10 E60%20Voltage%20Supply%20and%20Bus%20Systems, BMW educational info, Dokumentacja
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//-->Table of ContentsE60 Voltage Supply and Bus SystemsSubjectPageVoltage Supply and Bus Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Voltage Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Ground Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Battery Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Battery Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Intelligent Battery Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Mechanical Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7IBS Measuring Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Electronic Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8IBS Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9IBS Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9IBS Charge Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Closed-Circuit Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10IBS Wake-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Servicing the IBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11IBS Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Voltage Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Current Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Terminal 15 Wake-up Signal Faults . . . . . . . . . . . . . . . . . . . . . . . . .12SoC/SoH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12State of Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12State of Health . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1230g and MPM System Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Terminal 30g Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1530g Switch On Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1630g Switch Off Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16Initial Print Date: 08/03Revision Date: 10/03SubjectPageMicro-Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16Normal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Service Information for MPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21Digital Motor Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21Variable Battery Charging Voltage . . . . . . . . . . . . . . . . . . . . . . . . . .22Idle Speed Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22Reducing Peak Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22Electric Load Cutout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22Data Transfer to the IBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Closed-Circuit Current Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . .23Terminal 30g Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Bus Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25K-CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25K-CAN Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25MOST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Most Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25byteflight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25byteflight Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25byteflight Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26PT-CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26Bus system parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26Subbus Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27LIN-Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27LIN-Bus Main Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27F-CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28BSD (Bit-Serial Data Interface) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28Sub-bus System Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29MOST Connector Junction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29Model: E60Production: Start of Production MY 2004Voltage Supply and Bus SystemsObjectives:After completion of this module you will be able to:••••Understand IBS operation.Explain Power Management.Recognize the different bus systems.Diagnose Voltage Supply Faults.3E60 Voltage Supply and Bus SystemsVoltage Supply and Bus SystemsVoltage SupplyThe voltage supply system on the E60 is similar to that of the E65. The E60, however, isNotfitted with a power module, therefore there is no main power switch. Supply voltageis monitored during both driving and parked conditions to reduce the possibility of unwant-ed closed current draws and insure that adequate voltage is available as needed.The "State of Charge" (SoC) and the "State of Health" (SoH) of the battery are determinedcontinuously with the E60 power management system.Typical Voltage Supply for 6 Cylinder Vehicles1. Intelligent Battery Sensor (IBS)2. Battery3. Ignition/Starter Switch (ZAS)4. DME5. Alternator6. Starter7. Starter Relay8. Rear Power Distribution Box w/ Terminal 30g Relay9. Front Power Distribution Box10. Car-access System (CAS)11. Micro-Power Module (MPM)4E60 Voltage Supply and Bus SystemsSystem ComponentsThe power supply system consists of the following components:••••••••Vehicle Ground PointsBatteryBattery CableIntelligent Battery Sensor with ground Lead (IBS)Terminal 30g RelayMicro-Power Module (MPM)DMECar Access System (CAS)Ground PointsThe ground point (GRAV) improves the electro-magnetic compatibility (EMC) of the vehicle.Ageing connections between the front end andthe remaining car body do not affect the EMC. Thecontact resistances between the front end and theremaining car body are bridged bymeans of the ground lead.5E60 Voltage Supply and Bus Systems
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