System Description

The steering operation condition by the driver and the information from multiple sensors are computed by the chassis control module, and a command is transmitted to the ABS actuator and electric unit (control unit).
The ABS actuator and electric unit (control unit) controls the brake based on the command from the chassis control module.
When cornering, driver operation is reduced and vehicle behavior is smoothened.
When the VDC function is turned OFF with the VDC OFF switch, active trace control function also turns OFF.
The active trace control function can be turned ON/OFF by operating the steering switch. However, even when turned OFF, a portion of functions (emergency avoidance, etc.) turn ON.
When a malfunction occurs in active trace control function, the master warning lamp illuminates and the information display in the combination meter informs the driver.

NOTE:

Active trace control function may not be effective in all driving environments (traction conditions, etc.).
When active trace control function operates, vibration may be transmitted to the brake pedal, an operation sound may be heard, and a feeling of deceleration may be felt. These are not symptoms of malfunctions and indicate normal operating conditions.
Even when active trace control function OFF is selected with chassis control setting, it is not turned completely OFF continues to provide assistance in scenes where steering load is in the high excess range (emergency avoidance, etc.).

OPERATION CHARACTERISTICS

This performs assistance when switching from deceleration (brake operation) to acceleration (accelerator operation) when driving on a curve. It operates the brake automatically to stabilize cornering and smoothens acceleration in the longitudinal and lateral directions.

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The brake is controlled according to the steering operation condition of the driver and the cornering condition of the vehicle.

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For the purpose of improving responsiveness during excessive steering operation, such as emergency avoidance steering, etc., the brake is applied to the inside wheel of the steering direction and causes turning momentum to be generated.

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The brake is controlled according to the steering operation condition of the driver.

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When driving on a curve, change of the steering operation angle is controlled, vehicle movement is smoothened and cornering with a stable feeling is realized simultaneously by controlling the brake on the inner wheel, according to accelerator operation.

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The brake is controlled according to the steering operation condition of the driver and the cornering condition of the vehicle.

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When performing quick lane changes and other excessive steering operations, the brake is operated automatically, and erratic vehicle behavior due to steering operation is reduced.

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The brake is controlled according to the steering operation condition of the driver and the cornering condition of the vehicle.

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SYSTEM DIAGRAM

NOTE: TCM is applied to CVT models.

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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 parts	Signal description
ECM	Transmits the following signals to chassis control module via CAN communication: Accelerator pedal position signal Engine speed signal Estimate drive torque signal Request drive torque signal Request drive torque status signal
ABS actuator and electric unit (control unit)	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 TCS operation signal VDC operation signal Side G signal VDC OFF switch signal Brake fluid pressure signal Steering angle signal VDC accept permission signal Receives the active trace control signal from chassis control module via CAN communication.
BCM	Transmits the stop lamp switch signal to chassis control module via CAN communication.
IPDM E/R	Transmits the ignition switch ON signal to chassis control module via CAN communication.
TCM	Transmits the following signals to chassis control module via CAN communication: Current gear position signal CVT target gear ratio signal
Combination meter	Transmits the active trace control setting change request signal to chassis control module via CAN communication. Receives the chassis control malfunction display request signal from chassis control module via CAN communication.
Steering angle sensor	Transmits the steering angle sensor signal to chassis control module via CAN communication.