It has been previously stated within this thread, that by way of practical experiment:-
“Unplugging the connector at the trans makes a constant 270 line. With the resistor in place, throttle opening makes no difference on line pressure. It won't leave 75 psi, even with the tps Removed and manually rotated.”
There is but one duty cycle adjusting line pressure via the direct circuit.
Solenoid valve “A” is normally closed. I have one in my hand.
A minimum of nine volts is required to open the valve against the included spring pressure and it closes at less than three volts.
Nate, Refer my second PM in reply to yours, for full and correct details.
