9-3 (9440) V6-2.8L Turbo (2008)
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Type
Glass breakage loop
Connection
The glass breakage loops for the rear side windows (765RL/RR) and the rear window (765RC) are connected in series from BCM pin A31 to the rear left
side window glass breakage loop (765RL) and then to the rear window glass breakage loop (765RC), which is connected to the rear right side window
glass breakage loop (765RR). The glass breakage loop for the right side window (765RR) is connected to grounding point G34S via crimp J108.
The input for the glass breakage loop in BCM is an A/D converter with pull up resistor (1.2 kohm) to 10 V. The PWM voltage pulses have a length of 3
msand frequency 2 pulses per second. As long as the loops are intact, the voltage on the input is close to 0 V but rises to almost 10 V if they are broken.
