Dynamic Radar Cruise Control System
System OutlineThe radar cruise control system allows you to drive at a selected cruising speed, maintaining an appropriate vehicle-to-vehicle distance using the laser radar sensor, the steering sensor and the yaw rate sensor. The laser radar sensor detects the reflection of the vehicle ahead in your lane.
1. Setting Operation
While the ON-OFF SW is ON (The power indicator light is turned on), bring the vehicle to the desired speed, press the control lever downward in the "- SET" direction and release it. This sets the vehicle at that speed from the lower limit of the preset speed about 45 km/h (28 mph) to the upper limit of the preset speed about 135 km/h (85 mph). However, the vehicle speed is faster than 135 km/h (85 mph), the preset speed is the upper limit of the preset speed.
While the ON-OFF SW is ON (The power indicator light is turned on), bring the vehicle to the desired speed, press the control lever downward in the "- SET" direction and release it. This sets the vehicle at that speed. It is possible to set at that speed between lower speed limit and higher speed limit.
2. Resetting to a Speed
1. Resetting to a lower speed The set speed can be decreased 5 mph (For USA) or 5 km/h (For Canada) each time by pressing the control lever downward in the "- SET" direction quickly within 0.5 seconds.
And while the cruise control is on and the control lever is held downward in the "- SET" direction, the preset speed will decrease every 5 mph (For USA) or 5 km/h (For Canada). But you cannot decrease lower than the lower limit of the preset speed about 27 mph (For USA) or 43 km/h (For Canada). If the preset speed is changed, the vehicle speed will be gradually decreased to the preset speed. (In the other case, perhaps the vehicle speed will be increase.)
2. Resetting to a faster speed
- The set speed can be increased 5 mph (For USA) or 5 km/h (For Canada) each time by pressing the control lever upward in the "+ RES" direction quickly within 0.5 seconds.
And while the cruise control is on and the control lever is held upward in the "+ RES" direction, the preset speed will increase every 5 mph (For USA) or 5 km/h (For Canada). But you cannot increase faster than the upper limit of the preset speed. If the preset speed is changed, the vehicle speed will be constantly increased to the preset speed. (In the other case, perhaps the vehicle speed will be decrease.)
- When your vehicle follow up cruise function, if press the control lever upward in the "+ RES" direction, the vehicle speed will not be increased and the preset speed will be changed only.
1. Deceleration
- While the cruise control is on and the control lever is held downward in the "- SET" direction, the vehicle speed will gradually decrease. When you release it, this sets the vehicle speed at that speed. If the control lever is released when the vehicle speed exceeds the upper limit of the preset speed traveling downhill while you are pressing the control lever downward, the system will memorize the upper limit of the preset speed as a preset speed.
- When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can be decreased 1.6 km/h (1 mph) each time by pressing the control lever downward in the "- SET" direction quickly within 0.5 seconds. But if the control lever is released when the difference between the actual vehicle speed an the set speed is more than 5 km/h (3 mph), this sets the vehicle speed at that speed.
2. Acceleration
- While the cruise control is on and the control lever is held upward in the "+ RES" direction, the vehicle speed will constantly increase. When you release it, this sets the vehicle speed at that speed. If the vehicle speed exceeds the upper limit of the preset speed while you are pressing the control lever downward, the system will cruise at the upper limit of the preset speed. And if the control lever is released, this sets the vehicle speed at that speed.
- When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can be increased 1.6 km/h (1 mph) each time by pressing the control lever upward in the "+ RES" direction quickly within 0.5 seconds. But if the control lever is released when the difference between the actual vehicle speed and the set speed is more than 5 km/h (3 mph), this sets the vehicle speed at that speed.
- If you are pressing the control lever downward and released when the vehicle speed is increased by pressing the acceleration pedal, the system will memorize the preset speed at that speed. But if you operate the control lever downward at the upper limit of the set speed, you cannot set the preset speed.
3. The Lower Limit of the Preset Speed
- This is the lower limit of the preset speed of the followings. This is a difference of the lower limit of the canceled speed.
- For USA : about 27 mph
- For Canada : about 43 km/h
- When the vehicle speed is less than the lower limit of the preset speed, you cannot change the preset speed.
4. The Lower Limit of the Canceled Speed
- This is the lower limit of the canceled speed about 40 km/h (25 mph). And if the vehicle speed falls below about 40 km/h (25 mph), the preset speed will be automatically cancelled. In the vehicle-to-vehicle distance control mode the preset speed will be stored, and in the conventional cruise control mode the preset speed will not be stored.
5. The Upper Limit of the Preset Speed
This is the upper limit of the preset speed of the followings.
- For USA : about 85 mph
- For Canada : about 139 km/h
6. The Upper Limit of the Possible Speed to Use the Cruise Control (Only for the Conventional Cruise Control Mode). This is the upper limit of the possible speed to use the cruise control.
- For USA : about 125 mph
- For Canada : about 200 km/h
7. Resuming the Preset Speed
- If the preset speed has been canceled, when you push the lever up in the "+ RES" direction while "RADAR READY" shows up on the instrument cluster and at a vehicle speed of about more than the lower limit of the canceled speed, the speed set prior to cancellation will be restored.
However, once the vehicle speed falls below about 40 km/h (25 mph), the preset speed will not be resumed at the conventional cruise control mode.
- During follow-up cruising, if there are no vehicles running ahead because they have changed lanes, your vehicle will accelerate gradually up to the preset speed. At this time, pushing the control lever upward in the "+ RES" direction will quickly speed up your vehicle in the vehicle-to-vehicle distance control mode.
8. Shift Down Control
While the cruise control is on, there is a possible case of the cancelled over drive on a climbing hill. If the system judge the end of a climbing hill after the cancelled over drive, the vehicle will return the over drive mode after the returned over drive timer.
9. Canceling the Preset Speed
If the following signals is put in the micro computer when the cruise control is on, this system will be cancel. (The preset speed has been stored.)
A. Depressing the brake pedal. (Input the stop light switch signal)
B. Turn the "D" position circuit in neutral start switch on and then off.
When the transmission is changed from "D" or "N", cancel the preset speed.
At transmission "S", when the transmission is changed from "5" or "4" to "N", "3", "2" and "1", cancel the preset speed.
C. Pulling the control lever in the "CANCEL" direction.
D. The ON-OFF SW is OFF. (In this case, the set speed is not stored.)
E. VSC system is activated.
10. Automatically Cancel
1. If any of the following conditions then occurs, the preset speed automatically cancels out and the cruise control system will be canceled. And then, the "CRUISE" indicator light in the instrument cluster flashes until the ON-OFF SW will be turned off, the master warning light comes on and the warning tone sounds, and the warning code will appear on the display. The system cannot be entered until the ON-OFF SW will be turned on again.
A. The vehicle speed sensor is malfunction.
B. The parts of the electronic throttle are malfunction.
C. The stop light switch circuits is open or short.
2. If any of the following conditions then occurs, the preset speed automatically cancels out and the cruise control system will be canceled. And then, the "CRUISE" indicator light in the instrument cluster flashes until the ON-OFF SW will be turned off, the master warning light comes on and the warning tone sounds, and the warning code will appear on the display. The system cannot be entered until the ON-OFF SW will be turned on again.
A. The laser radar sensor is malfunction.
B. Improper aiming of laser radar sensor beam axis.
C. The radar cruise control system is malfunction except above A), B).
3. If any of the following conditions then occurs, the preset speed automatically cancels out and the cruise control system will be canceled. And then, the "CRUISE" indicator light in the instrument cluster flashes until the ON-OFF SW will be turned off, the master warning light comes on and the warning tone sounds, and the warning code will appear on the display. The system cannot be entered until it will be back the normal condition from above A)-E) (It is possible to resume.) and the ON-OFF SW will be turned on again.
A. The laser radar sensor is dirtied.
B. The wipers are operated at high or low speeds (Including high and low speed operations with the wiper lever in the "AUTO" position.)
C. The driving pattern selector switch is set to "SNOW" mode.
D. Direct the strong light of sunlight, etc. from the front.
E. It is determined that it is difficult to make a measurement because of bad weather (Such as rainy, foggy, or snowy weather).
4. If any of the following conditions then occurs, the preset speed will be automatically cancelled out.
However, at the vehicle-to-vehicle distance control mode the preset speed will be stored.
A. The vehicle speed falls below about 40 km/h (25 mph).
B. The vehicle speed drops 16 km/h (10 mph) below preset speed. (Only for the conventional cruise control mode)
11. Changing the Radar Cruise Control Mode
When you push the ON-OFF SW, the vehicle-to-vehicle distance mode is activated. To change to the conventional (Fixed speed) cruise control mode, push the lever in the "MODE" direction for longer than about 1 second.
However, once the vehicle-to-vehicle distance mode activates and is used, it cannot be changed to the conventional cruise control mode using the above operation.
To change the mode, turn the ON-OFF SW off and then on. Next push the lever in the "MODE" direction for longer than about 1 second.
If the system malfunction then occurs, turn the engine off and then it on again. Next above operation will be changed to it.