Electric controller unit, function - GF27.19-P-5104-02N

Transmission 722.9 in model 171.4, 203, 209, 211, 215, 219, 220, 230, 463.303/340/341 

Fig 1: Electric Controller Unit Function Chart

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function 

In the electric controller unit (VGS) (Y3/8) signals from the fully integrated transmission control (VGS) control unit (Y3/8n4) are converted into hydraulic functions. The following electrical components supply input signals to the fully integrated transmission control (VGS) control unit (Y3/8n4):

• Turbine speed sensor (VGS) (Y3/8n1)
• Internal speed sensor (VGS) (Y3/8n2)
• Output speed sensor (VGS) (Y3/8n3)
• Transmission oil temperature sensor (VGS) (Y3/8s2) integrated into the fully integrated transmission control (VGS) control unit (Y3/8n4)
• Selection range sensor (VGS) (Y3/8s1)

The control solenoid valves listed are actuated by the fully integrated transmission control (VGS) control unit (Y3/8n4) and trigger the hydraulic functions:

• Working pressure control solenoid valve (VGS) (Y3/8y1)
• Clutch control solenoid valve K1 (VGS) (Y3/8y2)
• Clutch control solenoid valve K2 (VGS) (Y3/8y3)
• Clutch control solenoid valve K3 (VGS) (Y3/8y4)
• Brake control solenoid valve B1 (VGS) (Y3/8y5)
• Brake control solenoid valve B2 (VGS) (Y3/8y6)
• Brake control solenoid valve B3 (VGS) (Y3/8y7)
• Torque converter lockup clutch control solenoid valve (VGS) (Y3/8y8)