Code 01336 help please

[paul6316]

I've got the following code on my LCR and have done a bit of research and found what the code is.

01336 - Data Bus for Comfort System: Single-Wire Operation

Possible Symptoms
Data Bus Comfort working in Single-Wire Mode

Possible Causes
Wiring/Connectors from/to Control Modules
Control Module in CAN Data Bus Comfort faulty

Possible Solutions
Check Measuring Value Blocks (MVB)
Check Wiring/Connectors from/to Control Modules

What I would like help on is what and where are the control modules so that I can check the wiring.

Cheers

 

[Slimy]

From ukmiv.net;

The CAN bus in short is network in which control modules (ECU's) can send each other digital messages.

It operates on 2 wires which both send out a signal, the signal is the same but inverted on one line and used to verify the other.

Essentially the system can run with one CAN line, which is what your car is doing. The system will still function as normal but now can not recognise a bad/corrupt signal as it has nothing to verify it against.

You need to check the CAN wires, preferably starting at the CAN gateway (which is built into the instrument cluster) and convenience ecu (located under the instrument cluster, behind the right hand lower dash panel) as the fault is on the comfort network.

The can wires are twisted and are coloured orange/black - CAN high and orange/brown - CAN low. I would guess either one of these wires are open circuit or you have a defective control module.

 

[LEE69]

The 1M isn't canbus

 

[paul6316]

The 1M isn't canbus

Does that mean that the advice from Slimy is wrong?

 

[LEE69]

Have a look here http://www.ross-tech.com/vcds/canbus.html

No mention of the 1M chassis having can bus.

But, you are getting the error code for some reason.

 

[Slimy]

The OBD port isn't CANBUS, but I thought some of the intermodule comms was? And the fault code suggests a failure between modules.

The google search I did for the ukmivs response showed that there is no 'alternative' fault code meaning, so if that's the code coming up then there must be a CANBUS somewhere in the wiring, even if it doesn't present itself at the port?

 

[paul6316]

This is the full print out from the diagnostics. Does this tell anymore?

Saturday, 15 January 2011, 11:56:28.

VCDS-Lite Version: Release 1.1

Control Module Part Number: 1C0 959 799 F

Component and/or Version: A7 Komfortgerát HLO 0003

Software Coding: 00258

Work Shop Code: WSC 06402

VCID: 3A07B1EB3551

Additional Info: 1C0959802B A7 Tõrsteuer.FS KLO 0004

Additional Info: 1C0959801C A7 Tõrsteuer.BF KLO 0009

Additional Info: 1C0959811A A7 Tõrsteuer.HL KLO 0009

Additional Info: 1C0959812A A7 Tõrsteuer.HR KLO 0009

2 Faults Found:

01336 - Data Bus for Comfort System

80-10 - Single-Wire Operation - Intermittent

00930 - Shareware Version. To Decode all DTCs

27-00 - Please Register/Activate

---------------------------------------------------------------------------

 

[LEE69]

Spotted this

http://www.ross-tech.com/vag-com/cars/vwmkIV.html

Seems it is there on the instrument cluster.

 

[paul6316]

The OBD port isn't CANBUS, but I thought some of the intermodule comms was? And the fault code suggests a failure between modules.

The google search I did for the ukmivs response showed that there is no 'alternative' fault code meaning, so if that's the code coming up then there must be a CANBUS somewhere in the wiring, even if it doesn't present itself at the port?

Does your original advice stand then including where things are?