Fan control, function - GF07.61-P-3023M

ENGINE 275.950 in MODEL 215, 220 

ENGINE 275.951 in MODEL 230 

ENGINE 275.953 in MODEL 216, 221 

ENGINE 275.954 in MODEL 230 

ENGINE 275.980 in MODEL 215, 220 

ENGINE 275.981 in MODEL 230 

ENGINE 275.982 in MODEL 216, 221 

ENGINE 285.950 in MODEL 240 

ENGINE 285.980 in MODEL 240 

Illustrated model 215, 220, 230, 240 

The ME-SFI [ME] control unit indirectly actuates the engine and AC electric suction fan with integrated control infinitely.

The fan specified speed is transmitted by the ME-SFI control unit via a pulse width modulated signal (PWM signal).

The on/off ratio is 10 to 90 %.

Meaning:

10% Electric suction fan OFF

20% Electric suction fan "ON", minimum speed

90% Electric suction fan "ON", maximum speed.

If actuation is faulty, the electric suction fan rotates at the maximum rotational speed (fan emergency mode).

The status of the automatic air conditioning is transmitted from the instrument cluster via the CAN databus to the ME-SFI control unit. The fan target speed is dependent on this information and on the coolant temperature.

The suction fan continues running for up to 5 minutes after ignition "OFF" if the coolant temperature, the engine oil temperature or the temperature of the ME-SFI control unit exceeds the specified maximum values.

If the battery voltage drops excessively during this operation, suction fan run-on is suppressed.

Model 230, 240 

If case of SBC undervoltage, the fan speed is limited and a fault code is stored in the ME-SFI control unit.

	ME-SFI control unit, location/task/design/function		GF07.61-P-5000M
	Crankshaft position sensor, location/task/design/function		GF07.04-P-4116M
	Coolant temperature sensor, location/task/design/function		GF07.04-P-5026M