Assuming the vehicle is running with no major issues I suspect the fault lies with the OBD diagnostic port .Hi, I can’t connect with the Ecu I tried different apps, adapters, even with laptop. I can’t connect to the Ecu and I really don’t know why! If it broken can I just exchange ecu or has it something to do with the key chip?
Hi the car is runing but there are some strange things also that i cant connect with ecu i only tried some bluetooth and wifi adapters from 2 euro to 200 euro.. and with some laptop programs.. k-line how to check that?Hold your horses cowboy. What kind of USB adapter you're using? Do some research first.
Did you knew, some of them are not compatible with Fiats, especially using Fiat specific software like FES or MES?
Then, we have next step. Drivers (USB or BT acting like COM port) and configuration.
And the car itself. Some older cars have K-line communication, there is no CAN. Or the opposite (CAN only).
The protocols are different, OBD2 port pins are different and the software required also (MES should handle both).
Plus, give us the proper info. Is the car running or dead? These are 2 completely different scenarios.
You cannot just swap ECU, it will need Immo signal from the original key (from the donor car). In every country there are companies, workshops who erase the ECUs (so called "virgin" state and/or "immo off"). You can (you must) buy one like that (not just random used one from eBay, unless they claim it's "virginized"). Other option is a full set from donor car (ECU + Body Computer + keys + door lock internals).