GF07.61-P-3017AM ME Engine Speed Signal, Function

GF07.61-P-3017AM ME Engine Speed Signal, Function
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





Signal assignment

1 Crankshaft angle
2 Cylinder ignition TDC
3 Signal of crankshaft position sensor
4 Camshaft Hall sensor signal
5 Engine speed signal "TNA"

a Recognition of top dead center for cylinder 1 or 6

Based on the signals from the crankshaft position sensor (L5) the short circuit-proof engine speed signal TNA is generated in the ME control unit (N3/10) and forwarded to other control units via the CAN data bus.

When the crankshaft is rotating, an alternating voltage is generated in the crankshaft position sensor by the teeth of the driven plate. During this operation, each tooth generates an alternating voltage signal. No voltage is generated as a result of the gap created by 2 missing teeth. The ME-SFI [ME] control unit detects the TDC position of cylinder 1 or 6 with the 2nd negative flank after the gap.

The engine speed signal TNA is a square-wave signal with a constant on/off ratio of 6 pulses per engine revolution and a maximum current of approx. 20 mA.

If no signal is received from the crankshaft position sensor, the signal from the camshaft Hall sensor is used as a substitute (for emergency mode).B6/1