ELM322 Datasheet (ELM Electronics) - OBD (VPW) to RS232 Interpreter

ELM322, OBD (VPW) to RS232 Interpreter

Since the 1996 model year, North American automobiles have been required to provide an OBD, or On Board Diagnostics, port for the connection of test equipment.

Data is transferred serially between the vehicle and the external equipment using this connection, in a manner specified by the Society of A

ELM322 Features

* such as RS232 handshaking, variable baud rates, etc., have not been implemented. In addition, this device is only able to communicate using the 10.4KHz J1850 VPW protocol that is commonly used in General Motors and some Daimler Chrysler vehicles. Applications

* Diagnostic trouble code reader