I didn't check Uwe's car but ... I suspect they'll be the same based on the direct CAN connections. I did Andy's 2015 GTI with Engine Code: CNTA
Structure borne sound control module -J869-
6-pin connector T6cu
1 = Signal (+), actuator
2 = Signal (-), actuator
3 = Power (15) (from fuse SC34)
4 = Ground (31)
5 = CAN-L
6 = CAN-H
The CAN connections are direct to
B384 - Powertrain CAN bus high connection 2 and
B391 - Powertrain CAN bus low connection 2 in the diagrams.
The "Structure-borne sound actuator , CHHB,CNTA,CXCA,CXDA from January 2014" diagram # 34 shows some sorta
TIUL - Coupling point in interior, bottom left station so I'd splice into that for CAN high/low if your car has it. They hit the CAN GW (J553) at terminals T20/16 and T20/6 if you make an adapter at the module. (I never splice CAN wires where they could corrode under the hood)
The
R214 - Structure-borne sound actuator speaker is a direct shot from J869 T6cu/1 to T2gb/1 -and- T6cu/2 to T2gb/2.
If that isn't enough you may want to invest in a $35 pass for a 1 day
erWin subscription.
http://wiki.ross-tech.com/wiki/index.php/Official_Factory_Repair_Information