BMW 3 Owners & Service Manuals

BMW 3: Connections

BMW 3 Series G20 (2018-2026) Training manual / Electrical Machine Electronics / 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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 Tire identification marks

Tire size 245/45 R 18 96 Y 245: nominal width in mm 45: aspect ratio in % R: radial tire code 18: rim diameter in inches 96: load rating, not for ZR tires Y: speed rating, before the R on ZR tires Maximum tire load Maximum tire load is the maximum permissible weight for which the tire is approved.

 Airbags

Front airbag, driver Front airbag, front passenger Head airbag Side airbag Knee airbag Front airbags Front airbags help protect the driver and the front passenger by responding to frontal impacts in which safety belts alone would not provide adequate protection. Side airbag In the event of a

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