### System Outline

The cruise control system is a constant vehicle speed controller in which control of the switch on the instrument panel makes it possible to automatically adjust the opening of the engine throttle valve without depressing of the accel pedal.

1.Set Operation

When the ONOFF SW is turned on, the system starts preparations necessary for the cruise control and turns on the indicator light in the combination meter.

2.Set Speed Control

When the SET/COAST SW is operated with the cruise control main SW (ONOFF SW) turned on during travelling, the constant vehicle speed is controlled.

3.Coast Control

When the SET/COAST SW is kept turned on during cruise control travelling, the engine ECU controls the throttle valve to decelerate the vehicle. Every time the SET/COAST SW is turned on instantaneously, the vehicle speed is decelerated approximately 1.6 km/h.

4.Accel Control

When the RESUME/ACCEL SW is kept turned on during cruise control travelling, the engine ECU controls the throttle valve to accelerate the vehicle. Every time the RESUME/ACCEL SW is turned on instantaneously, the vehicle speed is accelerated approximately 1.6 km/h.

5.Resume Control

When the vehicle speed is within the low speed limit (Approximately 40 km/h, 25 mph) if the cruise control is cancelled, use of the RESUME/ACCEL SW accelerates the vehicle to the speed level used before canceling the cruise control.

6.Manual Cancel Mechanism

If any of the following signals is input during cruise control travelling, the cruise control is cancelled.

*The stop light SW is turned on.

*The CANCEL SW is turned on.

*The ONOFF SW is turned off.

7.Auto Cancel Function

If any of the following conditions is encountered, the cruise control is automatically cancelled.

*The stop light SW wiring is faulty or shortcircuited.

*The vehicle speed signal is faulty.

*The electronically controlled throttle malfunctions.

8.Overdrive Control Function

Overdrive is sometimes cut off on gradients during cruise control driving. When end of climbing gradient is determined by throttle opening degree information after overdrive is canceled, control is reset to overdrive condition after overdrive resetting timer operation. Also, when overdrive is cut off during accelerator control or resuming control, control is reset to overdrive condition when accelerator control or resuming control is finished.