The Anti-lock Brake System (ABS) module, with or without stability assist, simultaneously manages the anti-lock braking, traction control and engine control systems to maintain vehicle control during deceleration and acceleration.
When the ignition switch is in the RUN position, the module carries out a preliminary electrical check and, at approximately 12 mph (20 km/h), the hydraulic pump motor is turned on for approximately one half-second. Any malfunction of the anti-lock brake system disables the traction control and stability assist (if equipped) and the anti-lock brake warning indicator illuminates. However, the power-assist braking system functions normally.
The Anti-lock Brake System (ABS) consists of the following components:
The front wheel speed sensors and front wheel speed sensor rings are integral to the front hub and bearing assemblies.
The rear wheel speed sensor rings are integral to the rear hub and bearing assembly.
The ABS with traction control and stability assist consists of these additional components: