BBOD Wiring testing

[richie2990]

I have a bh5 subaru legacy MY2000 revB , i had some issues with the secondary turbo boosting , it used to get up and take off but after fixing a unmetered air leak before the primary turbo it seems to be a but flat , i have checked for any vacuum leaks with brake clean and in diagnostic mode i sprayed around secondary componets  and no change in idle , i understand that under boost there will be more chance of air escaping but , i use the scan tool at work thats for hyundai on OB2 funtion and on secondary its giving a reading of 127 kpa on the map sensor , and  i noticed that the IACV in diagnotic mode moves erratic and i tested the earth output with the bbod disconnected and it had no earth output from the ECU as the bbod is earth switched from my findings and normally is from most manufactures , anyway with the bbod plugged in the IACV solienoid clicks away getting a earth so i am unsure where this is coming from and also i have a BG5 and tested that and does the same thing has anyone else come across this ? i dont throw parts at cars i want to test things before replacing that was how i was trained