BMW 3 Owners & Service Manuals

BMW 3: System wiring diagram

BMW 3 Series G20 (2018-2026) Training manual / Drive Components / Fuel supply / System wiring diagram

Fuel supply
G20 PHEV, system wiring diagram for fuel supply

  1. Integrated supply module
  2. Digital Motor Electronics (DME)
  3. Shutoff valve purge air line (only for US version)
  4. Body Domain Controller (BDC)
  5. Fuel filler flap lock
  6. Power distribution box, rear
  7. Fuel pump control electronics
  8. Hybrid pressure refuelling electronic control unit (TFE)
  9. Fuel tank isolation valve (only for US version)
  10. Electric fuel pump
  11. Pressure/Temperature sensor
  12. Fuel tank isolation valve (only for European version)
  13. Fuel tank shutoff valve (only for US version)
  14. Lever sensor for fuel level
  15. Advanced Crash Safety Module (ACSM)
  16. Power window motor, driver's side (supply for LED refuelling button )
  17. Refuelling button
  18. Instrument cluster (KOMBI)
  19. Power distribution box, front left

In the event of a crash, the fuel pump control electronics immediately disconnect the power supply to the fuel pump drive. The fuel pump control electronics receive the information for this from the Advanced Crash Safety Module ACSM.

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