The Charge of the oil strain inside the lock-up clutch is done through two valves: the relay valve as well as the signal valve. In this type of arrangement the signal valve controls the force on 1 aspect on the relay valve, which controls the pressure during the lock-up clutch. https://edwinxbazw.bloginwi.com/67949162/little-known-facts-about-torque-converter-clutch