BM
BMW
BMWBMW
Z3
3234.0Ća
2001
Pin Assignments
01/01
E = Input, A = Output, M = Ground
X74
Pin Type Description/Function Connection
1 A Pyrotechnical belt tensioner (+) Driver’s side pyrotechnical belt tensioner
2 A Pyrotechnical belt tensioner (–) Driver’s side pyrotechnical belt tensioner
3 A Pyrotechnical belt tensioner (+) Passenger’s side pyrotechnical belt
tensioner
4 A Pyrotechnical belt tensioner (–) Passenger’s side pyrotechnical belt
tensioner
5 E Power supply Front power distribution box, fuse 41
6 M Ground Ground point
7 A Air bag warning indicator Instrument cluster
8 E Belt switch Passenger’s seat belt switch
9 E/A TxD diagnostic data line Data link connector
10 A Air bag (+) Driver’s air bag gas generator
11 A Air bag (–) Driver’s air bag gas generator
12 E Belt switch Driver’s seat belt switch
13 A Air bag (+) Passenger’s air bag gas generator
14 A Air bag (–) Passenger’s air bag gas generator
15 E Seat occupancy detector Seat occupancy detector
16 A Gas generator Gas generator, left side air bag
17 A Gas generator Gas generator, left side air bag
18 A Gas generator Gas generator, right side air bag
19 A Gas generator Gas generator, right side air bag
20 E Impact sensor Driver’s side impact sensor
21 E Impact sensor Passenger’s side impact sensor
22 Not used
23 Not used
24 Not used
25 Not used
26 A Air bag II (+) Driver’s air bag gas generator
27 A Air bag II (–) Driver’s air bag gas generator
28 Not used
29 Not used
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