System Description

SYSTEM DIAGRAM

Component	Description
BCM	System Description
Combination meter	Combination Meter
Steering angle sensor	Steering Angle Sensor
ABS actuator and electric unit (control unit)	ABS Actuator and Electric Unit (Control Unit)
ADAS control unit 2	ADAS Control Unit 2

ADAS CONTROL UNIT 2 INPUT/OUTPUT SIGNAL ITEM

Input Signal Item

Transmit unit	Signal name		Description
ABS actuator and electric unit (control unit)	CAN communication	Vehicle speed signal (ABS)	Receives the wheel speed of the four wheels
Combination meter	CAN communication	System selection signal	Receives a selection state of each item selected with the combination meter
Steering angle sensor	CAN communication	Steering angle sensor signal	Receives the amount of rotation, rotational angle, and rotational direction of the steering wheel
BCM	CAN communication	Turn indicator signal	Receives an operational state of the turn signal light and hazard light

Output Signal Item

Reception unit	Signal name		Description
Combination meter	CAN communication	Meter display signal	Transmits a signal and displays the status on the vehicle information display

FUNCTION DESCRIPTION

Operates when the vehicle speed is 37 MPH (60 km/h) or higher.
Detects the steering status and judges the attentiveness of the driver. The driver's attentiveness is shown on the vehicle information display in eight stages (level indicator).
When it is judged from the degree of minor swerving in the steering operation that the vehicle is drifting, the driver is prompted to exert caution by the drift warning, which displays on the combination meter.
When the engine is stopped, the system is reset.

OPERATION DESCRIPTION

The DAA (Driver Attention Alert(DAA)) is controlled by the ADAS control unit 2.
ON/OFF of the DAA is performed by using the combination meter.
The steering angle sensor detects the degree of swerving in the steering operation.
When the ADAS control unit 2 judges that the steering operation is drifting it transmits the meter display signal to the combination meter.

OPERATION CONDITION

ADAS control unit 2 performs the control when the following conditions are satisfied.

note	DAA system ON/OFF can be set on the information display. When the engine is stopped, the system is reset. The DAA system may not function properly, depending on the situation.

CANCEL CONDITION

The ADAS control unit 2 cancels the operation when the system is under any conditions of the operation cancellation condition.