9-5 Aero (9600) L4-2.3L Turbo (B235) HO (2000)
Shock Sensor: Description and Operation
Glass Breakage Sensor (4D)
Glass Breakage Sensor
General
The glass breakage sensor detects sound (microphone type) and detects whether a car window has been broken. It is integrated into the rear roof light
and connected to the following pins of the TWICE control module:
Voltage +12V
pin no.10
Ground
pin no.57
Signal
pin no.58
Function
When the anti-theft alarm is armed, the glass breakage sensor is activated when it receives a power supply +12V from the control module to pin 3.
If a window is broken, the sensor detects the sound, processes the information and decides whether or not to trip the alarm. If the alarm is to be tripped,