9000 Aero L4-2290cc 2.3L DOHC Turbo EFI HO (1997)
Glass Breakage Sensor: Description and Operation
The sensor senses sound (microphone), such as a window being broken. It is integrated with the interior lighting lamp in the roof and connected to the
control module as follows:
-
Anti-theft alarm, via pin 7/signal and pin 5/ground.
-
Anti-theft alarm with VSS via pin 7/signal and pin 13/ground.
The separate ground input for the sensor in the anti-theft alarm version without VSS has a filtering effect to avoid differences in potential between the
electronic control module's main ground and the sensor's ground input.
If a window is broken while the anti-theft alarm is armed, the sensor sends an analogue signal to the electronic control module so that the alarm will be
set off. The sensor also has a button for manual disconnection of the glass breakage sensor. When this button is pressed, the electronic control module
senses a change in the signal level and the sensor is disconnected.
