System Description

Intelligent 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.
Intelligent trace control function is aimed to enhance traceability at corners and smooth the vehicle movement to provide confident driving.
When the VDC is turned OFF the VDC system, the intelligent trace control system is also turned OFF.
When the intelligent trace control is operated, intelligent 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 System Description .
When the intelligent trace control is not functioning properly, the master warning lamp illuminates. Warning message "Chassis control" will also appear on information display.

NOTE:

The intelligent 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 intelligent trace control operation. Also operation noise may be noticeable during operation. These are not abnormal conditions.
When the intelligent trace control is selected OFF, some functions will be kept ON to assist driver. (For example, avoidance condition.)

OPERATION CHARACTERISTICS

Intelligent trace control helps enhance the transition from braking into and then accelerating out of corners. Intelligent trace control utilizes the vehicle's electrically-driven intelligent brake system to help improve cornering feel by automatically applying brakes. Furthermore, Intelligent 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:

Component	Signal description
ECM	Mainly transmits the following signals to chassis control module via CAN communication: Accelerator pedal position signal Engine torque signal Engine speed signal
TCM	Mainly transmits the following signal to chassis control module via CAN communication: Current gear position signal
ABS actuator and electric unit (control unit)	Mainly transmits the following signals to chassis control module via CAN communication: Front LH wheel speed signal Front RH wheel speed signal Rear LH wheel speed signal Rear RH wheel speed signal ABS operation signal TCS operation signal VDC operation signal Stop lamp switch signal Vehicle speed signal (ABS) Yaw rate signal Side G signal Decel G signal VDC OFF switch signal Brake fluid pressure signal Steering angle sensor signal Mainly receives the following signal from chassis control module via CAN communication: Intelligent trace control signal
Chassis control module (with built-in steering angle sensor)	Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN communication: Steering angle sensor signal Steering angle sensor malfunction signal Intelligent trace control signal Active ride control signal
Combination meter	Mainly receives the following signals from chassis control module via CAN communication: Chassis control malfunction signal Intelligent trace control display signal