Legacy Sport Utility LTD AWD F4-2.5L DOHC (1999)
When locking up, the clutch is set in the half-engaged state beforehand. After this, the lock-up operating pressure is gradually increased to achieve
smooth locking up.
E: LINE-PRESSURE CONTROL
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The oil pump delivery pressure (line pressure) is regulated to the constant pilot pressure by the pilot valve.
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The pilot pressure applied to the pressure modifier valve is regulated by the line pressure controlling duty solenoid A (line pressure) and changed
into the pressure modifier pressure.
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The pressure modifier valve is an auxiliary valve for the pressure regulator valve, and it creates a signal pressure (pressure modifier pressure) for
regulating the line pressure to an optimum pressure corresponding to the driving conditions.
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This pressure modifier pressure is applied to the pressure regulator valve to control the oil pump delivery pressure.
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The pressure modifier pressure regulated by the pressure modifier valve is smoothed by the pressure modifier accumulator and pulsation in the line
pressure is eliminated.
F: LINE-PRESSURE SHIFTING CONTROL
1. FUNCTION