BMW 3 Owners & Service Manuals

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
Connections of the Electrical Machine Electronics with lines

  1. Connection for potential compensation line
  2. Low-voltage connector
  3. High-voltage cable (DC) to the high-voltage battery unit
  4. High-voltage connection to convenience charging electronics
  5. Output, DC/DC converter -12 V
  6. High-voltage cable (AC) to the electrical machine
  7. Coolant feed line
  8. Coolant return line
  9. Output, DC/DC converter +12 V
  10. Ventilation

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 Low-voltage connections

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

 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

 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 c

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 The right place for children

Safety information Warning Unattended children or animals in the vehicle can cause the vehicle to move and endanger themselves and traffic, for instance due to the following actions: Pressing the Start/Stop button. Releasing the parking brake. Opening and closing the doors or windows. Engaging

 Received destinations

General information Depending on the national-market version, the destinations are automatically stored as received destination and can be applied in the destination guidance, if they were transferred to the vehicle via the BMW Connected app. For example, destinations that were sent from the Concie

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