ME-SFI electronic accelerator, function - GF30.20-P-3012AM

ENGINE 113.990 in MODEL 211, 219

ENGINE 113.991 in MODEL 215, 220

ENGINE 113.992 in MODEL 230 up to Model Year 2008

ENGINE 113.993 in MODEL 463 up to 31.5.12

ENGINE 113.995 in MODEL 230 up to Model Year 2008

Fig 1: Identifying ME-SFI Electronic Accelerator Function Diagram

Courtesy of MERCEDES-BENZ USA

The electronic accelerator function is integrated and controlled in the motor electronics control unit depending on the driver input and the operating condition, the opening angle of the throttle valve.

The position of the accelerator pedal and the speed at which the position of the accelerator pedal changes are transmitted to the sensor located on the accelerator pedal mechanically.

The Hall sensor in the accelerator pedal sensor sends an appropriate voltage signal to the ME control unit. The ME control unit analyzes the voltage signal and, depending on the performance map, activates the throttle valve actuator.

The opening angle of the throttle valve is altered in the throttle valve actuator in line with the driver input and the operating conditions.

An actual value potentiometer in the throttle valve actuator reports the current position of the throttle valve to the motor electronics control unit.

A second actual value potentiometer in the throttle valve actuator and a second Hall sensor in the accelerator pedal sensor supply a reference value for a plausibility check by the ME control unit.

Any detected faults are stored in the fault memory and can be read out and deleted using STAR DIAGNOSIS.

Additional functions of the electronic accelerator pedal:

Idle speed control
Cruise control (CC [TPM])
Torque reduction
Emergency running
Data transfer over CAN

Input signals for the electronic accelerator pedal:

Accelerator pedal position
Brake actuation (via the ESP control unit)
Cruise control operation (via the steering column module or the ESP control unit)
Reduction of the engine torque (from ESP control unit)
Drive position (via the ETC [EGS] control unit)

	ME-SFI control unit, location/task/design/function		GF07.61-P-5000AM
	Accelerator pedal sensor, location/task/design/function		GF30.20-P-4010HA
	Throttle valve actuator, location/task/design/function		GF30.22-P-4101AM
	Cruise control push-button switch, location/task/design/function		GF30.30-P-3100AM
	Stop light switch, location/task/design/function		GF42.10-P-4000AM