Current draw of HEX-V2 USB Interface?

   #1  

VWT6

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How much current the HEX-V2 USB Interface draws when connected to OBD-connector and USB is NOT connected to computer? Any difference when the USB is connected to a computer and VCDS is running?

The reason for my question is intermittent quiescent current fault I get on my car (VW T6 MY 2016). Having the HEX-V2 connected overnight is certainly a factor if I'm already on the edge of triggering the "fault". It seems that at least Address 61: Battery Regul.is active even the car is fully shut down (doors locked etc.) - it still communicates with VCDS.

Of course I could disconnect the cable... but it is so convenient to have it hooked up all the time :rolleyes: for monitoring quiescent current!

Code:
Sunday,09,July,2017,17:35:06:38894
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 17.6.0.2 (x64)  HEX-V2 CB: 0.4341.4
Data version: 20170602 DS274  
www.Ross-Tech.com


VIN: WV1ZZZ7HZGH07XXXX   License Plate: 
Mileage: 26210km-16286mi   Repair Order: 



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


Chassis Type: 7H 
Scan: 01 02 03 04 08 09 10 13 15 17 18 19 20 22 25 55 5F 61 69 6E
         
 
VIN: WV1ZZZ7HZGH071671   Mileage: 26210km-16286miles
-------------------------------------------------------------------------------
Address 01: Engine (2D2D2-CXFA)       Labels:. 04L-907-309-V2.clb
   Part No SW: 04L 906 056 KF    HW: 04L 907 445 
   Component: R4 2.0l TDI   H02 3809  
   Revision: 23002001    
   Coding: 0025401C437601080000
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_ECM20TDI03004L906056KF 004005
   ROD: EV_ECM20TDI03004L906056KE_004.rod
   VCID: 7BA0FD5D636C1E3F1A3-802E

1 Fault Found:
31103 - SCR NOx Catalyst Bank 1 
          P20EE 00 [096] - Efficiency too Low
          Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: N/A

-------------------------------------------------------------------------------
Address 02: Auto Trans (J743)       Labels:. 0BH-927-711.clb
   Part No SW: 0BT 300 011 S    HW: 0BH 927 711 G
   Component: DSG DQ500-7A  H11 5220  
   Revision: 00H11V01    
   Coding: 0014
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_TCMDQ500021 001001
   ROD: EV_TCMDQ500021_001_VW36.rod
   VCID: 3E26344930FECB177DD-806A

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 7E0-907-37x-MK100ESC.clb
   Part No SW: 7E0 907 379 Q    HW: 7E0 907 379 N
   Component: ESC           H05 0132  
   Revision: 00000000    Serial number: 42955000000178
   Coding: 557EC0982569867FAA7B037DA483619678F700
   Shop #: WSC 02739 790 50316
   ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
   ROD: EV_Brake1ESCCONTIVN75XGP2_011_VN35.rod
   VCID: 40DA4AB14A0ABDE70F1-8014

No fault code found.

-------------------------------------------------------------------------------
Address 04: Steering Angle (G085)       Labels:* 6R0-959-654.clb
   Part No SW: 6R0 959 654     HW: 6R0 959 654 
   Component: LENKW.SENSOR  H07 0070  
   Serial number: 09111513470898
   Coding: 01
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_LWSKLOVW25X 005001
   ROD: EV_LWSKLOVW25X_VW25.rod
   VCID: 7EA6F449707E0B173DD-802A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 7E5-907-047.clb
   Part No SW: 7E0 907 047 L    HW: 7E0 907 047 L
   Component: Climatic-T5   H22 0607  
   Revision: 00001002    
   Coding: 0000000003
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_ClimaticT5 A01003
   ROD: EV_ClimaT5Basis.rod
   VCID: 3330157D0BBC167F823-8066

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7E0-937-BCM-V1.clb
   Part No SW: 7E0 937 090     HW: 7E0 937 090 
   Component: BCM PQ25 Max4 H80 0736  
   Revision: B9080001    Serial number: 0771 316150034
   Coding: 62F8793A0A21209301284F602DEB87F4C0B47389604579603204003F0860
   Shop #: WSC 32611 002 104857
   VCID: 688AB211027AA5A7E71-803C

   Subsystem 1 - Part No: 5K7 955 559 B  Labels: 5K7-955-559.CLB
   Component: RLS 181115 03  37  0059 
   Coding: 0228EE

   Subsystem 2 - Part No SW: 7E0 959 801 H    HW: 7E0 959 801 H  Labels: 7E0-959-80X-V2.CLB
   Component: J386__TSG_FT  003 8654 
   Serial number: KU0KU005111553091947
   Coding: 0400A0

   Subsystem 3 - Part No SW: 7E0 959 802 H    HW: 7E0 959 802 H  Labels: 7E0-959-80X-V2.CLB
   Component: J387__TSG_BT  003 8654 
   Serial number: KU0KU004111553084929
   Coding: 1400A0

   Subsystem 4 - Part No SW: 7E0 959 442 A    HW: 7E0 959 442 A  Labels: 3C8-959-537.CLB
   Component: E221__MFL-DC1  H02 0103 
   Serial number: 29150002250340125463
   Coding: B4FFFF

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 7E0-919-475.clb
   Part No SW: 7E0 919 475 N    HW: 7N0 919 475 
   Component: PARKHILFE 8K  H06 0205  
   Revision: --------    Serial number: 28261528702131
   Coding: 31810C
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_VW75XParkAssis8K 001007
   ROD: EV_VW75XParkAssis8K_001_VN75.rod
   VCID: 3D2433453DF8D00F647-8068

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 7N0-907-572.clb
   Part No SW: 7N0 907 572 A    HW: 7E0 907 572 
   Component: ACC Bosch PQx H03 0110  
   Serial number: 20111577093889
   Coding: 00005800FE0779
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_ACCBEGVW361 001004
   ROD: EV_ACCBEGVW361_SK34.rod
   VCID: 343216610EB211479B9-8060

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 7E0 959 655 E    HW: 7E0 959 655 E
   Component: VW10Airbag00A 008 0016  
   Revision: --------    Serial number: 003PJ000U6TQ
   Coding: 000000000000000000000000000000003041
   Shop #: WSC 02734 790 50316
   ASAM Dataset: EV_AirbaVW10BPAVW12X 001028
   ROD: EV_AirbaVW10BPAVN750.rod
   VCID: 382A225112DAF527B71-806C

   Crash sensor for side airbag: driver side: 
   Serial number: 3495ZRB405T3FSTQF8A8

   Crash sensor for side airbag: front passenger side: 
   Serial number: 3505ZRB40693FGI6B1BE

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb
   Part No SW: 7E0 920 870 L    HW: 7E0 920 870 L
   Component: KOMBI         H05 1008  
   Serial number: 00000000000000
   Coding: 160F010300
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A05730
   ROD: EV_Kombi_UDS_VDD_RM09_005_VN35.rod
   VCID: 323E1079F4A61F77895-8066

No fault code found.

-------------------------------------------------------------------------------
Address 18: Aux. Heat (J364)       Labels:| 7E0-963-27X-18.clb
   Part No SW: 7E0 963 272 B    HW: 7E0 963 272 A
   Component: STH-T5GP2     002 0009  
   Coding: 5801
   Shop #: WSC 45626 002 1048576
   ASAM Dataset: EV_AuxilParkiHeateWOST5G2 001013
   ROD: EV_AuxilParkiHeateWOST5G2_VN75.rod
   VCID: 2B000D1DD38C4EBFCA3-807E

   Remote Control Auxiliary Heater: 
   Subsystem 1 - Part No SW: 5Q0 963 513 A    HW: 5Q0 963 513 A
   Component: R149 T91-LIN  003 0301 
   Serial number: 00000000000001224104

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7E0-909-901.clb
   Part No SW: 7E0 909 901     HW: 7E0 937 090 
   Component: GW-K-CAN TP20 H80 0736  
   Revision: B9080001    
   Coding: 042205
   Shop #: WSC 32611 002 104857
   VCID: 688AB211027AA5A7E71-803C

No fault code found.

-------------------------------------------------------------------------------
Address 20: High Beam Assist. (J844)       Labels:| 8S0-857-511.clb
   Part No SW: 7E0 857 511 F    HW: 7E0 857 511 C
   Component: FLA           H10 0003  
   Revision: AA001001    
   Coding: 040400E200000000000000
   Shop #: WSC 02739 790 50316
   ASAM Dataset: EV_HighBeamAssisAU316 001004
   ROD: EV_HighBeamAssisAU316_VW36.rod
   VCID: 2D040305ED98408FD47-8078

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD (J492)       Labels:* 0CQ-907-554.clb
   Part No SW: 0AY 907 554 L    HW: 0CQ 525 130 A
   Component: Haldex4Motion H53 7620  
   Serial number: HA1-00023.09.15
   Coding: 0505
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_AllWheelContrHA1VW37X 002015
   ROD: EV_AllWheelContrHA1VW37X_002_VW36.rod
   VCID: 54F276E1AE723147BB9-8000

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 1008  
   Serial number:               
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
   ROD: EV_Immo_UDS_VDD_RM09_VW21.rod
   VCID: 6A8EC8191CF697B7F15-803E

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range (J431)       Labels:. 6R0-907-357.clb
   Part No SW: 6R0 907 357 C    HW: 6R0 907 357 B
   Component: AFS-ECU       005 0050  
   Revision: --------    Serial number: --------------
   Coding: 0FCA020001000000
   Shop #: WSC 02757 790 50316
   ASAM Dataset: EV_HeadlRegulVWLWRCC 002006
   ROD: EV_HeadlRegulVWLWRCC.rod
   VCID: 3A2E38592CD6E737415-806E

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-STD2.clb
   Part No SW: 5K7 035 200 D    HW: 5K7 035 200 D
   Component: MU-S--ER      H22 0245  
   Serial number: VWZAZ2R8026503
   Coding: 065700003C00000011110001000808001F0100940020010003
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_MUStd4CTSAT 001022
   ROD: EV_MUStd4CTSAT_VW26.rod
   VCID: 2514FB25B56878CF1C7-8070

No fault code found.

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels:. 1K0-907-534.clb
   Part No SW: 7E0 907 534     HW: 7E0 937 090 
   Component: Batt.regelung H80 0736  
   Serial number: 0771 316150034
   Coding: 330B1A73
   Shop #: WSC 02739 790 00000
   VCID: 688AB211027AA5A7E71-803C

   Subsystem 1 - Part No SW: 7E0 915 181 G    HW: 7E0 915 181 G
   Component: J367-BDM  H08 0223 
   Serial number: 62301K19441261977163

1 Fault Found:
02256 - Quiescent Current 
            001 - Upper Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100001
                    Fault Priority: 7
                    Fault Frequency: 18
                    Reset counter: 12
                    Mileage: 0 km
                    Time Indication: 0
                    Date: 2017.06.20
                    Time: 02:27:29


-------------------------------------------------------------------------------
Address 69: Trailer (J345)       Labels:. 1K0-907-383-V2.clb
   Part No SW: 1K0 907 383 H    HW: 1K0 907 383 G
   Component: Anhaenger     H12 0130  
   Revision: 3B001001    Serial number: 00000385929434
   Coding: 410D000103000000
   Shop #: WSC 02739 790 00000
   VCID: 323E1079F4261F77895-8066

No fault code found.

-------------------------------------------------------------------------------
Address 6E: Ctrl Head Roof (J702)       Labels:. 7E5-919-037-W2.clb
   Part No SW: 7E5 919 037 G    HW: 7E5 919 037 G
   Component: Dachdisplay   H15 0185  
   Revision: 10100011    Serial number: 406721        
   Coding: 000103
   Shop #: WSC 02759 790 00000
   VCID: 35342B650548084FAC7-8060

No fault code found.

End----------(Elapsed Time: 01:24, VBatt start/end: 12.3V/12.2V)-----------
 
Last edited:
   #2  

Sebastian

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Mind posting an Auto-Scan? There are a few things not relevant to an interface being connected and VW has already addressed some things via software updates. There are some easy ways to monitor quiescent current, using VCDS that is... ;)
 
   #3  

VWT6

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Besides quiescent current issue I just noticed that the latest scan (above, top of this thread) does not have any more freeze frame data for the engine fault which was there before (see previous scan below). Both scans have aggressive mode and freeze frame boxes ticked. I haven't cleared the fault. The same with VCDS 17.1.3 - no freeze frame data. The car?
Code:
Sunday,14,May,2017,20:57:39:38894
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 17.4.2.3 (x64)  HEX-V2 CB: 0.4336.4
Data version: 20170505 DS270.4
www.Ross-Tech.com


VIN: WV1ZZZ7HZGH07XXXX   License Plate: 


Chassis Type: 7H
Scan: 01 02 03 04 08 09 10 13 15 17 18 19 20 22 25 55 5F 61 69 6E
         
 
VIN: WV1ZZZ7HZGH071671   Mileage: 23000km-14291miles
-------------------------------------------------------------------------------
Address 01: Engine (2D2D2-CXFA)       Labels: 04L-907-309-V2.clb
   Part No SW: 04L 906 056 KF    HW: 04L 907 445 
   Component: R4 2.0l TDI   H02 3809  
   Revision: 23002001    
   Coding: 0025401C437601080000
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_ECM20TDI03004L906056KF 004005
   ROD: EV_ECM20TDI030_004_VN75.rod
   VCID: 7BA0FD5D636C1E3F16E-802E

1 Fault Found:
31103 - SCR NOx Catalyst Bank 1 
          P20EE 00 [100] - Efficiency too Low
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 22931 km
                    Date: 2016.01.23
                    Time: 19:32:28

                    Engine speed: 1973.25 /min
                    Normed load value: 64.3 %
                    Vehicle speed: 107 km/h
                    Coolant temperature: 90 °C
                    Intake air temperature: 14 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.593 V
                    Dynamic environmental data: 20 96
                    Unlearning counter according OBD: 40
                    Air mass at air mass meter 1: 147.6 kg/h
                    Extern.temp.sens.1 bank 1: raw value: 13.5 °C
                    Mass airflow sensor 1 bank 1 airflow: raw value: 630.5 mg/stroke
                    Throttl.valve adapt. 1 bank 1: posit feedback - Act.value: 58.98 %
                    NOx sensor before SCR cat conv: offset correction factor: 0 ppm
                    NOx sensor after SCR cat conv: offset correction factor: 69 ppm
                    Reducing agent quality sensor: urea concentration: 145.92 %
                    Reducing agent quality sensor: raw temperature value: 0.0 °C

Readiness: N/A

-------------------------------------------------------------------------------
 
   #4  

Eric

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I've noticed on the 1.8 TSI that when a DTC isn't found in non-aggressive mode, it doesn't have freeze frame (confirmed with ODIS). Can you do a scan in non-aggressive mode, see if the DTC goes away?
 
   #5  

Eric

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How much current the HEX-V2 USB Interface draws when connected to OBD-connector and USB is NOT connected to computer?
90-100mA is what I'm seeing.
Any difference when the USB is connected to a computer and VCDS is running?
Without VCDS, I measured 32mA on the 12V side. No appreciable difference when it's actively talking to a module over CAN.
 
   #6  

VWT6

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I've noticed on the 1.8 TSI that when a DTC isn't found in non-aggressive mode, it doesn't have freeze frame (confirmed with ODIS). Can you do a scan in non-aggressive mode, see if the DTC goes away?
Thanks for all the info.

Correct, did a new scan in non-aggressive mode and the DTC went away. And, when scanned again in aggressive mode DTC came back on.

No frame freeze data either way - box ticked always. And, of course, the same when communicating only to 01-Engine/Fault codes.

Perhaps this is the explanation why "real VW-tester" at the dealer doesn't see always the DTC's what the VCDS sees. Happened once when I was new to VCDS. Eventually, then after a couple of weeks, the VW-tester also showed the DTC. I'm impressed, again! :thumbs:

Anyways, I'll keep track on this aggressive/nonaggressive scan + freeze frame data thing, and let you know - unless you tell me otherwise. Thanks.

PS. I was told that quiescent current alarm trigger in this vehicle is at about 70 mA (from memory of service technician).
 
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