After BCM upgrade – problem

[kowaltom99]

Hello gents!

I have IBIZA IV 6J 2009 – “almost” POLO 6R.
Ibiza with ESP, angle sensor, Fog lights (cornering lights), without RLS. Engine BXW

According to tutorials from this forum (concerning POLO) I wanted to make BCM upgrade and add RLS and AUTO lights.
In Ibiza I had BCM 6R0937087, I’ve bought 7H0937090B
I made new wirings according to wiring diagrams from ELSA (for IC, switch and lights, no RLS yet) . After upgrade all lights work. No errors.
Unfortunately after replacing BCM I found one serious problem.

After assembling 7H0937090B, using VCDS I cannot connect to controller of Engine. I thought that BCM is damaged, I borrowed other 7H0937090 and found the same situation – not possible to connect to controller.
VCDS (original) trying to connect to the engine – feedback – “questionable protocol” or “no response from controller”. Rest of controllers I can connect via CAN without any problems.
I used other device ELM 327 – the same situation.
With 6R0937087 that problem doesn’t appear – I can connect to the engine.
What is going on?

Regards
Tom

[iichel]

Do you maybe have a scan of the rest of the car?

[kowaltom99]

Hi
Below autoscan before BCM upgrade with original BCM 6R0937087

Unfortunately after changing BCM to 7H0937090B I cannot make autoscan.
Autoscan stops, because VCDS cannot connect to 01 Engine
What is strange, when I try to enetr OBDII mode in VCDS (with 7H0937090B) - I receive feedback "questionable protocol"

Code: Select all

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


Chassis Type: 6J-SE25 (6N0)
Scan: 01 03 04 08 09 15 17 19 25 44 4B 56



01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
4B-Multifunc. Module -- Status: OK 0000
56-Radio -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 03C-906-024-BXW.lbl
   Part No SW: 03C 906 024 BK    HW: 03C 906 024 BK
   Component:       BXW   MM4HV G 3474  
   Revision: --H11---    Serial number:               
   Coding: 0000071
   Shop #: WSC 06402 785 00200
   VCID: 68D5E6725873DD04B0-5178

No fault code found.
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 6R0-907-37x-ESP82.clb
   Part No SW: 6R0 907 379 H    HW: 6R0 907 379 H
   Component: ESP8.2i front H04 0005  
   Revision: --------    
   Coding: 110228DB016D00B3882514E380D300401300
   Shop #: WSC 04941 000 00000
   VCID: 438F11DEC695DE5C45-8016

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 6J0-820-045.clb
   Part No SW: 6J0 820 045     HW: 6J0 820 045 
   Component: J301  Klimaanlage   0280  
   Revision: 00 23 08    Serial number: 0000000074211-
   Shop #: WSC 00000 000 00000
   VCID: 63CFF15EA255BE5C65-8036

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 6R0-937-08x-09.clb
   Part No SW: 6R0 937 087     HW: 6R0 937 087 
   Component: PQ25 BCM      H07 0012  
   Revision: BF007001    Serial number: 9425B333080762
   Coding: 3C8829A8A8610100002000007E2B1CC8B0C040FF608C00402000
   Shop #: WSC 64564 324 38760
   VCID: 7AF1AC3AF5DF5F9456-802E

   Subsystem 1 - Part No SW: 6R0 959 801     HW: 6R0 959 801   Labels: 6R0-959-801.CLB
   Component: J386__TSG_FT  001 0247 
   Serial number: --------------------
   Coding: 020000

   Subsystem 2 - Part No SW: 6R0 959 802 B    HW: 6R0 959 802 B  Labels: 6R0-959-802.CLB
   Component: J387__TSG_BT  001 0251 
   Serial number: --------------------
   Coding: 020000

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 6R0 959 655 C    HW: 6R0 959 655 C
   Component: VW10AirbagA01 H08 0018  
   Revision: --------    Serial number: 003000000000
   Coding: 003031
   Shop #: WSC 06401 785 00200
   ASAM Dataset: EV_AirbaVW10BPAVW250 A01001
   ROD: EV_AirbaVW10BPAVW250.rod
   VCID: 428114DAD58FD7544E-8016

   Crash sensor for side airbag: driver side: 
   Serial number: 3492ERB402L7IPVCNC1B

   Crash sensor for side airbag: front passenger side: 
   Serial number: 3502ERB402J85LSIT42U

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| User\5K0-920-xxx-17.lbl-SRI1
   Part No SW: 6J0 920 800 K    HW: 6J0 920 800 K
   Component: KOMBI         017 0018  
   Serial number: 00000000000000
   Coding: 110A00
   Shop #: WSC 06402 785 00200
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04020
   ROD: EV_Kombi_UDS_VDD_RM09_SE25.rod
   VCID: 2E59506A71174334BA-807A

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 6N0-909-901-6R.clb
   Part No SW: 6N0 909 901     HW: 6R0 937 087 
   Component: GW-K-CAN TP20 0012  
   Coding: 422000
   Shop #: WSC 64564 324 38760
   VCID: 70E58E12A3A315C4E8-8024

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:. User\5K0-920-xxx-25.lbl
   Part No SW: 6J0 920 800 K    HW: 6J0 920 800 K
   Component: IMMO          017 0018  
   Serial number:               
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03002
   ROD: EV_Immo_UDS_VDD_RM09.rod
   VCID: 2E59506A71174334BA-807A

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 6Q0-423-156.clb
   Part No: 6R0 423 156 
   Component: LenkhilfeTRW        V272  
   Coding: 10111
   Shop #: WSC 06402  
   VCID: 6DDB97662091F82CC3-8038

No fault code found.

-------------------------------------------------------------------------------
Address 4B: Multifunc. Module        Labels: 6J0-959-441.clb
   Part No: 6J0 959 441 
   Component: MF-Modul       0007 0001  
   Coding: 0000001
   Shop #: WSC 77005 000 00000
   VCID: 70E58E1263A315C4E8-8024

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 6J0-035-153.clb
   Part No SW: 6J0 035 153     HW: 6J0 035 153 
   Component: Radio         009 0025  
   Revision: R0009000    Serial number: SEZAZ1H7219297
   Coding: 0501040002
   Shop #: WSC 04941 000 00000
   VCID: 61C3FB567849AC4C77-8034

No fault code found.

End-------------------------(Elapsed Time: 02:42)--------------------------

[Franciswat]

I had similar problem with my Polo 6R; I was no more able to autoscan engine because I always got an "engine cannot be reached" error (but anyway autoscan still goes on with the rest of addresses). Please take a look here to last ciclo's post. I solved that issue thanks to his solutions:

viewtopic.php?f=56&t=70398&start=150

[kowaltom99]

I finally solved the problem. I've read on Spanish Seat forum, that sometimes newer CAN gateway has a problem with connection to older modules (e. g. engine).
I've bought older BCM 7H0937089D.
I've changed back CAN wires from IC to BCM. After replacing BCM - everything works well. No errors, I can make full autoscan using VCDS.
It seems that BCM 7H0937090B was too new for my car (my car is 2008).

I have original light swith AUTO from Seat Ibiza - this weekend the final assembling - adding Auto light mode.