BMW 7 Owners & Service Manuals

BMW 7 Series: System Overview

GENERAL INFORMATION

The system overview of the F01/F02 audio system begins with a general bus overview. It shows the interconnection of all IKT components in the bus system network.

A block diagram of the Car Information Computer is also provided.

Particular reference is made to the individual levels within the CIC head unit:

  • User interface
  • Application software
  • Hardware components

Detailed information can be found in the following pages on the individual circuit diagrams:

  • CIC Head unit circuit diagram
  • HiFi speaker system circuit diagram
  • TOP-HiFi speaker system circuit diagram
  • Antenna system circuit diagram
  • USB/audio interface circuit diagram
  • Smartphone Integration circuit diagram
  • DVD changer circuit diagram

NOTE: The Top HiFi System refers to the Premium-HiFi System.

F01/F02 Audio/Bus System Overview

Audio Systems
Fig. 48: Overview Of F01/F02 Audio/Bus System

INDEX REFERENCE CHART

CAS - Car Access System
CIC - Car Information Computer
CID - Central information display
CON - Controller
DVD - DVD changer
FD - Rear-seat display
FD2 - Rear seat area display 2
HiFi - HiFi amplifier
HKA - Automatic A/C, rear seat compartment
HUD - Head-Up Display
IHKA - Automatic climate control
KOMBI - Instrument cluster
OBD - Diagnosis socket
RSE - Rear Seat Entertainment
SDARS - Satellite tuner
TCU - Telematics control unit
TOP HIFI - Top-HiFi system
SBX High - ULF Interface box "High" (Bluetooth telephone, voice input and USB audio interface)
VSW - Video switch
ZGM - Central gateway module

Key to abbreviations - bus overview

ABBREVIATIONS REFERENCE CHART

D-CAN - Diagnosis CAN
K-CAN - Body CAN
K-CAN 2 - Fast body CAN
MOST - Media Orientated System Transport
PT-CAN - Powertrain CAN
PT-CAN 2 - Powertrain CAN 2

Block Diagram of Head Unit CIC

Audio Systems
Fig. 49: Block Diagram Of Head Unit CIC

INDEX REFERENCE CHART

  1. Central Information Display (CID)
  2. Car Information Computer
  3. User interface application
  4. Application software
  5. Hardware and interfaces

CIC Head Unit Circuit Diagram

Audio Systems
Fig. 50: CIC Head Unit Circuit Diagram

INDEX REFERENCE CHART

  1. Central gateway module
  2. Diagnosis interface
  3. Dynamic stability control
  4. Central information display
  5. Junction box electronics module with power distribution box
  6. Car Information Computer
  7. USB port in glove compartment
  8. Automatic climate control
  9. AUX-In connection in center console (jack plug)
  10. Controller
  11. Roof antenna
  12. Antenna amplifier with diversity
  13. Rear power distribution box
  14. SDARS satellite radio tuner
  15. Steering column switch cluster
  16. Instrument cluster

LVDS - Low voltage differential signalling
MOST - Media Orientated System Transport
USB - Universal serial bus
FlexRay - FlexRay bus system
K-CAN - Body CAN

K-CAN signals at the CIC control unit, that are not defined in the system circuit diagram:

K-CAN SIGNAL FUNCTIONAL CHART

Audio Systems

MOST signals at the CIC control unit, that are not defined in the system circuit diagram:

MOST SIGNALS FUNCTIONAL CHART

Audio Systems

Audio Systems

HiFi Speaker System Circuit Diagram

Audio Systems
Fig. 51: HiFi Speaker System Circuit Diagram

INDEX REFERENCE CHART

  1. Central gateway module
  2. Mid-range speaker, front center
  3. Tweeter, front center
  4. Car Information Computer
  5. Tweeter, front right door
  6. Mid-range speaker, front right door
  7. Woofer, under right front seat
  8. Mid-range speaker, rear window shelf, right
  9. Tweeter, rear window shelf, right
  10. Rear power distribution box
  11. HiFi amplifier
  12. Tweeter, rear window shelf, left
  13. Mid-range speaker, rear window shelf, left
  14. Woofer, under left front seat
  15. Mid-range speaker, front left door
  16. Tweeter, front left door

K-CAN - Body CAN

TOP-HiFi Speaker System Circuit Diagram

Audio Systems
Fig. 52: TOP-HiFi Speaker System Circuit Diagram

INDEX REFERENCE CHART

  1. Car Information Computer
  2. Tweeter, front center
  3. Mid-range speaker, front center
  4. Tweeter, front right door
  5. Mid-range speaker, front right door
  6. Woofer, under right front seat
  7. Mid-range speaker, rear right door
  8. Tweeter, rear right door
  9. Tweeter, rear window shelf, right
  10. Mid-range speaker, rear window shelf, right
  11. Rear power distribution box
  12. Axial-flow fan, TOP-HiFi amplifier
  13. Top-HiFi amplifier
  14. Mid-range speaker, rear window shelf, left
  15. Tweeter, rear window shelf, left
  16. Tweeter, rear left door
  17. Mid-range speaker, rear left door
  18. Woofer, under left front seat
  19. Mid-range speaker, front left door
  20. Tweeter, front left door

MOST - Media Orientated System Transport

Antenna System Circuit Diagram

Audio Systems
Fig. 53: Antenna System Circuit Diagram

INDEX REFERENCE CHART

  1. Central gateway module
  2. Footwell module
  3. Car Access System
  4. Automatic climate control
  5. Car Information Computer
  6. Junction box electronics
  7. Base plate of universal charging and hands-free (Not for US)
  8. Bluetooth antenna
  9. Roof antenna
  10. Interference suppressor filter, rear brake light
  11. Rear brake light
  12. Antenna diversity
  13. Rejector circuit, rear window defogger_1
  14. Rear window with individual FM/AM antenna
  15. Rejector circuit, rear window defogger_2
  16. Rear power distribution box
  17. Rejector circuit, rear window defogger for AM range
  18. Emergency call antenna (backup)
  19. Telematics control unit
  20. SDARS satellite tuner

K-CAN - Body CAN
K-CAN 2 Fast body CAN
LIN - Local Interconnect Network

USB/audio Interface Option Circuit Diagram

Audio Systems
Fig. 54: USB/Audio Interface Option Circuit Diagram

INDEX REFERENCE CHART

  1. Central gateway module
  2. Instrument cluster
  3. Steering column switch cluster
  4. Central information display
  5. Car Information Computer
  6. Junction box
  7. Microphone, left side of vehicle
  8. Controller
  9. AUX-In connection combined for USB connection + jack plug
  10. Microphone, right side of vehicle
  11. Bluetooth antenna
  12. Antenna diversity
  1. USB hub
  2. Not for US
  3. Roof antenna
  4. ULF-SBX-High (6FL)
  5. Rear power distribution box

K-CAN - Body CAN
PT-CAN - Powertrain CAN
FlexRay - FlexRay bus system
MOST - Media Orientated System Transport
LVDS - Low voltage differential signal

Smartphone Integration Option Circuit Diagram

Audio Systems
Fig. 55: Smartphone Integration Option Circuit Diagram

INDEX REFERENCE CHART

  1. Central Gateway Module
  2. Steering column switch cluster
  3. Central Information Display
  4. Car Information Computer
  5. Controller
  6. AUX-In connection combined for USB connection + jack plug
  7. USB hub
  8. Base plate of universal charging and hands-free (Not for US)
  9. ULF-SBX-High (6FL)
  10. Rear power distribution box

K-CAN - Body CAN
K-CAN 2 - Fast body CAN
FlexRay - FlexRay bus system
MOST - Media Orientated System Transport
LVDS - Low voltage differential signal

NOTE: Smartphone Integration uses a cradle to connect and play music stored in a mobile phone. Currently this feature is only available with the Apple iPhone.

DVD Changer Circuit Diagram

Audio Systems
Fig. 56: DVD Changer Circuit Diagram

INDEX REFERENCE CHART

  1. Footwell Module
  2. Central Gateway Module
  3. Central Information Display
  4. Car Information Computer
  5. Automatic climate control
  6. Controller
  7. DVD changer
  8. Junction box
  9. Video switch

K-CAN - Body CAN
K-CAN 2 - Fast body CAN
FlexRay - FlexRay bus system
MOST - Media Orientated System Transport
LVDS - Low voltage differential signal

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