Hi everyone

I have a 2006 STR and I was listen to the radio and CD it was all fine. The next day there is no sound, but there is still buzz sound when I push button or touchscreen, Nav works normal. I have check luggage compartment amp fuse and it looks fine. I use Icarsoft and found the following codes in the Audio section.
B2477, U2003, U2008, U2606, U2607, U2613,

Please help troubleshooting, Thank you!

 

Sound like the Premium Audio Amp is 'shot'.

 

The audio from the head unit to the amp goes via the fibre optic d2b cable.
Each module on the system has to work for the audio signal to get through.
Removing one,module or a faulty one will stop it from working.

The Nav screen is controled by the nav DVD unit in the boot via normal wires. Only the audio for the nav system goes through the fibre.

U2003 is a faut with the CD changer.
U2003 is a fault with the phone module.
U2613 is a fault with the navigation module.

It looks like your d2b fibre network may be down.

Mellow