Ultrasonic Sensor: Description and Operation

ULTRASONIC INTRUSION SENSOR

Fig.3 VTSS Intrusion Sensor:

Some vehicles equipped with the premium Vehicle Theft Security System (VTSS) use a ultrasonic intrusion sensor. This intrusion sensor is integrated into the dome lamp and detects any movement in the cabin when the VTSS system and the intrusion sensor are armed The sensor cannot be serviced separately and if found to be faulty the entire dome lamp assembly must be replaced

In the event the intrusion sensor detects movement inside the vehicle's interior (with system armed), the ARKEM module will sound the siren.

DISARMING THE INTRUSION SENSOR
- Press the "LOCK" button on Remote Keyless Entry transmitter THREE times within five (5) seconds This operation must be performed during the first 16 seconds of VTSS system arming
- Rotating the drivers door key cylinder THREE times within five (5) seconds This operation must be performed during the first 16 seconds of VTSS system arming