contemporiser

What is a proper starting procedure of the pump?
My, after powering up stays silent.
It works only after pressing door or trunk opening buttons.
My guess is that first thing after powering up it supposed to evacuate the vacuum storage tank.
I have no vacuum in the climate control system, I am not sure if the pump takes care of it by itself or if a signal from the cc panel is required.

The Panel shows 3 errors:
sun sensor
emission sensor
pulse module

In any case, none of those errors should cause decision to disengage the pse, isn't it?
I suspect that the cc panel IO may be corrupted, so it doesn't read or send the right signals, but I am not so sure if the pse even requires any to evacuate the system.

Is there any pinout diagram available? you could add one for the cc panel as well if there is one, please

Plutoe

dont speculate with forum HS---go to MB WIS for the correct info or go to ebay for a copy

contemporiser

I am not so sure that WIS would include that information, Question regards pump internal circuitry, and not even the physical aspect of it, but rather a boot procedure of the pump.