Audi A4 (B8) Climatronic dead

[Tawe]

Hi. I have problem with 2008 Audi A4 B8 2.0tdi CAGA with climatronic control unit.


It suddenly went off, no lights, nothing - its's dead.


I've checked fuse (n.10 - 10a) for climatronic, have power. Checked power and ground wiring to it, all fuses, all good.


Also cooling fans runs immediately when I start the car.


Faults in other modules:
01320 - Control Module for Climatronic (J255) - No Signal/Communication
U0164 - Lost Communication With HVAC Control Module


Any advice, similar problem?

[Keithuk]

VAG Error Code: 01320


Fault Location:
Control Module for Climatronic (J255) - No Signal/Communication/Check Diagnostic Trouble Code (DTC) Memory

Possible Cause:
Air conditioning system does not operate.

Data Bus defective.
Air conditioning system control unit defective.
Check Diagnostic Trouble Code (DTC) Memory.

Possible Solutions:
Check Data Bus Chapter 90-9.
Skoda-Fabia 2000-Electrical.pdf (http://btracing.home.xs4all.nl/FABIA/78444695-Skoda-Fabia-Electrica.pdf)

Read out air conditioning system fault memory.



VAG Error Code: 049508/131654/12626/28836/21630/4708/5055/6056

EOBD II Error Code: U0164

Fault Location:
HVAC Climate Control Module (J301) - No Communication

Possible Cause:
Wiring/Connector(s).

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Read Measuring Value Blocks (MVB).

Tis’ the HVAC Season (http://forums.ross-tech.com/showthread.php?633-Tis%92-the-HVAC-Season)

As taken from my new VAG Fault Codes software.

[Tawe]

Problem solved :)


Tried with another (used) basic climatronic module, and bam, lights on, it have communication.


But buttons doesn't had a function, probably due to component protection thing. I just swapped eeprom from old to new one, and everything is good as it should :D