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Functional networking

The following graphic illustrates the functional networking for the airbag system, using the example of F30.

Fig 1: Crash Safety Module - Circuit Diagram
G09872367Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Airbag front sensor, left (US version)
2 Front electronic module (FEM) with installed central gateway module (ZGM)
3 Crash Safety Module (ACSM)
4 Instrument panel (KOMBI)
5 Switch for front passenger airbag deactivation (European version)
6 Airbag front sensor, right (US version)
7 Airbag sensor, right-hand front door (US version and depending on model)
8 Head airbag, right (depending on equipment)
9 Airbag sensor, right B-pillar
10 Reversible electromotive automatic reel, right (REMABF), (model-specific)
11 Adaptive belt force limiter, front right (US version, depending on equipment)
12 Reel tensioner for front passenger seat belt (US version)
13 Safety battery terminal
14 Seat belt buckle contact, rear passenger's side (European version, model-specific)
15 Front passenger seat occupancy detector (US version)
16 Front passenger seat occupancy detector (Europe version)
17 Seat position sensor, front passenger (US version)
18 Seat belt buckle switch for front passenger seat belt
19 Belt tensioner for front passenger seat belt
20 Front side airbag, passenger's side
21 Crash-active headrest, front passenger seat
22 Front passenger airbag (European version)
23 Front passenger airbag with pyrotechnically activated discharge hole (US version)
24 Knee airbag for front passenger (US version)
25 Indicator lamp for front passenger airbag deactivation
26 Front fuse and relay module
27 Rollover protection, right (model-specific)
28 Seat belt buckle contact (model-specific)
29 Rollover protection, left (model-specific)
30 Integrated chassis management (ICM)
31 Knee airbag for driver (model-specific)
32 Driver's airbag with pyrotechnically activated discharge hole (US version)
33 Driver's airbag (European version)
34 Crash-active headrest, driver's seat
35 Front side airbag, driver's side
36 Belt tensioner for driver's seat belt
37 Belt buckle switch for driver belt
38 Seat position sensor, driver (US version)
39 Seat belt buckle contact, driver's side, rear (European version)
40 Reel tensioner for driver's seat belt (US version)
41 Adaptive belt force limiter, front left (US version)
42 Combox (CBX-MEDIA or CBX-ECALL)
43 Reversible electromotive automatic reel, left (REMAFA) (model-specific)
44 Airbag sensor, left B-pillar
45 Head airbag, left
46 Airbag sensor, front door, left (US version)
LIN LIN bus (Local Interconnect Network bus)
PT-CAN Drive train CAN