Brakes - Description

DESCRIPTION

NOTE: The Electronic Stability Control (ESC) may also be referred to as Electronic Stability Program (ESP) depending on the vehicle model year and configuration. Certain components may also reference ESP, ESC, or use the traction control symbol.





The Antilock Brake System (ABS) is an electronically operated, four channel brake control system which is part of Electronic Stability Control (ESC) including Electronic Roll Mitigation (ERM). The vehicle also has Electronic Variable Brake Proportioning (EVBP) designed into the system which eliminates the combination/proportioning valve. The combined Hydraulic Control Unit (HCU) and ABS module is located forward of the master cylinder, under the engine air box.

The system is designed to prevent wheel lockup and maintain steering control during braking. Preventing lockup is accomplished by modulating fluid pressure to the wheel brake units.

The hydraulic system is a four channel design. All wheel brakes are controlled individually. The ABS electrical system is separate from other electrical circuits in the vehicle. The ABS module operates the system components.

ABS system major components include:

- Antilock Brake Module (ABM)
- Hydraulic Control Unit (HCU)
- Wheel Speed Sensors (WSS)
- ABS Warning Light
- Dynamics Sensor - The Dynamics Sensor includes a yaw rate sensor, (The Dynamics Sensor is located under the center console near the center of the vehicle).
- Steering Angle Sensor (SAS) - The SAS is part of the Steering Control Module (SCM) in the steering column.