Transmission overload protection, function - GF07.61-P-4026M

ENGINE 275.950 in MODEL 215, 220

ENGINE 275.951 in MODEL 230 up to Model Year 8

ENGINE 275.953 in MODEL 216, 221 up to Model Year 8

ENGINE 275.954 in MODEL 230 up to Model Year 8

ENGINE 275.980 in MODEL 215, 220

ENGINE 275.981 in MODEL 230 up to Model Year 8

ENGINE 275.982 in MODEL 216, 221 up to Model Year 8

ENGINE 285.950 in MODEL 240

ENGINE 285.980 in MODEL 240

Fig 1: Identifying Transmission Overload Protection Function Diagram

Courtesy of MERCEDES-BENZ USA

This function protects the shift elements of the automatic transmission from thermal overload during load changes in the upper engine speed range.

By brief retardation of the ignition and closing of the throttle valve during shift operations, the engine torque is reduced. For this purpose, the ME-SFI control unit is supplied with a signal from the transmission control unit via the CAN databus.

ME-SFI control unit, location/task/design/ function		GF07.61-P-5000M
Crankshaft position sensor, location/task/ design/function		GF07.04-P-4116M
Throttle valve actuator, location/task/design/ function		GF30.22-P-4101M
Accelerator pedal sensor, location/task/ design/function		GF30.20-P-4010M
ETC control unit, location/task	Selector lever position information P/N and drive position engaged. Transmission 722.6	GF27.19-P-4012G
ECI ignition system, function		GF15.15-P-3000M