The Charge of the oil pressure while in the lock-up clutch is completed through two valves: the relay valve along with the signal valve. In this type of arrangement the signal valve controls the pressure on 1 side of your relay valve, which controls the strain within the lock-up clutch. https://torque-converter-clutch53950.diowebhost.com/89232855/not-known-factual-statements-about-torque-converter-clutch