Diagram and pinout of the Niva 4x4 instrument panel (VAZ 2121, 2131) » Lada.Online

April 13, 2016 Lada.Online 207 079 4

Depending on the year of manufacture, different types of instrument panels were installed on the domestic SUV. Until about 1998, Niva 4x4s were equipped with instrument clusters made in Hungary, and after Avtopribor LLC (Vladimir and Podolsk). Let's look at the features of these panels in the diagrams.

Niva 4x4 instrument panel diagrams

Schematic electrical diagrams, connecting devices and pinout of connectors
1 – plug connector block with conditional numbering of plugs; 2 – tachometer; 3 – voltage stabilizer; 4 – instrument cluster lighting lamp; 5 – coolant temperature indicator; 6 – fuel level indicator; 7 – resistor 470 Ohm, 0.25 W; 8 – resistor 36 Ohm, 5 W; 9 – warning lamp of the toxicity reduction system;

10 – control lamp for heated rear window; 11 – fog light indicator lamp; 12 – control lamp for high beam headlights; 13 – indicator lamp for external lighting; 14 – indicator lamp for direction indicators; 15 – voltmeter; 16 – brake fluid level warning lamp; 17 – diode IN4002;

1 – tachometer; 2 – voltage stabilizer; 3 – instrument cluster lighting lamp; 4 – coolant temperature indicator; 5 – fuel level indicator; 6 – warning lamp of the toxicity reduction system; 7 – indicator lamp for heated rear window; 8 – fog light indicator lamp;

9 – control lamp for high beam headlights; 10 – indicator lamp for external lighting; 11 – indicator lamp for direction indicators; 12 – voltmeter; 13 – brake fluid level warning lamp; 14 – oil pressure warning lamp; 15 – differential lock warning lamp; 16 – fuel reserve warning lamp;

Let us remind you that on the website you can find reports on the modification or repair of a domestic SUV.

Key words: 4x4 instrument panel

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9.12.1 Design features of the instrument cluster

That’s why I’ll post the pinout for everyone else, so as not to rack their brains in the future. However, mechanical modification was not part of the task, the client was satisfied, and the last drawback - the discrepancy between the readings of the “fuel level sensor” and the actual remaining fuel in the tank due to the different geometric shape of the latter, will hopefully be eliminated in the near future.

Because of this, in order to see the outer lamps in the bottom row, you need to move your head slightly forward as the car moves. Their round scales are located in the center of the shield. MenuNode “Links”, tree. Diagram and pinout of the instrument panel of Niva 4x4 VAZ. All control devices of the car are combined into an instrument cluster.

Source

Installation of the VAZ 2110 dashboard on Lada 4×4 (VAZ 2121, 2131)

Lada 4×4 has been produced for more than 39 years and during this time the interior of the domestic SUV has remained virtually unchanged. However, you can make the car interior more comfortable with the help of various modifications. For example, install a more modern instrument panel from a VAZ 2110 on a Niva.

You will need: a VDO instrument panel with catalog number 21150-3801010, an instrument cluster trim (article: 21214-5325124-00), a speed sensor, for a carburetor Lada 4×4 you also need a gasoline level sensor from the injection system, at least 8 female terminals , wire 0.75 about 10 m.

We remove the old dashboard. The white and red blocks of the new instrument panel have a different pinout (see diagram of the Lada 4×4 panel), so the main task is to reconnect the wires in the right order.

Also interesting: Niva Chevrolet speed sensor - Auto magazine MyDucato

The differential lock was connected to the choke lamp. For turn signal lamps, additional wires should be laid from the hazard warning button. The wires for heating the rear window (green-red), rear foglights (orange-black) and turn signals (blue-white) remain unused.

We install and connect the speed sensor (the pinout of the sensor is on its plug). We connect the positive wire from the speed sensor to the upper left fuse box, and take the negative wire from the pin that holds the panel. And we bring the signal wire to the instrument panel.

It is worth noting that after installing the instrument cluster from the VAZ 2110 VDO with two windows, we not only get a more modern SUV interior, but also the ability to display the outside temperature, clock and voltmeter on the panel.

By the way, do you know how to tune a VAZ 2110 panel? For example, install an overlay, wells or tint!

Also interesting: Fuses and relays (location and purpose of fuses and relays) Niva Chevrolet

Pinout of contacts of the Niva Chevrolet fuse mounting block

The car is supplied to the market with several types of mounting blocks. The exact type of device depends on the configuration of the vehicle and its year of manufacture. Further description is given using the example of Bosch M,1,5,4:

• 1 – cylinder ignition system;
• 2 – empty;
• 3 – fuel pump connection contact;
• 4 – stepper motor;
• 5 – free;
• 6 – connection of the main power plant cooling fuse;
• 7 – incoming pulse from the MRI;
• 8 – empty;
• 9 – standard speedometer;
• 10 – not busy;
• 11 – knock sensor;
• 12 – voltage supply for sensors;
• 13 – L-line;
• 14 – weight on the body from the injectors;
• 15 – control of injector drives for cylinders 1-4;
• 16/17 – not used;
• 18 – power supply of devices from 12 volts;
• 19 – common ground cable for electrical appliances;
• 20 – ignition supply to cylinders 2 and 3;
• 21 – stepper motor terminal;
• 22 – engine check lamp;
• 23 – empty;
• 24 – mass of the stepper motor;
• 25 – air conditioning system relay output;
• 26/29 – stepper power plant;
• 27 – voltage to terminal No. 15 of the ignition switch;
• 28 – empty;
• 30 – mass of motor control sensors;
• 31/32 – not applicable;
• 33 – control of settings of injector drivers for cylinders No. 2/3;
• 34-36 – empty;
• 37 – device for powering the main relay;
• 38-40 – not used;
• 41 – submitting a request for an air conditioning module inside the cabin;
• 42 – empty;
• 43 – tachometer control signal;
• 44 – signal supply from the potentiometer;
• 45 – DTOZH;
• 46 – control of the main relay;
• 47 – device for confirming admission to ECU programming;
• 48 – low level of impulse from DPKV;
• 49 – opposite meaning;
• 50-52 – empty;
• 53 – receiving an impulse from the TPS;
• 54 – fuel consumption detail;
• 55 – K-line.

Purpose of the device.

A speedometer is installed on the Niva's instrument panel, which is necessary to display the current speed of the car. In the event of a malfunction, driving becomes difficult as most roads have speed limits that must be followed. In addition, a malfunction of the speedometer can affect the calculation of other data by the on-board computer. Based on the DS data, the required fuel consumption is determined and gasoline savings are ensured while idling.

Therefore, it is necessary to carry out diagnostics as soon as possible and identify the cause of the breakdown.

VAZ-2123 diagram after 2009

Connection diagram of the front wiring harness for Chevrolet Niva VAZ-2123 produced since 2009

Connection diagram for wiring harnesses of the left and right front doors on a Chevrolet Niva VAZ-2123 produced since 2009

Connection diagrams for the wiring harness of the engine management system for the Chevrolet Niva VAZ-2123 produced since 2009

Connection diagram of the instrument panel wiring harness on the VAZ-2123 from 2009

Connection diagram for the rear wiring harness on a Chevrolet Niva VAZ-2123 from 2009

Connection diagram of the wiring harnesses of the left and right rear doors of the VAZ-2123 from 2009

Connection diagram for the additional wiring harness of the tailgate of Chevrolet Niva from 2009

Connection diagram for the seat heating wiring harness for Chevrolet Niva from 2009.

Location.

On Niva DS is installed on the gearbox. This allows data to be read only while driving, turning off when the engine is in neutral.

The device itself consists of a plastic case, inside of which electronic components are located. For proper operation, it is placed in close proximity to the shaft. There is a built-in magnetic bar inside the shaft that creates electrical signals when rotated.

The product is quite fragile, so when dismantling or installing you must be extremely careful not to damage its body.

Checking the sensors.

In order to check the DC, you need to have a multimeter, then follow a certain procedure:

1. Turn off the sensor.
2. We connect the red (positive) probe to the DC contact.
3. We connect the black (negative) probe to ground.
4. We fix a tube of suitable diameter onto the shaft in order to be able to rotate it.
5. We switch the multimeter switch to low voltage measurement mode.
6. It is necessary to rotate the shaft and observe the readings: as the speed increases, the readings on the multimeter display will increase. If the readings do not change, the sensor is faulty.

Another method does not require removing the sensor. To do this, you need to jack up one wheel so that it is at a distance from the ground and can rotate freely. After this, you need to connect a multimeter to the DC connectors. You need to rotate the wheel and observe the readings of the device. A change in voltage will also indicate performance.

Replacement.

To remove the DS, you need to place the car on a level surface. After this, it is best to disconnect the battery terminals to avoid errors in the BC.

Disconnect the wire terminals; to do this, press the plastic lock on the block. After this, use a wrench to unscrew the sensor from its seat. If you cannot unscrew it immediately, it is not recommended to use excessive force. You need to treat the threaded connection with WD-40, wait a few minutes and continue dismantling.

Installation of a new DS is carried out in the reverse order. When purchasing a new part, you need to pay attention to the external condition: the contacts must be treated with a sufficient amount of varnish, as this protects them from moisture. After completing the work, it is necessary to reset the on-board computer errors in order to remove the CHECK ENGINE error.

Also interesting: VAZ clutch pedal position sensor

As for its location, look for the DS in the engine compartment in close proximity to the exhaust manifold. To be honest, the place where it is installed cannot be called ideal. While the car is running, the manifold heats up. The sensor wires rub against it, which over time leads to malfunctions and short circuits.

It doesn’t matter whether you have an injection car or a carburetor with a Europanel - the connection of the speed sensor to the instrument cluster is identical.

Replacing the VAZ speed sensor: step-by-step instructions:

1. Drive into the pit - it will be more convenient to work from below - and wait until the engine cools down.
2. Turn off the vehicle's power by removing the cable from the negative terminal of the battery. Do not close the hood after this, this will provide you with lighting.
3. Locate the speed sensor on the transmission. Clean it and everything near it with a rag to remove any dirt.
4. By pressing the spring clip, disconnect the wire block from the sensor.
5. Dismantle the sensor itself by unscrewing it counterclockwise - with your fingers or an open-end wrench to “22”.
6. Carefully, so as not to break anything, install a new part in place of the removed part. Connect the wire block to it and the procedure for replacing the speed sensor can be considered complete.

How to properly connect a new DS? It is important here that the device rod fits correctly into the fixing sleeve, otherwise rotation will not be transmitted to the sensor. If the sensor fits into the socket the first time, then everything is in its place, and if something prevents it from moving, then the rod did not fit into the bushing.

Ignition system

The operation of the internal combustion engine installed on the VAZ 2121 car is based on a classic scheme, a video of which is shown in driving courses:

1. The generator produces electric current;
2. The ignition coil increases its power;
3. The ignition distributor supplies electrical impulses to the spark plugs when the piston reaches TDC;
4. The spark plugs ignite the air-fuel mixture in the engine cylinders.

Factory wiring diagram of VAZ 2121: elements of the ignition system

The photo shows the following components:

1. From pos. 3 to 12 – ignition coil and its structure;
2. From pos. 13 to 20 – spark plug;
3. From pos. 21 to 42 – ignition distributor (distributor).

For reference: The distributor slider, which is responsible for closing the contacts with the high-voltage wires going to the spark plugs of each cylinder, is shown separately. In the diagram presented, it is indicated by pos. 41-45.

Engine modernization

The all-wheel drive transmission of the VAZ 2121, in addition to significant advantages, also had domestic disadvantages. In particular:

1. Fuel consumption was quite high compared to passenger cars (13.4 liters per 100 km in urban conditions and off-road);
2. This was reflected in operating costs - the price of 1 km was much more expensive for the owners. And the power of the existing engine was insufficient for harsh off-road conditions.

For reference: the automaker, by modernizing the existing engine, increased its technical parameters. In particular, the volume increased from 1480 cubic meters. cm up to 1680 cc see Cars with such a power unit received the factory index VAZ 21214.

An increase in engine displacement and the use of a non-contact ignition system led to the need to modernize the electrical circuit in the engine compartment. Replacing the VAZ 2121 wiring solved this problem completely.

Electrical wiring for VAZ 21214 installed on a car with a 1680 cc engine. cm

Ignition system modernization

Since the high-voltage coil is traditionally responsible for the sparking power, the automaker has made changes to its operation. In particular, the wiring on the VAZ 2121 was supplemented with a harness that connected the switch and other components of the ignition system.

Contactless ignition system VAZ 21214

This factory manual contains:

1. Ignition switch acting as an electrical circuit switch with pins 30/1 and 15;
2. Ignition relay with pins 85,86,30 and 87;
3. Switch with 6-pin terminal block;
4. Upgraded ignition coil with terminals “B” and “K”;
5. Distributor (ignition distributor);
6. Candles.

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

Conclusions: the owners of the VAZ 2121 car often serviced it themselves. And servicing electrical systems is impossible without original circuit diagrams. This was especially true for modernized versions, where changes were made to the operation scheme of components and assemblies.

How to check the VAZ speed sensor

A failed speedometer sensor in a VAZ car is easily determined - in this case, the speedometer stops working, and it may also show some signs of life, but display incorrect information.

Using a tube, pliers or other available tools, rotate the sensor axis. In this case, you should see the voltmeter readings changing: the higher the speed, the higher the voltage (from 0.5 to 10 V). If this does not happen, the sensor requires replacement.