bearing wear). The exact cause of the breakdown can only be determined after removing the generator and troubleshooting the components.
An overcharged battery indicates a breakdown of the voltage regulator, which must be replaced.
Generator noise is a sign of worn bearings or bearing seats. Worn and damaged parts require replacement.
The absence of sparking in a contactless ignition system indicates breakdowns of the coil or cover, as well as incorrect timing adjustment. Possible breakdown of the switching device. For repairs, it is required to replace broken units and adjust the moment of spark supply.
Burnt-out products must be replaced with parts with similar parameters. Periodically adjust the headlight beams (as well as fog lamps, if installed).
A rattling sound during horn operation is caused by poor contact or cracks in the membrane. Repair requires checking the condition of the wiring and connection points. The damaged audio signal is replaced by a new one.
If a short circuit is detected in the circuit, it is necessary to find out the cause of the malfunction. To do this, you need to go through all the elements connected to this wire. Each consumer is disconnected from the network and separately checked for operability. If the insulation on the wiring harnesses burns, they must be replaced.
When replacing a wiring section, it is required to ensure a reliable connection of the old and new sections. The fastest technique is to twist the bare areas, but this method does not provide reliable contact and long service life. A more reliable joint can be created by installing a special crimping sleeve. After installing the element, it is necessary to protect the bare area with insulating tape. The third method of connection is soldering the wiring, which provides a strong joint, which in its characteristics is somewhat inferior to crimping.

How to install the ignition yourself

Contact ignition installation instructions:

Unscrew the spark plug from the first cylinder (from the pulley).
Determine the moment the compression starts. For this, the hole of the candle well is clamped with a finger, and the assistant turns the shaft with a handle. The moment the air starts to escape is the starting point of the compression cycle.
To turn crankshaft until the hole on the pulley coincides with a special pin installed on the timing gear cover of the guitar.
Check the position of the rotor, the contact of which should be located opposite the inner conductive element of the cover, which supplies a voltage pulse to the first cylinder.
Loosen the screw and turn the octane-corrector plate until the pointer coincides with the middle part of the scale.
Then grab the valve body and gently turn it counterclockwise until the contact group closes.
Disconnect the wiring from the engine compartment lamp.
Use a separate harness to connect the lamp terminal to the ignition coil connector. A wire is attached to the same element that goes to the ignition distributor.
Turn the key in the ignition lock. Then smoothly rotate the distributor body until the lamp turns on. At this stage, it is important to fix the very initial moment of the flash, the accuracy of the adjustment depends on it.
Hold the distributor housing in the found position. Then tighten the fixing screw and replace the cover.
Check the correct installation of high-voltage wires.

How to adjust the ignition

The first stage in adjusting contact ignition is setting the gaps:

Remove the spring clips and remove the cover from the distributor.
Remove the slider rotor.
Turning the crankshaft using the starting crank or wrench, set the cam position that provides the maximum clearance in the contact group.
Measure the gap value with a feeler gauge. A value in the range of 0.35-0.45 mm is considered normal.
If the gap is increased or decreased, loosen the fixing screw of the fixed contact. Then turn the adjusting eccentric unit (has a separate flat for a screwdriver).
After setting the gap, tighten the locking screw and re-measure.
Reinstall the removed parts. If further adjustment is required, only the runner rotor needs to be mounted.

To control the ignition parameters, warm up the engine to operating temperature and check the acceleration of the car at a speed of 30-35 km / h. The vehicle must be in direct gear. With correct adjustment, a short-term detonation with a low intensity will occur. If it is noticeable, then you should turn the octane corrector one division counterclockwise (change the ignition timing).

The sequence of steps and features of the non-contact ignition adjustment:

Set the piston in the first cylinder to the position of the end of the compression stroke. This requires aligning the marks on the pulley and gear cover.
Remove the cover from the distributor.
Check the contact position of the slider. The conductive plate must be located exactly opposite the element marked "1" on the cover.
Unscrew the fastening bolt and turn the octane corrector plate to the middle position (on the scale and indicator), and then tighten the fastener.
Unscrew the fastening of the corrector plate to the distributor housing.
While holding the slider with one hand, turn the body clockwise. The purpose of the operation is to match the red mark on the rotor surface with the pointer tip. Then fix the knot in the new position.
Reinstall the removed parts and check the correct installation of the wires and the integrity of the insulation.

The check is carried out according to a similar method, only acceleration starts from 40 km / h and is carried out up to 60 km / h. After that, the detonation should disappear. If necessary, turn the distributor by 0.5-1 division of the octane-corrector scale (counterclockwise). If there is no detonation at all during acceleration, then the assembly rotates clockwise.

To ensure the operability of all electrical devices on any car, an electrical circuit is used. In this article we will talk about the legendary domestically produced cars - UAZ. What is the wiring diagram of the UAZ Bukhanka car, what are its features - read about it below.

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What is included in the wiring diagram?

What features does a car electrician have on old cars produced by the Ulyanovsk Automobile Plant?

Electronic components

The wiring diagram of the UAZ 452 itself is quite simple - single-wire.

By its design, the wiring diagram of the UAZ390995 or another model is characterized by the following solutions:

The body of the vehicle is used as a mass.
Any electrical equipment of the old-style circuit on the UAZ 409 or another model, as well as actuators, are equipped with a negative terminal, which is connected to the car body. According to experts, in general, this scheme is imperfect.

According to the instructions for the operation of electrical equipment, the driver must from time to time diagnose the condition of the integrity of the contacts. We are also talking about their oxidation. If the driver notices the presence of oxidation on the terminals, he must process them using fine-grained sandpaper.

Engine compartment

In this case, the engine compartment is located directly in the passenger compartment in accordance with the design of the machine.

The very access to the electrical circuit and other mechanisms and units is made from the passenger compartment, as a result of dismantling the cover, which:

Designed to protect motorists and passengers from exhaust gases entering the passenger compartment.
Allows you to protect the car interior from dirt and dust.
Serves as an additional heating device, in particular in a passive way, as a result of heating.

AUZ car engine compartment

Previously, the UAZ 396255 and other models with a carburetor used an engine from the legendary "Victory", which was later replaced with a more advanced and modern unit. In particular, this refers to the motor from the "Volga". This decision at one time, back in 1964, was facilitated by the serial launch of a production line at the ZMZ enterprise. Despite the fact that many domestic motorists claim that the scheme of the UAZ 390994 injector in the engine compartment is located in an inconvenient place due to the lack of a hood, this is not the case. Dozens of years of operation have proven that the absence of a hood does not in any way affect the diagnosis and maintenance of a car.

Passive safety

The very design of the domestic Loaf with the absence of a hood at first raised many questions in terms of the safety of the driver and passengers. As a result of several dozen crash tests, which were carried out back in the early 70s of the last century, it was revealed that the car is no less safe when compared with other domestic cars. As the results have shown, in the event of an accident, both the driver and the passengers of the car have a good chance of avoiding injury in the event of an accident.

Features of electrical equipment

So, what are the features of the UAZ 452 wiring diagram. At the time of the start of production for the engineers and designers of the enterprise, the most difficult moment was the search for the highest quality elements and components.

In particular, we are talking about details for the vehicle lighting system, as well as ignition, which is especially well traced by how the car's cabin is filled:

control elements for various transport systems;
control devices for monitoring the state of nodes and mechanisms.

External optics

At that time, the designers had to resort to many freelance solutions in order to establish mass production of cars.

That is why:

The UAZ electrical circuit includes an optics switch, which was borrowed from the GAZ 69. By the way, the latter is the predecessor of the Loaf.
In addition, almost all the optics were borrowed from the GAZ 64 - these are lights, etc.

Ignition system

troubleshooting

On any domestic cars, problems in the operation of electrical equipment periodically arise. If you notice that the UAZ wiring is not working correctly, you need to diagnose it and check all the elements. If there are any malfunctions in the operation of electronic devices, first of all, you need to check if the fuses in mounting block... If everything is fine with these elements, and the equipment still does not function, for example, if we talk about optics, then it is necessary to check whether the working light bulbs are used. If the lamps themselves are working, it is necessary to ring the electrical part using a tester (the author of the video about the ringing is Ramil Abdullin).

If the Loaf refuses to start at all, you need to do the following:

First of all, check the battery performance.
With a charged battery, using a tester, ring the circuit from the coil to the generator device, often the reason for the inability to start the motor is due to breaks in the wiring. If there are breaks, the wires should be changed. If there is oxidation on the contacts, they should be cleaned.
Running power unit will be impossible in the absence of a spark.To diagnose the presence of a spark from the spark plug, remove the high-voltage cable and bring it to the body. When trying to start the engine, a spark should slip between the cable and the body.
If there is no spark, the problem is probably carbon deposits and deposits. By the way, carbon deposits are often the reason for the unstable operation of the motor and its triple formation. To get rid of such a malfunction, it is advisable to clean the candles; a step-by-step instruction for this process is presented.

The designers of the Ulyanovsk Automobile Plant equipped the UAZ 31512 with electrical equipment. The electrical diagram of the UAZ 31512 may be needed, if necessary, to repair the car. For the convenience of repair, the manufacturer installed wires with different colored insulation on the car.

Electrical equipment UAZ 31512

The wiring diagram of the UAZ 31512 is made according to the single-wire principle. This means that consumers have a common negative contact, which is the car body.

The electrical equipment of a car consists of several systems:

Nutrition;
Starting and supplying power to the power unit;
Measuring instruments;
Outdoor and indoor lighting;
Light alarm;
Autonomous heating;
Windshield cleaning;
Sound alarm.

IMPORTANT: To avoid fire hazard due to short circuit or overload, electrical circuits are protected by fuses.

The vehicle's electrical system is 12 volts. Power is supplied from a storage battery and a DC generator. They are connected in parallel in the circuit. The storage battery supplies the consumers with the engine off. After starting the installation, the generator supplies power to the electrical equipment.

Power supply and starting the power unit

The motor is started by an electric starter. It is an electric motor. The starter is equipped with a solenoid relay. It is used to engage the device and engage the drive gear with the engine flywheel. The starter is switched on remotely with the ignition switch.

Power supply is required for normal engine operation internal combustion... It includes:

High voltage coil;
Distributor;
Spark plug;
Idle solenoid valve;
Forced idle switch;
Idle ECU;
Switch.

Indicator lamps and measuring instruments

On the front panel of the car there is a block of instruments and warning lamps. It is necessary to control the operation of components and mechanisms of the machine. The panel contains:

Fuel level indicator in the tank. The readings are taken from a sensor installed in the left or right tank;
Coolant temperature gauge. Indicates the temperature in the engine cooling system;
Oil pressure device in the power unit lubrication system;
Voltmeter. Serves to determine the voltage in the on-board network;
Emergency lamps for oil pressure, fluid in the brake system;
Signal lamps, direction indicators, parking brake system, dipped headlights, excess of the permissible coolant temperature.

Outdoor and indoor lighting

The car is equipped with external and internal lighting. It is necessary for using the machine at night. The outdoor lighting scheme includes low / high beam headlights, side lights, and license plate lights. The outdoor lighting is controlled by a combination switch.

Interior lighting is made in the form of a shade of interior lighting and a lamp for illumination of the engine compartment. The interior light is controlled by a switch on the front panel. You can also read about.

REFERENCE: Interior lighting includes instrument lighting. The brightness of the backlight is controlled by the combined outdoor light switch.

Light signaling

The electrical diagram of the UAZ 31512 includes a light alarm system. This includes direction indicators, brake signals, and a backing light. Wiring diagram of turns on UAZ 31512 with pc 950 relay. It is used simultaneously for turn signals and alarm activation.

Light signaling is controlled by the following elements:

Turn switch;
Stop lights button;
Reversing light switch;

Heater and horn

UAZ 31512 is equipped with an autonomous heater. The circulation of hot air in the passenger compartment is carried out by a fan. The fan motor is started by a switch mounted on the panel. The fan motor has two rotor speeds.

The machine is equipped with an audible signal. It is necessary for the safe use of cars on public roads. Under the influence of an electric current, the membrane of the signal begins to vibrate, making a sound. The signal is controlled by a button located on the steering wheel.

Glass cleaning

The windshield of the UAZ 31512 car is cleaned with electric brushes. The wiper motor has two modes. The wiper system includes a washer motor. The system is controlled by a combination switch.

WARNING: The wiring diagram includes a socket for connecting the trailer wiring.

It follows from the above that the UAZ 31512 equipment consists of several electrical circuits. The wiring is done with colored wires. This facilitates the repair procedure with a color scheme.

I have a 1989 car, it was originally with contactless system ignition. Later it was converted to a contact one, which, in principle, I do not regret. And the pros and cons of each have their own speech not about them. I had to use the old-style UAZ 3303 wiring diagram, of course, even with a carburetor.

The plant immediately warns of the possibility of making changes to the electrical circuit. Since the car has been in operation for almost 30 years, there are such changes. I will give several schemes with a contact and non-contact ignition system for different UAZ vehicles. But since in those days there were no special differences, I consider them similar with some differences.

Wiring diagram

The upper figure shows a non-contact version of the car's wiring in color, the lower one is an older model.

Old-style UAZ 3303 wiring diagram

The above separately shows the wiring diagram of the UAZ 3303 generator

The circuit, which has an ignition system with contacts, is taken from 469. There is a radio receiver on the circuit, this is interesting.

Wiring diagram UAZ 469 similar to 3303 with contact ignition system

In conclusion, I cite another one from onboard UAZ 33036 newer, but not injector yet.