Gearbox input speed sender 1 G632 and
gearbox input speed sender 2 G612
Both senders are housed in the mechatronic unit.
● Sender G632 scans an impulse wheel, which is
located on drive shaft 1.
● Sender G612 scans a gear on drive shaft 2.
From this signal, the control unit calculates the
speed of drive shaft 2.
From this signal, the control unit calculates the
speed of drive shaft 1.
Both senders are Hall senders.
lk
G632
G612
S390_049
Signal use
Effects of signal failure
The speed signals from drive shafts 1 and 2 are used
by the control unit to control the clutch and to
calculate clutch slip.
If sender G632 fails, gear train half 1 is shut off.
The vehicle can then only be driven in gears 2, 4, 6
and R.
If sender G612 fails, gear train half 2 is shut off.
The vehicle can then only be driven in gears 1, 3, 5
and 7.
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English 