5 Series E61 523i (N52) TOUR
>from 09/2005:
The appropriate terminal is activated with the START/STOP button
•
The CAS receives the correct information and transmits this to the DME / DDE via the K-CAN
•
The electronic immobiliser (EWS) actuates the starter relay
-
Starter motor
>up to 09/2005:
Battery voltage is fed to the starter motor via the starter relay to start the engine when the ignition starter switch
is turned to position 2.
>from 09/2005
The START/STOP button can be used to switch the terminals in sequence (0, R, 15, R, 0).
-
Alternator
When the engine is running, the alternator generates a variable charge voltage for battery charging. The power
management system influences the variable charge voltage, depending on temperature and current, by causing
the DME or DDE to increase the engine speed.
-
Earth point on lightweight aluminium front end
The earth point on the lightweight aluminium front end (GRAV) is the place where steel body has its earth
connection.
[more ...]
System functions
The power supply system comprises the following functions:
-
Electric energy management
-
Power management
-
Variable charge voltage
-
Idle-speed increase
-
Reduction of load peaks
-
Consumer shutdown
-
Off-load current monitoring
-
Terminal 30g relay
Electric energy management
The electric energy management monitors and controls the vehicle's energy requirements. The monitoring and
control functions are performed by the interconnection of various components. The energy management links
functions, signals and maps for generating and outputting control signals.
-
Components of the energy management system:
•
Battery
•
Intelligent battery sensor (IBS)
•
Bit-serial data interface (BSD)
•
DME or DDE
•
Engine
•
Power management (microcontroller)
•
Micro-power module (MPM)
From 09/2005, MPM function is integrated into the body-gateway module (KGM)
SBT Power supply E60, E61, E63, E64
BMW AG - TIS
06.02.2013 01:02
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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