Honda Prelude 1993 Service Manual page 482

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Hydraulic Flow (cont'd)

I R lPolhlon

Th; tlow of fluid through th6 torque converter circuit is the same ss in the I N I position. The fluid {1) trom the oil pump flows

through th€ manualvatve and becomes line prsssure (3). lt then flows throug-h the 1-2 shift valv€ to the servo valve {3), causing

the shift tork shsft to be moved in the rovorse direction,

Undeq this condition, the shift controlsolenoid valve A is turned on whereas the valve B is turned off 8s in 3rd speed inLqllor

I D3 I position. As a resuh, tho 1-2 shift valve is also moved to th8 lsft. The Jluid (3') will flow through the seryo valve and

m:Ei[alvalve to the 4th clutch; power is transmitted through the 4th clutch,

Rev6rso Inhibito!-.lE=ontrol

When the I R I position is selected while the vehicle is moving forward at a speed over 6 mph (10 km/h), the TCM

outputslst;i6;al (A: OFF, B; ON), and the 1-2shift valve is moved to the right side. Th6 line pressure (3) is intercepted by

th€ 1.2 shift vave; consequ€ntly, pow6r ia not transmitted as the 4th clutch and servo vatue are not operated.

When used, "left" or

"right" indicstes direction on the tlowchart.

Troubleshooting