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Home >> Mercedes Benz >> 2008 >> SLK 280 (171.454) V6-3.0L (272.942) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Description and Operation >> GF00.19-P-0001SK Overall Network (GVN) Function

GF00.19-P-0001SK Overall Network (GVN) Function




GF00.19-P-0001SK Overall Network (GVN) Function
- MODEL 171.4 up to Model Year 8







A1 Instrument cluster
A2 Radio (with code (523) MB Audio 20 radio or code (535) Audio 20 CD radio, USA)
A2/6 CD player with changer (in glove box) (for code (819) 6-disk CD changer)
A2/56 Radio and navigation unit (for code (525) MB Audio 50 APS radio)
A35/1 Hands-free system control unit (with code (529) HIGH Class Japan)
A35/11 Voice control system control unit (with code (527) COMAND APS with single DVD drive (with navigation system) or with code (530) COMAND APS USA (with navigation system))
A40/3 COMAND operating, display and controller unit (with code (527) COMAND APS with single DVD drive (with navigation system), with code (529) HIGH Class Japan) or with code (530) COMAND APS USA (with navigation system))
N2/7 Restraint systems control unit
N3/10 ME control unit
N10/1 Driver-side SAM control unit with fuse and relay module
N10/2 Rear SAM control unit with fuse and relay module
N15/3 ETC control unit (with transmission 722.6)
N15/5 Electronic selector lever module control unit (with transmission 722)
N18 HEAT control and operating unit (without code (580) Automatic air conditioning and without code (581) Comfort automatic air conditioning)
N22 AC control and operating unit (with code (580) Automatic air conditioning)
N22/7 Comfort AC control and operating unit (with code (581) Comfort automatic air conditioning)
N25/7 Front HS [SIH], AIRSCARF and steering wheel heater control unit (with code (403) AIRSCARF system, with code (443) Steering wheel heater or with code (873) Right and left front seat heaters)
N32/1 Driver front seat adjustment control unit with memory (with code (275) Memory package (driver seat, steering column, mirrors))
N32/2 Passenger-side front seat adjustment control unit with memory (with code (242) Electrically adjustable front passenger seat with memory)
N41/1 Navigation processor (with code (527) COMAND APS with single DVD drive (with navigation system) or with code (530) COMAND APS USA (with navigation system))
N47-5 ESP and BAS control unit
N52 Power soft top control unit
N62 PTS control unit (with code (220) Parktronic system (PTS))
N69/1 Left door control unit
N69/2 Right door control unit
N70 Overhead control panel control unit
N71 Headlamp range adjustment control unit (with code (614) Bi-xenon headlamp unit)
N72/1 Upper control panel control unit
N73 EIS [EZS] control unit
N80 Steering column module
N41/6 GPS box control unit (with code (529) HIGH Class Japan)
N87/5 SDAR control unit (with code (536) (SIRIUS satellite radio)
N93 Central gateway control unit
N93/1 Audio gateway control unit (with code (525) MB Audio 50 APS radio, with code (527) COMAND APS (with navigation system), with code (529) HIGH Class Japan or with code (530) COMAND APS USA (with navigation system))
N123/1 Universal Portable CTEL Interface (UPCI [UHI]) control unit (with code (388) Telephone "Handy", UPCI system, with code (386) Preinstallation for telephone "Handy", UPCI system or with code (359) TELE AID emergency call system)
N123/4 Emergency call system control unit (with code (359) TELE AID emergency call system)
Y3/8n4 Fully integrated transmission control (VGS) control unit (with transmission 722.9)

Overall network
4 data bus systems are involved in the networking:
- Controller Area Network bus class B (interior compartment) (CAN-B)
- Controller Area Network bus, class C (engine compartment) (CAN-C)
- Controller Area Network bus class D (diagnosis) (CAN-D)
- Media Oriented System Transport (MOST)

The deployment areas differ as follows:
- MOST is an optical data bus system. Here, data are transferred via a fiber optic cable to the connected information, navigation and communications systems.
- The CAN-B is responsible for data transfers in the vehicle interior. It controls the different systems that can be operated by the driver or the front passenger (e.g. power windows, interior air conditioning). The CAN-B operates at a transfer rate of 83.3 kbits/s.
- The CAN-C is responsible for data transfers in the engine compartment for the propulsion and chassis systems. The CAN-C operates at a transfer rate of 500 kbits/s.
- CAN-D is responsible for the data transfer to STAR DIAGNOSIS. The CAN-D operates at a transfer rate of 500 kbits/s. Depending on the national version, a control unit for navigation or emergency call system is connected additionally.

The MOST interconnects the following control units:
- Radio
- CD player with changer (in glove compartment)
- Radio and navigation unit
- Hands-free system control unit
- Voice control system control unit
- COMAND operating, display and controller unit
- Navigation processor
- SDAR control unit
- Audio gateway control unit
- Universal Portable CTEL Interface (UPCI [UHI]) control unit

The CAN-B interconnects the following control units:
- Instrument cluster
- Radio
- Radio and navigation unit
- COMAND operating, display and controller unit
- Restraint systems control unit
- Driver-side SAM control unit with fuse and relay module
- Rear SAM control unit with fuse and relay module
- HEAT [HAU] control and operating unit
- AAC [KLA] control and operating unit
- Comfort AAC control and operating unit
- Front SH [SIH], AIRSCARF and steering wheel heater control unit
- Driver front seat adjustment control unit with memory
- Front passenger front seat adjustment control unit with memory
- Power soft top control unit
- PTS control unit
- Left door control unit
- Right door control unit
- Overhead control panel control unit
- Upper control panel control unit
- EIS [EZS] control unit
- Steering column module
- Central gateway control unit
- Audio gateway control unit

The CAN-C interconnects the following control units:
- Instrument cluster
- ME-SFI [ME] control unit (located at side next to air filter for engine 271, and on the engine for engine 272 and 113)
- EGS control unit
- Electronic selector lever module control unit
- ESP and BAS control unit
- Headlamp range adjustment control unit
- EIS [EZS] control unit
- Steering column module
- Central gateway control unit
- Fully integrated transmission control (VGS) control unit

CAN-D interconnects the following control units:
- GPS box control unit
- Emergency call system control unit
- STAR DIAGNOSIS (external tester)

Interfaces between the data bus systems (gateways):
- The EIS [EZS] control unit or the central gateway control unit forms the interface between CAN-B, CAN-C, and CAN-D.

Although the instrument cluster and the steering column module are also connected to CAN-B and CAN-C, they do not form any interface. They transmit the data that are needed to the respective data bus depending on what needs to be done.

- The radio or the radio and navigation unit or COMAND operating, display and controller unit or the audio gateway control unit forms the interface between CAN-B and MOST.








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