new blower motor not work / issue U1076 00 [009]

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david.zlaty

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Discussion starter · #1 · Mar 28, 2022

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Hi all,
I have touareg 2012 3.0 tdi.
Fan in the interior stop working. I read some articles and after I realized it will be blower motor with resistor. I replaced it with new one and remove all errors via VCDS, but FAN still not working. All fuses are fine.

I got new error messages:
0308
U1076 00 - Local data bus 2, electric problem

Could someone help with it? I don't know what to do next.

Photo from diagnostic below.

 

SaVAGeSoot

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#2 · Mar 28, 2022

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You need to translate everything.....

009 = open circuit\short to ground.
Get the wiring diagrams out and find your short.

 

SaVAGeSoot

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#3 · Mar 29, 2022

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Brown wire (pin 1 I think) should be ground and it should ground behind the dash on the right hand side.

 

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david.zlaty

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Discussion starter · #4 · Mar 29, 2022

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SaVAGeSoot said:

Brown wire (pin 1 I think) should be ground and it should ground behind the dash on the right hand side.

Click to expand...

Thank you for your help! Yes, probably it will be short to ground. Diagnostic not specified where is the problem.
I tested all cables in blower motor and it have 12V and connector everything around looks good. Only signal cable has 1V.
I will try remove climatronic from dashboard and I will do test for all cables there.

It could be a lot of modules. Fúú.

 

SaVAGeSoot

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#5 · Mar 29, 2022

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Is this what you have?

 

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david.zlaty

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Discussion starter · #6 · Mar 29, 2022

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SaVAGeSoot said:

Is this what you have?
View attachment 249802

Click to expand...

I thing it is right image.

Photo below.

 

SaVAGeSoot

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#7 · Mar 29, 2022

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There you go. Check the brown for proper ground.

 

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david.zlaty

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Discussion starter · #8 · Mar 29, 2022

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SaVAGeSoot said:

There you go. Check the brown for proper ground.

Click to expand...

Hi, the ground is fine and cables connected to the ground too.

 

SaVAGeSoot

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#9 · Mar 29, 2022

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So do you have power on the red\yellow?

 

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david.zlaty

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Discussion starter · #10 · Mar 30, 2022

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SaVAGeSoot said:

So do you have power on the red\yellow?

Click to expand...

Yes, blower has power 12V.
The pink cable only 1V.

 

SaVAGeSoot

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#11 · Mar 30, 2022

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That goes to climatronic, so it should increase if the unit is requesting the blower on.

 

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aayammaar

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#12 · Dec 25, 2024

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What was the issue I have the same problem

 

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aayammaar

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#13 · Dec 25, 2024

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david.zlaty said:

Hi all,
I have touareg 2012 3.0 tdi.
Fan in the interior stop working. I read some articles and after I realized it will be blower motor with resistor. I replaced it with new one and remove all errors via VCDS, but FAN still not working. All fuses are fine.

I got new error messages:
0308
U1076 00 - Local data bus 2, electric problem

Could someone help with it? I don't know what to do next.

Photo from diagnostic below.


View attachment 249789

Click to expand...

What was the issue?