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1、BMW ServiceAftersales Training-Product InformationElectrical/Electronic Systems E93.The information contained inthe Product Information and the Workbook form an integral part ofthe training literature of BMW Aftersales Training.Refer to the latest relevant BMW Service information for any changes/sup
2、plements to thetechnical data.Information status:November 2006conceptinfobmw.de 2006 BMW GroupMnchen,Germany.Reprints of this publication or its parts require the writtenapproval ofBMW Group,Mnchen.VS-12 Aftersales TrainingProduct Information.Electrical/ElectronicSystemsE93.Function keys for CCC.Con
3、cealed antennas.Convertible mode,optimum climatecontrol with convertible top down.Rollover protection system.Notes on this Product InformationSymbols usedThe following symbols are used in this Product Information to facilitatebetter comprehension and to draw attention to important information.3conta
4、ins information to facilitate better understanding of thedescribed systems and their function.1 identifies the end of a note.Information status and national variantsBMW vehicles conform to the highest safety and quality standards.Changes in terms of environmental protection,customer benefits anddesi
5、gn render necessary continuous development of systems andcomponents.Consequently,this may result in deviations between thisProduct Information and the vehicles available in the training course.This document describes left-hand drive vehicles conforming to EU andUS specification.Some controls or comp
6、onents are in part arrangeddifferently in right-hand drive vehicles than shown on the graphics in theProduct Information.Further differences may arise as the result of theequipment variants used in specific markets or countries.Additional sources of informationFurther information on the individual s
7、ubjects can be found in thefollowing:-Owners Handbook-BMW diagnosis system-Workshop systems documentation-BMW Service Technology.Contents.Electrical/ElectronicSystems E93.Objectives1Reference for practical applications.1Introduction3Modifications in the electrical/electronicsystems of the E93 Conver
8、tible.3System overview5E93 EU system network5Vehicle systems network E92 US7Energy management in the E9310Functions17General vehicle electrical system17Central locking system20Anti-theft alarm system26Electrically adjustable seats with rearcompartment easy-entry29Changes to control units34Power wind
9、ows37Automatic climate control38Information and communication technology40Antenna systems44Arrangement of IKT control units in EUvehicles62Passive safety64Service information79Important information at a glance79Summary81Overview of most important points.81Test questions83Questions83Answers to questi
10、ons8513Objectives.Electrical/electronic systems E93.Reference for practical applications.This Product Information describes thechanges made in the E93 electrical/electronicsystems compared to the E92.This publication supplements the seminarmaterial defined by BMW Aftersales Training.This Product Inf
11、ormation can be used for self-study purposes and as a source of reference.In preparation for the technical training and inconnectionwith the practical exercises as partof the training course,this manual will enablethe participant to perform service work in thearea of the electrical/electronicsystems
12、in theE93.Technical and practical knowledge of thesystems in the BMW E90,E92 is theprerequisite for fully understanding thechanges and systems presented in thisProduct Information.2334IntroductionElectrical/Electronic Systems E93.Modificationsin the electrical/electronicsystemsof the E93Convertible.
13、The vehicle electrical system and the scope ofelectrical/electronic systems are largelyidentical to those of the E92 Coupe.Adaptations and modifications have beenimplemented in individual systems in view ofthe different body structures of the closedCoupe and the open Convertible.This publication des
14、cribes changes andmodifications that result in an expansion ormodification to the corresponding function.The system descriptions are subdivided intofollowing areas:Vehicle systems networkE93 EU and USEnergy managementTerminal controlGeneral vehicle electrical systemExterior lightingInterior lighting
15、Central locking systemAnti-theft alarm systemSeats with rear compartment easy entryChanges in control unitsPower windowsAir conditioning systemConvertible modeInformation and communicationtechnologyCCC function keysInterface box SBXAntenna systemsLocations of IKT control unitsPassive safetyCrash-rei
16、nforced bodyshellAdvanced crash and safety management2Rollover protection systemsSeat-integrated side airbagKnee airbag US.4455System overview.Electrical/Electronic Systems E93.E93 EU system networkBy adopting the system network from the E92,the corresponding system overviews areessentially identica
17、l.The E92/E93 vehicle systemsnetworks differonly slightly by the omission or addition of newcontrol units.The following changes have been made inthevarious bus systems:Changes to the PT-CANThe VGSG control unit and the DXC functionin the DSC are not required as the E93Convertible is not offered in a
18、 4-wheel driveversion.The 330d with diesel engine is equipped withan electromechanical steering system EPS.This system is used only in ACEA countries*for the purpose of reducing CO2 emissions.*Association of European automobilemanufacturers.Changes to the K-CANA new feature is the Convertible top mo
19、duleCTM which is connectedto the K-CANfor thepurpose of controlling the retractable hardtop.The ACSM 2 is used as the passive safetysystem which contains the sensors for therollover protection system.The SINE of the anti-theft alarm system DWAis no longer looped through the roof functionsmodule FZD
20、but rather connected directly tothe K-CAN.Changes to the MOSTThe universal charging and hands-free facilityULF is replaced by the interface box SBX withthe same scope of functions.The SBX isavailable in a further variant,i.e.the SBX Highwith expanded scope of functions.Changes to the LIN-busTwo cont
21、rol units for the seat belt extender onthe drivers and passengers side have beendropped from the LIN-bus as the seat belt inthe Convertible is located directly in the seat.Changes to the diagnosis busWith the introduction of the 320i Convertible,the D-CAN with a transmission rate of 500kbits/s is us
22、ed for the first time inthe E93.Theintroduction of the D-CAN is attributed to alegal requirementin the USA which stipulatesthat as from model year 2008 allnew vehiclesmust have a D-CAN in the OBD-II interface.The prerequisite for conforming to thisrequirement isa modified junction box with thecorres
23、ponding gateway functions.The diagnosis bus(115 kbits/s)is stillcurrentlyused in all other models.In future,thesemodels will also be changed over to D-CAN.The system network of the E93differs only marginally from that ofthe E92 in that new systems havebeen added or others omitted asthey are not offe
24、red in the E93.Anew feature is the Convertible topmodule on the K-CAN.The MRSsystem has been replaced by theACSM2 with rollover sensors.Theanti-theft system(DWA)isconnected directly to the K-CANand no longer looped through theFZD.651-Bus overview E93 Convertible EU75Vehicle systems network E92 USThe
25、 vehicle systems network US differs inthatitfeatures other systemsprovided specificallyfor the USA and Canada.Since no diesel vehicles are offered in theUSA,the corresponding control units havebeen omitted on the PT-CAN and BSD.Changes in K-CANA new feature is the Convertible top moduleCTM which is
26、connectedto the K-CANfor thepurpose of controlling the retractable hardtop.The ACSM 2 is used as the passive safetysystem which contains the sensors for therollover protection system.The SINE of the anti-theft alarm system DWAis no longer looped through the roof functionsmodule FZD but rather connec
27、ted directly tothe K-CAN.The RDC is a tyre pressure monitoring systemthat replaces the tyre failure indicator RPA inUS vehicles to conform to legal requirements.Changes in LIN-busTwo control units for the seat belt extender onthe drivers and passengers side have beendropped from the LIN-bus as the s
28、eat belt inthe Convertible is located directly in the seat.852-Bus overview E93 Convertible US95IndexExplanationIndexExplanationACCActive cruise controlJBJunction boxACSMAdvanced crash and safetymanagementKOMBIInstrument clusterAHMTrailer moduleLDMLongitudinal dynamicsmanagementALActive steering sys
29、temLWSSteering angle sensorASPOutside mirrorM-ASKMulti-audio system controllerCAComfort accessMW-SENMicrowave sensorsCASCar access systemOC3Seat occupancydetector,US onlyCCCCar communication computerPDCPark distance controlCDCCD changerQLTQuality,level,temperature,oilsensorCIDCentral information dis
30、playRADRadio1 or radio2CONControllerRLSRain/driving light sensorCTMConvertible top moduleSBFADrivers door switch clusterDABDigital audio broadcastSBXInterface boxDDEDigital diesel electronics(not forUS vehicles)SDARSSatellite tuner(US only)DMEDigital motor electronicsSHAuxiliary heaterDSCDynamic sta
31、bility controlSINEEmergency current siren withintegrated tilt alarm sensorDSC-SENDSC sensorSMBFPassengers seat moduleDWAAnti-theft alarm systemSMCStepper motor controllerEGSElectronic transmission controlunitSMFADrivers seat moduleEKPElectric fuel pump control unitSZLSteering column switch clusterEL
32、VElectric steering lock(EU only)TAGEElectronic outer door handlemoduleEPSElectromechanicalsteering,330donlyTCUTelematics control unitEWPElectric coolant pumpTNSTemperature,oil level sensorFLAHigh beam assistantTOP-HiFiTop-HiFi amplifierFRMFootwell moduleRDCTyre pressure control,US onlyFSMOST direct
33、accessRDC-SENRDC sensors,US onlyFZDRoof functions moduleROCRollover controllerGSGPreheater control unit,only fordieselVMVideo module(not for US vehicles)IBOCIn Band On Channel(digital radiofor US)ZHElectric auxiliary heater based onPTC principleIBSIntelligent battery sensorIHKAAutomatic climate cont
34、rolIHKRIntegrated heating and airconditioning control105Energy management in the E93As in the current models,an energymanagement system is also used on theBMW 3 Series Convertible to ensure abalanced energy supply in the vehicle.The energy management functions areintegrated in the power management s
35、ystemthat is implementedin the form of software inthe engine control unit(DME/DDE).The power management,the componentsand the various functions of the system differdependingon the equipmentconfiguration ofthe vehicle.Two energy managementcontrol systems areinstalled:Basic Power Management BPMAdvance
36、d Power Management APMOn vehicles equipped with advanced powermanagement modifications have been madein the terminal shut-down system throughrelay 30g and 30g f.Advanced Power Management APMAdvanced power management APM is usedon vehicles featuring following options:Comfort accessMulti-audio system
37、controllerCar communication computerAuxiliary heaterTelephone US/telephone preparation USThe advanced power management has beenexpanded by the intelligent battery sensor IBS.Inaddition to the change inthe idle speed andthe specified charging voltage target value,thesystem includes the following func
38、tions thatdiffer from the BPM.Expanded APM functionsElectric load reductionElectric load shut-downSystems network diagnosisBattery diagnosisAPM control circuitThe energy managementinthe E93is essentially identical to that in theE92.Corresponding to theequipmentconfiguration,the E93 isequipped with b
39、asic or advancedpower management.The additionalcontrol units are integrated in theterminal shut-down facility via relays30g and 30g_f.IndexExplanation1Advanced power management2Idle speed boost3Combustion engine4Charging voltage target value5Alternator6Electric load reduction7Electric loads8Electric
40、al system and batterydiagnosis9BMW diagnostic system10Intelligent battery sensor11Battery data3-Advanced power management control circuitIndexExplanation115Bus overview with terminal status E93 EU4-Terminal status E93 EU125Bus overview with terminal status E93 US5-Terminal status E93 US135IndexExpla
41、nationIndexExplanationACCActive cruise controlJBJunction boxACSMAdvanced crash and safetymanagementKOMBIInstrument clusterAHMTrailer moduleLDMLongitudinal dynamicsmanagementALActive steering systemLWSSteering angle sensorASPOutside mirrorM-ASKMulti-audio system controllerCAComfort accessMW-SENMicrow
42、ave sensorsCASCar access systemOC3Seat occupancy detector,US onlyCCCCar communication computerPDCPark distance controlCDCCD changerQLTQuality,level,temperature,oilsensorCIDCentral information displayRADRadio1 or radio2CONControllerRLSRain/driving light sensorCTMConvertible top moduleSBFADrivers door
43、 switch clusterDABDigital audio broadcastSDARSSatellite tuner(US only)DDEDigital diesel electronics(not forUS vehicles)SHAuxiliary heaterDMEDigital motor electronicsSINEEmergency current siren withintegrated tilt alarm sensorDSCDynamic stability controlSMBFPassengers seat moduleDSC-SENDSC sensorSMCS
44、tepper motor controllerDWAAnti-theft alarm systemSMFADrivers seat moduleEGSElectronic transmission controlunitSZLSteering column switch clusterEKPElectric fuel pump control unitTAGEElectronic outer door handlemoduleELVElectric steering lock(EU only)TCUTelematics control unitEPSElectromechanicalsteer
45、ing,330donlyTNSTemperature,oil level sensorEWPElectric coolant pumpTOP-HiFiTop-HiFi amplifierFLAHigh beam assistantRDCTyre pressure control,US onlyFRMFootwell moduleRDC-SENRDC sensors,US onlyFSMOST direct accessROCRollover controllerFZDRoof functions moduleULFUniversal charging and hands-freefacilit
46、yGSGPreheater control unit,only fordieselVMVideo module(not for US vehicles)IBOCIn Band On Channel(digital radiofor US)ZHElectric auxiliary heater based onPTC principleIBSIntelligent battery sensorIHKAAutomatic climate controlIHKRIntegrated heating and airconditioning control145Terminal shut-down id
47、entificationTo provide clear identification of the terminalshut-down function,the control units areidentified with coloured triangles.Theidentification and assignmentto the individualterminals is shown in the illustration opposite.Electric load shut-down terminal 30g relayTime-dependent shut-downThe
48、 E93 is equipped with a terminal 30g relayfor switching off the power supply to mostcontrol units.Most convenienceelectric loadssuch as the radio are switched off after 30minutes by terminal 30g in order to maintainthe starting capability of the battery.The afterrunning time is extended to 60minutes
49、 if a telephone or auxiliary heatingsystem is installed in the vehicle.The terminal30g relay is activated by the car accesssystem.Electric load shut-down terminal 30g_f relayFault-dependent shut-downThe terminal 30g_f relay is additionallyinstalled in the junction box of the E93 onlywhen one of the
50、following equipmentoptionsis ordered:Comfort accessM-Audio system controllerCar communication computerAuxiliary heaterTelephone US/telephone preparation USThe terminal 30g_f relay is a bistable relay andis always in the ON state under normalconditions.It switches off the connectedcontrol units only