Problem GPS

[JimmyFrx]

Hello,
I have a GPS on the dashboard of my SDL Sport. It worked with the previous owner of the car in Belgium. Now in Switzerland I can't get it to work.
I have already checked the connection. The light flashes red on the GPS

How can I know if it still works?
Thank you

[Stephen Dean]

There is a channel called Comms RS232 Diag that reports the status of the RS232 port, can you have a look at this channel in Online | Monitor Channels and report what is being shown.