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Discussion Starter · #1 ·
I'm more interested in the 3rd one 01311. The one other one is from the battery being disconnected.




Address 17: Instruments
Part No: 8E0 920 981 G
Component: KOMBI+WEGFAHRS. RB4 D42
Coding: 01229
Shop #: WSC 05134
WAUPL68E55A046480 AUZ6Z0D0282238

3 Faults Found:
00668 - Supply Voltage Terminal 30
53-10 - Supply Voltage Too Low - Intermittent
01303 - Telephone Transceiver (R36)
49-10 - No Communications - Intermittent
01311 - Information Data Bus
80-10 - Single-Wire Operation - Intermittent
 

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Discussion Starter · #2 ·
I found this information when I did a search on Audiworld.






DTC:
01311
Data Bus Information 2)

No communication

Possible Cause:
The central unit and the navigation unit which are connected to each other via a CAN-bus are located in the navigation control module.

Internal short circuit or short circuit to Ground (GND) of a bus wire between the central unit and the navigation unit in navigation control module.

Corrective Action:
- Navigation control module does not have to be replaced if the system remains functional (the control module then switched to one-wire operation).
- The control module must be replaced if the system no longer functions.

2) This DTC indicates a databus malfunction in the internal data wire between the central unit and navigation unit inside the navigation control module.






Got any clues as to what this means? Where is that control module?
 

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I would check first all CAN wires. The CAN goes into single wire mode if a) one of the two wires got disconnected or b? if a device is on the network that is really bad behaving. In most cases it's an interupted wire and that could be reson enohgh for the RNS-E or Dietz to not go into sleep mode.
 

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Discussion Starter · #4 ·
OK, I'll check my CAN distribution box that I made from Lee's write up and see if all of the wires are securely connected.

One thing that I did notice when making the CAN box was that the wires don't really lock themselves to the box. Is there another kind of box that would secure the wires?

And this could be the whole reason I've been not receiving very good Sirius radio for the past 8-9 months. And do you think that if the RNS-E wasn't going into SLEEP mode then it may cause my battery drain?
 

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hard to say without more troubleshooting. I doubt that the quality of you Sirus receover depends on the CAN connection, that more plain old antenna technique. Your RNS-E not going into sleep may be cause by a faulty CAN wire though. Personally I woudl only use crimp connectors in a car but Lee had somesuccess using his distribution panel. The wires should lock though and not easily come off.
 

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Discussion Starter · #6 ·
Well I just removed the glove box and took a look at the CAN box and everything looking fine. One thing I did notice was that my BT Telephone modules "ground wire" wasn't connected! I had the wire connected to a round spade plug and it was on the bolt where I was going to secure it tightly but it was just resting on the bolt. I guess I just completely forgot to tighten in down.

What problems might this have caused?
 

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I have had no troubles with my CAN distribution panel in almost a year now. I have never had a CAN fault code for single wire operation mode. I have the CANGate, Bluetooth, XM, TV Tuner, and ADR V1 interface connected to the panel and they all work fine.

If your BT module is not grounded, it simply won't work.
 

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Discussion Starter · #8 ·
My BT telephone has been installed for about 9 months now since I had the car. I've used it quite a bit like it was (the ground wire not secure) and I don't remember having any negative problems?
 

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I guess you were lucky and your ground connection was strong enough to power the unit. I think I would tighten it on down though :wink:
 
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