Impreza RS Coupe AWD F4-2.5L SOHC (1999)
In other words, line pressure decreases to match the selected shift position, minimizing shifting shock.
2. Electronic Control Of Clutch Oil Pressure In Summary
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Solenoids activate through the TCM which receives various control signals (throttle signal, etc.)
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Control signals are converted into line pressure duty pressure, which is transmitted to the pressure modifier valve.
G: Shift Pattern Select Control
Shift pattern is selectable automatically between a normal pattern suitable for ordinary economy running and a power pattern suitable for climbing
uphill or rapid acceleration.
