During the operation of the car, problems may arise that can only be solved after studying the electrical circuits. The article presents detailed wiring diagrams for the Lada 4×4 SUV (VAZ 2121), which will help you not only repair the car, but will also be useful when installing additional electrical equipment, for example, a car alarm, DVR and other accessories..
Electrical diagram of VAZ-21213
1 — headlights; 2 — side direction indicators; 3 — electric motor for windshield washer; 4 — headlight washer motor*; 5 - switch; 6 - battery; 7 - starter; 8 - generator; 9 — headlights; 10 — gearmotors for headlight cleaners*; 11 — sound signal; 12 — spark plugs; 13 — carburetor limit switch; 14 — carburetor solenoid valve; 15 — ignition coil; 16 — windshield wiper gearmotor; 17 — carburetor solenoid valve control unit; 18 — ignition distributor sensor; 19 — coolant temperature indicator sensor; 20-oil pressure warning lamp sensor; 21 — plug socket for a portable lamp**; 22 — brake fluid level warning lamp sensor; 23 — windshield wiper relay; 24 — relay for turning on the rear fog light***; 25 — relay for turning on the heated rear window; 26 — relay for turning on headlight cleaners and washer*; 27 — relay for turning on low beam headlights; 28 — relay for turning on the high beam headlights; 29 — ignition relay; 30 — starter activation relay; 31 — relay-breaker for alarm and direction indicators; 32 — heater electric motor; 33 — additional resistor of the heater electric motor; 34 — backlight lamps for heater control levers; 35 — external lighting switch; 36 — main fuse block; 37 — additional fuse block; 38 — reverse light switch; 39 — brake light switch; 40 — instrument lighting regulator; 41 — ignition switch; 42 — three-lever switch; 43 — alarm switch; 44 — tailgate glass cleaner and washer switch*; 45 — heater motor switch; 46 — switch for heating the rear door glass; 47 — rear fog light switch; 48 — lamp switches located in the door pillars; 49 — interior lamps; 50 - cigarette lighter; 51 — switch for the warning lamp for covering the carburetor air damper; 52 — control lamp for covering the carburetor air damper; 53 - switch for differential lock warning lamp; 54 — parking brake warning lamp switch; 55 — sensor for level indicator and fuel reserve; 56 — instrument cluster; 57 — tailgate glass washer motor; 58 — rear lights; 59 — block for connecting additional brake lights; 60 — blocks for connecting side marker indicators; 61 — pads for connecting to the heated glass element of the tailgate; 62 — license plate lights; 63 — gear motor for tailgate glass cleaner.
The order of conditional numbering of plugs in the blocks : a - windshield wipers, headlights and tailgate glass, windshield wiper relay breaker; b — ignition distributor sensor; c — relay-interrupter for alarm and direction indicators; g - switch; d — three-lever switch; e — alarm switch; g — relay for turning on the rear fog light; h — rear lights (numbering of terminals in order from top to bottom); and — instrument clusters.
In the instrument panel wiring harness, the second ends of the white wires are brought together to one point, which is connected to the instrument lighting control. The second ends of the black wires are also brought together to a point connected to ground. The second ends of the yellow wires with a blue stripe are brought together to a point connected to terminal “A” of the main fuse block. And the second ends of the orange wires are also brought together to a point connected to terminal “B” of the main fuse block.
* Installed on parts of manufactured cars; **not installed since 2000; *** installed since 2001. Previously, the rear fog light was switched on directly by switch 47, powered by fuse 3 of the additional fuse box.
Mounting blocks for Lada 4×4 2020
https://www.youtube.com/watch?v=SqqIBAU8osQ
The turn signal relay (part number 8450082700, 9-pin), as well as the windshield wiper relay, are located under the trim in the driver’s feet, to the left of the fuse mounting block.
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Electrical diagram of VAZ-2121
1 — headlights; 2 — side direction indicators; 3 — headlight washer motor*; 4 - voltage regulator; 5 — battery charge warning lamp relay; 6 - battery; 7 - starter; 8 - generator; 9 — headlights; 10 — gearmotors for headlight cleaners*; 11 — sound signals; 12-spark plugs; 13 — carburetor solenoid valve; 14 — ignition coil; 15 — windshield wiper gearmotor; 16 — coolant temperature indicator sensor; 17 — ignition distributor; 18 — windshield washer electric motor; 19 — oil pressure indicator sensor; 20 — oil pressure warning lamp sensor; 21 — brake fluid level warning lamp sensor; 22 — plug socket for a portable lamp; 23 — relay for turning on headlight cleaners and washer*; 24 — relay for turning on low beam headlights; 25 — relay for turning on the high beam headlights; 26 — windshield wiper relay; 27 — additional fuse block; 28 — main fuse block; 29 — additional resistor of the heater electric motor; 30 — reverse light switch; 31 — brake light switch; 32 — heater electric motor; 33 — relay-interrupter for alarm and direction indicators; 34 — parking brake warning lamp switch; 35 — alarm switch**; 36 — cigarette lighter; 37 — switch for cleaners and headlight washers*; 38 — heater motor switch; 39- external lighting switch; 40 — three-lever switch; 41 — ignition switch; 42 — instrument lighting switch; 43 — lamp switches located in the door pillars; 44 — interior lamps; 45 — oil pressure gauge with insufficient pressure warning lamp; 46 — fuel level indicator with reserve warning lamp; 47 — tachometer; 48 — parking brake warning lamp; 49 — battery charge indicator lamp; 50 — control lamp for the carburetor air damper; 51 — side light indicator lamp; 52 — turn signal indicator lamp; 53 — control lamp for high beam headlights; 54 — speedometer; 55 — carburetor air damper warning lamp switch; 56 — relay-interrupter for the parking brake warning lamp; 57 — coolant temperature indicator; 58 — brake fluid level warning lamp; 59 — differential lock warning lamp; 60 - switch for differential lock warning lamp; 61 — rear lights; 62 — license plate lights; 63-sensor for level indicator and fuel reserve.
The order of conditional numbering of plugs in the blocks : a - windshield and headlight wipers, windshield wiper relay breaker; b — relay-interrupter for alarm and direction indicators; c — three-lever switch; d — hazard warning switch.
* Installed on parts of manufactured cars; ** on cars produced in the 90s, due to the installation of breaker relays 33 without the fifth terminal, the brown wire connecting switch 35 to breaker relay 33 is missing.
Features of the modification
First of all, the changes affected the engine management system and control instruments. In particular:
- The wiring diagram for Niva 21213 received an additional wiring harness in the engine compartment for connecting a microcontroller and sensors;
- On the Niva model of recent years of production, a more advanced power unit with the VAZ-21214 index is installed. Instead of a carburetor, it has a fuel frame with injectors from GM. The price of a car with injection has increased because of this;
- The instrument panel has changed - the design is borrowed from the VAZ 2108 model.
Unification of the instrument panel: LADA NIVA with a panel from VAZ 2108
Ignition system
The VAZ 21213 engine uses a non-contact ignition system consisting of:
- ignition distributor sensor (marking 3810.3706). It is responsible for creating control pulses supplied to the electronic switch;
- switch (model marking – 3620.3734) in climatic version U2.1 (corresponds to GOST 15150);
- ignition coils (marking 27.3705).
Electronic switch for VAZ 21213
Dashboard
A modified instrument panel appeared on the car. In particular, instead of a voltmeter, the manufacturer installed a low battery discharge lamp (no. 12 in the diagram).
Connection diagram of warning lamps and devices VAZ 21213 1997 onwards.
Engine control system VAZ-21214
Connection diagram of the VAZ-21214 engine management system with central fuel injection under US-83 toxicity standards with controller 21214-1411010 (EFI-4 type) on VAZ-21214 vehicles : 1 - “CHECK ENGINE” control lamp; 2 — instrument cluster (fragments); 3 — electric fans of the engine cooling system*; 4 — electric heater of the intake pipe; 5 — air temperature sensor; 6 — absolute pressure sensor; 7 — coolant temperature sensor; 8 — block connected to the throttle position sensor; 9 — central fuel injection unit; 10 — block connected to the idle speed regulator; 11 — block connected to the nozzle; 12 — diagnostic block; 13 - controller; 14 — knock sensor; 15 — speed sensor; 16 — oxygen concentration sensor; 17 - adsorber; 18 — battery; 19 - main relay; 20 — fuse block of the engine control system; 21 — relay for turning on the electric fuel pump; 22 — relay for turning on the electric fan*; 23 — relay for turning on the electric heater of the inlet pipe; 24 — electric heater protection fuse; 25 — starter activation relay; 26 — ignition relay; 27 — main car fuse box (fragment); 28 — spark plugs; 29 — tachometer; 30 — electric fuel pump with fuel level sensor; 31 — ignition module; 32 — crankshaft position sensor; 33 - courtesy light switch, located on the driver's door pillar; 34 — control unit of the automobile anti-theft system**; 35 — status indicator of the car anti-theft system**; A - wire going to plug “50” of the ignition switch; B - wire going to plug “15” of the ignition switch; B - wire going to terminal “30” of the generator; G - rear wiring harness wires connected to the fuel level indicator; D - rear wiring harness wire connected to switch 33.
The order of conditional numbering of plugs in blocks : a - controller; b — control unit of the automobile anti-theft system; c — indicator of the state of the automobile anti-theft system; g — speed sensor; d — central fuel injection unit; e — electric fuel pump and oxygen concentration sensor; g — ignition module; h - absolute pressure sensor.
Connection diagram of the VAZ-21214 engine management system with distributed fuel injection under Euro-2 toxicity standards with controller 2123-1411020-10 (type MP 7.0) on VAZ-21214 vehicles : 1 - control lamp of the engine management system; 2 — instrument cluster (fragments); 3 — electric fans of the engine cooling system; 4 — courtesy light switch, located on the driver’s door pillar; 5 — status indicator of the car anti-theft system; 6 — control unit of the automobile anti-theft system; 7-coolant temperature sensor; 8 — air flow sensor; 9 — throttle assembly; 10 — block connected to the throttle position sensor; 11 — block connected to the idle speed regulator; 12 - controller; 13 — oxygen concentration sensor; 14 — knock sensor; 15 — crankshaft position sensor; 16 — speed sensor; 17 - adsorber; 18 — battery; 19 - main relay; 20 — diagnostic block; 21 — fuse block of the engine control system; 22 — relay for turning on the electric fuel pump; 23 — relay for turning on electric fans; 24 — main car fuse box (fragment); 25 — block connected to the additional wiring harness*; 26 — ignition module; 27 - tachometer; 28 — electric fuel pump with fuel level sensor; 29 — nozzles; 30 — spark plugs; A - rear wiring harness wire connected to switch 4; B - wires connected to plug “1” of fuse block 24 (one wire goes to plug “15” of the ignition switch, and the other to plug “85” of the ignition relay); B - rear wiring harness wires connected to the fuel level indicator.
The order of conditional numbering of plugs in blocks : a - controller; b — control unit of the automobile anti-theft system; in - air flow sensor; g — speed sensor; d — indicator of the state of the automobile anti-theft system; e — electric fuel pump and oxygen concentration sensor; g - throttle pipe; h — ignition module.
Electrical connection diagram of the EURO-4 ME17.9.7 ECM for cars of the LADA 4x4 family with engine 21214
:
1 – controller; 2 – diagnostic block; 3 – mass air flow sensor; 4 – coolant temperature sensor; 5 – phase sensor; 6 – electric fuel pump module; 7 – pads for the instrument panel harness and rear harness; 8 – ignition coils; 9 – spark plugs; 10 – electronic accelerator pedal; 11 – throttle pipe with electric drive; 12 – electric fan of the engine cooling system, right; 13 – electric fan of the engine cooling system, left; 14 – knock sensor; 15 – pads for the ignition system harness and injector harness; 16 – nozzles; 17 – solenoid valve for purge of the adsorber; 18 – control oxygen sensor; 19 – diagnostic oxygen sensor; 20 – crankshaft position sensor; 21 – APS control unit; 22 – APS status indicator; 23 – ECM fuse block; 24 – fuse for the power supply circuit of the electric fuel pump; 25 – electric fuel pump relay; 26 – left engine cooling system electric fan relay; 27 – relay for the electric fan of the right engine cooling system; 28 – ignition relay; 29 – pads for the ignition system harness and instrument panel harness; 30 – instrument cluster; 31 – vehicle speed sensor; 32 – brake signal switch; 33 – clutch pedal position signal switch; 34 – main fuse block; 35 – additional relay; 36 – contacts of the instrument panel harness pads and the front harness; 37 – contacts of the instrument panel harness and rear harness pads
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turbomotor412 posted a number of diagrams in his BZ:
Let us remind you that you will find detailed instructions for repairing the Lada 4×4 SUV in this section.
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Fuse location
All fusible links used in the electrical circuit of the Niva 2121 car are divided into two groups.
They are located in the fuse boxes located under the dashboard to the right of the driver's seat. You can easily find a description of each of these safety devices, as well as their technical characteristics, in your vehicle's owner's manual. If any electrical equipment in your car has failed, the first thing you need to do is check that the fuse is working properly. To do this, it is very important to follow the following safety rules:
- Before replacing the fuse link, it is necessary to identify and eliminate the cause of its failure;
- In no case should you install fuses that do not meet the requirements of the car manufacturer;
- It is strictly forbidden to close the contacts of the inserts with any metal objects;
- Do not remove fuses from the block using a screwdriver or knife without first turning off the power supply.
In the figure below you can see a detailed diagram of the location of the fuses of the Niva 2121 car, as well as the connections of all electrical equipment.
Dashboard
For subsequent modifications of the VAZ 2121, the instrument panel was thoroughly redesigned. In particular, the design and location of the warning lamps have changed, and new scales have appeared on the instrument panel indicators.
Original wiring diagram for VAZ 21214 – instrument panel and warning lamp harness
All control devices are interconnected. This combination consists in particular of:
- speedometer;
- tachometer;
- coolant temperature indicator;
- 12 indicator lamps;
- battery charge sensor;
- fuel level indicator.
DETAILS: VAZ 2131 Niva: price of VAZ 2131 Niva, technical characteristics of VAZ 2131 Niva, photos, reviews, video
All of them are located on the panel.
The schematic diagram shows the combinations available on the instrument panel:
- tachometer (1);
- stabilizer (2);
- panel illumination (3);
- coolant heating indicator (4);
- gasoline level (5);
- toxicity reduction systems (6);
- heated luggage door glass (7);
- fog lights (8);
- high beam (9);
- outdoor lighting (10);
- turn signals (11);
- TG level (13);
- oil pressure (14);
- differential locks (15);
- fuel reserve (16);
- seat belts (17);
- parking brake (18).
D1, D2 are diodes (type IN4002).
Cars manufactured before 1996 also have a voltmeter (12 in the diagram).
Finally, there are two resistors:
- R1 – at 470 Ohm (0.25 W);
- R2 –51 Ohm, (5 W).
Niva index designations
Detailed electrical diagram of Niva
The wiring diagram may vary slightly depending on the design features of the vehicle.
First, let's look at the index notation:
- VAZ 21213. This index designates a vehicle equipped with a carburetor. The volume of the power unit is 1.7 liters.
- 21214. In VAZ 21214 cars, the scheme involves the use of a similar engine with the same volume. The only difference is that the car is equipped with a fuel injection system.
- There is another model with the index 21213. In VAZ 21213 cars, the electrical circuit includes the same elements, only depending on the year of manufacture, the car can be equipped with a 1.8 liter engine.
- Version 21073. The SUV is equipped with either an injection engine with nozzles or a Solex carburetor engine. One of the features of these cars is a contactless ignition circuit.
- 21215. These SUVs were originally produced for export, so these cars are difficult to find on our roads. It is worth noting that they were equipped with Citroen diesel engines.
At the beginning of the article there is a diagram of the VAZ electrical equipment using the example of the Niva 2121 model. If you are the owner of version 2131 or any other, then there will be a difference in the circuit diagram, but not fundamentally. If we are talking about carburetor engines, then in this case the battery charging circuit, as well as the ignition, will not be protected (video author - Nail Poroshin).
The structure of a car ignition switch
- Locking rod
- Frame
- Roller
- Contact disc
- Contact sleeve
- Block
- Protrusion of the contact part.
The lock mechanism is connected to many wires. They continue from the battery, connecting all the electrical devices of the car into a single chain. When you turn the ignition key, the electrical circuit is closed from the “-” terminal of the battery to the ignition coil. As a result, the current passes through the wires to the ignition switch, through its contacts it is directed to the induction coil, after which it returns back to the “+” terminal. As electricity passes through the coil, it generates high voltage, which it transmits to the spark plug. Therefore, the key closes the contacts of the ignition circuit, thereby starting the car engine.
What do the numbers in the Niva index mean?
The only thing the owners complained about was the car’s insufficient power, which did not allow it to realize its full road potential. There were objective technical difficulties associated with a shortage of production capacity, which the automaker managed to overcome over time.
In a word, the developers did not remain deaf to modern trends, proposing several modifications of power units for the VAZ 2121 Niva.
| Engine capacity | Injection system | Ignition system | Power, hp | Factory index |
| 1.6 l | carburetor | classical | 79 | VAZ-21210 |
| 1.7 l | carburetor | classical | 80 | VAZ 21213-1000260 |
| 1.8 l | carburetor 21073 Solex type or injector | contactless/injection - electronic with Bosch MP 7.0 controller | 82/85 | VAZ 2130-00 – carburetor VAZ 2130-20(26) – injection |
| 1.7 l | distributed fuel injection | contactless with BOSCH MP 7.9.7 controller. or JANUARY 7.2 | 83 | VAZ-21214-20 |
| 1.9 l | diesel XUD-9SD | — | — | VAZ-21215 |
Accordingly, the cars themselves received new indices linked to the installed power unit:
- A 1.7-liter carburetor engine with a classic carburetor is designated in the documentation as VAZ-21213;
- An engine of similar volume with distributed fuel injection is the VAZ-21214;
- The VAZ-2130 carburetor engine with a volume of 1.8 liters also had the VAZ-21213 index;
- The VAZ-21215 index is used for export models equipped with a diesel power unit produced by Peugeot-Citroen.
Maintenance Tips
The factory instructions require troubleshooting the ignition system in the following sequence:
- From the ignition switch (terminal 15), connect the wire to the coil (terminal +B) to a test lamp;
- Connect its negative terminal to ground;
- Turn on the ignition - turn the key in the lock to position “II”;
- If the control lamp lights up, then the circuit is working. If not, look for damage to the wire;
- With the ignition on, pull out the central wire from the coil from the distributor;
- Bring its metal tip to the cylinder block so that a gap of 3-4 mm forms between them;
- Turn on the starter for a few seconds;
- If the spark jumps, the coil is working.
Tip: you can quickly check the switch in one way - take it from a working car. If the car starts with the new switch, then you need to buy a new one.
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/
