Honda Acura NSX 1991 Service Manual page 401

In D position, the optimum gear is automatically selected from the gear ratios of 1 st, 2nd, 3rd and 4th speeds, according
to conditions such as the balance between throttle opening (engine load) and vehicle speed.
Hydraulic pressure is applied to the 1st clutch, which rotates together with the mainshaft, and the mainshaft 1st
1 .
gear rotates.
2. Power is transmitted to the countershaft 1st gear, and drives the countershaft via the one-way clutch.
3. Power is transmitted to the final drive gear and drives the final driven gear.
NOTE: In the D position, hydraulic pressure is not applied to the Ist-hold clutch.
ONE-WAY CLUTCH
COUNTERSHAFT
MAINSHAFT IST GEAR
\
TORQUE CONVERTER
COUNTERSHAFT
FINAL DRIVEN GEAR
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