Honda Acura NSX 1991 Service Manual page 420

Description
Hydraulic Flow (cont'd)
3 Position
The line pressure (1) becomes the modulator pressure (6) as it passes the modulator valve.
Also, the modulator pressure (6) is supplied to the 1-2 shift valve and 2-3 shift valve, and they are moved to the left
side because the shift control solenoid A is turned ON and B is OFF by the A/T control unit.
The line pressure (4) becomes the clutch pressure control (5) and the 3rd clutch pressure (31).
Then it goes to the 3rd clutch. The 3rd clutch is engaged.
The line pressure (4) also flows to the throttle valve and line pressure (1) flows to the 1st clutch. However no power
is transmitted by means of the one-way clutch as in 2nd speed.
NOTE: When used, "left" or "right" indicates direction on the flow chart.
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