[PZ]

You can run the SAIP with VCDS to see what sections of the system work. It will attempt to run the pump and open the solenoid. Narrow it down from there.

 

[PZ]

Here is the solenoid and vacuum line for the Combi valves (far left), which connect to the SAIP.

This is the connection to the plastic tube that usually breaks:

This is where the hoses lead, the 2 large valves at the top side of the picture:

 

[PZ]

I used about 10' of 3.5mm vacuum line to replace all of the plastic lines and vacuum lines on a V6. The vacuum line to the reservoir can be patched with a short section of vacuum line if need be. The hardest line is the one to the front of the variable intake actuator.