Door, Luggage Compartment and Engine Hood Switches

Door, Luggage Compartment Switches
The switches (for interior lighting) are used by the theft alarm as sensors for the 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 theft alarm control module pin 4 and the luggage compartment switch to pin 3 via the car's cable assembly. The control module thus senses if a door is opened while the alarm is armed by checking the voltage over the switch in the following way:
- When the door/tailgate is closed, the voltage between the switch and ground should be 12 V.
- 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 in the engine compartment in the front edge on the left-hand side and acts as a sensor for the engine hood. The switch is connected to the control module (pin 16).
- When the engine hood is closed, the voltage between the switch and ground should be 12 V.
- When the hood is opened, the switch is grounded. The voltage between the switch and ground is thus 0 V. The alarm is set off.