ClimaTronic not working properly

[Suli]

Hello,

My A2 1.4TDI (AMF) is doing something strange in the climate control unit (climatronic), there is no fan speed from the climate control, and in the display if you put the fan to the maximum, the display bars will go down by it self automactly, and will set the fan to zero. If you put it on auto he will try to start the fan continuously, but when put new line in fan it will go to zero again. The temperature seems to go ok, because if you go fast some wind speed help the air to enter and feel the temp, but if you go slow is like you dont have AC. No cold no hot. I've done a scan and these is the log:

Lots of thanks, and sorry for my bad english

...
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Address 08: Auto HVAC Labels: None
Part No: 8Z0 820 043 D
Component: A2-KLIMAVOLLAUTOMAT 0514
VCID: 377D9EDB154D8D2B3A-258C

6 Faults Found:
00710 - Defroster Flap Positioning Motor (V107)
41-10 - Blocked or No Voltage - Intermittent
00716 - Air recirculation Flap Positioning Motor (V113)
41-10 - Blocked or No Voltage - Intermittent
00727 - Potentiometer in Positioning Motor for Defrost Flap (G135)
30-10 - Open or Short to Plus - Intermittent
00601 - Potentiometer On Positioning Motor for Central Flap (G112)
30-10 - Open or Short to Plus - Intermittent
00600 - Potentiometer On Positioning Motor for Temperature Flap (G92)
30-10 - Open or Short to Plus - Intermittent
01273 - Fresh Air Blower (V2)
17-10 - Control Difference - Intermittent

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...
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Address 17: Instruments Labels: 8Z0-920-xxx-17.lbl
Part No: 8Z0 920 900 TX
Component: KOMBI+WEGFAHRS. VDO D04
Coding: 08135
Shop #: WSC 00749
VCID: 224B5F8FAECFF883FD-5178
WAUZZZ8Z03N027367 AUZ7Z0B2297741

2 Faults Found:
01317 - Control Module in Instrument Cluster (J285)
49-10 - No Communications - Intermittent
00778 - Steering Angle Sensor (G85)
49-10 - No Communications - Intermittent

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Address 46: Central Conv. Labels:. 8Z0-959-433.lbl
Part No: 8Z0 959 433 AH
Component: Komfortgerát T84 1210
Coding: 02048
Shop #: WSC 02138
VCID: 0C1711373C4B5EF3A7-4B32

Subsystem 1 - Part No: 8Z1959801A
Component: Tõrsteuer.FS BRM 0003

Subsystem 2 - Part No: 8Z1959802A
Component: Tõrsteuer.BF BRM 0003

4 Faults Found:
01320 - Control Module for Climatronic (J255)
49-10 - No Communications - Intermittent
01561 - Rear left door
61-10 - Won't De-Safe - Intermittent
01331 - Door Control Module; Driver Side (J386)
49-10 - No Communications - Intermittent
00912 - Window Regulator Switch; Front Left (E40)
27-10 - Implausible Signal - Intermittent

End-------------------------(Elapsed Time: 03:50)--------------------------

 

[Robin_Cox]

Fan motor failure based on the symptoms stated (although obviously could maybe also something controlling the fan motor?)

Judging by the list of fault codes particularly in some of the other ECUs, has the battery been low on charge at any point in the recent past? Would suggest clearing the codes and then seeing what comes back.

 

[steveb]

Fan motor would be the first thing to check.

 

[Suli]

Fan motor failure based on the symptoms stated (although obviously could maybe also something controlling the fan motor?)

Judging by the list of fault codes particularly in some of the other ECUs, has the battery been low on charge at any point in the recent past? Would suggest clearing the codes and then seeing what comes back.

Okay, the first thing I will do is delete the errors and see what it shows, in principle the battery has not had a low battery, although I have removed it a few times for some repairs. If I see that it throws the same thing, I will try to see if the fan receives power, thank you very much!

 

[PlasticMac]

OK

Okay, the first thing I will do is delete the errors and see what it shows, in principle the battery has not had a low battery, although I have removed it a few times for some repairs. If I see that it throws the same thing, I will try to see if the fan receives power, thank you very much!

Best to clear DTCs after dissconecting the battery, as a routine, as random codes are, almost, inevitable, so when you have a real fault, it's a "wood for the trees" thing.
Mac.