Most injuries cause focal brain damage, damage confined to a small area of the brain. The focal damage is most often at the point where the head hits an object or where an object, such as a bullet, enters the brain. In addition to focal damage, closed head injuries frequently cause diffuse brain injuries or damage to several other areas of the brain.
As the wheel speed sensor is located very close to the braking system, the high heat generated by the brakes cause the wheel speed sensor to be more susceptible to damage. This in turn makes it one of the more common causes of the ABS light coming on. Unresponsive Hydraulic Pump or Valve.
The two reasons for an ABS light to come on are to test the function of the bulb or to warn the driver that some type of fault has occurred in the anti-lock brake system. Some of the common reasons for an ABS light to come on include: 1  Standard bulb check. 2  Low fluid. 3  Faulty control unit. 4  Bad speed sensor or wiring problem. 5  Failed or failing pump. 6  Solenoid malfunction.