Hi guys I need some help
I have a Fiat Stilo with sound issues I have used 1&6 and initial bleep does not give any sounds, also the fm and cd gives no sound output either on the checks it does say lft subwoofer or something but I'm totally lost I have tried another head unit in it and it's the same any ideas?

Hi bud, I'm a little confused are you saying your head unit doesn't work?

Hi sorry let me explain better
I have the visteon head unit in my stilo I turned it on the other day it displayed all the normal info channel etc etc but there was no sound at all ... I did the test button one and six and on the initial test (speaker bleep)it was silent ....I tried a spare head unit in that I had lying around off a scrap stilo I had and it was the same ... (No sound) i have read threads about the amplifier but I'm not to sure with this stuff and wanted professional advice from you guys .... So to sum up
Stereo powers up
Displays all channel details
No sound from any speaker
No sound from bleep test on 1 & 6
Hope this is better described for you

Left hand side of the dash, behind the trim with the passenger airbag deactivation switch on it, where is a multi plug adapter which all the speakers run though, might be worth taking this cover off and checking it's not become loose.

Thanks mate I've been away so I'll do it tomorrow morning