System Description

FUNCTION DESCRIPTION

In the vehicle-to-vehicle distance control mode, the Intelligent Cruise Control (ICC) system automatically maintains a selected distance from the vehicle traveling in front of own vehicle according to that vehicle's speed (up to the set speed), or at the set speed when the road ahead is clear. With ICC system, the driver can maintain the same speed as other vehicles without the constant need to adjust the set speed as driver would with a normal cruise control system. The following items are controlled in the vehicle-to-vehicle distance control mode

When there are no vehicles traveling ahead, the vehicle-to-vehicle distance control mode maintains the speed set by the driver. The selectable speed ranges are as follows:
- Between approximately 30 and 144 km/h (20 and 90 MPH)
When there is a vehicle traveling ahead, the vehicle-to-vehicle distance control mode adjusts the speed to maintain the distance, selected by driver, from a vehicle ahead. The adjusting speed range is up to the set speed.
When the vehicle traveling ahead has moved out from its lane of travel, the vehicle-to-vehicle distance control mode accelerates and maintains vehicle speed up to the set speed.

NOTE:

When the accelerator pedal is depressed, the brake operation and the warning are not performed by the ICC system.

OPERATION DESCRIPTION

Quickly push (less than 1.5 seconds) and release the ICC MAIN switch ON. The ICC MAIN switch indicator, set distance indicator, own vehicle indicator, and set vehicle speed indicator come on and ICC system is set to a standby state.

ADAS control unit 2 performs the control as per the following:

Constant speed	Comparing the set vehicle speed with the current vehicle speed, transmit the command to ECM via CAN communication to reach the set vehicle speed, and controls the electric throttle control actuator.
Deceleration	When a vehicle ahead (slower than driver set vehicle speed) appears or when a vehicle ahead slows down, the system controls the electric throttle control actuator into the close direction and decelerates the vehicle. If greater deceleration is necessary, the system transmits the brake fluid pressure control signal to the ABS actuator and electric unit (control unit) via chassis control module and operates the brake.
Following	The system controls electric throttle control actuator and the brake fluid pressure to keep the proper distance between the vehicles according to the vehicle speed change of the vehicle ahead.
Acceleration	When a vehicle ahead is not detected because of it changes lanes or own vehicle changes lanes during the following driving, the system controls the electric throttle control actuator in the open direction and accelerates the vehicle to the set vehicle speed slowly.

Set Condition

Under a standby state, pushing down the SET- switch will start system control.

When vehicle speed is between approximately 30 and 144 km/h (20 and 90 MPH)
When vehicle speed is below approximately 30 km/h (20 MPH) if the vehicle ahead is detected. The set vehicle speed becomes 30 km/h (20 MPH).

NOTE:

When the SET- switch is pushed under the following conditions, the system cannot be set and the set vehicle speed indicator will blink for approximately 2 seconds.
- When traveling below 30 km/h (20 MPH) and the vehicle ahead is not detected.
- When the selector lever is not in the "D" position or manual mode.
- When the parking brakes are applied.
- When the brakes are operated by the driver.

When the SET- switch is pushed under the following conditions, the system cannot be set.
- When the VDC is OFF. (To use the ICC system, turn ON the VDC system, push the ICC MAIN switch to turn OFF the ICC system and reset the ICC system by pushing the ICC MAIN switch again.)
- When ABS or VDC (including the TCS) operates.
- When the wheel is slipping. (To use the ICC system, make sure the wheels are no longer spinning, push the ICC MAIN switch to turn OFF the ICC system and reset the ICC system by pushing the ICC MAIN switch again.)

Cancel Conditions

When own vehicle is travelling below the speed of 30 km/h (20 MPH).
When the parking brake is applied.
When the VDC system is turned off.
When the VDC (including the TCS) operates.
When distance measurement becomes impaired due to adhesion of dirt or obstruction to the distance sensor.
When a wheel slips.
When the distance sensor signal is temporarily interrupted.
When the clutch pedal is depressed for approximately 8 seconds.