the avcr itself is the source of the problem. have you check resistance of soleniod wiring ( not attached on either end if this is possible )to make sure it is zero? if wiring to solenoid checks OK and soleniod opens when you apply 12v signal to it then it has to be the avcr itself.
1990 Twin Turbo 5spd Stage 12+ No Show,All GO 1999 Maxima SE 5spd ..also performance Modded