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Rosello

How to connect interface OBD2?

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Hi Rosello.

No you do not need to connect to the ECU ground.  The 12V and GND is only needed to power the wifi device, it is not needed for communication.  It looks to me like your problem is you have used the USB tuning port, not the CAN port.

 

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"No you do not need to connect to the ECU ground.  The 12V and GND is only needed to power the wifi device, it is not needed for communication.  "

 

Are you sure?because look it's write "connect to ecu signal ground"

 

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Edited by Rosello

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