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SOLENOID VALVE FUNCTION

BHE051321101T05

• All solenoid valves have superior responsiveness to hydraulic control.

• The solenoids have the following functions.

1 | Shift solenoid C
2 | Shift solenoid F
3 | Pressure control solenoid
4 | TCC solenoid
5 | Shift solenoid B
6 | Shift solenoid A

Function chart

Solenoid | Type | Characteristics | Function
--- | --- | --- | ---
Pressure control solenoid | ON/OFF | Normal high (Supplies solenoid pressure to pressure control valve) | Set high or low line pressure depending on whether solenoid is energized or de-energized
Shift solenoid A | Repeats ON and OFF at 50 Hz (20 ms cycle); duty cycle type | Normal high (Supplies solenoid pressure to amplifier valve) | Controls supply and drainage of solenoid pressure, according to change in on-time ratio (0-100%) for one cycle | Controls amplifier valve, regulates low clutch pressure
Shift solenoid B | Controls amplifier valve, regulates 2-4 brake pressure
Shift solenoid C | Controls amplifier valve, regulates high clutch pressure
Shift solenoid F | Controls amplifier valve, regulates low and reverse brake pressure
TCC solenoid | Normal low (Drains solenoid pressure supplied to amplifier valve) | Controls TCC engagement and disengagement