ABS braking system (Anti-lock Braking System) is one of the most important components of modern cars, which has the task of maintaining car control during heavy braking and preventing the wheels from locking. One of the main components of this system is the ABS brake system control unit or ABS brake block. D
What is the ABS brake system control unit?
ABS brake system control unit (also known as ABS brake block) is an electronic and hydraulic unit that is responsible for managing the performance of the anti-lock braking system. This unit usually consists of three main parts:
Electronic module: which is responsible for processing the signals sent from different sensors.
Hydraulic module: which is responsible for controlling the hydraulic pressure of the brakes.
Pumps and valves: which help to accurately adjust the brake pressure in each wheel.
Troubleshooting the ABS unit is a system for controlling and preventing the wheels from locking in cars. By detecting and controlling the brake pressure and wheel speed, this system provides the possibility of preventing the wheels from locking and increasing control and strength during braking. The braking performance of the ABS unit is based on the information received from the wheel speed sensors and pressure sensors. Braking takes place. If the system detects that the wheels are locked, a signal is sent to the control unit and its return valves open and close. This action causes the brake pressure in the wheels to decrease and then increase again, to lock the wheels. This action is repeated alternately so that the wheels do not lock during braking and the driver can control the car properly. An orange or yellow warning will flash brightly. In most cases, if the control unit is damaged, the wheel speed sensors or brake pressure sensors need to be replaced. ABS unit braking is very important in cars and significantly improves braking performance when braking in conditions such as slippery roads, poor traction and Braking in a straight line creates. This system allows the driver to have full control over the car while braking and minimizes the possibility of tire wear. If you see a breakdown, you should go to a specialized repair shop to diagnose and repair the problem. Repair may include replacing damaged parts, repairing wiring, or reprogramming the unit.
Failure symptoms and troubleshooting of the ABS unit
Symptoms of ABS unit failure can indicate a serious problem in the car's braking system. Some symptoms of ABS unit failure are as follows:
1- ABS and brake lights turning on at the same time: If the ABS and brake lights in the car turn on at the same time and remain on, this indicates a serious problem in the ABS braking system. In this case, you should stop the car quickly and ask for professional car assistance. Failure to pay attention to this warning can lead to serious accidents, because the ABS brake system is not able to function properly and you must focus on its repair.
2- Improper operation of the brake pedal: If the car's brake pedal does not work properly and hard compression is felt in it, this may be a sign of a problem with the ABS pump. This situation is dangerous and you must take care of it seriously to save your life and the passengers of the car.
3- Hardening of the brake pedal: If you need more force to brake and the brake pedal becomes harder, this may be due to the failure of the ABS pump. Of course, this problem can also be due to the failure of the brake booster or vacuum hose.
4- Locking of brakes and wheels: If the brakes and wheels lock while driving, this indicates a problem in the ABS system. If the ABS system works properly, it prevents the wheels from locking. Therefore, the failure of this system to work correctly can cause the brakes and wheels to lock, which you should immediately do to fix this problem.
Symptoms of sensor failure
ABS sensors are used in cars to control and prevent wheels from slipping during braking. But sometimes these sensors may fail and their performance decreases. One of the most common signs of ABS sensor failure is the ABS light on the car's computer screen. Any problem in the ABS sensors will cause the ABS light to turn on. If this problem occurs, you should see a professional to check the error code and fix the problem. Other symptoms of ABS sensor failure include delayed braking. If there is a problem in the ABS sensor, the ABS system will not be activated in a shorter time and the car will stop with less delay. This may cause instability and frustration in the driver. In this case, you need to investigate the problem and repair the error codes. Slamming the brake pedal is another sign of ABS sensor failure. If the wrong signals are sent to the ABS unit through the sensors, you will encounter the brake pedal when braking. In this case, you need to replace the ABS sensors. The ABS sensors guide the ABS unit with the necessary information to maintain the stability of the car in different conditions. If the ABS sensors do not brake in wet conditions, you will lose control of the car and the ABS unit will not work properly. In this case, you must repair the faulty ABS system viruses and replace the ABS control unit if necessary.
Reasons for failure of abs brake sensor
ABS brake sensors are one of the important parts in the car brake system, which are used to control and optimally manage the brake pressure. If these sensors are damaged, they will affect the performance of the brake system and brake pressure regulation and may cause serious dangers to the driver and other passengers. One of the common reasons for the failure of ABS brake sensors is that the sensor cable is torn and damaged. These cables may be scratched, bent or broken due to use for a long time, and as a result, the communication between the sensor and the brake control system is interrupted. External damage can also be a factor in the failure of ABS brake sensors. Colliding with hard objects or sudden impacts can cause the sensors to burst or break. If the ABS brake sensors come into contact with contaminated materials such as oil, dust, water or mud, these contaminants can accumulate on the surface of the sensor and impair the sensor's performance. to influence This issue may cause incorrect errors in the braking system or reduce the possibility of basic detection of the braking aspect by the sensors. Some other factors such as increasing the distance between the bearings or mechanical damage to the wheel encoders can also be the cause of the failure of the ABS brake sensors. These problems may affect the placement and performance of the sensors. and cause unpredictable and incorrect operation of the brake system.