Component Locations - Sheet 1 Of 2: Overview

The anti-lock control - traction control system features a modulator, which is an integrated four-channel HCU (hydraulic control unit) and ABS module.

The ABS 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 module will actively intervene and operate the HCU during braking or vehicle maneuvers to correct the vehicle attitude, stability, traction or speed. During incidents of vehicle correction, the ABS module may also request the ECM (engine control module) to control engine power in order to further stabilize and correct the vehicle.

To provide full system functionality, the anti-lock control - traction control system comprises the following components:

• DSC switch.
• HDC switch.
• Four wheel speed sensors.
• Steering angle sensor.
• Yaw rate and lateral acceleration sensor.
• Stoplamp switch.
• Instrument cluster warning indicators.
• Integrated HCU and ABS module.

The anti-lock control - traction control system provides the following brake functions that are designed to assist the vehicle or aid the driver:

• ABS.
• ARM (active roll mitigation).
• CBC (corner brake control).
• DSC.
• EBD (electronic brake force distribution).
• Electronic brake prefill.
• ETC (electronic traction control).
• EBA.
• EDC (engine drag-torque control).
• EUC (enhanced understeer control).
• Gradient acceleration control.
• Gradient release control.
• HDC.
• Hill start assist.
• Trailer stability assist.

The HDC function is enabled either manually using the HDC switch, or automatically by the terrain response system, in the ignition on and engine running power modes. All of the other brake functions are automatically enabled in the ignition on and engine running power modes. The DSC function can be selected off using the DSC switch.