Trailer charging relay J941 on 1K0 trailer module doesn't click

   #1  

iichel

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Many years ago I installed an original VW trailer installation.
- Detachable trailer hook
- OEM 1K0 module
- OEM wiring loom with 13-pin socket

full scan:
Code:
Thursday,04,March,2021,18:33:14:11868
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 21.3.0.0 (x64)  HEX-V2 CB: 0.4543.4
Data version: 20210226 DS325.0
www.Ross-Tech.com

Dealer/Shop Name: iichel retrofitting
Workshop Code: 470 31889 031889

VIN:    License Plate:
Mileage: 173700km-107932mi   Repair Order:


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


Chassis Type: 6R-VW25 (7E0)
Scan: 01 02 03 04 08 09 10 15 17 19 25 37 44 55 56 69 77

VIN:    Mileage: 173700km-107932miles

01-Engine -- Status: OK 0000
02-Auto Trans -- 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: Malfunction 0010
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
37-Navigation -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
69-Trailer -- Status: OK 0000
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CAYB)       Labels:. 03L-906-023-CAY.clb
   Part No SW: 03L 906 023 MG    HW: 03L 907 425 B
   Component: R4 1.6l TDI   H33 9978
   Revision: --H33---    Serial number:             
   Coding: 00254016002400080000
   Shop #: WSC 00788 648 00255
   ASAM Dataset: EV_ECM16TDI02103L906023MG 003012
   ROD: EV_ECM16TDI02103L906023LK_SK25.rod
   VCID: 77AB169D3F4FA173BE9-8022

No fault code found.

-------------------------------------------------------------------------------
Address 02: Auto Trans
Cannot be reached

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 6R0-907-37x-ESP82.clb
   Part No SW: 6R0 907 379 AK    HW: 6R0 907 379 AF
   Component: ESP8.2i front H05 0001
   Revision: --------  
   Coding: 210228E3436F00B9842914E2C2D100421700
   Shop #: WSC 31889 470 31889
   VCID: 074B665D4F6FD1F3CE9-8052

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels: 6R0-907-044.clb
   Part No SW: 6R0 907 044 E    HW: 6R0 907 044 E
   Component: Climatronic   H09 0609
   Revision: V0000000  
   VCID: 3537DC95654393636C5-8060

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7E0-937-BCM-V1.clb
   Part No SW: 7E0 937 090 C    HW: 7E0 937 090 C
   Component: BCM PQ25 Max4 H82 0752
   Revision: B9082001    Serial number: 4000 097180864
   Coding: 3CB02BBF68EB2C0093380EB17FEB9FD15A80670F600530C1200000000000
   Shop #: WSC 31889 123 05683
   VCID: 2B03FAEDB307D5930A1-807E

   Subsystem 1 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
   Component: RLS 240111 05  54  0403
   Coding: 03302D

   Subsystem 2 - Part No SW: 6R0 959 801 AB    HW: 6R0 959 801 AB  Labels: 6R0-959-801.CLB
   Component: J386__TSG_FT  007 1611
   Serial number: KU0-KU021.01.1116042
   Coding: 18BC30

   Subsystem 3 - Part No SW: 6R0 959 802 AD    HW: 6R0 959 802 AD  Labels: 6R0-959-802.CLB
   Component: J387__TSG_BT  007 1611
   Serial number: KU0-KU028.01.1110654
   Coding: 08BC30

   Subsystem 4 - Part No: 1K8 951 171 A
   Component: DWA-Sensor 00  001 0103
   Coding: 000000

   Subsystem 5 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H03 1301
   Coding: 000000

   Subsystem 6 - Part No: 1K8 951 171 A
   Component: DWA-Sensor 00  001 0103
   Coding: 000000

   Subsystem 7 - Part No SW: 5G0 959 442 H    HW: 5G0 959 442 H
   Component: E221__MFL-DC1  H17 0103
   Serial number: 46170001001030017151
   Coding: A5FFFF

   Subsystem 8 - Part No SW: 6R0 959 811 G    HW: 6R0 959 811 G
   Component: J388__TSG_HL  007 1611
   Serial number: KU0-KU012.01.1115045
   Coding: 08BC32

   Subsystem 9 - Part No SW: 6R0 959 812 G    HW: 6R0 959 812 G
   Component: J389__TSG_HR  007 1611
   Serial number: KU0-KU019.01.1112796
   Coding: 08BC32

1 Fault Found:
04194 - Vehicle Status with Under-Voltage
            002 - Lower Limit Exceeded
             Freeze Frame:
                    Fault Status: 01100010
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 137
                    Mileage: 173700 km
                    Time Indication: 0
                    Date: 2015.07.26
                    Time: 18:31:03


-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 6R0-919-475.clb
   Part No SW: 6R0 919 475 B    HW: 7E0 919 475
   Component: PARKHILFE 4K  H10 0012
   Revision: --------    Serial number: 12801102200011
   Coding: 118101
   Shop #: WSC 31889 123 05683
   ASAM Dataset: EV_VW250ParkiAssis2 S01008
   ROD: EV_VW250ParkiAssis2.rod
   VCID: 3D27C4B55DF34B23A45-8068

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 6R0 959 655 K    HW: 6R0 959 655 K
   Component: VW10Airbag01M H09 0020
   Revision: --------    Serial number: 003GX00ETS2$
   Coding: 00314D
   Shop #: WSC 00788 648 00255
   ASAM Dataset: EV_AirbaVW10BPAVW250 A01001
   ROD: EV_AirbaVW10BPAVW250.rod
   VCID: 4ACD9F691C3DEC9B117-801E

   Crash sensor for side airbag: driver side:
   Serial number: 3575HRB404V0ATOC80M4

   Front Passenger's Side Airbag Crash Sensor:
   Serial number: 3585HRB404R0ATOCFGVX

   Rear Side Airbag Crash Sensor (on driver's side):
   Serial number: 3515RRB4055058P0D0DS

   Passenger side rear thorax airbag crash sensor:
   Serial number: 3525RRB404T0BEE6MOG9

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 6R0 920 861 F    HW: 6R0 920 861 F
   Component: KOMBI         H05 0304
   Serial number: 00000000000000
   Coding: 140E00
   Shop #: WSC 12345 123 45678
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04086
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW25.rod
   VCID: 3829D5A172D16E0B773-806C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7E0-909-901.clb
   Part No SW: 7E0 909 901     HW: 7E0 937 090 C
   Component: GW-K-CAN TP20 H82 0752
   Revision: B9082001  
   Coding: 002200
   Shop #: WSC 31889 123 05683
   VCID: 688945E162713E8B273-803C

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234
   Component: IMMO          H05 0304
   Serial number:             
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
   ROD: EV_Immo_UDS_VDD_RM09_VW21.rod
   VCID: 6A8D3FE97CFD0C9B317-803E

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation (J0506)       Labels:. 1T0-035-680.clb
   Part No SW: 1T0 035 680 F    HW: 1T0 035 680 F
   Component: RNS-MID       H61 3970
   Revision: AB001001    Serial number: VWZ6Z7R5312684
   Coding: 00000400000000200001
   Shop #: WSC 05314 123 12345
   VCID: 313FE885912BBF4330D-8064

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: None
   VCID: 55F77C15CC43B3638C5-8000

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range (J431)       Labels:. 6R0-907-357.clb
   Part No SW: 6R0 907 357     HW: 6R0 907 357
   Component: LWR-ECU       H02 0070
   Revision: --------    Serial number: --------------
   Coding: 0112000001000000
   Shop #: WSC 00788 648 00255
   ASAM Dataset: EV_HeadlRegulVWLWRPt 001004
   ROD: EV_HeadlRegulVWLWRPt_VW25.rod
   VCID: 77AB169D3F4FA173BE9-8022

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J0506)       Labels:. 1T0-035-680.clb
   Part No SW: 1T0 035 680 F    HW: 1T0 035 680 F
   Component: RNS-MID       H61 3970
   Revision: AB001001    Serial number: VWZ6Z7R5312684
   Coding: 00000400000000200001
   Shop #: WSC 05314 123 12345
   VCID: 313FE885912BBF4330D-8064

No fault code found.

-------------------------------------------------------------------------------
Address 69: Trailer (J345)       Labels:. 1K0-907-383-V2.clb 
Part No SW: 1K0 907 383 E    HW: 1K0 907 383 E 
Component: Anhaenger     H07 0080   
Revision: 3A002002    Serial number: 00000116932377 
Coding: 0100000100000000 
Shop #: WSC 12345 123 12345 
VCID: 2F3BEEFD871FA9B30EB-807A
No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone (J412)       Labels:| 7P6-035-730.clb
   Part No SW: 7E0 035 730 A    HW: 7E0 035 730 A
   Component: TELEFON       H05 0550
   Revision: 1B001001    Serial number: 00007669233345
   Coding: 0800000000000210
   Shop #: WSC 00788 648 00255
   ASAM Dataset: UHVNA A01009
   ROD: EV_UHVNA_A01_VW25.rod
   VCID: 1F1B1E3DF73F3933969-804A

No fault code found.

End----------(Elapsed Time: 01:57, VBatt start/end: 12.1V/13.9V)-----------

Not the most recent scan but it will do.

The trailer, for those that don't like to scroll:

Code:
Address 69: Trailer (J345)       Labels:. 1K0-907-383-V2.clb 
Part No SW: 1K0 907 383 E    HW: 1K0 907 383 E 
Component: Anhaenger     H07 0080   
Revision: 3A002002    Serial number: 00000116932377 
Coding: 0100000100000000 
Shop #: WSC 12345 123 12345 
VCID: 2F3BEEFD871FA9B30EB-807A
No fault code found.

Part of the installation is the J941 charging relay, more or less a terminal 15 relay that is operated by trailer module T12/5 and goes to T13/10 on the trailer socket.

RvgQsDM.png


The problem is, it doesn't click.
The relay is fine, it works perfectly well on a terminal 15 to operate it (and it always did) but I'm looking for a way to make it work.

I played around with bit 4 (00/01/02) for inactive/active and active while something is connected. No luck. The output tests also refuse to do something. It's refused by the module.
The same was done for byte 0 with the 'transporter compatibility mode'

Any ideas?
 
   #2  

n4s

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When I installed trailer in the Tiguan, the 2009 model didn't had the extra pin to support "fridge". Models with that pin appear around 2011. I see that Relay is controlled by trailer unit and looking for that "E" reference, I see that module is from 2008.

For reference I put my module here that Shows HW10:
Address 69: Trailer (J345) Labels:. 1K0-907-383-V2.clb
Part No SW: 1K0 907 383 G HW: 1K0 907 383 G
Component: Anhaenger H10 0110
Revision: 3B001001 Serial number: 00000194877355
Coding: 410D000101000000
Shop #: WSC 12345 123 01234
VCID: 313EE329E125058318F-8064

Also, you don't have the function active. You can try to put 01 in byte 4, to activate the relay function. If it doesn't work, new module will be the way.
 
   #3  

iichel

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I'm currently running an F unit from 2014 - it does the same. It does have the pin installed.
 
   #4  

n4s

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and what coding?
 
   #5  

iichel

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Tried many codings for bytes 0 and 4.
Byte 1 00/0D
Byte 3 01

No difference
 
   #6  

VWT6

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Engine running?
On Transporter T6 (the wiring diagram snippet) the relay is activated only when engine is running.
 
   #7  

iichel

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Yes running engine
 
   #8  

iichel

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For now I've solved it by connecting the J941 to a terminal 15 again.
 
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