RX8Club.com - code thrown but working normally

hey guys, i got a 2004 manual and am getting the code p2004 which is intake manifold runner control stuck open(bank 1). ive done all i can to see what it could be but with no luck. there are no vacuum leaks, ive ran power to the apv motor and it operates as it should and the wiring to the apv motor is fine. the magnet on the gear is at the 1 oclock position when fully closed. is there something i have missed that it could be? ive read if its reading more than 1 V it is to determine that it is stuck open, how would i go about reading the input voltage? any other suggestions would help very much.