What are the two wires of the ABS sensor?
2 Answers
ABS sensor two wires are electromagnetic coil and wire system, ABS sensor is a wheel speed sensor, used to detect the speed of the wheel. The role of the ABS sensor is: 1, to give full play to the effectiveness of the brake, shorten the braking time and distance; 2, can effectively prevent the vehicle from skidding and tail flicking during emergency braking, with good driving stability; 3, can turn during emergency braking, with good steering maneuverability. The symptoms of a damaged ABS sensor are: 1, cannot prevent the tire from locking during emergency braking, which is a safety hazard; 2, the ABS fault light will come on and the brake pads cannot be reset. The causes of ABS sensor damage are: 1, ABS wheel speed sensor failure; 2, ABS line connection failure; 3, ABS control unit programming failure; 4, ABS master cylinder failure.
Those two wires on the ABS sensor—I've figured them out after driving for over a decade. The signal wire transmits wheel speed data to the computer control module, while the power wire supplies electricity to keep the sensor operational. Simply put, the signal wire handles data transmission, and the power wire ensures it stays powered. If either wire breaks or gets damaged due to aging, the ABS light will come on, disabling the anti-lock braking function during stops—extremely dangerous in high-speed emergencies. I remember my old Corolla skidding on a rainy day because the right front wheel sensor circuit shorted from mud buildup. When repairing, always check for wire wear, loose connectors, and use a multimeter to test voltage stability. These small details determine driving safety—never skip regular maintenance to avoid bigger problems down the road.
