System Outline

System Outline

Cruise control is the speed control device, which can set desired speed by just operating the switch on the control panel without applying the accelerator pedal. The device can be used when driver would like to drive the vehicle at fixed speed.

1. Set Control
If the cruise control switch is pushed to - SET side and hand is released from the switch during driving, (The available range of set speed: between 40 and 200 km/h) with the ON-OFF switch at ON (Power indicator comes on), the device stores vehicle speed at that time and controls it constantly at the set speed.

2. Set Speed Control
The device compares the actual vehicle speed with the set speed, and controls the driving power of the motor and the engine by calculating the cruise control requirements to drive it constantly at the set speed.

3. Coast Control
If the cruise control switch is kept pushed to the - SET side during driving in the cruise control mode, the device recognizes the cruise control requirement is at zero and decelerates the vehicle speed. When hand is released from the cruise control switch, the device stores the vehicle speed while the vehicle speed is decelerating. From then on, vehicle speed is controlled to stay at that speed.
Every time the switch is operated to - SET side momentarily (For about 0.5 seconds), the set speed is decreased by about 1.6 km/h. However, in case of tap-down operation to make more than 5 km/h gap between the set speed and the actual vehicle speed, the device recalls the original set speed and controls it at the speed constantly.

4. Accel Control
If the cruise control switch is kept pushed to the + RES side during driving in the cruise control mode, the device recognizes the cruise control is on the acceleration side and accelerates the vehicle speed. When hand is released from the cruise control switch, the device stores the vehicle speed at that time and controls it with the set speed constantly.
Every time the switch is operated to + RES side momentarily (For about 0.5 seconds), the set speed is increased by about 1.6 km/h. However, in case of tap-up operation to make more than 5 km/h gap between the set speed and the actual vehicle speed, the device does not change the set speed. (Tap-up operation is not available.)

5. Resume Control
After the cruise control mode is cancelled by any one the cancel switches, the mode can be resumed and controlled at the set speed by operating the cruise control switch in the + RES direction providing that the vehicle speed has not dropped below the low speed limit [Approx. 40 km/h (25 mph)].
The mode cannot be resumed if the vehicle speed once drops below the low speed limit, because the speed in the memory is cleared.

6. Manual Cancel Control
If any of the following signals is sent to the device while the vehicle is running in the cruise control, the cruise control is cancelled accordingly.
- Stop light switch: ON (Depressing the brake pedal)
- CANCEL switch of control switch: ON
- ON-OFF switch: OFF

7. Auto Cancel Function

A. The set speed is cleared and the cruise control is canceled under the following conditions. The cruise main indicator blinks until the main switch is turned OFF. The speed control is unavailable unless the main switch is turned ON again
- When the stop light switch open or short-circuits.
- When signal of sudden change in the vehicle speed is sent.

B. The set speed is cleared and the cruise control is canceled under the following conditions.
- When there is malfunction of the stop light switch input circuit.
- When the vehicle speed becomes lower than 40 km/h.
- When the vehicle speed becomes lower than the speed that 16 km/h is subtracted from the set speed.