Principles of Operation

Principles of Operation
The anti-lock brake control module simultaneously manages the anti-lock braking and traction control in conjunction with the engine control systems to maintain vehicle control during deceleration and acceleration.

When the ignition switch is put in the RUN position, the module will do a preliminary electrical check and, at approximately 20 km/h (12 mph), the hydraulic pump motor is turned on for approximately one half-second. Any malfunction of the anti-lock brake control system will disable the ABS and the traction control. The anti-lock brake warning indicator will illuminate. However, the power-assist braking system will function normally.

Electronic Brake Distribution
The electronic brake distribution (EBD) controls rear brake pressure and acts as an electronic proportioning valve. It is controlled by the ABS module. When EBD is disabled, the amber ABS warning indicator and the red brake warning indicator will illuminate.