GF00.19-P-0001SXE Overall Network (GVN) Function
GF00.19-P-0001SXE Overall Network (GVN) Function
- MODEL 216.3, 221.0 /1
Illustrated on model 221.0
A1 Instrument cluster
A6n1 STH control unit (model 216 with code (228) Stationary heater) STH or HB [ZUH] control unit (model 221 with code (228) Stationary heater)
A13 Electric parking brake controller unit
A40/3 COMAND controller unit
A40/5 Left rear display (model 221 with code (864) Rear entertainment system)
A40/6 Right rear display (model 221 with code (864) Rear entertainment system)
A40/8 COMAND display
A40/9 Front central operating unit
A76 Left front reversible emergency tensioning retractor (model 221)
A76/1 Right front reversible emergency tensioning retractor (model 221)
A80 Intelligent servo module for DIRECT SELECT
A89 DTR controller unit (with code (219) Distronic (DTR) or with code (233) Distronic Plus)
A90/1 TV combination tuner (analog/ digital) (for code (863) Digital/ analog TV tuner)
B24/15 Yaw rate, lateral and longitudinal acceleration sensor
E1n1 Xenon headlamp control unit (for model 221 with code (615) Bi-xenon headlamp unit with integrated curve illumination or model 216)
E2n1 Xenon headlamp control unit (for model 221 with code (615) Bi- xenon headlamp unit with integrated curve illumination or model 216)
M25/1 Lumbar pump
M40 Multicontour seat pneumatic pump (with code (409) Left/right front multicontour seats)
M40/1 Pneumatic pump for dynamic seat control (with code (432) Left and right dynamic multicontour seat)
N2/7 Restraint systems control unit
N2/13 WSS (Weight Sensing System) control unit (model 221 with code (494) USA version)
N3/9 CDI control unit (with diesel engine)
N3/10 ME-SFI [ME] control unit (with gasoline engine)
N10/1 Front 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)
N22/1 AAC [KLA] control unit
N22/4 Rear air conditioning control unit (model 221 with code (582) Rear air conditioner)
N25/6 Rear seats control unit (model 221 with code (223) Rear seat bench with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints or for code (276) Memory in rear or with code (402) Rear comfort seats, incl. seat heating and seat ventilation or with code (872) Electrically heated left and right rear seats)
N26/9 Special vehicle multifunction control unit (SVMCU [MSS]) (model 221 with code (450) Taxi version)
N26/14 Special vehicle multifunction control unit (SVMCU [MSS]) (special-purpose vehicles model 221)
N28/1 Trailer recognition control unit (model 221 with code (550) Trailer hitch)
N32/1 Left front seat control unit
N32/2 Right front seat control unit
N32/15 Left front multicontour backrest control unit (with code (409) Left/ right front multicontour seats)
N32/16 Right front multicontour backrest control unit (with code (409) Left/ right front multicontour seats)
N32/19 Left front dynamic seat control unit (with code (432) Left and right dynamic multicontour seat)
N32/20 Left rear multicontour backrest control unit (model 221 with code (406) Rear multicontour seat)
N32/21 Right rear multicontour backrest control unit (model 221 with code (406) Rear multicontour seat)
N32/22 Right front dynamic seat control unit (with code (432) Left and right dynamic multicontour seat)
N41/3 Voice control system control unit (VCS [SBS]) (with code (390-396) Linguatronic or with code (813) Voice control system (VCS [SBS]))
N47-5 ESP control unit
N51 AIRmatic with ADS control unit (model 221 without code (487) Active Body Control (ABC))
N51/2 ABC control unit (model 221 with code (487) Active Body Control (ABC) or model 216)
N62 PTS control unit (with code (220) Parktronic system (PTS))
N62/1 Radar sensors control unit (SGR) (with code (233) Distronic Plus)
N66/2 Backup camera control unit (with code (218) Backup camera)
N66/3 Audio/video controller control unit (model 221 with code (864) Rear entertainment system)
N69/1 Left door control unit (model 216) Left front door control unit (model 221)
N69/2 Right door control unit (model 216) Right front door control unit (model 221)
N69/3 Left rear door control unit (model 221)
N69/4 Right rear door control unit (model 221)
N69/5 Keyless-Go control unit (with code (889) Keyless-Go)
N70 Overhead control panel control unit
N72/1 Upper control panel control unit
N72/2 RCP [HBF] control unit (for model 221 with code (406) Rear multicontour seat or with code (864) Rear entertainment system)
N73 EIS [EZS] control unit
N80 Steering column module
N82/1 Vehicle power supply control module
N87/5 SDAR control unit (with code (536) SIRIUS satellite radio and code (494) USA version)
N88 TPM [RDK] control unit (with code (475) Tire pressure monitor (Siemens) or with code (470) Tire pressure monitor (standard) or with code (494) USA version)
N93 Central gateway control unit
N93/1 Audio tuner control unit
N101 Night View Assist control unit (for code (610) Night View Assist)
N118 Fuel pump control unit
N121 TLC [HDS] control unit (with code (881) Remote trunk closing (RTC [HDFS]))
N123/1 Universal Cell phone Interface (UPCI [UHI]) control unit (with code (386) Preinstallation for telephone "Handy", UPCI system or code (387) Preinstallation for telephone "Handy", UPCI system, USA/Canada or code (388) Telephone "Handy", UPCI system or code (389) Mobile phone preinstallation with universal interface, USA/Canada)
N123/4 Emergency call system control unit (with code (494) USA version
Y3/8n4 Fully integrated transmission control (VGS) control unit (with transmission 722.9)
Overall network
The further development of the driver information system as well as the roll-out of video-based, driver-supported systems (backup camera, ambient sensor technology, etc.), are reflected in the requirements placed on the data bus systems.
A data bus is a data collection line, the data of which can be used by all the control units connected.
Function
Most control units of the vehicle are linked to each other via data bus lines, in other words there is no direct electrical connection between a sensor and the executing actuator.
A corresponding message (data) is generated using the sensor signal and made available to the data bus system. However, the data flow must be controlled using an access procedure (log) if all control units utilize a common bus line.
When transferring data within a Controller Area Network (CAN bus), the connected control units are not addressed, but rather the content of a message (e.g. rpm or engine temperature) is marked by a unique identifier.
With the subsequent acceptance filtering, all control units - upon correct reception of the message - use the identifier to determine whether the data are relevant for them or not.
Overall network
Basically, the following data bus systems are involved in the networking:
- Telematics CAN
- Interior CAN
- Drive train CAN
- Diagnostic CAN
- Chassis CAN
- Central CAN
- Front end CAN
- Vehicle dynamics CAN
- Media Oriented System Transport (MOST)
Distinguishing features
- The telematics CAN is responsible for telecommunication data transfer. It networks the COMAND controller unit with the control units for the rear functions. The telematics CAN operates at a transfer rate of 125 kBit/s.
- The interior CAN is responsible for data transfer in the vehicle interior. It interconnects the different systems that can be operated by the driver or the front passenger (e.g. power windows, interior air conditioning system etc.). The interior CAN operates at a transfer rate of 125 kBit/s.
- The drive train CAN is responsible for data transfer for the drive systems. The drive train CAN operates at a transfer rate of 500 kBit/s.
- The diagnostic CAN is responsible for transferring the diagnostic data to STAR DIAGNOSIS and for connecting the emergency call system control unit.
- The diagnostics CAN operates at a transfer rate of 500 kBit/s. The chassis CAN is responsible for data transfer between the chassis systems. The chassis CAN operates at a transfer rate of 500 kBit/s.
- The central CAN is primarily responsible for data transfer between the COMAND controller unit (telematics CAN, MOST) and the central gateway control unit. The central CAN operates at a transfer rate of 500 kBit/s.
- The front end CAN is responsible for data transfer between the Xenon headlamp control units, electric parking brake control unit to the central gateway control unit. The front end CAN operates at a transfer rate of 500 kBit/s.
- The vehicle dynamics CAN is responsible for data transfer from driving safety systems (e.g. Distronic, Night View Assist, rotational speed etc.). The vehicle dynamics CAN operates at a transfer rate of 500 kBit/s.
The telematics CAN interconnects the following control units:
- COMAND controller unit
- Left rear display
- Right rear display
- COMAND display
- Front central operating unit
- TV combination tuner
- Rear AC control unit
- Audio/video controller control unit
- RCP [HBF] control unit
The following control units are connected to each other over the interior CAN:
- STH control unit
- Lumbar pump
- Multicontour seat pneumatic pump
- Pneumatic pump for dynamic seat control
- WSS (Weight Sensing System) control unit
- Front SAM control unit with fuse and relay module
- Rear SAM control unit with fuse and relay module
- AAC [KLA] control unit
- Rear control unit (N22/6) (model 216)
- Rear seats control unit
- Special vehicle multifunction control module (SVMCM)
- Trailer recognition control unit
- Left front seat control unit
- Right front seat control unit
- Left front multicontour backrest control unit
- Right front multicontour backrest control unit
- Left front dynamic seat control unit
- Right front dynamic seat control unit
- Left rear multicontour backrest control unit
- Right rear multicontour backrest control unit
- PTS control unit Backup camera control unit
- Door control module left
- Door control module front left
- Door control module right
- Door control module front right
- Door control module rear left
- Door control module rear right
- Keyless Go control unit
- Overhead control panel control unit
- Upper control panel control unit
- EIS [EZS] control unit
- TPM [RDK] control unit
- Central gateway control unit
- Weight Sensing System (WSS) control unit (N110) (model 216)
- WSS (Weight Sensing System) control unit
- TLC [HDS] control unit
The following control units are connected to each other over the drive train CAN:
- Intelligent servo module for DIRECT SELECT
- CDI control unit ME-SFI [ME] control unit
- ETC [EGS] control unit
- Fuel pump control unit
- Fully integrated transmission control (VGS) control unit
The following control units are connected to each other over the diagnostics CAN:
- Central gateway control unit
- Emergency call system control unit
The following control units are connected to each other over the chassis CAN:
- Left front reversible emergency tensioning retractor
- Right front reversible emergency tensioning retractor
- Restraint systems control unit
- CDI control unit ME-SFI [ME] control unit
- ESP control unit
- AIRmatic with ADS control unit
- ABC control unit
- Radar sensors control unit (SGR)
- EIS [EZS] control unit
- Steering column module
- Vehicle power supply control module
- Central gateway control unit
The following control units are connected to each other over the central CAN:
Instrument cluster COMAND controller unit Central gateway control unit
The following control units are connected to each other over the front end CAN:
- Electric parking brake controller unit
- Xenon headlamp control units
- Central gateway control unit
The following control units are connected to each other over the vehicle dynamics CAN:
- DTR controller unit
- Yaw rate, lateral and longitudinal acceleration sensor
- ESP control unit
- Radar seniors control unit (SGR)
- Night vision assist control unit
The MOST interconnects the following control units:
- COMAND controller unit
- TV combination tuner
- Voice control system (VCS [SBS]) control unit
- SDAR control unit
- Audio tuner control unit
- UPCI control unit
Data transfer between the bus systems
The following control units form the interface between the bus systems:
- The central gateway control unit connects the interior CAN, diagnostic CAN, chassis CAN, central CAN and the front end CAN
- The COMAND controller unit connects the telematics CAN, central CAN and the MOST
- The TV combination tuner connects the telematics CAN with the MOST
- The ESP control unit and the Radar sensors control unit connect the chassis CAN with the vehicle dynamics CAN
- The CDI control unit or the ME-SFI [ME] control unit connects the drive train CAN with the chassis CAN
