Operation CHARM: Car repair manuals for everyone.
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Normal High

Normal High
^ De-energized (OFF) or duty 0%
- Because the output port (solenoid pressure) and the supply port (pilot pressure) connect in the solenoid, the solenoid pressure is supplied to the output port.
^ Energized (ON) or duty 100%
- Because the output port (solenoid pressure) and the drain port connect, solenoid pressure is drained.