ABS Brake Components
Toll Free: 877-525-5233
ABS systems were designed to increase stopping performance. Skidding wheels have less traction and therefore take longer to stop than non-skidding wheels. Skidding wheels also put the vehicle in more danger of accident due to the lack of control. By monitoring and controlling the rate of deceleration of each wheel anti lock brake systems avoid this skidding.
ABS systems consist of 4 primary components:
ABS Controller; the brains of the system. ABS Controllers are a computer that reads the inputs and then controls the system to keep the wheels from locking up and skidding.
ABS Speed Sensors; there are generally one on each wheel (sometimes they are located on the differential). They let the ABS Controller know a wheel has locked up.
ABS Modulator/Valves; some system have separate valves for each wheel with a modulator to control them. Other systems they are combined. In either case they work with the controller and the pump to add or release pressure from the individual wheels brakes to control the braking.
ABS Pumps; since the ABS modulator/valves can release pressure from the individual wheels brakes there needs to be a way to restore the pressure when required. That is what the ABS pumps job is. When the pump is cycling the driver may experience a slight pedal vibration. This cycling is happening many times per second and this slight vibration is natural.
Brakeco.com your Brake Parts Warehouse can often supply remanufactured units. This includes many of the early system that often consists of individual components. In most vehicles 1999 and later the brain, modulator and pump are combined into one unit. If we canít supply a remanufactured unit we can have yours remanufactured. Call us at 877-525-5233 or email us email@example.com to check price and availability
There are other factors can cause ABS problems.
Be sure to check these before purchasing a new system
1. Incorrect Jump Starting; reversing of the connections (even briefly), can cause a relay or the main controller to burn out.
2. Different wheel sizes will confuse the controller and may give a speed comparison alarm
3. ABS Wheel sensors can and do fail. Check resistances to specifications.
4. ABS Sensor Leads can short to ground or break and cause an open circuit.
5. Sender wheels can crack or become warped giving an incorrect signal.
6. Excessive wheel bearing wear can cause gap between sensor and speed wheel to vary which can also produce a bad signal.
Please note these pictures are representative samples of the individual components. Your units may vary. Please call us at 877-525-5233 or email us at firstname.lastname@example.org and we'll help you find the right ABS components at the right price.
Toll Free: 877-525-5233
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