QX56 V8-5.6L (VK56DE) (2004)
Collision Avoidance Sensor: Description and Operation
REAR SONAR SENSOR
With power and ground supplied to the rear sonar sensors, the sonar sensors transmit a 38.4 kHz ultrasonic signal. This signal is reflected back to the
sensor by objects large enough and close enough to be detected. The rear sonar sensors measure the time from the transmitted signal to the time the
signal is reflected back and sends this information to the sonar control unit.
Power is supplied
-
to each rear sonar sensor terminal 1
-
from sonar control unit terminal 16.
Ground is supplied
-
to each rear sonar sensor terminal 3
-
from sonar control unit terminal 15.
Signal is supplied
-
to sonar control unit terminals 9, 10, 11 and 12.
-
from each rear sonar sensor terminal