Trw2scan
The software trw2scan is the only freely available tool being able to communicate with airbags ECUs using the TRW2 protocol. This kind of ECUs is found in many cars built by Fiat until the late 90s (Fiat, Alfa Romeo, Lancia,...).
The software is used together with script files that define the communication details that are different from car to car.
The usage syntax is:
trw2scan scriptfile
Hardware
trw2scan works with USB KKL-adapters based on FTDI's FT232 chip. There are many sources found on the web, one is stated below.
To be able to connect to the GTV ph 1 (ECU 60625181) the L-line must NOT be connected. You need to modify either your KKL-adapter or the OBD2 16-pin to Fiat 3-pin adapter cable for this purpose.
ECUs known to be supported
| ECU number | Cars |
|---|---|
| 60631206 | Alfa 145/146 |
| 60625181 | Alfa GTV phase 1 (Make sure L-line is not connected!) |
Links
Homepage of the unidiag OBD software, also providing a KKL-adapter compatible with trw2scan
