Control valve pressure, function - GF27.60-P-3017AHS

TRANSMISSION 722.9 in MODEL 216.3 as of model year 2009 / YoM 08 

TRANSMISSION 722.9 in MODEL 216.3 (except 216.374) as of model year 2011 /YoM 10 model refinement package 

TRANSMISSION 722.9 in MODEL 221.0 as of model year 2009 / YoM 08 

TRANSMISSION 722.9 in MODEL 221.0 (except 221.095) 

TRANSMISSION 722.9 in MODEL 221.0 (except 221.074) as of model year 2011 /YoM 10 

TRANSMISSION 722.9 in MODEL 221.1 as of model year 2009 / YoM 08 

TRANSMISSION 722.9 in MODEL 221.1 (except 221.195) 

TRANSMISSION 722.9 in MODEL 221.1 (except 221.174) as of model year 2011 /YoM 10 

Function requirements for control valve pressure, general 

• Circuit 87 ON
• Circuit 61 (engine running)

Control valve pressure, general 

The control valve supply pressure is drawn from the working pressure and is limited to a maximum pressure of 8 bar.

2 supply pressure regulating valves are used.

• Supply pressure 1 regulating valve 
• Supply pressure 2 regulating valve 

Supply pressure 1 regulating valve 

Supply pressure regulating valve 1 supplies the following control solenoid valves:

• Working pressure control solenoid valve (VGS) (Y3/8y1)
• Clutch K2 control solenoid valve (VGS) (Y3/8y3)
• Brake B2 control solenoid valve (VGS) (Y3/8y6)
• Torque converter lockup clutch control solenoid valve (VGS) (Y3/8y8)

Supply pressure 2 regulating valve 

Supply pressure regulating valve 2 supplies the following control solenoid valves:

• Clutch K1 control solenoid valve (VGS) (Y3/8y2)
• Clutch K3 control solenoid valve (VGS) (Y3/8y4)
• Brake B1 control solenoid valve (VGS) (Y3/8y5)
• Brake B3 control solenoid valve (VGS) (Y3/8y7)

By using two supply pressure regulating valves, the control solenoid valve groups are isolated from each other and the control solenoid valve groups do not influence each other during any shift operation.

Overview of system components for automatic transmission (AT)

GF27.10-P-9992AHS