ME-SFI limiting maximum vehicle speed, function - GF07.61-P-3019MIS

ENGINE 272.9 (except 272.974) in MODEL 221.0 /1 (except 221.095 /195) as of model year 2009/AEJ 08

ENGINE 273.9 in MODEL 216.3, 221.0 /1 as of model year 2009/ AEJ 08

Function requirements for maximum speed limit, general points

Circuit 87M ON (engine control ON)
Engine running

Maximum speed limit, general points

For vehicles with the corresponding engine power, the ME-SFI [ME] control unit (N3/10) limits the maximum speed to 250 km/h.

The ME-SFI [ME] control unit receives the vehicle speed information over the chassis CAN (CAN E) from the ESP control unit (N47-5).

Maximum speed limit function sequence

If 250 km/h is reached, the ME-SFI [ME] control unit reduces the opening angle of the throttle valve (throttle valve actuator (M16/6)) and the injection time of the fuel injection valves (Y62).

These measures ensure simple maximum speed limitation the reduction of the engine torque.

	Electrical function schematic, maximum speed limit	Model 216		PE07.61-P-2779-97CAB
	Component description for ME-SFI [ME] control unit	N3/10	Engine 273	GF07.61-P-6000MLS