System Description

SONAR SYSTEM

System Description

- The sonar sensor installed to the rear bumper detects obstacles around the rear bumper.
- When the rear corner sensor or the rear center sensor detects an obstacle during rear view monitor indication, the buzzer built in the sonar control unit sounds and the location of the obstacle is indicated on the display unit by displaying an icon.
- Sonar system turns ON/OFF with the sonar cancel switch.
- The sonar control unit is connected to the AV control unit via the AV communication.
- The sonar control unit is connected to the diagnosis connector via K-Line and allows diagnoses with CONSULT.
- The sonar sensor installed to the rear bumper detects obstacles around the rear bumper.
- When the rear corner sensor or the rear center sensor detects an obstacle during rear view monitor indication, the buzzer sounds via each speaker and the location of the obstacle is indicated on the display unit by displaying an icon.
- Sonar system turns ON/OFF with the sonar cancel switch.
- The sonar control unit is connected to the AV control unit via the AV communication.
- Sonar control unit is connected to the diagnosis connector via K-Line and allows diagnoses with CONSULT.

Warning by Buzzer (Without Navigation)

- The cycle of buzzer changes according to the distance from an obstacle: the center sensor, in four levels;
the corner sensor, in three levels.
- Each sonar sensor transmits a sensor signal to the sonar control unit when detecting an obstacle.
- When receiving a sensor signal, the buzzer built in the sonar control unit sounds if an obstacle is detected on the rear side of the vehicle.

Warning by Buzzer (With Navigation)

- The cycle of buzzer changes according to the distance from an obstacle: the center sensor, in four levels;
the corner sensor, in three levels.
- Each sonar sensor transmits a sensor signal to the sonar control unit when detecting an obstacle.
- The sonar control unit converts a signal received from each sonar sensor into a distance signal (center sensor: four levels, corner sensor: three levels) and transmits it to the AV control unit via AV communication.
- The AV control unit transmits a sound signal (buzzer) to the BOSE amp. when receiving a distance signal from the sonar control unit.
- When receiving a sound signal (buzzer), the BOSE amp. transmits the sound signal (buzzer) to each speaker.
- When each speaker receives a sound signal (buzzer), buzzer sounds.
- When the rear center sensor or the rear corner sensor detects an obstacle, a buzzer is heard from the speakers on the rear side.

Warning by Indicator

- Detecting an obstacle when in reverse gear, the direction and the distance to the obstacle are displayed on the rear view monitor with icons.
- The color and the number of blinks of the sonar indicator changes, according to the distance to an obstacle (during icon indication).
- The sonar display function can be turned ON/OFF from "SETTING" of "Other". In this case, buzzer sounds by turning OFF the display function.
- Each sonar sensor transmits a sensor signal to the sonar control unit when detecting an obstacle.
- The sonar control unit converts a signal received from each sonar sensor into a distance signal (center sensor: four levels, corner sensor: three levels) and transmits it to the AV control unit via AV communication.
- The AV control unit transmits an RGB image signal to the display unit, based on the received signal. (Without navigation)
- The AV control unit transmits an RGB digital image signal to the display unit, based on the received signal.
(With navigation)
- When receiving an RGB image signal, the display unit indicates "Icon display." (Without navigation)
- When receiving an RGB digital image signal, the display unit indicates "Icon display." (With navigation)
- Warning indications of the sonar system on the display are generated by the AV control unit.






ACTIVATION CONDITION

The rear sensor activates under the following conditions:
- Sonar cancel switch OFF
- Reverse position
- During obstacle detection x: applicable






OBSTACLE DETECTION DISTANCE

- The sonar control unit controls the obstacle detection distance. The detection distance differs between the corner sensor and the center sensor.
- The sonar control unit controls a warning buzzer cycle which changes in 4 levels (for center) or in 3 levels (for corner), according to the detection distance.
- The detection condition setting is adjustable in 4 levels with CONSULT. Refer to "CONSULT Function" Scan Tool Testing and Procedures.
- CONSULT enables the center sensor (rear) not to detect the range of 40 cm (15.75 in) or less to prevent from the trailer hitch vehicle detection error. Refer to "CONSULT Function" Scan Tool Testing and Procedures.










Detection distance (default value)





Warning Buzzer Frequency
- The warning buzzer cycle changes between 4 levels (for rear center) and 3 levels (for rear corner), according to the detection distance.
- The nearest sensor from the detected obstacle determines the buzzer cycle if plural sensors simultaneously detect obstacles.





NOTE:
The warning buzzer of the corner sensor sounds as follows:
- As for the second and third stages, the warning buzzer sounds for 3 seconds at maximum.
- As for the fourth stage, the warning buzzer does not stop even after a lapse of 3 seconds.
- Buzzer stops when the vehicle moves away from an obstacle and the warning level decreases.