The control of the oil stress inside the lock-up clutch is done by two valves: the relay valve along with the signal valve. In this sort of arrangement the sign valve controls the strain on one particular side on the relay valve, which controls the pressure while in the lock-up https://torque-converter-clutch31851.theobloggers.com/40514199/new-step-by-step-map-for-torque-converter-clutch