Rt4 inop.

[abonaser110]

Hi everybody i have citroen c6 suddenly my rt4 radio stopped working. I Tried All fuses ok still not working with the malfunction display so i fit another rt4 with its amplifier form another car still not working any person have thing to try thanks

[GiveMeABreak]

So we really need to know what is not working. Is it he RT4 Head Unit or the multifunction display screen?

You really need to try and find the problem before swapping parts over, so have you used Diagbox / Lexia to run a diagnostic on the unit? This should identify any faults with the head unit or the screen.

Don’t forget if you have changed the RT4 for another unit it will need VIN coding before it will work properly.

[abonaser110]

Both the rd4 and the multifunction display not working i used the maxiscan will not Identify the fault i was thinking if the bsi unit will do effect or not thanks

[GiveMeABreak]

You really need Lexia on it as third party diagnostics are not always able to read the manufacturer-specific codes. You may not be able to tell solely from looking at the RT4 if it's faulty or not, unless you're saying the radio or telephone isn't working for example. But as I said if you have swapped RT4 units over, you will need to VIN code the new unit for proper functionality before you can test it.

The BSI won't be at fault or I suspect you'd have other issues.

[osx]

Both the rd4 and the multifunction display not working i used the maxiscan will not Identify the fault i was thinking if the bsi unit will do effect or not thanks

RT or RD?