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

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

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

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

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

MOST SIGNALS FUNCTIONAL CHART

HiFi Speaker System Circuit Diagram

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

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

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

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

12. USB hub
13. Not for US
14. Roof antenna
15. ULF-SBX-High (6FL)
16. 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

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

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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