9-5 SE Wagon (9600) V6-3.0L Turbo (B308) (2001)
The door switches which control the interior lighting are also the sensors for the doors in the alarm system. The four switches are mounted in the frame
for the door concerned and are activated when the door is opened or closed.
The door switches are connected to TWICE on the following pins:
Driver's door
pin no.61
Passenger door
pin no.60
Rear door, left
pin no 12
Rear door, right
pin no.36
Function
A pulse width-modulated (approx. 3.5%) voltage is supplied continuously from the control module via a 1 Kohm pull-up in TWICE to the switch
concerned. From this voltage, the control module can detect whether a door is opened when the alarm is armed by testing the voltage at the input
concerned.