The torque converter clutch solenoid is always energised (caught on) which translates into the torque converter getting always locked. As it is possible to see, there in no direct (mechanical) link involving the impeller and the turbine. The facility concerning the engine and transmission is transferred through the fluid in https://torqueconverterclutch10741.bloguetechno.com/the-fact-about-torque-converter-clutch-that-no-one-is-suggesting-69098869