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Position 4. 4th Gear As the speed of the vehicle reaches the prescribed value, shift solenoid valve A is turned OFF by means of the PCM. Shift solenoid valve B remains OFF. The modulator pressure (6A) flows to the right end of the 3-4 shift valve and the valve spring. The 3-4 shift valve is moved to the left side by modulator pressure (6B). The 3-4 shift valve covers the port leading to the 3rd clutch and uncovers to the 4th clutch as this valve is moved to the left side. The line pressure (5') from the 2-3 shift valve becomes the 4th clutch pressure (40) at the 3-4 shift valve. The 4th clutch pressure (40) is Hydraulic pressure also flows to the 1st clutch and 2nd clutch. However, no power is transmitted because of the one- way clutches. NOTE: THROTTLE VALVE Main Menu Table of Contents |