Peugeot 407 SW 2.0 HDI 136 FAP - Which solenoid valve controls the turbine?

For some time I have been struggling with the problem of lack of power in my 407. I have already checked everything and I have the turbine and its control, so I wanted to start with the cheaper option, i.e. control.

From the servicebox I read that I have 2 solenoid valves and according to the description both are described as a turbine solenoid valve. I would like to ask if this is a mistake in the description? or are they both bridged in some way?
I know one is located at the bottom of the engine from the front, but I can't locate the other. Could someone please indicate where I can find him?

Hello, the valve (23) is responsible for controlling the turbine.

And would you be able to indicate exactly where this solenoid valve is located?

You are interested in item 1233.
2V GR plug.

Thanks a lot, now I know I won't do it myself. These animations come from a program? Can you know the name

The valve is accessible from the bottom of the car above the right half-axle from the timing side.

stanley* wrote:

The valve is accessible from the bottom of the car above the right half-axle from the timing side.

If you have 3 elbows in a limb, you will get it from the bottom, for people with "ordinary limbs" access without problems from the top of the engine.

And then what is valve 18 (1618 S4) for?

Controls the flap in the intake.

And which controls EGR?

No, EGR has an electric actuator.

Thank you kindly for your help. Subject exhausted, so I close.