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A/T CONTROL SYSTEM AT-35 D E F G H I J K L M A B AT Engine Brake Control NCS000BK ● The forward one-way clutch transmits the drive force from the engine to the rear wheels. But the reverse ● The operation of the low coast brake solenoid switches the low coast brake switching valve and controls Control Valve NCS000BL FUNCTION OF CONTROL VALVE SCIA1520E Name Function Torque converter regulator valve In order to prevent the pressure supplied to the torque converter from being excessive, Pressure regulator valve Adjusts the oil discharged from the oil pump to the optimum pressure (line pressure) for Front brake control valve When the front brake is coupled, adjusts the line pressure to the optimum pressure Accumulator control valve Adjusts the pressure (accumulator control pressure) acting on the accumulator piston Pilot valve A Adjusts the line pressure and produces the constant pressure (pilot pressure) required Pilot valve B Adjusts the line pressure and produces the constant pressure (pilot pressure) required Low coast brake switching valve During engine braking, supplies the line pressure to the low coast brake reducing valve. Low coast brake reducing valve When the low coast brake is coupled, adjusts the line pressure to the optimum pressure N-R accumulator Produces the stabilizing pressure for when N-R is selected. Direct clutch piston switching valve Operates in 4th gear and switches the direct clutch coupling capacity. High and low reverse clutch control valve When the high and low reverse clutch is coupled, adjusts the line pressure to the opti- |