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Function diagram, information and data exchange
649_108
Information and data exchange
The control unit of the 0D7 gearbox communicates with the vehicle
via FlexRay bus. Since the instructions for the separation clutch
actuator are decided by the engine control unit, a great deal less
information is required for gearbox control purposes. The separa-
tion clutch actuator V606 actuates the separation clutch K0.
In addition to the usual information used by an automatic torque
converter, the automatic gearbox control unit J217 requires
requires the following supplementary data for gearbox control
purposes:
• Speed of e-machine
• System torque at gearbox input shaft
Function diagram of 8-speed automatic gearbox 0D7
Key:
Ground cable
Positive cable
Signal line
LIN bus
Transmitted signal
Received signal
G93 ATF temperatur sensor
G182 Gearbox input speed sender
G195 Gearbox output speed sender
G747 Parking lock sender
J217 Automatic gearbox control unit
J500 Power steering control unit
J533 Data bus diagnostic interface
J539 Brake servo control unit
J623 Engine control unit
N88 Solenoid valve 1
N215 Pressure control valve 1, brake A
N216 Pressure control valve 2, brake B
N217 Pressure control valve 3, clutch C
N218 Pressure control valve 4, clutch D
N233 Pressure control valve 5, clutch E
N371 Pressure control valve 6, converter lockup clutch
N433 Pressure control valve 7, system pressure
N486 Parking lock solenoid
V475 Auxiliary hydraulic pump 1 for gear oil
FlexRay, to J500 and to J539
FlexRay, to J500 and to J539
FlexRay, to J533
FlexRay, to J533
P/N signal, start enable signal to J623
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