DB9 Serial RS232 OBD2 Cable (FIT0429)

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OBD II is an On-Board Diagnostics standard that is used on a large variety of cars. It provides access to numerous data from the engine control unit (ECU) and offers a valuable source of information when troubleshooting problems inside a vehicle. This is an OBD-II to DB9 cable, which allows you to access your car’s OBDII connector.


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My company bought this cable yesterday. Connected it direct to a redboard CAN-BUS Shield, But when start engine, many cluster lights start to illuminate and not stop. Is this cable’s DB9 PIN map compatible with redboard CAN-BUS shield’s DB9 interface? Are there any other parts I need?

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@ree81638 Check out the info on this page:

https://learn.sparkfun.com/tutorials/can-bus-shield-hookup-guide

Particularly part 6 “Jumpers” where it refers to the jumper settings to match the OBD to DB9 cable

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Thanks. But I even cannot find part 6 “Jumpers” in your link.

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@ree81638 Thats because i posted the completely wrong link… apologies. Updated now.

https://learn.sparkfun.com/tutorials/can-bus-shield-hookup-guide

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