900 S Sedan V6-2498cc 2.5L DOHC (1995)
The switches (for interior lighting) are included in the theft alarm as sensors for doors and tailgate. The switches are mounted in the body, in the middle
of each door and the tailgate. All door switches are connected to the alarm control module (pin 4) via the car's ICE control module. The luggage
compartment switch is connected directly via the car cable assembly to pin 3 on the alarm control module. The control module then senses if a door is
opened when the alarm is armed by monitoring the voltage over the switch as follows:
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When the door/tailgate is closed, the voltage between the switch and ground should be 12 V.
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The switch is grounded when the door/tailgate is opened. The voltage between the switch and ground is then 0 V. The alarm is set off.
Engine hood switch
The engine hood switch is located beside the electrical distribution box in the engine compartment and is included as a sensor for the hood. The switch is
connected to the control module (pin 16).
