Anti-Lock Brake System (Abs): Feature

• This ABS 5.3i type incorporates the hydraulic control unit, ABS control module, valve relay and motor relay in one unit for better productivity and lightweight.
• The ABS (Anti-lock brake system) electrically controls brake fluid pressure to prevent wheel "lock" during braking on slippery road surfaces, thereby improving directional/steering stability.
• If the ABS becomes inoperative, the fail-safe system activates to ensure it acts as a conventional brake system. The warning light also comes on to indicate that the ABS is malfunctioning.
• The front-and-rear wheels utilize a 4-sensor, 4-channel control design: the front wheels have an independent control design*¹ and the rear wheels have a select low control design*² .

*1: A system which independently controls fluid pressure to left and right front wheels.

*2: A system which provides the same fluid pressure control for the two rear wheels if either wheel starts to "lock".

Fig 1: Identifying Anti-Lock Brake System (ABS) Components