Possible fault causes
- Loose contact or corrosion on connectors or lines
- Open circuit in control line for DME (DFI) control unit → Fuel pump control unit
- Faulty power supply or ground supply for fuel pump control unit
- Fuel pump control unit faulty
- After work carried out previously
:
- Connectors interchanged (fuel pump control unit electric fuel pump)
The connector with 2 cables must be connected to the fuel pump flange, while the connector with 5 cables must be connected to the fuel pump control unit!
- Loose contact or corrosion on connectors or lines
- Open circuit in control line for DME (DFI) control unit → Fuel pump control unit
- Faulty power supply or ground supply for fuel pump control unit
- Fuel pump control unit faulty