bmw e90 Automatic Air Conditioning Control not work

[uchtool]

hello!
I have bmw e90 diesel year 2010 have Automatic Air Conditioning Control not display and not work!
I made diag and get all this atached errors fault!
I have changed other air conditionning control, but not work too!
my question is:
if I remplace this Automatic Air Conditioning Control, it need some coding?
JBE must be coded if I change it with an others?
you think jbe is cause for that?

Faults: + C914 JBE: No message (K-CAN: status, A/C, 246)
see others error in attached text.


please help me, what must do now?
I need your advices

[uchtool]

any help there?

[uchtool]

where is the experts with bmw?

[nutloose]

get a wiring diagram of the K line
disconnect one component at a time until comms are restored

put a scope on the K line and monitor for signals and check it isn't short to gnd or +ve (except when comms starts up for a very short period)

Just FYI:- I think aftermarket radios used to put 12v on the K line of early VW (which is why VCDS is protected against it) and caused all sorts of other problems

[macro comp1]

alguna ayuda del clmatrinic