Acura 3.5 RL Manual page 495

Position
The line pressure (1) flows to the manual valve, the modulator valve, the line pressure control valve and the throttle valve.
The line pressure (1) becomes the modulator pressure (6) at the modulator valve, the line pressure (4) and the 1st-hold
clutch pressure (70) at the manual valve. The modulator pressure (6) does not flow to each shift valve because shift
solenoid valves A and B are turned ON by the PCM. The line pressure (4) passes through the 1-2 shift valve and the 2-3
shift valve, then changes to the 2nd clutch pressure (20) at the orifice. The 2nd clutch pressure (20) is applied to the 2nd
clutch, and the 2nd clutch is engaged. The 1st-hold clutch pressure (70) passes through the 1-2 shift valve, then goes to
the 1st-hold clutch. The 1st-hold clutch is engaged. Power is transmitted only during deceleration through the 1st-hold
clutch.
NOTE:
• When used, "left" or "right" indicates direction on the hydraulic circuit.
• The hydraulic circuit is for '96 - '98 models. On '99 - 01 models, the 2nd accumulator is different.