In other words, you will usually only notice a problem when you need the system the most. Generally when an ABS module fails, you will only notice when you slam on the brakes. If you notice that your wheels are locking up while you’re driving, then this obviously means that your ABS control module is faulty or damaged. The whole purpose of an ABS control module is to prevent locking of the wheels. Once you find this out, get to a mechanic and have the module replaced right away. If you have a bad control module and then find yourself having to stop quickly, you may be in for a rude awakening.īelow are some of the most common symptoms that will let you know that your ABS control module is failing. The ABS control module ensures that you drive safely and securely on the road. Always brake in a straight line when possible. If you attempt to steer with a light rear end, the car could easily spin. While you’re braking, the weight of the vehicle pitches forward, leaving the rear end of the car very light. Note: it is generally a very bad idea to brake and steer at the same time even if you have ABS equipped.
#PURPOSE OF ANTI LOCK BRAKING SYSTEM FULL#
You will still be able to maintain some control over the vehicle’s steering under full braking.
#PURPOSE OF ANTI LOCK BRAKING SYSTEM DRIVER#
Stopping distances are reduced substantially and it is easier for the everyday driver to stop as quickly and consistently as possible. This process repeats several times per second as long as a tire is losing grip under braking.ĪBS systems give you much better braking control over the vehicle. After that, the ABS module will reapply the brakes on that wheel. If one tire is spinning substantially slower than the others while you’re braking the vehicle, the brake caliper on that particular wheel will be released very briefly so that tire can regain grip. The ABS system works to limit tire slip by using wheel speed sensors to detect the speed of each tire. This is because a rolling tire has more grip than a slipping tire. During a slide, you are more likely to lose control over the vehicle and your stopping distance will increase substantially. Under heavy braking, one or more tires may lock and could initiate a slide. If this clamping force exceeds the available traction between the ground and the tire, that tire will actually stop spinning.
Most malfunctions of the anti-lock brake system and traction control system, if equipped, will cause the yellow ABS warning indicator to be illuminated.When you press on the brakes, the brake calipers force the brake pads to clamp down on the brake rotors.When the vehicle speed goes below 20 km/h (12 mph), the ABS turns off.This is a normal function of the self-check by the anti-lock brake control module. At this time, a mechanical noise may be heard. Each time the vehicle is driven, as soon as vehicle speed reaches approximately 20 km/h (12 mph), the anti-lock brake control module turns on the pump motor for approximately one-half second.During vehicle operation, including normal and anti-lock braking, the anti-lock brake control module monitors all electrical anti-lock functions and some hydraulic operations.When the ignition switch is turned to the RUN position, the anti-lock brake control module will perform a preliminary self-check on the anti-lock electrical system indicated by a three-second illumination of the yellow ABS wanting indicator. [li[The 4-wheel anti-lock brake system is self-monitoring. Loss of hydraulic fluid in the brake master cylinder will disable the anti-lock system.However, normal power-assisted braking remains. Malfunction of the anti-lock brake system will cause the anti-lock brake control module to shut off or inhibit the system.The anti-lock brake control module monitors the electromechanical components of the system.
Once the affected wheel comes back up to speed, the anti-lock brake control module returns the solenoid valves to their normal condition allowing fluid flow to the affected brake.If that wheel is still decelerating, it opens the solenoid valve for that circuit.The anti-lock brake control module then looks at the anti-lock brake sensor signal from the affected wheel again.
This prevents any more fluid from entering that circuit.
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