The control of the oil pressure in the lock-up clutch is finished by way of two valves: the relay valve and also the sign valve. In this sort of arrangement the sign valve controls the force on 1 facet in the relay valve, which controls the force in the lock-up https://torque-converter-clutch54285.anchor-blog.com/14563774/considerations-to-know-about-torque-converter-clutch