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Home >> BMW >> 2006 >> 330i Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Entertainment And Communication - Overview >> E90 Entertainment and Communication >> Telephone >> System Circuit Diagram

System Circuit Diagram

Fig 1: System Circuit Diagram
G03393775Courtesy of BMW OF NORTH AMERICA, INC.
LEGEND FOR SYSTEM CIRCUIT DIAGRAM

Index Explanation Index Explanation
1 RAD2 13 Telematic control unit
2 Multiple restraint system 5 14 SOS antenna
3 Instrument cluster 15 Telephone aerial (TCU)
4 Junction box control unit 16 Roof function module (driver's-side microphone, emergency-call button with emergency-call indicator lamp)
5 Dynamic stability control 17 SOS speaker
6 Wheel speed sensor, left 18 Base plate
7 Wheel speed sensor, right 19 Snap-in adapter with mobile phone
8 Steering column switch cluster 20 Telephone aerial (mobile phone)
9 GPS antenna 21 Line compensator (optional)
10 Audio speaker 22 Bluetooth antenna
11 Audio amplifier 23 Car access system 2
12 MOST components (optional) MOST Media Orientated System Transport
13 Vehicle wake-up signal FS Service port MOST bus loop
DFA_VL Wheel speed signal, front left DFA_VR Wheel speed signal, front right
Mic+ Microphone, positive Mic- Microphone, negative
SOS LED Emergency-call indicator lamp SOS Emergency call signal
Cradle On ON signal for the charger electronics in the snap-in adapter Cradle Key Call accept/transfer/pairing button
Tel_On Telephone ON signal for compensator