Connectivity issue from Realdash to CAN adapter

Connectivity Adapters (CAN/LIN)
21

I also have a problem with connecting via CAN/LIN with the OBDlink MX+ adapter. (Bluetooth adapter is paired with the Android radio) When this option is selected, the connection does not take place. It does not receive any data. If I select the connection via the OBD2 option, everything works.

22

This sounds like the protocol and/or CAN speed settings are incorrect for the OBDLink CAN connection.

23

When changing the baud rate, the result is the same. no data



24

“Timeout” indicates that connection has been made but there is no CAN frames coming in from CAN bus.

Checklist:

  • Verify CAN H and CAN L wires are correctly connected to the adapter.
  • Check CAN line resistance
  • Your vehicle may prevent direct CAN connection on its gateway module unless a special PID/Header is issued (you did not specify vehicle/ECU).
25

So I measured the CAN-L and CAN-H wires and there was 66 ohms. That’s probably fine. But I found out that OBDLink MX+ won’t connect via Bluetooth to the Dynawin car radio. Through the manufacturer’s technical support I learned that the radio communicates via Bluetooth only with hands-free headphones. Not with any other device. So I bought OBDLink SX for USB. Unfortunately, this adapter doesn’t support CAN communication. So that’s bad luck. I don’t know if I have any other options. My Car is Golf 7 2015

26

If you have access to your CAN wires, you can use any of the supported CAN adapters:

RealDash | Manuals | Supported CAN/LIN Adapters

We use a lot of Seeedstudio and Waveshare style adapters and they have been fast and reliable.

27

Thanks for the guidance, I’ll definitely try something.