I tested manually with 12V signal my AAC valve and the solenoid is engaging fine. Now when idling and I disconect the AAC connector, there is no change in RPM at all.. Some posts said it should drop a bit but nime is not... So I'd like to know if there is a way to test the voltage comming from ECU to check if he send a signal to the AAC valve?? Because the idle is not really smooth... thanks