GF27.60-P-3019AHK Torque Converter Lockup Clutch Control Pressure, Function

GF27.60-P-3019AHK Torque Converter Lockup Clutch Control Pressure, Function
- TRANSMISSION 722.904 /906 /907 /999 in MODEL 171.4 as of Model Year 09 /modification year 08 model refinement package

Function requirements for torque converter lock-up clutch control pressure, general

^ Circuit 87 ON
^ Circuit 61 (engine running)

Torque converter lock-up clutch control pressure, general

The torque converter lockup clutch is operated at specified slip speeds. In order to make this possible, the variable control pressure has to be applied to the torque converter lockup clutch regulating valve.

The torque converter lock-up clutch control pressure is adapted to the respective operating condition via the torque converter lockup clutch control solenoid valve (VGS) (Y3/8y8) which is actuated by the fully integrated transmission control (VGS) control unit (Y3/8n4).