ELM320 interpreter equivalent, obd (pwm) to rs232 interpreter.
such as RS232 handshaking, variable baud rates, etc., have not been implemented. In addition, this device is only able to communicate using the 41.6KHz J1850 PWM protocol.
* Diagnostic trouble code readers
* Automotive scan tools
Block Diagram
3.58MHz
XT1 2
3 XT2
Timing and Contr.
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 con.
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