BMW 3: High-voltage connections
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
electrical heating are on the convenience charging electronics.

The following simplified wiring diagram shows the high-voltage connections
between the Electrical
Machine Electronics and the other high-voltage components.

High-voltage connections of the Electrical Machine Electronics
- Electrical heating
- Electric motor
- High-voltage battery unit
- 12 V battery
- Charging socket
- Electric A/C compressor
- Unidirectional AC/DC converter
- Convenience charging electronics
- Electrical Machine Electronics
- Bidirectional DC/AC converter
- Unidirectional DC/DC converter
- Anti-overload current guard (90 A)
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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
Bridge for high-voltage interlock loop
Before the high-voltage connector can be
disconnected, the bridge for the high-voltage
interlock loop must first be removed. The bridge
closes the circuit
The following figures show the approach for releasing the round high-voltage
connector, as used
for example on the high-voltage cable from the Electrical Machine Electronics to
the convenience
charg
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Concept
The system assists the driver in keeping the vehicle
within the lane. For this purpose, the system
executes supporting steering movements,
for instance when driving in a curve.
General information
The system determines the position of the lane
markings and the vehicle driving ahead using fiv
Compatible device, with
Bluetooth interface.
The vehicle key is in the vehicle.
The device is ready for operation.
Bluetooth is switched on in the vehicle and
on the device.
The pairing readiness is displayed on the
Control Display.
Bluetooth presettings, such as visibility, may
be requir