BMW 3: Connections
The connections at the Electrical Machine Electronics can be divided into
four categories:
- Low-voltage connections
- High-voltage connections
- Connection for potential compensation line
- Connections for coolant lines.

Connections of the Electrical Machine Electronics with lines
- Connection for potential compensation line
- Low-voltage connector
- High-voltage cable (DC) to the high-voltage battery unit
- High-voltage connection to convenience charging electronics
- Output, DC/DC converter -12 V
- High-voltage cable (AC) to the electrical machine
- Coolant feed line
- Coolant return line
- Output, DC/DC converter +12 V
- Ventilation
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In the low-voltage connector at the Electrical Machine Electronics the
following lines and signals are
combined:
Terminal 30 from the hybrid power distribution box
Terminal 30 from the f
At the Electrical Machine Electronics, there is a total of three high-voltage
connections to connect the
lines for other high-voltage components. The connections for the electric A/C
compressor and
The high-voltage cables connect the high-voltage components and are
identified by orange cable
sleeves. The manufacturers of hybrid cars have agreed on a uniform
identification of the high-voltage
c
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Safety information
Warning
If the upper retaining strap is incorrectly used
for the child restraint system, the protective effect
can be reduced. There is a risk of injury.
Make sure that the upper retaining strap does
not run over sharp edges and is not twisted as
it passes the upper anchor.
Warn
Safety information
Warning
High gross weight can overheat the tires, damage
them internally and cause a sudden drop in
tire inflation pressure. Driving characteristics
may be negatively impacted, reducing lane stability,
lengthening the braking distances and
changing the steering response. There is