The ME-SFI safety fuel shutoff function - GF07.61-P-3018V
ENGINE 273.961 in MODEL 216, 221 up to Model Year 8
Shown on engine 272.963 in model 171
The safety fuel shutoff has the following tasks:
- In the event of mechanical faults at the throttle valve actuator, the engine speed is limited to approx. 1400 to 1800 RPM by cutting in and out the fuel injection valves (strong surging engine running).
- If the TNA engine speed signal is missing, interrupts fuel pump actuation.
- When the airbags are activated (head-on collision), shuts off the fuel pump. To do this, the ME control unit receive a crash signal from the airbag control unit. The fuel valves are actuated briefly to reduce the pressure in the fuel system.
| Component description for the ME-SFI [ME] control unit | GF07.61-P-6000V |
| Component description for the crankshaft Hall sensor | GF07.04-P-6220V |
| Component description for the camshaft Hall sensor | GF07.04-P-6020V |
| ME-SFI fuel pump actuation function | GF07.61-P-3012V |
| ME engine speed signal function | GF07.61-P-3017V |
| ME-SFI electronic accelerator function | GF30.20-P-3012V |
| Electronic accelerator pedal emergency running mode function | GF30.20-P-4026V |