BMW 3: Connections
![Design](images/books/3259/index.42.png)
Connections, electrical machine
- Transmission bell housing
- Temperature sensor
- Coolant ducts
- Connection for coolant (transmission oil)
- Electrical connection, rotor position sensor
- High-voltage connection
There are four connections of the electrical machine on the housing of the
automatic transmission for
the following components:
- Temperature sensor
- Cooling (by transmission oil)
- Rotor position sensor
- High-voltage cables
High-voltage connection
![Design](images/books/3259/index.43.png)
High-voltage connection, electrical machine
- High-voltage connection
- High-voltage connector
Electrical energy is fed to the coils of the electrical machine via the
high-voltage connection. The high-
voltage connection connects the Electrical Machine Electronics to the electrical
machine via a three-
phase, shielded high-voltage cable.
The high-voltage connectors are screwed on to the Electrical Machine Electronics
and the electrical
machine.
![](images/books/3259/index.47.png)
High-voltage cables must not be repaired. In the event of damage, the
line must always be replaced!
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Sensors, electrical machine
Temperature sensor
Rotor of the rotor position sensor
Stator of the rotor position sensor
So that the voltages for the coils in the stator can be correctly calculated
The G20 PHEV is a Full-Hybrid Generation 4.0 vehicle. In contrast to
generation 2 and 3 hybrid
vehicles, electrical driving is possible in the G20 PHEV at much higher speeds
and with a higher range.
To guarantee the thermal operating safety of the electrical machine in every
situation, it is cooled with
coolant in the G20 PHEV. For this, the electrical machine is integrated in the
coolant
SEE MORE:
The isolation monitoring determines whether the isolation resistance between
active high-voltage
components (e.g. high-voltage cables) and ground is above or below a required
minimum value. If
the isolation resistance falls below the minimum value, the danger exists that
the vehicle parts will be
Concept
Contact the BMW Group Roadside Assistance if
assistance is needed in the event of a breakdown.
General information
In the event of a breakdown, data on the vehicle's
condition is transmitted to the BMW Roadside
Assistance.
There are various ways of contacting BMW
Roadside Assistance.
Via