symphonyII can-bus code 01336

[dougyfresh]

I had my radio out a while ago to remove the a/c controls and ash tray so I could install my shifter. Since the reinstallation my radio has never worked the same since.

I did have to enter the security code to get the radio out of safe mode.

My symptoms now are:
~ radio buttons do not light up when headlights are on
~ radio display is not in the DIS on the instrument cluster
~ only front speakers work, rear door speakers and subwoofer do not work

I am getting the following DTC:

VAG-COM Version: Release 311.2-N

Control Module Part Number: 8E0 035 195 A
Component and/or Version: symphony II NP2 0007
Software Coding: 00001
Work Shop Code: WSC 00256

1 Fault Found:
01336 - Data Bus for Comfort System
49-00 - No Communications

Any idea what could be the problem? I haven't touched any of the wiring and have also made sure the radio connections are solid. All my fuses are okay as well. Haven't seen any blown fuses.

Do I have to recode the radio via VAG-Com?

Thanks!

[AvanTTix]

You shouldn't have had to re-enter the safety code, so this is really strange. I'm guessing you've already removed the head unit and double checked that all the connectors were all plugged-in.

Is your A/C working okay?

Anything else that isn't working as expect in term of comfort "options"?

[dougyfresh]

A/C works fine.

All other 'comfort' features work fine.

I checked the connections multiple times but I'll check them again.

I need to have a second person verify that the subwoofer is working too. I am not sure if is working. I do know the speakers in the rear doors are not working for when I turn the fader to +10R there is no sound out of the rear doors.

Which wires are for the Can-Bus? I'll have to pull up the Bentley manual and start tracing wires. It would be nice to try someone else's Symphony II to rule out the head unit or my wiring.

[AvanTTix]

Here's the pins-out diagram:

[Don Supreme]

I had my radio out a while ago to remove the a/c controls and ash tray so I could install my shifter. Since the reinstallation my radio has never worked the same since.

I did have to enter the security code to get the radio out of safe mode.

My symptoms now are:
~ radio buttons do not light up when headlights are on
~ radio display is not in the DIS on the instrument cluster
~ only front speakers work, rear door speakers and subwoofer do not work

I am getting the following DTC:

VAG-COM Version: Release 311.2-N

Control Module Part Number: 8E0 035 195 A
Component and/or Version: symphony II NP2 0007
Software Coding: 00001
Work Shop Code: WSC 00256

1 Fault Found:
01336 - Data Bus for Comfort System
49-00 - No Communications

Any idea what could be the problem? I haven't touched any of the wiring and have also made sure the radio connections are solid. All my fuses are okay as well. Haven't seen any blown fuses.

Do I have to recode the radio via VAG-Com?

Thanks!

Security code after prolonged power loss sounds normal to me.

Also, no communication from radio to DIS and no face plate lighting also "suggest" a can-bus issue. An issue with the physical layer... Focus on pins 7 and 12 on the A connector.

[dougyfresh]

Thanks guys. When I have some time I'll dig into this. Been out of comission this week due to sinus surgery.

[dougyfresh]

I reviewed the wiring diagrams and the rear speakers and subwoofer are run off the amplifier.

I had the radio on (sound out of the front door speakers and dash center speaker) on Saturday. No sound out of the sub. I then unplugged the amp and no change (still sound out the front).

What I don't understand, from the wiring diagrams, is how the amp is tied to the CAN-bus?

I have a lead on an amplifier to see if this fixes the problem.

[dougyfresh]

I figured out the problem and thought I'd provide closure to this thread.

1) I overlooked the most common of items.... Check the Wiring Connections.

I have a Pioneer Avic D3 I am getting ready to install so I've been going through the wiring to make sure I have that all figured out. In doing so I have been studying the Symphony II non-bose wiring outputs. When viewing my car's Symphony II I only had two connectors plugged in.. The one for power and the one for the front speakers (non-bose has front speakers run off the head unit and the rear speakers are run off the subwoofer).

There is supposed to be a third connector (labeled 'A' in Steph's post above). Upon digging [elbow] deep into my dashboard in search for any loose connectors I found it! The third connector that provides signals and power to the amplifier and rear speakers. When I connected that to the Symphony II I know have the rear speakers working and the sub working and the DIS lights up and the radio lights up when the headlights are on.

SO, I just somehow did not connect that third plug when I had the stereo out for the very first time a little over two years ago. CAN-bus code is now gone.

I missed this because I have been so focused on the engine modifications and getting the car running well with proper software. Now that I have achieved that I have been slowly going through the other issues and found my mistakes.

My mistake, your fortune.