Chevrolet Niva speedometer does not work

Niva Chevrolet speedometer does not work

Modern cars have a large number of sensors that correct the operation of the car. And they are all very strongly interconnected. If the Chevrolet Niva speedometer does not work, then there may be several reasons for this, ranging from the speed sensor to the electronic control unit. This, in turn, can lead to improper engine operation, increased fuel consumption and other problems. Therefore, a non-functioning speedometer is not only a problem with traffic control, but also a possible cause of major malfunctions. This means that it is urgent to diagnose the car.

In the Niva Chevrolet, the speedometer needle is driven not by a cable, as on old cars, but by an electronic control system, which is controlled by a magnetic sensor. The speedometer needle is an ammeter driven by the difference in current transmitted by the sensor.

If, as a result of diagnostics, a problem is identified with the instrument panel, then in most cases it may require a complete replacement, since it is non-repairable and its components are located on one board.

The speed sensor transmitting the impulse to the instrument panel is installed on the transfer case. These signals are transmitted to the ECU, where they are processed, engine parameters are read and transmitted to the instrument panel.

It is quite simple to determine problems in the operation of the speedometer: these are inflated indicators, for example, when a car shows clearly inflated speed indicators, the needle twitches during uniform movement or does not rise from the zero mark.

There are several main reasons that can affect the operation of the speedometer:

Mechanical damage to the instrument panel
Damage to wiring or contacts
Short circuit
Speed sensor failure
ECU failure

Some problems can be determined by connecting an OBDII sensor to the panel

If problems with the speedometer are accompanied by a Check Engine error, then in this case the problem will be related to the ECU. By checking it with a sensor, you can most likely detect error 0500.

First, you should conduct a self-diagnosis of the instrument panel. To do this you need to follow a few simple steps:

Turn off the ignition and hold down the button to reset the daily mileage
Hold the button to turn on the ignition
Release the button
If the instrument panel is working properly, then the instrument arrows should rise to the maximum division and return to their original position.

If the speedometer needle does not move or there are malfunctions in their operation, then the problem is in the instrument panel. You should disconnect it and check the condition of the contact blocks. It is possible that during operation due to vibrations, the contacts in the block became disconnected from the common bundle to the instrument panel.

Pin 9 is used to connect the speedometer. In some cases, for example, when repairing an instrument panel, it may be installed skewed, which may subsequently affect the operation of the system.

If these steps do not help, then you need to check the contact block on the speed sensor. To do this, you need to install the car on an inspection hole or overpass. It is located at the bottom of the transfer case and water and reagents used to treat roads can get on it.

After this, you need to check the wires leading from it to the speed sensor. The wire may fray or suffer other mechanical damage. The car body carries a negative charge - mass. And if the wire sheath is damaged, a short circuit may occur.

It is also necessary to pay attention to its condition. It is often made not only in a metal case, but also in a plastic one, which encloses a core with a winding and a rotor. Depending on the rotation speed, the level of current generated and, accordingly, the position of the speedometer needle depend.

This element is not repairable, since it is enclosed in a solid body. Therefore, if malfunctions occur, it must be replaced. You can check its performance using a multimeter. Before doing this, you need to remove it:

The terminals are disconnected from the sensor
The sensor is unscrewed
An inspection and assessment of its condition is carried out.
There are three terminals suitable for the sensor: minus, plus and central pulse. When checking, the multimeter is connected with a negative probe to ground, and a positive one to the central connector
A tube is placed on the sensor roller and the multimeter is switched to minimum measurement mode
Using the tube, the sensor rotates, and if it is working properly, the multimeter should show deviations from the rest state.

If the multimeter does not show the operation of the element being measured, it means that it is faulty and requires replacement.

Methodology for troubleshooting devices

When the coolant temperature gauge needle is constantly at the beginning of the scale, with the ignition on, disconnect the wire from the gauge sensor and connect the wire tip to ground.

If the arrow deviates, then the sensor is faulty and must be replaced, and if it does not deviate, then check the pointer in the instrument cluster and the wire connecting the sensor and the pointer.

If the temperature gauge is faulty, replace the instrument cluster.

The method for checking the fuel level indicator is similar to that described above.

If the pointer needle is constantly at the beginning of the scale and does not deviate after the tip of the wire disconnected from the sensor is shorted to ground, then check the pointer.

If the fuel level indicator is faulty, replace the instrument cluster.

Why the Niva Chevrolet speedometer does not work: reasons and repairs

Modern cars are packed with sensors like a Christmas turkey with apples. Moreover, all or almost all sensors are interdependent. If the speedometer on our Niva Chevrolet does not work, it may happen that the electronic control unit also receives incorrect impulses. And this affects engine performance , gasoline consumption, and power. A non-working speedometer is not just an inconvenience, it is a reason to look at the reasons and restore the system’s functionality.

The video shows how the speedometer on a Niva Chevrolet can “glitch”:

Basic functions of the device.

To control the speed of movement, a special device is installed on the dashboard - a speedometer. But it only displays the information received, and the speed sensor is responsible for collecting data. If it fails, it will create many dangerous situations on the road, since it will become difficult to control the speed limit in the city and on the highway. But besides this, thanks to the integration of the electronic control unit into the system, the speed sensor allows you to perform the following functions:

fuel consumption control
displaying information on the instrument panel
in cars with an automatic transmission it is included in the complex responsible for engine control

Reasons for a non-working speedometer: from simple to complex

In the Niva Chevrolet, the speedometer needle is driven not by a cable and a magnetic device, as in classic VAZs, but by electronics. The speedometer itself, like the rest of the instruments on the panel, are nothing more than voltmeters or ammeters with different scales.

The speedometer receives an electrical impulse, and the needle is driven by a simple stepper electric motor.

This is for information, because it is useless to poke into the speedometer itself, it is not repairable and if at least one element fails, you have to buy the entire instrument panel on the circuit board.

The speedometer receives an impulse from the speed sensor, and it is installed on the transfer case housing. These impulses are also monitored by the electronic engine control unit and, receiving them, draws its conclusions about the operating mode of the motor.

The signs of a non-working speedometer are quite clear - the needle either lies shamelessly, showing 160 at a speed of 20 km/h, or twitches, or falls dead to the zero mark.

Since there are not many elements in the electrical circuit of the Chevrolet Niva speedometer, there are only a few reasons for the device not working:

Mechanical damage to the speedometer itself.
No contact in any of the terminal connections.
Broken or shorted wire.
Failure of the speed sensor.
ECU malfunction.

Dashboard test and speedometer check

If the speedometer starts to work incorrectly and the Check Engine light comes on, then you should check the electronic control unit for errors.

If the ECU memory contains information about error 0500 , this indicates that something is wrong with the pulse coming from the speed sensor.

We’ll return to the sensor later, but for now we’ll check the entire dashboard for the functionality of each of the devices.

To do this, there is a panel self-diagnosis procedure. The verification process goes as follows:

Turn off the ignition and press the daily mileage reset button.
Do not release the button and turn on the ignition.
Let's release the button.
In this case, the arrows on working instruments should move three times from zero to the maximum division.

Everything is clear here - if the speedometer refuses to fulfill the test conditions, the problem is either in the device itself or in the tidy board. Most likely, you will have to change the board assembly.

Video about self-diagnosis

The video shows a VAZ-2112, but the principle is the same, and the panel is the same.

Checking the contacts of the speedometer and speed sensor

There are not many contact blocks in the speedometer circuit. It often happens that vibration causes the block moving from the common bundle of wires to the dashboard to move. To eliminate the possibility of losing contact in this place, you will have to move the device away and remove and insert the chip on the back of the panel board several times.

Pin No. 9 is the speedometer pin. Sometimes the block may simply be installed skewed , then the contact may be inconsistent or absent altogether.

The location of the speed sensor is schematic.

If this does not help, you will have to look for the contact connector on the speed sensor. As we said, it is located on the transfer case housing and its connectors often suffer from water and reagents that are sprinkled on the roads.

The contact needs to be disconnected and its condition assessed . In addition, the wires themselves that go to the speed sensor often come under attack. On a Chevrolet Niva with high mileage, the wire can easily fray, and if at least one of the three wires is damaged or shorted to ground, the speedometer will not work.

And the location of the sensor is not entirely successful; the wires can simply be torn out by a snag.

Checking the speed sensor

The design of the speed sensor is simple - it is a metal or plastic case, a ferromagnetic core and a winding in which the rotor rotates, generating an electrical impulse - the faster the sensor roller rotates, the greater the impulse, the further the speedometer needle deviates from zero.

Niva Chevrolet speedometer does not work

There are several main reasons that can affect the operation of the speedometer:

Mechanical damage to the instrument panel
Damage to wiring or contacts
Short circuit
Speed sensor failure
ECU failure

Some problems can be determined by connecting an OBDII sensor to the panel

First, you should conduct a self-diagnosis of the instrument panel. To do this you need to follow a few simple steps:

Turn off the ignition and hold down the button to reset the daily mileage
Hold the button to turn on the ignition
Release the button
If the instrument panel is working properly, then the instrument arrows should rise to the maximum division and return to their original position.

Pin 9 is used to connect the speedometer. In some cases, for example, when repairing an instrument panel, it may be installed skewed, which may subsequently affect the operation of the system.

Replacing a faulty speed sensor in a Sheva Niva

After identifying the problem, further actions depend on the reason for the problems in the work.

The following options are available to correct the current situation:

Dismantling the device, checking with a multimeter. The signal screen is also easy to disassemble. In case of serious malfunctions, it is easier to replace the device; repairs will be too expensive. The main thing is to dismantle the dashboard in advance to gain access to the interior panel of the car. The fixing nut from the device is also completely removed. After this, disconnecting the sensor itself will not be difficult.
Additional check on sensor contacts. Contamination or oxidation of contacts remain the causes that car owners encounter most often.
Examination of the sensor circuit to ensure integrity is maintained. To do this, take a multimeter and test the wires. Problems are usually associated with a short circuit or break in the contacts. It is best to replace damaged wires immediately, as they can operate in high temperatures, causing the connection to deteriorate.

The work is carried out in an inspection pit. Before dismantling, you must disconnect the battery.

The sensor is located on the rear cover of the transfer case. Before removing it, you must disconnect the terminals. They are held in place by a plastic retainer.

Then, using a wrench, the device is unscrewed from the seat.

If the device is firmly “stuck”, it is forbidden to use excessive force; it is better to treat the threads with a lubricant like WD-40.

Why the speedometer on a Chevrolet Niva does not work: reasons

The answers are below. In the Niva Chevrolet, the speedometer needle is driven not by a cable and a magnetic device, as in classic VAZs, but by electronics. The speedometer itself, like the rest of the instruments on the panel, are nothing more than voltmeters or ammeters with different scales.

The speedometer receives an electrical impulse, the speedometer arrow is driven by a simple stepper electric motor. Repair of the Niva Chevrolet speedometer is often not durable. This is for information, because it is useless to poke into the speedometer itself, it is not repairable and if at least one element fails, you have to buy the entire instrument panel on the circuit board.

The speedometer receives an impulse from the speed sensor, and it is installed on the transfer case housing. Since there are not many elements in the electrical circuit of the Chevrolet Niva speedometer, there are only a few reasons for the device not working: Mechanical damage to the speedometer itself. In some cases, the Chevrolet Niva speedometer does not work; when repairing the instrument panel, it may be installed skewed, which may subsequently affect the operation of the system.

Chevrolet Niva: speedometer does not work

If these steps do not help, then you need to check the contact block on the speed sensor. To do this, you need to install the car on an inspection hole or overpass.

It is located at the bottom of the transfer case and water and reagents used to treat roads can get on it. If there is an error there that says the Chevrolet Niva speedometer does not work, you will have to look for a place for an inspection hole, an overpass, a lift, where it would be convenient to get to. The appearance of this code may be due to a malfunction of the speed sensor itself or its mechanical drive.

We’ll return to the sensor later, but for now we’ll check the entire dashboard for the functionality of each of the devices.

Why the speedometer does not work on a Chevrolet Niva

Turn off the ignition and press the daily mileage reset button. Using a transfer case on a Chevrolet Niva.

Do not release the button and turn on the ignition. In this case, the arrows on working instruments should move three times from zero to the maximum division.

No contact in any of the terminal connections. Broken or shorted wire.

Diagnostics

Troubleshooting begins by disconnecting the wiring block from the speed sensor harness and checking them using a test light.

To make a control light bulb, you need any car lamp that can operate at a voltage of 12 V, and two wires about 1 meter long each. One of the wires is attached to the positive terminal, the second - to the negative terminal of the lamp. The resulting device also includes a Krona battery.

To carry out the test, one wire of the warning lamp is attached to the ground of the body or battery, and the second is made with short, frequent touches to the middle contact of the DC connector.

If there are no faults in the connector-speedometer section, the speedometer needle will slightly tremble or rise.

Also interesting: How to repair the front axle gearbox on a VAZ 2121 (Niva)?

If the needle shakes, the answer to the question why the speedometer does not work can be considered found - the speed sensor requires replacement.

In cases where the needle’s response to tapping on the central contact of the block cannot be detected, it is necessary to “test” the speedometer power circuit. The procedure is carried out using a multimeter (multitester), or by using the same light bulb - a control.

The wiring harness is first disconnected not only from the speed sensor block, but also from the speedometer itself. One terminal of the tester or warning lamp is connected to the end of the wire located under the hood, the other to the interior end of the speed meter current supply circuit.

If the tester in the “continuity” mode indicates a violation of the integrity of the circuit, further troubleshooting is carried out in this direction. It is necessary to check the fuses, the connection points of the wires, and their integrity inside the insulating braid.

Speedometer adjustment in Moscow - https://probeg-moskva.ru/glavnaya/avtomobili.html

The search area can be reduced by gradually “ringing” individual sections of the circuit. On model 2114 and other VAZ products, the cause of speedometer failure is often oxidation of the “mass” contacts attached to the car body.

In cases where the speedometer needle does not work, but there is no evidence of malfunctions in the electrical supply circuit, a logical conclusion is drawn about the malfunction of the device itself. Additional testing can be done by temporarily installing a known good instrument panel.

Why the Niva Chevrolet speedometer does not work: reasons and repairs

Failure of the speed sensor. ECU malfunction.

Dashboard test and speedometer check Error If there is error information in the ECU memory, this indicates that something is wrong with the impulse coming from the Chevrolet Niva sensor. How to disable the speedometer on a Chevrolet Niva - a few tips If the speedometer on a Chevrolet Niva is not working properly, but the indicator does not light up, then it’s time to diagnose the dashboard yourself. Simply press the button, which is used to reset the vehicle's daily readings - no need to turn on the ignition.

It will have to be turned on immediately after holding the button pressed for a while.

Warranty for winding (winder)

Installing the winder takes little time and does not require special knowledge.

Winding (winder) will allow you to increase the mileage of the car and set the desired value.

The odometer, controlled by the car's electronic on-board computer, is a very accurate device, however, in some cases it may give incorrect readings.

Changing the drive pair of wheels to non-standard ones, replacing the engine, or a number of other manipulations can lead to the fact that the odometer readings begin to lag behind the actual mileage of the car. This unpleasant situation can be corrected by rewinding the Chevrolet Niva speedometer.

Winding (winder) will allow you to increase the mileage of the car and set the desired value.

The odometer, controlled by the car's electronic on-board computer, is a very accurate device, however, in some cases it may give incorrect readings.