The control of the oil pressure during the lock-up clutch is completed by means of two valves: the relay valve and also the sign valve. In this sort of arrangement the signal valve controls the pressure on one facet from the relay valve, which controls the pressure during the lock-up https://torque-converter-clutch55296.bligblogging.com/34875426/new-step-by-step-map-for-torque-converter-clutch