BMW E65 Bedienungsanleitung

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Initial Print Date: 10/01 Revision Date: 11/01
Subject Page
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Bus Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
E65 Bus System Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
E65 Sub-Bus Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gateways. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Controller Area Network (CAN Bus). . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
E65 K-CAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PT-CAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fiber-Optic Bus Lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Fiber-Optic use in the E65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
MOST Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Byteflight
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Diagnosis Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Review Questions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table of Contents
E65 BUS SYSTEMS
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1 2 3 4 5 6 ... 50 51

Inhaltsverzeichnis

Seite 1 - E65 BUS SYSTEMS

Initial Print Date: 10/01 Revision Date: 11/01Subject PageIntroduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seite 2 - Model: E65 - 745i

10E65 Bus SystemsBSDCommunication via the BSD enables adjustment of the battery charging voltage, and com-munication between the DME and oil quality s

Seite 3 - Bus systems

11E65 Bus SystemsUsing gateway rules and conversion tables, the gateway converts the messages asrequired by the various bus systems concerned. The mes

Seite 4

12E65 Bus SystemsExamples of the Function of the Central Gateway Module (ZGM)The DME and DSC control units both place mes-sages on the PT-CAN. Those m

Seite 5 - Bus Communication Speeds

13E65 Bus SystemsWindscreen Wiper FunctionThe driver operates the windscreen wiper switch (SWS) to initiate a wiper system function.The wiper switch i

Seite 6 - E65 BUS SYSTEM

14E65 Bus SystemsExamples of CAS Gateway FunctionSeat AdjustmentThe driver operates the seat adjustment switch. The command is processed by the switch

Seite 7 - E65 Sub-Bus Systems

15E65 Bus SystemsExample of CD Gateway FunctionPDCThe audible PDC warning is output via the audio system speakers. If the car gets close toan obstacl

Seite 8

16E65 Bus SystemsController Area Network (CAN Bus)IntroductionThe CAN bus is a serial communications bus in which all connected control units can send

Seite 9

17E65 Bus SystemsAdvantages of two K-CAN Busses• In a crash, it is possible that components could fail as a result of a short circuit on theK-CAN. The

Seite 10 - Gateways

18E65 Bus SystemsVoltage Level on the K-CAN.If the CAN High voltage level changes from low to high, this represents a logical 1. If thevoltage level c

Seite 11 - Overview of E65 gateways

19E65 Bus SystemsThe control units are categorized either as basic control units or other control units.Categorization is performed on the basis of th

Seite 12

2E65 Bus SystemsE65 BUS SYSTEMSModel: E65 - 745iProduction Date: 11/2001- Start of Production Objectives:After completing this module you should be ab

Seite 13 - E65 Bus Systems

20E65 Bus SystemsPT (Powertrain) CANIntroductionThe PT CAN is the fastest CAN bus in the E65. It is an existing bus system. PT CANstands for powertr

Seite 14

21E65 Bus SystemsFailsafe CharacteristicsIf the PT CAN goes into emergency mode it is no longer available for the engine control sys-tem. However, it

Seite 15

22E65 Bus SystemsEasy to Work With. The fiber (core) is approximately 1 mm thick and easier to handlethan glass optical fiber with a thickness of app

Seite 16 - E65 K-CAN

23E65 Bus SystemsPrinciple of Light TransmissionThe electrical signal generated by the control unit is converted into an optical signal by aninternal

Seite 17

24E65 Bus SystemsLight AttenuationAttenuation refers to the reduction in strength of a signal. The light transmitted along theoptical fiber becomes w

Seite 18

25E65 Bus SystemsBending radiusThe plastic fibre-optic cable should not be bent to a radius of less than 50 mm. That isroughly equivalent to the diame

Seite 19 - Terminal Resistors

26E65 Bus SystemsCompression Points and StretchingCompression points must also be avoid-ed because they can permanently deformthe light-conducting cro

Seite 20 - PT (Powertrain) CAN

27E65 Bus SystemsAbrasion PointsIn contrast with copper wires,abrasion of fiber-optic cablesdoes not cause a short circuit.Instead, loss of light or i

Seite 21 - Fiber-Optic Bus Lines

28E65 Bus SystemsOverheated Fibre-Optic CablesThe demands of the new technology even have to be taken into account in subsequentrepair work such as pa

Seite 22 - Light source provided

29E65 Bus SystemsMOST BusThe MOST bus transmits all data required by thecommunication and information systems in the vehi-cle. MOST stands for Media O

Seite 23

3Bus SystemsIntroductionThe safety and comfort of vehicles are continually advancing. Legal requirements relating tofuel consumption and exhaust emiss

Seite 24

30E65 Bus SystemsbyteflightIn contrast with the MOST bus, the byteflightis a starbus which transports data in two directions. That meansthat there is

Seite 25

31E65 Bus SystemsMOST busIntroductionMOST is communications technology for multimedia applications, specially developed foruse in the automobile. MOS

Seite 26

32E65 Bus SystemsSystem OverviewMOST TechnologyUntil very recently, only very few entertainment-related control units were networked. In thecourse of

Seite 27 - Scratched

33E65 Bus SystemsPrinciple of a Multimedia NetworkAn important feature of a multimedia network is that it transports not only control data andsensor d

Seite 28 - Fiber optic use in the E65

34E65 Bus SystemsData QuantitiesThe aim is that in the near future all vehicle occupants can call up different services at onetime, e.g.:• The driver

Seite 29

35E65 Bus SystemsFunctional DescriptionData TransportMOST currently offers a band-width of 22.5 Mbits/s . In the next generation, the band-widthwill b

Seite 30

36E65 Bus SystemsOptical BusThe MOST bus is a plastic optical waveguide. The MOST bus is coded in green in the E65.The light wavelength is 650 nm (re

Seite 31 - MOST bus

37E65 Bus SystemsControl Unit/Control Unit ConnectionThe MOST ring is composed of optical point-to-point connections between 2 control units.Each cont

Seite 32

38E65 Bus SystemsInterfacesThe following contains a brief summary of the tasks ofthe connected control units in the MOST framework:Control DisplayThe

Seite 33

39E65 Bus SystemsDiagnosisIf faults occur in the MOST network, the corresponding fault code memory entries can beread out.• Receiver has not accepted

Seite 34

4E65 Bus SystemsAdvantages of Bus Systems• Greater reliability of the overall system• Simplification of wiring systems• Reduction of the number of sep

Seite 35

40E65 Bus SystemsCommunication Direction in MOST structureThe signal transmission direction of the MOST in a vehiclewith full equipment takes place st

Seite 36

41E65 Bus SystemsRelative Node Position " 0 " The voltage supply of the MOST controllers is switched off (battery disconnected), afterwards

Seite 37 - Navigation

42E65 Bus Systems• Relative node position Control Display: 2 • Relative node position Instrument Cluster: 1 • Relative node position Audio System Co

Seite 38

43E65 Bus SystemsImportant!!The relative node positions are counted starting from the Control Display, backwards to thecontroller with the relative no

Seite 39

44E65 Bus SystemsRepair of the MOST Fiber-Optic CablesThe MOST bus may only be repaired (spliced) once between 2 control units, otherwise theattenuati

Seite 40

45E65 Bus SystemsbyteflightIntroductionThe permanently increasing complexity of in-car electronicsand the rapidly growing amount of sensors, actuators

Seite 41

46E65 Bus SystemsThe layout of the ISIS takes the form of a star pattern. The Safety Information Module (SIM)is at the centre of the system. Arranged

Seite 42

47E65 Bus SystemsThe transmitter/receiver (SE) module contains the LED for the driver circuit and the receiv-er amplifier for converting the optical s

Seite 43

48E65 Bus SystemsData TransmissionThe ISIS has a number of sensors positioned at strategic points throughout the vehicle.They are located in the satel

Seite 44

49E65 Bus SystemsDiagnosis busIntroductionThe aim of diagnosis is to enable a Technician to reliably identify a defective component. Bythe use of appr

Seite 45

5E65 Bus SystemsBus Communication SpeedsThe communication speed of the busses in the E65 have been increased significantly tohandle the demand placed

Seite 46 - Transmitter/Receiver modules

50E65 Bus SystemsDiagnosis ConceptThe "BMW Fast" (BMW fast access for service and testing) diagnosis concept introducedon the E65 is applied

Seite 47 - Satellites

51E65 Bus SystemsReview Questions1. How many bus systems is the E65 equipped with? Hint: Don’t forget the sub-busses.2. Which modules perform the tas

Seite 48

6E65 Bus SystemsE65 BUS SYSTEMKT-7323

Seite 49 - Diagnosis bus

7E65 Bus SystemsE65 Sub-Bus SystemsIn addition to the bus systems, sub-bus systems are also used. These are subordinate ser-ial bus systems. Their fu

Seite 50

8E65 Bus SystemsEngine LoCANThe Engine LoCAN enables communication between the DME and the Valvetronic controlunit.TelCommander CANThe TelCommander CA

Seite 51 - Review Questions

9E65 Bus SystemsM-BusThe M bus enables control of the various motors for the air conditioning system.DWA K-BusThe functions of the alarm system are sp

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