The ABS system plays a special role in the work of the entire car, as it is responsible for safety during movement. Many drivers themselves do not know how to use the brake system, not as it should be. As a result, the operation of the ABS system is knocked down, which leads to an accident. Most often drivers are faced with such a problem.
Because of slippery roads, the driver constantly slows down when the car enters. In order to deal with the problem when the ABS light was caught fire and what to do in this case, you must first know how this whole system works.
The essence of the ABS system
The ABS system was designed specifically for drivers so that they see their errors when the brake is sharply pressing. In the ABS system initially, the blocking is not immediately programmed by all four wheels. With sharp braking, the wheels begin in turn to stop, which reduces the likelihood of car drift. As a result, this reduces the speed of the machine, but it should not stumble.
What enters the ABS system
- Wheel sensors that are responsible for their rotation. Each wheel is installed a separate sensor;
- Hydraulic unit;
- The device corresponding to the controlling work of the hydraulic unit itself;
- ABS dashboard ,.
The main causes of ABS system malfunction
If the ABS lights caught fire on the dashboard on the dashboard, this indicates the emergence of problems in the system. The driver needs to contact the maintenance service to find out the cause of this warning signal. When the system works fine, the light begins to burn during the installation of the engine, and after a few seconds it swings. This suggests that the system is proper, and it is in an active condition. There are such cases when the light bulbs burns, but the car does not start.
In this case, there are many reasons as:
- The problem is the connecting cables;
- ABS system control unit is not in charge;
- No connection with one of the sensors, which is fixed on the wheels;
- The sensor on one of the wheel or sensors on all wheels failed.
As for the cliff of the wire, it can happen during the movement of the car. During vibrations, when moving through poor roads, cables are beginning to weaken and at some point are shredded or completely broken. The driver will be able to solve the problem of this character on his own, not paying for help from professional professionals.
If the ABS sensor light is caught fire due to the failure of the sensors, then this may be the wines of the garbage that is clogged when driving. Such a problem, the driver will not be able to solve its own. It is required to take the car to the service station. Often, the reason not to work the sensors is associated with the incompetence of the master on a hundred. During the repair of the wheels, the sensors are constantly disconnected. Only after installing the masters them back, they forget to connect to the wheels. Incorrect wheel installation also leads to the fact that the ABS light bulb lights up.
With the ABS system you need to be extremely neat, because it can be broken quickly, and it will take a lot of effort, time and cash costs for their fix. If the ABS system light lights up due to a broken control unit, it is impossible to find out on its own. Save the ABS system only the on-board computer, which gives an error code. This code must be properly decrypted, because it is the cause of the system failure.
In the case of periodic power on and off, ABS light bulb should be known that there is a problem with contacts. The connection between the contacts is weak and therefore it is necessary to inspect the wires. Independently reveal the cause of the constantly burning of the indicator is much heavier.
Self disconnection of the light bulb
Sometimes the functioning of the ABS system is knocked down and in this case can not be asked for help in the technical service. For this there is an easy way. It is required to accelerate on a flat section of the road with an increased rate, and after dramatically slow down. Sometimes such a procedure helps to restore a knocked system and a light bulb ceases to light up.
If it did not help, only experts can come to the aid, which distribute the system on a special computer and make the exact conclusion why the ABS light lights up. It is impossible to regret the money for such a service, since the safety of life is not only the driver, but also passengers who can be in the car depends on this.
Most modern and not very cars (be it Opel Astra or Subaru Legacy) have a huge amount of electronics created for maximum comfort when driving, additional control of movement, avoiding dangerous situations. The presence of problems is reported by the alarms, like ESP (it is "anti-quasin"), induction speed sensor (triangle), antibux, handbrack indicator (exclamation mark), ESC sensor (course stability system), anti-lock brake system light bulb (ABS, ABS). Sometimes the indication works in itself, without visible to the reasons. The flashing "Gillanda" near the speedometer causes surprise and concerns, both from experienced motorists and newbies, barely received their own auto cars. In this article, we consider one of the most common situations - when the ABS sensor is burning.
Causes of ABS error
Why is the ABS lamp burning? The triggering of this indicator takes place for several reasons:
- incorrect operation of sensors in auto wheels;
- malfunctions with anti-lock brake control unit;
- malfunction of cables responsible for signal transmission;
- the crown on the hub (front or rear), from which the ABS reads the information spoiled.
The signal can turn on as when driving and before the start of the ride when the engine started to start. Problems are peculiar to those who like to ride off-road - sensors are dusting dust, mud, moisture, severe shaking breaks the wires. The control unit will take such violations, the sign will light on the dashboard instantly.
Sometimes the wrong actions of the owner of the car lead to breakage. Often incorrect replacement of parts (hub bearing, shrines, pads, and so on) leads to the fact that the system begins to flash. With it simultaneously on the shield can be spoken by manual brakes, ASRA, anti-Sanos and other "anti". In this case, it is necessary to check whether a replacement was made and did not have any problems during the inverse installation of parts.
What if the ABS light is caught fire?
The anti-lock brake system is designed to eliminate possible problems while driving, prevent errors from the driver when working with the pedal. With a sharp braking ABS, it will not fully block the wheels, excluding the skid, for example, on slippery areas of the road - the machine gently reduce the speed. They saw that the ABS was burning on the torpedo - reduce the pressure on the brake pedal. Further the car will do everything for you.
Important! The presence of a similar system in the car is not a reason to gas on ice and quickly ride a wet road. Remember that the indicators, buttons and signals do not work if the driver does not behave incorrectly.
The ABS failure threatens the fact that at the right moment the system will not work properly. At best, the car will knock on the obstacle, at worst - the outcome will be lethal.
Options for self-diagnostics of the system, if ABS is on the instrument panel
About the presence of errors of the operation of a node reports on-board computer. The display will display a code corresponding to a certain problem.
Important! Set of error codes, their designation is bred. It all depends on the manufacturer. Claim the decryption is needed in the user manual, or on the Internet.
Diagnostics can be carried out on your own. You can do something from the list below.
- Independent control test. On a dry area of \u200b\u200bthe normal road, we accelerate to 100 km / h. Turn off the radio, close all windows, listen carefully. Have you heard a crash (front, rear, with the right or left side)? Putton hub bearing is possible.
- Visiting car washes. In the process of cleaning, indicate that special attention is paid to the disks and hubs. Careful cleaning will eliminate the spontaneous air of the ABS check.
- Check fuses. If the one burned out what is responsible for the anti-lock system, replace.
- We put the car to the jack, carefully study the sensor area, check the integrity of the cables. Noticed corrosion or dirt? Gently clean. After that, the inclusion of the ABS should disappear.
The most reliable way (and the most expensive) is to send a car to the diagnostics to the service center. Thanks to the special equipment, experts may find a malfunction quickly and accurately. As an option, you can take care of the acquisition of such equipment, but its price may be completely inexperienced for some.
ABS light bulb air fix
With proper timely diagnostics, get rid of problems or adjust the operation of the system is quite easy. During operation, the driver is able to affect the operation of the unit - through the ABS or valves module pump. In addition, much depends on the causes of malfunctions. Sometimes the sensors and wires of the ABS are working and are located in a place, and the jetty module itself. In this case, the output one is to change the module, since the repair of its manufacturer did not think.
If the problem lies in the on-board computer malfunction, you need to reset the settings. But, naturally, only after the complete check of sensors, cables and modules.
How the ABS state indicator should work
Ideally, when the system is proper, and there are no problems, the ABS icon is on when Ignorated. The car simply checks the electronics, reporting this on the board - buttons with indicators start blinking or glowing. After making sure the signal passes normally, the icon starts to go out in a couple of seconds after launch. Sometimes the ABS continues to burn, sometimes the inclusion of the icon occurs at the time of movement. This indicates a malfunction of the brake system. It is necessary to check and, if you need, repair.
Reasons for spontaneous inclusion of ABS fault indicator
With the correct execution of functions, the abs light bulb is burning, reporting the unlocking of the wheels. Electronic insides understood that the ABS must be launched. The presence of other indicators (for example, the ESP) will allow the car to cope with the wet road or forefater.
Typically, the signal is triggered due to malfunctions. That's when the ABS error is on:
- sensors are clogged with dust, moisture, mud;
- rusted the sensor;
- eCU problems: the device lights indicators spontaneously, for no reason;
- shalit running, shifting the ABS sensor;
- fuse burned.
The ABS sign is burning in any car, regardless of their class, destination or how to install the drive - front, rear or both. As an example - the line of auto Volkswagen of the end of the 90s: there is a check of the ABS, even if the malfunction did not touch the brake system.
Consequences of faulty abs
ABS, like any other element of the car, is able to wear, losing reliability over time. The essence of the system is to ensure proper braking. Each wheel has a "personal" sensor, which allows you to gradually adjust the braking and reduce the speed without blocking all the wheels at once. The system that works is incorrectly cannot do this.
It is possible to turn off the ABS, but it is still not worth doing. If the ABS incorrectly performs functions, suspension damage is possible. The ABS lamp, triggered in a unusual situation, threatens the fact that the driver simply will lose control over management.
What to do in different situations if the abs light bulb on the instrument panel is burning
When the ABS speaker is constantly burning, make sure that there are no problems of individual elements (diagnostic methods are provided above). If, after repair, the light is not going to shine, it may be necessary to reflash the computer or pay attention to other nodes of the car - sometimes the system works if something else refuses to work.
Refuse the system by turning it off - is not the best option, especially for modern cars. In most ABS models, it is connected to the running part, its disconnection will negatively affect the functioning of the entire car.
The error code indicates the failure (breaking in the chain or short circuit) of the speed sensor of a specific wheel (for example, rear right)
As mentioned above, a certain sensor has a specific sensor on each ABS wheel. When an error code occurs related to the sensor failure on a specific wheel, do not rush to replace the sensor. Perhaps the breakdown happened - make sure the network cables may be the purpose of the network, it may have left the connector or threw it at all.
The error code indicates the absence of a sign of a specific wheel rotation sensor
The situation is similar to the previous one, but now the problem is with the sensor. Change the sensor is only with strong wear. The problem is sometimes caused by the wrong position of the sensor. Consider the place of its installation, make adjustments, start the motor and trig. If the problem is not eliminated, the icon lights up again.
Failure of electric valve pressure regulator
This malfunction affects the operation of the system as a whole. The icon will continuously burn, and the ABS will not properly perform its functions. Replacing a working or absolutely new system.
Fault for power circuit
This case may not be completely associated with the malfunction of the ABS (at least, the diagnosis does not indicate them). It is necessary to check the fuses. Usually the replacement of the one that is responsible for the anti-lock system solves the problem.
Lack of CAN bus
A serious problem, as it affects the operation of electronics as a whole. CAN bus is one thick wire, binding all nodes and chains. The emerging cliffs, waste from the connector, require access to the service center. The constant absence of ABS signals and other sensors will prompt about such a breakdown.
After replacing the bearing
Motorian forums contain topics with a common heading: "ABS is burning after replacing (insert the item)." Repeatedly, the problem occurs after replacing the hub bearings. It all depends on the brand and model of the machine. The problem is associated with improper installation or damage in the process. Also quite often damage the cables or the system sensor itself. Repeated "opening" and eliminate the problems that have arisen.
After replacing the hub
After replacing the hub, the anti-lock system is crazy. As in the previous situation, damage to the wires, the sensor is possible. If the elements of the system are integer, it is necessary to check the gap between the sensor and the comb newly installed hub - it should not exceed 1 mm.
After replacing the shoe
Another possible option. Installing new pads can also be accompanied by a violation of the operation of the system due to a large clearance, cable break, damage to the sensor. It is possible to clog the sensor with lubricant - the problem is eliminated with cleaning.
Everything is simple: if the ABS icon lights up on the instrument panel, then the braking system is faulty. This does not mean failure of the entire brake system, but we consider it necessary for the reasons for this and consequences.
What is abs
The anti-locking system does not give the wheels to "stand" with a sharp braking, dosing the power of a slowdown. ABS usually increases the braking path, but leaves the driver controllability. The modern ABS system may also include an anti-slip system, dynamic stabilization devices and emergency braking system (BAS). A complex of such systems works for the benefit of the active safety of the car.
The ABS device includes several main components, including:
- Wheel speed and acceleration speed sensors located directly on the hubs;
- Hydraulic unit comprising electromagnetic valves, pump and hydroaccumulators (actuating devices);
- Electronic control unit (ECU), providing system operation in the most efficient mode. On the basis of the information collected from sensors, the device sends commands to ABS actuators.
Causes of lighting of the light bulb of the anti-lock system
Normally, the ABS indicator on the instrument panel lights up for a few seconds and goes out each time the engine starts. If the icon is not displayed at that moment, the system is inactive and its verification is required. The reasons why ABS light bulb can be somewhat:
- Wiring;
- ABS sensors are contaminated, disabled or failed;
- Damaged gear on the wheel hub;
- The electronic system control unit does not function.
Regardless of which reason the ABS is lit, the regular on-board computer collects problems about problems and analyzes it to generate an error code. The detection of a particular malfunction indicates the same, warning lamp.
What is dangerous breakdown ABS
If the indicator does not light up due to the blinking light, it is not difficult to solve the problem. Just replace it with a new one or with the help of service staff. In the event that the anti-locking system indicator caught fire during the car movement, be extremely attentive with sharp braking. Of course, the full loss of control will not happen, but can drive the car. The system failed will not allow the car while the brake pedal is pressed, the more neatly drive around the obstacles.
What can be done before a trip to the car service?
If violations are detected in the operation of the ABS, it is necessary to conduct a visual inspection of the elements of the system.
- Checking the electronic control unit for the presence of water inside the device and damage to the housing is made after disconnecting the brake tubes and wires. The unit of the ECU is located rado with the brake force distributor. If you have discovered a liquid, the device must be purned and dried. To ensure security, it is important to disconnect the battery.
- Fuse service can also be checked on their own. Several electronic components belonging to the anti-lock system are on the overall panel under the hood.
- Wires connected to the sensors on wheels, it is also desirable to inspect. To do this, lift the body of the car by jack so that the wheel of the wheel hub has been clearly visible. Such a check allows you to detect flying or fitted wires.
If, after the actions described, the ABS light continues to burn, check the activity of the system in motion. Expand the car up to 40 km / hour and sharply press the brake pedal until it stops into the floor. With good ABS, vibration is felt, there are no twisted twitching system with an unblocking system. To carry out a thorough examination of the components of the ABS, the machine must be delivered to the verified car service. Wizards using an autotester will conduct computer diagnostics and analyze the error code of the anti-lock system. Sometimes it is possible to eliminate the problem "dropping" the error with the removal of the battery terminal.
When any car malfunction occurs, contact the official service centers of Favorit Motors. Qualified specialists have a complete list of services for maintenance, diagnosis and repair of cars of foreign and domestic brands. Our masters take regular training in authorized training centers, which guarantees high quality of service at reasonable prices. We use only original spare parts and reliable consumables. Take care of the safety of your car, trust professionals!
Before the appearance in cars in the 70s of the 20th century, the ABS system was less secure, if you compare them with today's modern cars. Especially this concerned that moment when the driver had to move or wet, or on a snow-covered garbage. In those years, old cars are usually equipped with not very high-quality wheels (tires), not quite reliable rear-wheel drive, as well as the usual and simple brake system without any electronics. But today, as you know friends, everything has changed for the better. Nowadays, most of the drivers are not even thinking about the modern brake systems standing on cars. Today, each of us (drivers) feels behind the wheel of the car confidently and reliably, even when moving or specifically ison. The thing is all next. Most modern machines in our time are equipped (equipped) with front-wheel drive, which gives drivers confidence when finding an auto drive. And moreover, these cars are also equipped with the latest modern electronic security systems that control the adhesion of the car with a road surface, and excellent modern rubber, which demonstrates on a slippery road just some wonders of clutch with such a track. One of the most important systems in any modern car today is the anti-lock brake system (ABS), which significantly reduces the braking path of the machine and prevents the wheel blocking, which can lead to loss of adhesion with the road and, accordingly, further to the drift.
The "ABS" system has become in the automotive industry already with standard equipment, it is actually installed at our time to each modern car manufactured by automotive companies. As we have already already written, this system "ABS" consists of several parts, namely, from the speed sensors, which are set specifically on the wheel wheels, from the electronic control unit of the anti-lock brake system, and also hydraulic valves, which on a specific electronic block signal here -Well regulate in each wheel a certain braking force without resorting to the help of the driver (without his participation).
Wheel sensors "ABS" track the speed of rotation of each vehicle wheel and constantly transmit data to the auto computer. As soon as the system unit "ABS" begins to notice (see) that the wheel ceases to rotate, then it will then activate the valve of the hydraulic brake system and it in turn instantly begins to reduce the brake pressure in this wheel itself. As a result, the pressure of the brake fluid in the wheel is also dropping and the braking force decreases, which contributes to further unlocking the wheel and return the clutch with the road. This process through the computer is repeated several times per second and until the car does not stop or the driver himself will not release the brake pedal.
The control unit "ABS" and a car computer every time the ignition is turned on automatically performs the self-testing of the anti-lock brake system. That is, every time you start the car immediately there is an automatic "ABS" system. In the event that during the self-test, the auto-computer is not enough from sensors, from the ABS control unit and from the brake hydraulic valves, the car lights up the signal lamp with the "ABS" icon. For example, let's say if the car's computer or the same control unit "ABS" did not receive the reverse signal from the brake system hydraulic pump or from the same valve installed on each wheel, then the "ABS error" signal will immediately light up on the tidy (on the panel). In the form of an icon (indicator).
Please note your attention specifically to that, namely, despite the malfunction of the "ABS" system and the appearance on the dashboard of its burning "ABS icon" in the car itself, as a rule, the mechanical brake system continues to work and you can safely work Without fear, continue moving by car, but without this electronic system in the help of blocking wheels during braking. That is, in other words, we can say that when the "ABS" system crashes, you can safely use your car. True, in this case, it is necessary to be extremely careful when braking on a wet, snow-covered or slippery road, since without this system "ABS" the wheels of your car can be rejected. Therefore, we do not recommend friends in the event of a malfunction of the ABS system to operate your car without appropriate repair for a long time. Thus, all drivers should understand that in case of issuing a "ABS error" auto-computer, it is necessary to establish the cause of this malfunction as soon as possible and eliminate it in the shortest possible time.
Malfunction of the "ABS" system.
And so let's say. In your car, the instrument panel burns the warning lamp or the icon warning of you about problems with the anti-lock brake system. What should be done in this case?
First, first, you must make sure that the icon light indicator indicates the problem with the "ABS system", and not for the malfunction of the entire braking system of the car.
To do this, you must carefully listen to your car when braking and pay your attention to the brake pedal. If during braking you started to hear extraneous noises (whistles, knocks, screenshots, etc. sounds) or the brake pedal in the car became too soft (softer than usual), then your task is a direct road to the technical autocentre, where experts Must carry a thorough diagnosis of the entire brake system of the machine. Please remember that all these signs indicate a serious malfunction of the entire brake system of the car, which can lead you while driving to the accident. Therefore, remember friends if the brakes of your car have become very bad, soft and not quite ordinary, we do not recommend that you leave onto the road of general use with such brakes, as it can be very dangerous. In this case, you need to call the tow truck.
Also, to specifically find out that the light icon-symbol "ABS" of faults caused exactly the anti-lock braking system of the car, you need to also make sure that the car did not hit the brake system, that the brake pedal on the car is still tough, and not Too soft, and more make sure that there is no brake system. To do this, you must first check the level of the brake fluid in the tank, and then only all brake tubes and hoses for the subject of depressurization or cliff.
Among other things, it is necessary to remember that when the ignition is enabled, seeing such a tanned "icon-symbol ABS" on the dashboard, it is not necessary to panic. Maybe this is just the usual error of the electronics of the car. Therefore, in such a situation, it is necessary to turn off the ignition and remove the key from the lock, and then re-enable the ignition and check again, whether the "icon-symbol" icon "appears on the tidy (on the panel). You need to repeat this process several times. It is possible that this is really a computer computer error and after several such inclusions and ignition shutdens This ABS error will simply disappear.
If you still after several attempts to turn on and off ignition, this "ABS" system error does not disappear on the dashboard, that is, it will not disappear, then you have two options:
The first; - Go to the car service and spend a thorough computer diagnostics of the entire car. The main feature of the diagnostics of the ABS system is as follows, that is, in the electronic survey of the block "ABS" with the help of special equipment to all sorts of errors in its system.
Using such diagnostics, a specialist will quickly determine the "code" code of errors in the ABS system, which specifically led to the appearance of the ABS icon of the ABS icon on the dashboard.
Also, this very "error code" will give a specific prompt, where it is necessary to seek the cause of the problem of the entire "ABS" system.
The second option needs only those drivers who want to get to this very truth on their own and their own. In order not to use (not apply) expensive diagnostic equipment testing equipment "ABS", you need a service manual to your car (book on repair and operation of your car model), also a simple car tool that is sold in any auto shop and naturally multimeter with high resistance (with high impedance). If you can not find on sale the necessary book on the repair of your car model, please look for it on the Internet "Internet" or download it to your computer or your smartphone.
We pay friends your attention to the following that in some cars you can get direct access to the diagnosis of the same "fault codes", which are stored in the car's computer, and all this without using a special diagnostic scanner. To do this, you need to check each electronic block of your car (including the "ABS" control unit) using an old proven method, namely, using two simple wires that you must connect to the appropriate connectors of the electronic machine systems. For example, you can connect these two wires to check the circuit closer in the same control unit "ABS", for which you need to connect these two wires directly to the control unit "ABS" and closer with a pin or ordinary clip. If, after this procedure, the ABS icon icon error from the dashboard will disappear, then the reason for such an error is in the control unit itself of the anti-lock brake system. Similarly, in the same way, you can connect with a clip or pins and without the use of wires, other specific and necessary contacts.
If dear motorists your car is equipped with a more modern computer, where the error detection diagnoses is carried out only by connecting the scanner to the diagnostic port "OBD II" (on-board diagnostic), then to establish the cause of the ABS icon appearance on the dashboard. It will take only the electronic diagnosis that you can make either in the technical center, either yourself, but already with the help of your boring error scanner to port "OBD II".
Suppose the following that you do not have any error information in the car's computer, which led to the appearance of the ABS symbol icon on the dashboard. Do not rush to carry out computer diagnostics. To begin with, check the "ABS" control unit fuse. After all, a common cause of the "ABS" system malfunction becomes the usual fuse of the anti-lock brake control unit.
And so follow further, you checked the "ABS" control unit fuse that was in working condition. What to do now? And now you must use the multimeter to check the voltage and resistance in all electronic parts of the "ABS" system. To do this, familiarize yourself with the manual and repair of your car namely, with all the relevant control values \u200b\u200bof the voltage and the corresponding resistance in the "ABS" sensors and in the electronic unit "ABS".
True, you must not forget before this check the main harness of the wires that are connected to the control unit "ABS". Carefully inspect the entire harness of wires responsible for the performance of the entire "ABS" system for damage. Also, pull the connector of this wiring harness from the control unit "ABS" and inspectatively all the contacts in the connector, for pollution or oxidation. All contacts with wires in the harness must be clean. If the contacts need cleaning, then with the help of a special aerosol spray to clean electrical contacts and connectors, take and clean the connector from this contamination.
Also, when inspection of the contacts of the "ABS" wiring harness connector, pay attention to corrosion of contacts. Please remember that even microscopic chemicals of oxidation and corrosion can seriously affect the resistance in the electrical circuit of the "ABS" system. On wires, as many know, a small voltage of electricity (millivolts) and even the slightest increase in resistance due to contamination of the connector contacts can lead to improper operation of the entire electronic part of the ABS system, and also cause an error in this system, which leads to Safety on the Dashboard indication "ABS".
If the controller of the "ABS" system looks integer and is in working condition, and the disconnection of the ABS wiring harness connector from the anti-lock brake system does not help you solve the problem of the burning "ABS icon icon" on the dashboard, then it's time to check the speed of rotation speed sensors Wheels that transmit information to the ABS control unit. To do this, it is necessary to initially measure the resistance of these sensors, verifying them with the control values \u200b\u200bspecified in the repair manual of your car.
If it is resistance within acceptable norms, then proceed to the visual inspection of the wheel speed sensors themselves, the wires themselves suitable for them and the inspection (inspection) of the state of each axis of the gear gear (or on each hub), which are installed in the machine on each wheel . As a rule, such sensors related to mechanical sensors were installed on old cars.
Also, today in many modern cars are currently used sensors that need to be powered by electricity. As a rule, "ABS Sensors" based on the "Hall Effect" (inside the sensor, a semiconductor plate is installed), which, when interacting with a magnetic ring on the wheel hub, fix the change in the magnetic field itself and the electron formation rate on the plate inside the ABS sensors.
Unfortunately, not in all cars these "ABS Sensors" and Wires, by which the signal from the sensors is sent to the ABS system control unit, are reliably protected from aggressive external environment. Ultimately, may fail due to damage and getting dirt on them.
In order to check the status of the wheel speed sensors and the ABS wire wires, it is necessary to start, remove the wheels from the machine, namely, lift the car to the jack from the right side and take each wheel.
So you will get free access to sensors and wires.
If, when inspecting the wiring harness of the "ABS" system and wheel speed sensors, you have detected some damage (or the wheel speed sensor is not securely fixed or hangs), you can assume that you have found the reason for the appearance of an error on the dashboard, which and Reported you about the malfunction of the "ABS" system.
But if you examine these wires and "ABS sensors", you did not find any external damage on them, then remove all the "ABS" system speed sensors from the hub (or from the axis) and check their resistance as we have already spoken using a multimeter ( If you did not do it before). The control values \u200b\u200bof the resistance in the rotational speed sensors can be viewed in special books on the repair and operation of your car model.
We also advise all car owners from time to time to inspect the wires of the rotation of the wheels of the "ABS system", do it even if the anti-lock braking machine works properly and the "ABS icon" icon does not light up on the dashboard. The point here is that, all the wires and wheels rotation sensors are located at the bottom of the car and they are constantly susceptible to the aggressive effects of the external environment. Remember friends that the most important enemy for wires and sensors is salt, which is contained in the road reagent, in water and in the snow.
What reasons are the "ABS" indicator on the dashboard, if the sensors and control unit with the Wires "ABS Systems" are required?
If, after testing, you found that all the electronic parts of the ABS system are in good condition, and the "ABS icon" icon on the dashboard is still on, most likely the problem itself is associated with the hydraulic system of the ABS system valves, which Unfortunately, not subject to partial repair.
In order to exclude the fact of errors in braking, because many concepts have no idea how to brake on the car, ABS was created correctly. It allows you to effectively, without leaving even in ice. Modern motorists are already so accustomed to this system that put them behind the wheel of a car that is not equipped with such an option, there are no problems. Therefore, for many is a big tragedy, if one day light bulb caught fire.
Indication of the normal system operation mode
On all cars on which the system is installed, the ABS indicator lights up when the ignition is turned on. This is a kind of system verification and demonstration to the driver that the system is active. Then, after a few seconds, the bulb should be ground. If this did not happen, or if during the movement, ABS light bulbs suddenly tanned, then with obviously there are problems, to solve that necessary in the near future.
Therefore, answering the question why the ABS light burns? - We give advice - look for a problem in the brake system or in electronics, which carries out help when braking.
The most common reasons why ABS light burns
- The problem that occurs very often is a malfunction of one of the ABS. Near the caliper of each wheel is installed ABS sensor. And it is worth out of order at least one of them, the system will immediately inform you about it, highlighting the ABS symbol on the dashboard.
- A similar problem is an ABS block coupling with sensors. It may be a closure in contact wires, problems with the contact itself.
- Faults associated with the control unit itself. Error in his work, or failure.
What to do with this problem?
Perhaps this section of our article you expect the most. Well, let's try to give you some useful tips.
As noted, the problem may wage in unreliable contact. To install it, you need to check all connections. 4 contact plug is available for each wheel, i.e. Directly near the sensor itself, and 5 contact - in the subcontrol space, find it will not be a problem, oriented on the VUT.
Dispatternize each contact, clean it from dirt if necessary, then connect again. If it did not help, go further. If on-board computer is installed on your car, you can find an error in the operation of the system using it. True, the computer will give you only a kind of code. By this code, you can find information about the fault on the Internet. If there is no side computer, then nothing can be done.
