Circuit/System Description

The ultrasonic intrusion sensor is used to determine if someone has gain unauthorized access to the vehicle while the content theft deterrent system is armed by detecting any movement within the vehicle interior. The ultrasonic intrusion sensor also senses the vehicle angle while the content theft deterrent system to monitor for tow-away vehicle theft.

B+ and ground are applied at all time to the ultrasonic intrusion sensor. The ultrasonic intrusion sensor communicates with the body control module via serial data. The theft deterrent sensor disable switch is used to enable and disable ultrasonic intrusion sensor. The ultrasonic intrusion sensor monitors the theft deterrent sensor disable switch signal circuit. When the switch is pressed, the signal circuit is pulled low and the ultrasonic intrusion sensor is enabled or disabled. The ultrasonic intrusion sensor applies voltage to the theft deterrent sensor disable switch indicator control circuit to illuminate the theft deterrent sensor disable switch indicator.