DEFINITION
An ABS (Anti-lock Braking System) sensor is a key component of modern vehicle braking systems. ABS is a safety system designed to prevent wheel lockup during hard braking or in low-grip situations, such as braking on a slippery surface.
There are two types of ABS sensor:
- Hall effect
- Inductive
LOCATION
Front wheel: On many vehicles, the ABS sensor is located at the rear of the front wheel assembly. It may be mounted near the wheel bearing or near of the brake disc.
Rear Wheel: On some vehicles, especially those with rear wheel drive, the ABS sensor may be located at the rear of the rear wheel. It is also located near the wheel bearing or near the brake drum.
Wheel hub: In some cases, the ABS sensor is integrated into the wheel hub or wheel bearing. In these situations, the ABS sensor is not a separate component, but is part of the wheel hub unit.
COMMON FAULT SYMPTOMS
- Dirt or waste accumulation
- Physical wear or damage
- Loose or corroded electrical connections
- Faulty ABS sensor
- Reluctance ring problems
FAULT EFFECTS
- Deactivation of the ABS system
- Loss of traction in low-grip situations
- ABS warning light activation in dashboard
- Wheel alignment problems
- Interference with other safety systems
