System Description

• Active trace control function controls the braking utilizing the ABS actuator and electric unit (control unit), depending on cornering condition calculated from driver's steering input and plural sensors.
• Active trace control function is aimed to enhance traceability at corners and smooth the vehicle movement to provide confident driving.
• When the VDC OFF display is used to turn OFF the VDC system, the active trace control system is also turned OFF.
• When the active trace control is operated, active trace control graphics are shown on the information display of combination meter. These are shown only when "Chassis control" is selected on the information display. Refer to Chassis Control Display .
• When the active trace control is not functioning properly, the master warning lamp illuminates. Warning message "Chassis control" will also appear on information display.

NOTE:

• The active trace control may not be effective depending on the driving condition. Always driving carefully and attentively.
• Brake pedal may vibrate and brake pedal feel may change during active trace control operation. Also operation noise may be noticeable during operation. These are not abnormal conditions.
• When the active trace control is selected OFF, some functions will be kept ON to assist driver. (For example, avoidance condition.)

OPERATION CHARACTERISTICS 

Active trace control helps enhance the transition from braking into and then accelerating out of corners. Active trace control utilizes the vehicle's electrically-driven intelligent brake system to help improve cornering feel by automatically applying brakes. Furthermore, active trace control will apply selective braking to help create increased steering response in S-turns. For example, if driving through an S-turn that starts with steering to the right, the right-side brakes are engaged to create a yaw momentum and help turn the vehicle.

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• Brake control amount is controlled according to steering operation status by the driver and vehicle cornering status.

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• During cornering, the brake control system limits changes in steering angle by controlling the inner ring brakes according to accelerator pedal operation and allows smooth movement of the vehicle to achieve stable cornering.

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SYSTEM DIAGRAM 

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INPUT SIGNAL AND OUTPUT SIGNAL 

Major signal transmission between each unit via communication lines is shown in the following table: