Hello Eddy The latency values ​​are 2, the receive buffer and transmit buffer in UART port, I must change to 1 both? However, I was able to connect after so many attempts, but the connection is very unstable and thereby disconnecting all the time. I tried all the settings and all speeds .... I think...

thanks Eddy !

Hello Eddy
Where should I put the Latency Time in 1?

Thanks Eddy.
I'll check the things that you said.

Sorry Eddy, I got it wrong! So, you think there's a wrong setting. The Bluetooth connection is correct because the interface is connected to the computer. When I do the scan for the interface tells me ok. Then when I do the test interface connection, it is sometimes ok and sometimes not ok. In the e...

Hi Eddy
Also removing the resistance the situation is unchanged with the same problems.
I believe that my interface is defective.
What do you think ?
Do you know an interface low cost but that don't have problems?

thanks

hello Alfaeddy Yes, as you said the resistance r04 it connects the pins that you have said. I have succeeded in removing the plastics even if I have made a small damage. I add the photo of thing it is possible to see without the plastics I thank a lot You for your help, tomorrow I remove the resista...

Hello Alfaeddy Yes,that it is my car. The chip in the yellow frame is a MCP2551 The resistor in the blue frame is marked 473 Under the plastic connector there is the resistance R04 but I can not read the value. To remove the white plastic connector I have to desolder it. If you think it may help you...

Thanks Alfaeddy.
This evening I send photos with details that you asked me.
The car is a Fiat Punto 1.3 mjtd 2005.

hello I have a problem with the connection to the ECU with a Chinese clone bluetoth. The connection bluetoth is ok and the interface is regularly recognized but when I try to connect to the ECU interface software warns you that the connection is impossible. In addition, the test code AT brings a pos...