Honda Prelude 1993 Service Manual page 480

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Hydraulic Flow (cont'd)

The flow of tluid up to the 1-2, 2-3 and 3-4 shift valves is the same as in the 2nd speed. As the speed of the car roaches the

prescribed value, the shift control solenoid valve B is turned oft (shift control solenoid valve A remains on). The 2-3 shift

valve is then moved to the laft, uncovering the oil port leading to the 3rd clutch. Since the 3-4 shitt valve is moved to the

right to cover the oil port to the 4th clutch, the 3rd clutch is turned on.

Fluid tlows by w8y of :

-Line Pressure (41 J 1-2 Shift Valve J 2-3 Shift Valve- 3rd Clutch Pressure (31) J 3-4 Shift Valve (not controlled)

-3rd Clutch Pressure (30) -r 3rd Clutch

The hydraulic pressure also tlows to the 1st clutch, However, no power is transmitted because of the one-way clutch as in

the 2nd sDeed.

When used, "left" or "right" indicates direction on the tlowchart.

Troubleshooting