Hello Pisa, with the ELM 327, in a Suzuki 2001 system you will hardly be able to scan, the ELM function well approx 2005 up, obviously depending on the software you use. In Suzuki, although the Diagostic Connector is 16 PIN OBD2 standard, the communication protocol is older, depending on the model it took a lot to standardize to Can. In any case on the web there are people with a lot of experience in this scanner and you do not lose anything looking for any software that serves. Safe and luck.