5%20Closed%20Circuit%20Current%20Monitoring, BMW educational info, Dokumentacja

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//-->Table of ContentsClosed Circuit Current MonitoringSubjectPageIntroduction..........................................................................................2Purpose of the System........................................................................3Power Supply Circuit...........................................................................4Power Module.......................................................................................5Inputs..................................................................................................... 8Outputs.................................................................................................. 9Shut Down Protocol............................................................................10Closed-Circuit Current MonitoringNormal Sleep Mode...............................................................................11Storage Mode.......................................................................................14Check Control Messages...................................................................15Workshop HintsClosed-Circuit Current Monitoring.........................................................16Preconditions & General Observations..................................................17Closed-Circuit Current Monitoring Procedure........................................18Diagnosing the Power Module with the DISplus/GT1............................23Battery Replacement Registration.........................................................29Diagnostic Test Plans............................................................................32Review Questions...............................................................................33Closed Circuit Current MonitoringModel: E65 - 745i / E66 - 745LiProduction Date: 11/2001 - E65, 03/2002 - E66Objectives of The ModuleAfter Completing this module, you will be able to:• Explain what the Power Module uses to calculate the optimum charge voltage.• Identify when the battery switch is left in the “OFF” position.• Perform the Battery Replacement Registration after replacing a battery.• Understand a normal Shut Down Protocol and identify a violation.• Identify 2 “visuals” that indicate the vehicle is entering sleep mode.• List the final Closed-Circuit Current draw on a “normal” vehicle.• Explain what Special Tool #90 88 6 612 310 is used for and demonstrate it’s use.2Closed Circuit Current MonitoringPurpose of The SystemThis module describes the technical changes that have been made to the Power Modulerelevant to fault codes and diagnostic service procedures. You should be familiar with thebasic operation covered in the E65 Complete Vehicle course (ST042). Additional informa-tion is now available for:• Closed circuit current monitoring• Check Control messages• Battery replacementThe Power Module ensures that the battery charge level is maintained when the engine isrunning and when the vehicle is at rest. The Power Module is also responsible for main-taining the power supply (in the event of faults in the electrical system) to important vehiclesystems by disconnecting lower priority circuits.Power Module Functions• Optimum charging.• Load-circuit peak reduction.• Shut-down of auxiliary consumercircuits in the event of low voltage.• Closed circuit current monitoring.• Distribution mode.• Automatic electrical system isolation.• Load cutout.• Electronic fuses.••••••••Central battery voltage notification.Rear window defogger output.Interior lighting control.Trunk lid and fuel filler flap control.Data memory storage.Emergency-mode functions.Check Control messages.Diagnosis.System Components• Power Supply circuit• Fuses• Power Module- Electronic battery master switch- High-current sockets- Inputs- Outputs connected to electronic battery master switch- Outputs not connected to electronic battery master switch- Electronic control unit3Closed Circuit Current MonitoringPower Supply CircuitThe power supply for the general electrical system is controlled by the Power Module. Thehigh amperage fuses in the engine compartment, the alternator and the starter motor areconnected directly to the battery and not supplied by the Power Module.24208054Closed Circuit Current MonitoringPower Module - Location and ConstructionThe Power Module on the E65 is located on theright-hand side of the luggage compartment.KT-7741UB1. Cover plate2. Electronics3. Electronic Battery Master switch4. Heat sinkKL 30, KL 30B and KL 30U = High-Current TerminalsKT-8355Electronic Battery Master SwitchThe electronic battery master switch is made up of 4 MOS-FET output stages (S Bat) andconnects the input terminal 30 with the outputs KL 30U and KL 30B on the Power Module.The following functions are controlled by means of the Power Module according to the posi-tion of the battery switch:• Storage mode• Closed circuit current monitoringHigh-Current Terminals (RADSOK)New high-current terminals are used in the E65/E66. The high-current terminals are on theinput terminal 30 and the outputs terminal 30U and terminal 30B. These contacts are capa-ble of carrying current peaks (short term) of 220 A.5Closed Circuit Current Monitoring• Electronic fuses• Automatic electrical system isolation [ Pobierz całość w formacie PDF ]

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