BMW 5 Series: Alarm System

System wiring diagram

Alarm system

1. Engine compartment lid contact switch
2. Fuse for front right power distribution box
3. Body Domain Controller (BDC)
4. Door contact, front passenger's side, front
5. CAN terminator
6. Door contact on front passenger's side, rear
7. Fuse for rear right power distribution box
8. Siren with tilt alarm sensor
9. trunk contact switch in the trunk lock
10. Door contact on driver's side, rear
11. Roof function center (FZD)
12. LED in the interior mirror
13. Door contact, driver's side, front

The alarm system in the G30 is equipped with an ultrasonic interior movement detector for monitoring the passenger compartment. The ultrasonic interior movement detector (USIS) is fully integrated in the roof function center (FZD).

The door contacts, engine compartment lid contact switch and the opening of the trunk are monitored by the Body Domain Controller. As soon as a status changes, the ultrasonic interior movement detector receives this information via the K-CAN2. If the alarm system is activated, the siren with tilt alarm sensor is activated by the control unit in the event of a break-in.

The SINE is connected to the FZD via a local interconnect network bus.

The status of the alarm system is displayed via the LED at the interior mirror.

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