ME-SFI fuel pump actuation, function - GF07.61-P-3012V

ENGINE 272.920 in MODEL 203 up to Model Year 8

ENGINE 272.922 in MODEL 211

ENGINE 272.940 in MODEL 203 up to Model Year 8

ENGINE 272.941 in MODEL 203 up to Model Year 8

ENGINE 272.942 in MODEL 171 up to Model Year 8

ENGINE 272.943 in MODEL 211, 219

ENGINE 272.944 in MODEL 211

ENGINE 272.945 in MODEL 251 up to Model Year 8

ENGINE 272.946 in MODEL 221 up to Model Year 8

ENGINE 272.960 in MODEL 203 up to Model Year 8

ENGINE 272.963 in MODEL 171 up to Model Year 8

ENGINE 272.964 in MODEL 211, 219

ENGINE 272.965 in MODEL 221 up to Model Year 8

ENGINE 272.966 in MODEL 230 up to Model Year 8

ENGINE 272.967 in MODEL 164, 251 up to Model Year 8

ENGINE 272.970 in MODEL 203 up to Model Year 8

ENGINE 272.972 in MODEL 211

ENGINE 272.975 in MODEL 221 up to Model Year 8

ENGINE 273.922 in MODEL 221 up to Model Year 8

ENGINE 273.923 in MODEL 164 up to Model Year 8

ENGINE 273.924 in MODEL 221 up to Model Year 8

ENGINE 273.960 in MODEL 211, 219

ENGINE 273.961 in MODEL 216, 221 up to Model Year 8

ENGINE 273.962 in MODEL 211

ENGINE 273.963 in MODEL 164, 251 up to Model Year 8

ENGINE 273.965 in MODEL 230 up to Model Year 8

ENGINE 273.967 in MODEL 209

ENGINE 273.968 in MODEL 221 up to Model Year 8

ENGINE 272.940 in MODEL 209

ENGINE 272.960 in MODEL 209

Shown on engine 272 in model171

Fig 1: ME-SFI Fuel Pump Actuation Function Diagram

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The fuel pump is actuated over the fuel pump relay by a ground signal from the ME-SFI [ME] control unit.

If the power contact of the relay is closed, the in tank fuel pump control unit is connected via "terminal 87" with "terminal 30" (B+). Terminal 30 is protected by a 20 A fuse.

If the fuel pump does not run, first check the voltage supply to the ME-SFI [ME] control unit, then the fuel pump fuse and the fuel pump line terminals.

Fuel pump actuation has the following tasks:

The fuel pump is actuated for complete filling for "ignition ON" for about 5 seconds. The engine must be started before the fuel pump is actuated again. In order to achieve short starting times, ensuring full fuel flow is required, in particular following long shutoff times.
In order to start the engine the fuel pump is actuated for a recognized starter recognition (terminal 50 Signal).
For a running engine the fuel pump is actuated by the recognized engine speed signal.
In the case of a detected front crash actuation of the fuel pump is interrupted.

Component description for the fuel injection valves		GF07.03-P-6010V
Component description for the crankshaft Hall sensor		GF07.04-P-6220V
Component description for the fuel distribution rail		GF07.61-P-6020V
Component description for the ME-SFI [ME] control unit		GF07.61-P-6000V
Component description for the fuel tank	Model 171	GF47.10-P-2000VA
	Model 211, 219, 216, 221 Model 203, 209 with engine 272.960/970	GF47.10-P-2000VB
	Model 164.1, 251	GF47.10-P-2000VC
	Model 203, 209 with engine 272.920/940/941	GF47.10-P-2000VD
	Model 230	GF47.10-P-2000VF
Component description for the fuel pump		GF47.20-P-2000V
Component description for the fuel filter with fuel pressure regulator	Model 171	GF47.20-P-2110V
	Model 211, 219, 164, 251, 216, 221 Model 203, 209 with engine 272.960/970	GF47.20-P-2110VB
	Model 203, 209 with engine 272.920/940/941 Model 230	GF47.20-P-2110VC
Component description for the fuel pump relay		GF47.20-P-2010V