[gasi]

Zitat von andrewgrhogg

My understanding is that the EDC ECU is accessible from INPA from the 20-pin port. Is that not the case?

Sure, that works but for the ESP ECU only when using an ADS capable interface.

Zitat von andrewgrhogg

If the shocks are too old or damaged then i will send them to be refurbished. For now i need to find if there is just a broken wire or similar that i can fix.

Ok. I just do not expect a wire to be the problem, because the wires are all hidden away an never move in any way. It is rather probable that the ECU is gone. Many friends here experienced that and were looking for a way to get the ECU fixed, because a new one is terribly expensive and a used one could also be be damaged already.

Zitat von andrewgrhogg

In order to do this i need to first rear error codes (others here in US have used regular code readers with 20-pin to do this for EDC errors) and then test each shock electrically while still in the car.

Read the codes is really key. Then you get an idea of the trouble.
To do the manual power thing you need the Pin layout of the plugs to know which lines are to be connected. Or probably you can manually activate by the diagnostic app which would be the safer way.

Zitat von andrewgrhogg

This is the connector i have and will use. Are you saying that it will not access the EDC module?  https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1

Exactly. With the one in your link you will be able to access all kind of stuff but not the ESP, because as I said you need an interface that supports oldfshioned ADS instead of more modern ODB. ESP ECU ist kind of a dinosaur interacewise.
E.g. this one does the job letting you switch OBD and ADS.
I am using it myself as many other colleages here.
 https://doitauto.de/ADS-OBD-Diagnose...iabas/37545568