Acura NSX 1997 Service Manual page 380

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As the engine turns, the ATF pump also starts to operate. The ATF is drawn from (99) and discharged into (1). Then, ATF
flowing from the ATF pump becomes the line pressure (1). The line pressure (1) is regulated by the regulator valve. The
torque converter inlet pressure (92) enters (94) of torque converter through the orifice and discharges into (90).
The torque converter check valve prevents the torque converter pressure from rising.
Under this condition, the hydraulic pressure is not applied to the clutches.