I'm not dealing with the VVTI.. I'm Defeating the Lift Sol Circuitry, so it will not toss a Cell at you when something else is driving it.. or in my case, when it not even there!This is close, but not correct.
The VVTl solenoid is driven with square wave 0-10v signals. .
They are Similar Circuits, and use the Same type of Power Supply, but I doubt the Lift sol is Pulsed.. I've not hooked a scope to it .. Have you?.. do you have a Switching Frequency?..
So far the 'Defeat' that I have used, has worked.. I have not tackled the Oil Pressure Circuity yet.. That is next on the 'List'.. After this is Finished..