A-KLASA / W168 / 1.6 ben semiaut - Starter Not Functioning After ECU Cable Disconnection

Hello,

Until today, the car was running normally, but I wanted to unscrew the flow meter and check how dirty it is.
However, I did not unscrew it, because I had to leave and unfortunately I tried to start the car on the DISCONNECTED ECU CABLE.

Of course, the car did not start, even the starter did not turn, but the fan turned on.

I go back under the hood, plug in the ECU cable and go back to the cabin.

I am trying to start - the fan does not turn on anymore, I hear that the fuel pump is working, BUT THE STARTER AGAIN DOESN'T SPEED EVEN. And half an hour earlier he was working normally ...

I connected to the computer and there were errors with the connection to CAN and a short circuit of the starter mass - strange because it greedily worked before and I did not drive the car ...

I deleted the errors and now purely on the computer and then the starter will not even turn ... please help

It is a pity that I went and tried to unscrew this flow meter - I would not have this fault now - because it is not known what happened

I'll check the battery area tomorrow

and if I find a plug with this purple cable, what next ...? - should I check something with a meter?

And you briefly checked the starter itself.

I solved the problem.

I checked that by putting the plugs back into the ECU, I must have made a mistake - one pin to be exact was bent ...

After straightening, the car continues to run as before ...

I close the topic - Thanks - Regards