(Component Description For Automatic Transmission Oil Auxiliary Oil Pump Control Unit - GF27.19-P-4031AIA)

Transmission 722.930 in model 205 

Courtesy of MERCEDES-BENZ USA

Location 

The auxiliary oil pump transmission oil control unit is integrated into the electric auxiliary oil pump.

Task 

The automatic transmission fluid auxiliary oil pump control unit controls the electric auxiliary oil pump. When the internal combustion engine is stopped, the electric auxiliary oil pump takes over the oil supply of the control and actuator part of the transmission.

Input and output signals 

The automatic transmission fluid auxiliary oil pump control unit connected over the drive CAN (CAN C1) to the fully integrated transmission control unit (Y3/8n4) and exchanges data with it.

Evaluation of input factors 

The read in input factors are evaluated by the integrated microprocessor and the electric auxiliary oil pump is actuated.