To reduce the risk of traction loss and skid, research shows that an anti-lock system installed in a vehicle will decrease the chance of an accident by up to 18%. This is risk mitigation is reached through controlled rotational speed of each wheel through metering the brake line pressure.
A typical ABS system integrates sensors that are placed near the wheel to monitor their rotation speed. The data is transferred to the computer module, and preset algorithms assure full control by the system over the braking module. This module computes all four while sensor input and this, in turn, check if one of the wheels is turning slower than the rest. In this instance, the system will tell the valve to reduce the brake line pressure and control the pump’s action to make sure the wheel or wheels roll in sync with the others.
The ABS system detects faults, activates the response and generates a log in the system memory. This log is what turns on the warning light. Since ABS is a real-time function, the warning light will remain on until the system has corrected itself, after which it will turn off.
However, in the instance that there is no traction issue, the problem of the warning light could be in the sensors. To test your ABS module, you will need to go through a number of steps, and this is what you will need to do:
If you are not a car mechanic or a professional driver, do not do this alone for the first time. ABS systems are delicate and making changes without understanding them will lead to more damage.