ELM327 OBD-II OBD2 CAN USB Interface Diagnostic Tool is very easy to use. Just turn your computer into a car diagnostic system. This interface with software included is all you need. Works for most of cars after 1996. It can read and clear all diagnostic trouble codes. Display all the live data of your car.
ELM 327 Instructions:
There are several software for running ELM 327, now we are talking about software EasyobdII 2.2 version.
1. First, Connect your laptop with your car and turn the key on or turn the engine to be running.
2. The hardware will be detected and automatically installed, ready to use. Otherwise, you need to use driver file to install it.
3. If you use Windows Vista, only the software EasyobdII 2.2 works with Vista. For rest operation system should not such problems.
4. At the first try, you may have problem and see screen like the following.
There are 5 options like com1, com2, ...com5.
5. At this step, you need Go to Control Panel--> system --> Device manager -->Ports(Com&LPT) --> USB serial port(com?), to find out which com number you need choose.
6. If the above com number is com1, Restart program EasyobdII, choose COM port as com#1 at bottom line of program, and let the program detect car ECU.
7. The system will generate data and shows on screen.
8. Other thing to try: plug and unplug OBD2 connector and make sure connection is OK; or try a different usb port of your laptop