OM603.971 Testing transducer controlling boost?

[glenlloyd]

Hey
Discussed this a little previously but I thought I would post up to see about testing for the vacuum transducer that controls or provides vac to the boost pressure switchover valve. I get about 30 seconds of boost and then it's gone. Vacuum pump and hose routing is correct.

It's been suggested, and I agree, that I should pull any codes from the base module to see if there's a problem but I haven't done that yet, but I will get a reader to take care of that

Any advice or testing to be done on the transducer or the switchover valves that would help me with this?

Thanks
Steve A