Shock Sensor: Description and Operation

Purpose
Glass breakage sensors (wire loops) (B39, B39/1) vapor-coated onto the rear side windows and rear window or the rear window defroster element (R1) are used for securing the rear side windows and rear window.

Function
The glass breakage sensors (wire loops) (B39, B39/1) and the wire for the rear window defroster (R1) are interrupted when one of the windows is broken tripping the alarm via the associated transmitter and receiver.

Glass breakage R > 26 Ohms

Location Of Components:

Breaking one of the windows interrupts the glass breakage sensor circuits (wire loops) tripping the alarm via the associated transmitter and receiver unit. The rear right window glass breakage sensor (B39/1) as well as the rear window defroster element (R1) are connected in series with the right infrared transmitter and receiver (interior protection system) (A26/5).

The left rear window glass breakage sensor is connected to the left infrared transmitter and receiver module (IR) (interior protection system).

The rear window defroster element (R1) (wire loop) is interrupted when the window is broken tripping the alarm via the right infrared transmitter and receiver (interior protection system) (A26/5).

The rear window defroster element (R1) is connected in series with the right rear window glass breakage sensor (B39/1) and with the right infrared transmitter and receiver (interior protection system) (A26/5).