BMW 3: High-voltage cables
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
cable with the orange warning color. An overview of the high-voltage cables used
in the G20 PHEV is
provided here.
G20 PHEV, high-voltage components and high-voltage cables
- Electric Motor Electronics (EME)
- High-voltage battery unit
- Convenience charging electronics (KLE)
- Charging socket
- Electrical heating
- Electric A/C compressor (EKK)
- Electric motor
High-voltage cables must not be repaired. In the event of damage, the
high-voltage cable must be fully
replaced!
Bending radius of a high-voltage cable
- High-voltage cable
- Bending radius must be greater than 70 mm
The high-voltage cables must not be excessively bent or kinked The
bending radius must not be less
than 70 mm Excessive kinking/bending of the high-voltage cable may result in
damage to the cable
shielding and thus to an isolation fault in the high-voltage vehicle electrical
system.
Work on live high-voltage components is expressly prohibited. Prior to
every operation which involves
a high-voltage component, it is essential to disconnect the high-voltage system
from the voltage
supply and to secure it against unauthorized return to service.
- Charging plug is not connected to the vehicle.
- Enter the PARK vehicle condition (e.g. by holding down the media
button of the head unit).
- Wait until the vehicle enters "sleep mode" (identifiable by the
fact that the START-STOP button is
not illuminated).
- Open high-voltage safety connector.
- Secure the high-voltage system against restarting at the
high-voltage service disconnect.
- Activate PAD mode (e.g. by operating the START-STOP button three
times within 0.8 s).
- Wait until the Check Control message "High-voltage system
switched-off" is displayed in the
instrument cluster.
- Enter PARK vehicle condition.
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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
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 i
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Button in the vehicle
Intelligent Safety
Camera
The camera is installed near the interior mirror.
Keep the windshield in front of the interior mirror
clean and clear.
Radar sensors
The radar sensors are located in the front
bumper.
Front side bumper.
Front center bumper.
Keep the radar sensors
Button in the vehicle
Park assistance button
Ultrasound sensors
Ultrasound sensors of the PDC,
for instance in the bumpers.
Functional requirements
Ensure full functionality:
Do not cover sensors, for instance with stickers,
bicycle racks.
Keep the sensors clean and unobstructed.
Switching on/