Gearbox hydraulic pressure
sender G270
The hydraulic pressure sender is integrated into
the mechatronic unit's hydraulic oil circuit.
It is designed as a diaphragm pressure sender.
Further information on the hydraulic
pressure sender can be found
in self-study programme 308
"The Direct Shift Gearbox 02E".
lk
G270
S390_075
Signal use
Effects of signal failure
The control unit uses the signal to control the motor
for the hydraulic pump V401.
In the event that the signal fails, the motor for
hydraulic pump runs continuously.
The hydraulic pressure is determined by the pressure
control valve.
At a hydraulic oil pressure of approx. 60 bar, the
motor is shut off according to the pressure sender
signal, and is switched on again at approx. 40 bar.
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