Trafic MAP Problem Boost Solenoid Buzzing

My Trafic has the small glow plug light illuminated on the dash.

I've had the codes read and they came back as:

DF074 - pressure sensor,
DF077 EGR valve,

I've removed the EGR valve and gave it a good clean etc, a problem I have noticed is the waste gate solenoid "buzzing" while the van is running. I replaced the MAP sensor (cheap eBay jobbie) but the waste gate solenoid still "buzzes" I tried another solenoid from my friends Vivaro and that buzzed too while connected to my old and new MAP sensor.

After contacting Renault and being quoted £115 + VAT for a new sensor I'm a bit reluctant to dive into it before I know thats deffo the problem.

Can anyone tell me the pin numbers on the ECU from where the wires from the MAP go so I can check continuity 1st?

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Trafic MAP Problem Boost Solenoid Buzzing