audi chorus (2) radio - fails after entering SAFE code

tram-man · 08-24-2004, 08:05 AM

Got myself a wide faced Audi Chorus 2 radio and after entering the code from the SAFE screen (which is correct) starts but then shuts down immediately and the radio then goes into safe mode again. I briefly see the radio settings on the display and then it goes dead. Almost as though a fuse is blowing... but it's not.

Any ideas? I have to say I'm only bench testing the radio with a power supply. So I'm only using the ground and 12v+ve connections. Has it got something to do with the Can-bus? Does the radio only work when the other connections are present?

Thanks,

Stuart

MacSub · 08-24-2004, 09:08 AM

If there is no switched live on the diagram on the unit then it will need the CAN-BUS to tell it when the ignition is on, which is why it keeps turning itself off.

tram-man · 08-24-2004, 09:59 PM

.. and I haven't got an Audi with CAN-BUS so I guess I'm stuffed. Again!

I bought the Chorus 2 for my Audi 100 cos the older type of Audi radios are difficult to kit out with a CD changer (which I need to activate the line-ins for my iPod).

What is on the CAN-BUS (K-BUS) line? Can I ground it or put 12v on it?

Stuart

MacSub · 08-25-2004, 04:26 AM

No it's a digital coms line so it is expecting a digital signal to tell it that the ignition is on.
You need a Concert I, as these definately have a traditional ignition on connection.
Alternatively you could have a look inside the HU and see if there is a pin for ignition on that has just been blanked off. I doubt they would have redesigned the circuit board for CAN-BUS only use, so you may find you can simply reconnect the pin. It is normally the third pin along from ground and called "S-Kont"(see diagram).
Cheers, Andy

tram-man · 08-26-2004, 12:48 AM

Well, that would add to my collection as I now have Audi Gamma CC, Audi Gamma CC (Bose version), Audi Chorus 1 en Chorus 2! Still no inputs for my iPod.

I looked at getting a Concert 1 before I bought the Chorus 2 but I got the impressin that connecting an after market changer or RCA input adapter was more problematic with the Concert 1's.
Same problem as my older Audi Bose and the Older wide faced Audi Delta's in that they need Audi specific changers.

TeddyBGame · 08-26-2004, 05:56 AM

Concert I isn't CAN-based...so you won't have any issues. If the Chorus II is CAN-based (which I think it is)...then you won't be able to provide a CAN protocol from your Audi 100. Sorry. Specifically, the CAN-bus is supplying the ignition, illumination and speed sensor (GALA) information via this protocol (commonly found in 2002+ A4/A6/TT/A8 etc etc..

Let me know if you need the part#'s for the female 8,10 and 20 pin adaptors and pins/wires to make it fit correctly.

Glad to help!
-ted
basile_edward@emc.com

tram-man · 08-26-2004, 06:15 AM

..cos my C4 Audi 100 wasn't prewired.

I just have an increasingly large collection of OEM Audi radios all of which I'm tinkering with to try and activate the line-ins for my iPod. I don't have any intention of running a cable up to the back for a changer as I have 20GB of MP3's.

Ideally I would like to get the OEM 1992 Audi Bose into thinking that the there's a CD connected without buying the 100/V8 interface box.

Thanks for the info though. I guess I made a mistake buying a C-BUS radio for my non C-BUS radio. So it will be up for sale.

MacSub · 05-12-2011, 10:18 AM

Even CANBUS HU's will work without a CANBUS connection, however they will shut down after 60minutes. e.g. when used in a CANBUS vehicle you can turn the HU on manually with no keys in the ignition and therefore no CANBUS and it'll work for an hour. After an hour you just have to turn it on again this is so you don't drain the battery if you've left it on and wandered off and forgotten about it.

08-24-2004, 09:08 AM	#2
MacSub AudiWorld Senior Member Garage is empty, add now Join Date: Nov 2003 Posts: 1,726	Have you got both perm live & switched live connected? If there is no switched live on the diagram on the unit then it will need the CAN-BUS to tell it when the ignition is on, which is why it keeps turning itself off.

08-24-2004, 09:59 PM	#3
tram-man New Member Garage is empty, add now Join Date: Jun 2004 Posts: 64	There's no switched live... .. and I haven't got an Audi with CAN-BUS so I guess I'm stuffed. Again! I bought the Chorus 2 for my Audi 100 cos the older type of Audi radios are difficult to kit out with a CD changer (which I need to activate the line-ins for my iPod). What is on the CAN-BUS (K-BUS) line? Can I ground it or put 12v on it? Stuart

08-25-2004, 04:26 AM	#4
MacSub AudiWorld Senior Member Garage is empty, add now Join Date: Nov 2003 Posts: 1,726	Re: There's no switched live... No it's a digital coms line so it is expecting a digital signal to tell it that the ignition is on. You need a Concert I, as these definately have a traditional ignition on connection. Alternatively you could have a look inside the HU and see if there is a pin for ignition on that has just been blanked off. I doubt they would have redesigned the circuit board for CAN-BUS only use, so you may find you can simply reconnect the pin. It is normally the third pin along from ground and called "S-Kont"(see diagram). Cheers, Andy

08-26-2004, 12:48 AM	#5
tram-man New Member Garage is empty, add now Join Date: Jun 2004 Posts: 64	Radio collection is expanding Well, that would add to my collection as I now have Audi Gamma CC, Audi Gamma CC (Bose version), Audi Chorus 1 en Chorus 2! Still no inputs for my iPod. I looked at getting a Concert 1 before I bought the Chorus 2 but I got the impressin that connecting an after market changer or RCA input adapter was more problematic with the Concert 1's. Same problem as my older Audi Bose and the Older wide faced Audi Delta's in that they need Audi specific changers.

08-26-2004, 05:56 AM	#6
TeddyBGame AudiWorld Super User Garage is empty, add now Join Date: Feb 2002 Posts: 6,788	Get a Concert I...and attache a blitzsafe via the CD changer interface. Good luck! Concert I isn't CAN-based...so you won't have any issues. If the Chorus II is CAN-based (which I think it is)...then you won't be able to provide a CAN protocol from your Audi 100. Sorry. Specifically, the CAN-bus is supplying the ignition, illumination and speed sensor (GALA) information via this protocol (commonly found in 2002+ A4/A6/TT/A8 etc etc.. Let me know if you need the part#'s for the female 8,10 and 20 pin adaptors and pins/wires to make it fit correctly. Glad to help! -ted basile_edward@emc.com __________________ TeddyBGame - C5 Avant - "the Beast" (Ha!!) - 2005 Chrysler Pacifica Touring (Nav, Sirius, Bluetooth, Xenon, TPMS, ParkSense, DVD Changer - basically loaded) - 2003 Vespa ET2 (modified exhaust and carb -- so I can max out at 45MPH) - John Deere Gator (4x2) for the boy As of November 2006: Accessory Add-ons: (Definition: An item that provides a specific function - in a cyclical nature - and can be removed very..very easily.) 1) OEM winter floor mats 2) OEM rubber trunk mat and cargo net 3) VW Touareg cigarette lighter flashlight 4) Thule roof bars with Evolution 1200 roof box Upgrades: (Definition: A [bolt-on/bolt-off] item that enhances the appearance, performance or misc function of your car.) 1) OEM front/rear Euro black Recaro Seats (from a Euro 2003 S6 Avant) http://forums.audiworld.com/a6/msgs/618112.phtml 2) OEM HID/Xenon (complete) housings (car never came with the Xenon option from the factory) 3) OEM Euro front/rear (avant) beam-style wiper blades/arms (available via www.vagparts.com) 4) OEM B6 S4 Interior auto-dimming black mirror with compass and on/off button 5) OEM Euro blindspot exterior mirrors 6) OEM S6/4.2 exterior lower door trim 7) OEM S4/S6/S8 aluminum mirror housings 8) OEM Euro rear license plate panel from 2002+ facelift avant (slight MODification to US plate required) 9) ? 10) OEM Euro RNS-E DVD Navigation system with MP3, SAT control and TV input 11) Dietz 1417 A/V input to RNS-E 12) Blaupunkt ME3 DVD/CD/MP3/TV Tuner with aftermarket amplified TV antenna in windshield 13) OEM Sirius tuner (special version to work with RNS-E) 14) OEM Phatnoise Phatbox MP3 player (trunk mounted) with custom interface cable to allow Sirius tuner and Phatbox to work together -- cool!! 15) ? 16) BBS RC 17x8 ET35 with Michelin Pilot Sports (summer tires) 17) 2002+ Rear bumper with valance openings for Magnaflow 3" exhaust tips 18) OEM submarine fin roof antenna for SAT / GPS / Cellphone (GSM) 19) OEM Euro gunmetal black avant roof rails 20) 2002+ Climate control faceplate to match faceplate color of RNS-E 21) Walnut wood trim near hazard button (above RNS-E) to match rest of interior wood scheme 22) OEM Euro Avant door panels with integrated sunshades (imported from Germany to match the black leather in my Euro Recaro interior) 23) OEM Euro blacked out front grille (no chrome perimeter) 24) OEM gunmetal black lower rear hatch strip (specific part# for avant vs. sedan) 25) OEM RS6 gunmetal black interior door latches; no need to add any RS6 badges in my car (Thanks Nelson!!!) 26) OEM Euro four spoke walnut wood and black leather (special order via Audi GmbH) multi-function wheel with tip buttons and OEM phone (BT) control 27) Upgraded "618" MF/Tip control module Coming soon: - rear mounted removable 7" LCD panel MODifications: (Definition: Any permenant change to a part or component of your car that you cannot reverse) 1) Tray under armrest to add aux. cigarette lighter 2) OEM avant CD changer bracket MODified (to fit two large CD changers etc) - now I just use it for Phatbox, OEM SAT tuner and OEM BT module. 3) Exhaust tips MODified to add Magna Flow (#35163) 3" dual walled tip 4) Factory wiring behind Sym I to simplify installation/removal of RNS-E 5) MODified glovebox to support fitment of Blaupunkt ME3 (a biatch to install!!) 6) MODified headlight switch bezel for fitment of GALA switch for "video-in-motion" for playing Blaupunkt ME3 through RNSE 7) MODified stock exhaust and had magnaflow 3" tips welded on (see above) 8) MODified rear Euro license plate surround to house 2nd rear foglight (2001 model only came with one from the factory); US license plate needed to be MODified a bit to fit inside the narrow Euro opening. RNS-E for C5 A6/S6/allroad/RS6 - your quest starts here - (regularly updated) <a href="http://forums.audiworld.com/a6/msgs/607331.phtml">OEM submarine fin installed on

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08-26-2004, 06:15 AM	#7
tram-man New Member Garage is empty, add now Join Date: Jun 2004 Posts: 64	Ah yes, but you see I don't have the cable or interface.. ..cos my C4 Audi 100 wasn't prewired. I just have an increasingly large collection of OEM Audi radios all of which I'm tinkering with to try and activate the line-ins for my iPod. I don't have any intention of running a cable up to the back for a changer as I have 20GB of MP3's. Ideally I would like to get the OEM 1992 Audi Bose into thinking that the there's a CD connected without buying the 100/V8 interface box. Thanks for the info though. I guess I made a mistake buying a C-BUS radio for my non C-BUS radio. So it will be up for sale.

05-12-2011, 10:18 AM	#8
MacSub AudiWorld Senior Member Garage is empty, add now Join Date: Nov 2003 Posts: 1,726	Even CANBUS HU's will work without a CANBUS connection, however they will shut down after 60minutes. e.g. when used in a CANBUS vehicle you can turn the HU on manually with no keys in the ignition and therefore no CANBUS and it'll work for an hour. After an hour you just have to turn it on again this is so you don't drain the battery if you've left it on and wandered off and forgotten about it.

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