宝马E87 车载网络学员培训手册（英文）.pdf

Participant's Manual
E87 Vehicle Electrical System
BMW Service
The information contained in this participant's manual is intended solely for the participants of
this seminar run by BMW Aftersales Training.
Refer to the latest relevant "BMW Service" information for any changes/supplements to the
Technical Data.
Information status: April 2004
******@
© 2004 BMW AG
Aftersales Training, München, Germany.
Reprints of this manual or its parts require the written approval of BMW AG,
München.
Participant's Manual
E87 Vehicle Electrical System
Bus systems now also in the 1Series with
the
MOST bus
Power supply with junction box as central
unit
Energy management for effective control
in the energy balance in the vehicle
Content
Bus systems
Introduction 1
Topics concerning the vehicle systems
network 1
System overview 3
Bus overview 3
ponents 7
work of the BMW 1 Series 7
Functions 13
Features of the MOST bus 13
Service information 15
5
Introduction
Vehicle electrical system
Topics concerning the vehicle work
Bus systems
The vehicle work of the BMW 1 The MOST bus is unique in this market
Series represents the technological basis for segment and is therefore described once
further BMW models. The bus systems of the again in greater pared to the other
BMW 1 Series stem from various BMW bus systems.
models and are therefore already known.
Power supply
Compared to the predecessor models various
changes have been made to the power supply
system of the BMW 1 Series. As usual, the
main power distribution boxes are
modated in the partment,
in the vehicle interior behind the glove
compartment and in the partment.
The most significant change has been
implemented in the vehicle interior. The power
distribution box behind the glove
compartment is now known as the junction
box. The relays and fuses necessary for the
power supply to the various electric loads are
integrated in this junction box. In addition, the
junction bo