This PWM OBD-II interface is a PC
& PDA based scan tool..
The interface can be used in
conjunction with our free software to turn your laptop or desktop computer into
a fairly sophisticated automotive diagnostic system. The included software has a
built-in database of more than 3000 trouble codes, and allows you to read and
erase stored trouble codes and oxygen test results, turn off the MIL ("Check
Engine" light), and display real-time sensor data.
The circuitry utilises ELM processor as a
central interpreter for PWM standard on-board diagnosis (OBD-II)
equipped vehicle using an RS232 serial connection, to convert between a
fast PWM data stream and standard ASCII characters for a robust
connection to PC or PDA.