Honda Acura NSX 1991 Service Manual page 421

D Position
1 . 1st speed
The flow of fluid through the torque converter is the same as in N position.
The line pressure (1) becomes the line pressure (4) and it becomes the 1st clutch pressure (IO).
The 1 st clutch pressure is applied to the 1 st clutch and 1 st accumulator, consequently the vehicle will move as the
engine power is transmitted.
The line pressure (1) becomes the modulator pressure (6) by the modulator valve and travels to each shift valve.
The 1-2 shift valve is moved to the right side because the shift control solenoid valve A is turned OFF and 6 is ON
by the A/T control unit.
The line pressure (I) also flows to the throttle valve.
NOTE: When used, "left" or "right " indicates direction on the flow chart.
14-33