Antilock Brakes / Traction Control Systems: Description and Operation: Overview

Anti-Lock Control - Traction Control

OVERVIEW
The anti-lock control - traction control system features an ABS (anti-lock brake system) module attached to a 4-channel HCU (hydraulic control unit). The integrated ABS (anti-lock brake system) module and HCU (hydraulic control unit) is located in the rear left side of the engine compartment, and is installed in the brake hydraulic circuit between the brake master cylinder and the four brake calipers.
The ABS (anti-lock brake system) module is connected to the high speed CAN (controller area network) bus, and actively interacts with other vehicle system control modules and associated sensors to receive and transmit current vehicle operating information.
When required, the ABS (anti-lock brake system) module will actively intervene and operate the HCU (hydraulic control unit) during braking or vehicle maneuvers to correct the vehicle attitude, stability, traction or speed. During severe incidents of vehicle correction, the ABS (anti-lock brake system) module will also request the ECM (engine control module) to reduce engine power in order to further stabilize and correct the vehicle.
To provide full system functionality, the anti-lock control and traction control system includes the following components:
- DSC (dynamic stability control) switch.
- HDC (hill descent control) switch.
- Four wheel speed sensors.
- Yaw rate sensor.
- Steering angle sensor.
- Instrument cluster warning indicators.
- Integrated ABS (anti-lock brake system) module and HCU (hydraulic control unit).
The anti-lock control and traction control system also provides the following brake functions that are designed to assist the vehicle or aid the driver:
- ABS (anti-lock brake system).
- CBC (corner brake control).
- DSC (dynamic stability control).
- EBD (electronic brake force distribution).
- ETC (electronic traction control).
- EBA (emergency brake assist).
- EDC (engine drag-torque control).
- HDC (hill descent control), with gradient release control.
- Hill start assist.
- RSC (roll stability control).
- Terrain response system integration.
- Trailer stability assist.