Transmission control
Automated manual transmission
55
Introduction of the smart fortwo, Model Series 451
Transmission rpm sensor (L2)
Location
The transmission rpm sensor is mounted to the
transmission housing.
Task
The rpm sensor determines the rotational speed of
the input shaft. The recorded speeds of the crank-
shaft and input shaft are used to monitor the clutch
operation. The speeds of the input shaft and the
drive wheels are used to determine the actual gear
engaged.
The diagram illustrates the oscilloscope picture of
an rpm sensor.
P26.19-2104-00
1 Input shaft
L2 Transmission rpm sensor
SN_Typ 451_us.book Seite 55 Freitag, 30. November 2007 1:56 13
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