Dropping voltage 1volt at Tv22 Audi Q5 2009.

[Tomeri]

Is it possible to have a new 35mm2 cable between alternator and Tv22 connection block direct to reducing the voltage drop . The cable between alternator and the starter is the problem of the voltage dropp -1volt. And Audi would like to charge me 2000 euro for the job. Or is it possible to burn relays over time with this idea. Im looking forward on good coments on this.

[Tomeri]

Tv22 connection block problem.


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[Tomeri]

Tv22 connection block problem.


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IMG_1013.jpg
Here is the TV22 connection box near the engine.


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[Tomeri]

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[Smac770]

https://www.audizine.com/forum/showt...with-new-cable

[Tomeri]

Thank you for the information on this topic. I will order a new alternator cable. I must isolate the old alternator cable at the alternator and mount the new cable from the alternator to TV22. Here is the old alterator cable.IMG_1013.jpg


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[Tomeri]

IMG_1073.jpg


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[Tomeri]

Bought cable today which I will install tomorrow.IMG_1093.jpg


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[Tomeri]

Now it works fine. Thanks for the good information.IMG_1100.jpg
IMG_1099.jpg
IMG_1098.jpg


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[Smac770]

Oh, so a 2.0 TDI. Wasn't sure what engine you were working with. The V6 have the alternator down under the right side. Definitely a much easier fix with a 4-cyl. Congrats on the DIY.

[Tomeri]

It seems to work super well.

1. Have you had any more problems with your old alternator cable that is still connected at the other end.

2. Have there been any other problems with the car's electricity since you did this work?


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[Smac770]

No, everything is fine, other than the normal issues of aging electronics and wiring. I wrapped the old alternator cable end up in rubber and electrical tape and zip tied it to the side. Been a non issue since.

I think the electronics in my J367 or my J533 have aged such that they are reading the car voltage too low. My battery would be 12.4/12.5 V but my measuring values are reporting 12.1/12.2 V. I've already confirmed the voltage is fine at the plug into the devices. But I guess after 14 years, a few problems are to be expected.

But the voltage drop from alternator to battery is now back to acceptable range, a few tenths of a volt.

[Tomeri]

Hello. The car now charges 14v which is good. But something drains the batteries when the car is left standing for a few days. Maybe the car doesn't go into sleep mode because of something. Any ideas on this?.IMG_2868.jpg
IMG_2869.jpg
IMG_2870.jpg
IMG_2871.jpg
IMG_2872.jpg


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[Smac770]

Not sure what all those screen caps are suppose to convey. You have VCDS, run the autoscan, save (not print) the log to a file, post the file content here so it can be seen.

You could have some device keeping the car awake, not uncommon. A failed amp unit can keep rewaking bringing back up the infotainment bus members, etc. Another had a problem with the electromechanical steering rack that kept waking the car systems back up.

The normal approach is to start by manually latching the doors and trunk and waiting a few hours and then measuring the voltage drop across all the fuses on both ends of the dash and the right rear of the trunk and converting those to current flow (scalar varies with fuse type and size; voltage drop fuse charts are on the internet) and trying to what fuses are still supplying substantial current flow when everything should be asleep.

[Tomeri]

Wednesday,31,May,2023,15:03:21:00009
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 20.4.2.0
Data version: 20200730 DS317.0
www.Ross-Tech.com


VIN: WAUZZZ8R2AA052341 License Plate: AAA
Mileage: 217420km-135098mi Repair Order: 123



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


Chassis Type: 8R-AU48 (8T0)
Scan: 01 02 03 05 08 09 15 16 17 19 20 42 46 52 53 55 56 62 69 72


VIN: WAUZZZ8R2AA052341 Mileage: 217420km-135098miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
20-High Beam Assist. -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
69-Trailer -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (J623-CAHA) Labels:| 03L-906-022-CAG.clb
Part No SW: 03L 906 019 AS HW: 03L 906 022 B
Component: R4 2.0l TDI H03 9977
Revision: 11H03---
Coding: 01210023240F2920
Shop #: WSC 41842 004 1048576
ASAM Dataset: EV_ECM20TDI03L906019AS A01011
ROD: EV_ECM20TDI03L906019AR.rod
VCID: 7CFDA932F7EB6E664F-8028

1 Fault Found:
7144 - Please Check DTC Memory in CAN Gateway (J533)
U1008 00 [047] - -
[New feature! Extended UDS fault detail is only supported by current gen. interfaces]
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 216194 km
Date: 2023.03.26
Time: 14:45:24

Engine speed: 881.00 /min
Normed load value: 23.1 %
Vehicle speed: 0 km/h
Coolant temperature: 69 °C
Intake air temperature: 22 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 13.820 V
Unlearning counter according OBD: 40
Crankshaft speed (RPM): 881.0 /min
Vehicle speed: 0.00 km/h
Accelerator position: 0.00 %
Vehicle voltage terminal 30: 13820 mV
Coolant temperature: 69.2 °C
Generator power: 308822 W
Engine torque: 40.6 Nm

Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217) Labels:| 0B5-927-156.clb
Part No SW: 8R2 927 156 C HW: 0B5 927 156 K
Component: 0B5 20 TDIRdW H03 0002
Revision: --H03--- Serial number: 0000001168
Coding: 000001
Shop #: WSC 04940 001 00001
ASAM Dataset: EV_TCMDL501021 A03002
ROD: EV_TCMDL501021_A03.rod
VCID: 3D7B6436AC71A76E38-8068

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels:. 8R0-907-379-V1.clb
Part No SW: 8R0 907 379 M HW: 8R0 907 379 M
Component: ESP8 quattro H06 0020
Revision: -------- Serial number: --------------
Coding: 0DD548
Shop #: WSC 58839 001 1048576
VCID: 4A913FEAE5BF00D68D-801E

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393) Labels:. 8K0-907-064-05.clb
Part No SW: 8K0 907 064 DP HW: 8K0 907 064 DP
Component: BCM2 1.1 H02 0326
Revision: 00002001
Coding: 010500
Shop #: WSC 06335 000 00000
VCID: 0103D8C69809038E1C-8054

Subsystem 1 - Part No SW: 8T0 959 754 D HW: 8T0 959 754 D
Component: FBSAUDIB8 IDG H37 0060
Serial number: 0509000062145012

Subsystem 2 - Part No SW: 8K0 905 852 D HW: 8K0 905 852 D
Component: J764 ELV MLB H37 0042
Serial number: 0209000081848014

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255) Labels: Redir Fail!
Part No SW: 8T1 820 043 AA HW: 8T1 820 043 AA
Component: KLIMA 1 ZONE H06 0140
Revision: A1000000 Serial number: 0103.09.080283
Coding: 36000000
Shop #: WSC 42043 004 104857
VCID: 70E58D02A3A31A06E3-8024

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels:. 8K0-907-063.clb
Part No SW: 8K0 907 063 P HW: 8K0 907 063 P
Component: BCM1 1.0 H28 0380
Revision: 10028001 Serial number: 00000000499223
Coding: 2600D0914074AF010001000300001D0D0F1C67080001010100 0000
Shop #: WSC 58839 001 1048576
VCID: 3C7D6932BF6BAE660F-8068

Subsystem 1 - Part No SW: 8R1 955 119 A HW: 8R1 955 119 Labels: 1KX-955-119.CLB
Component: WWS416 091026 H10 0041
Serial number: 90243014091024021714
Coding: 01DD13

Subsystem 2 - Part No SW: 8K0 955 559 HW: 8K0 955 559 Labels: 8K0-955-559.CLB
Component: RLS H04 0003
Serial number: 10655612
Coding: 024D25

Subsystem 3 - Part No SW: 8K0 941 531 AL HW: 8K0 941 531 AL
Component: E1 - LDS H08 0090
Serial number: 00000000002210092215

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234) Labels:* 8R0-959-655.clb
Part No SW: 8R0 959 655 C HW: 8R0 959 655 C
Component: AirbagVW-AU10 H39 0560
Serial number: 003FQD05RCBQ
Coding: 30423331313030303030554A304C38523053
Shop #: WSC 06335 000 00000
ASAM Dataset: EV_AirbaAU10SMEAU416 002004
ROD: EV_AirbaAU10SMEAU416.rod
VCID: 448D11D2CF9BD6A677-8010

Crash sensor for side airbag: driver side:
Serial number: 6334MSME4C237669M

Crash sensor for side airbag: front passenger side:
Serial number: 6344MSME4C241942C

Crash sensor for side airbag: rear: driver side:
Serial number: 6352QSME1D404426B

Crash sensor for side airbag: rear: passenger side:
Serial number: 6362QSME0542291CD

Crash sensor for front airbag: driver side:
Serial number: 63732SME07403E38

Crash sensor for front airbag: front passenger side:
Serial number: 63832SME4F400220R

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527) Labels:. 8K0-953-568.clb
Part No SW: 8K0 953 568 E HW: 8K0 953 568 E
Component: Lenks.Modul H16 0014
Revision: -------- Serial number: 90315IJL0006Q
Coding: 000007
Shop #: WSC 06335 000 00000
VCID: 3C7D6932BF6BAE660F-8068

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285) Labels:. 8R0-920-xxx-17.clb
Part No SW: 8R0 920 930 D HW: 8R0 920 930 D
Component: KOMBIINSTR. H10 0255
Revision: 00000000 Serial number: CJL4072C9
Coding: 0F06220002000008010000
Shop #: WSC 06335 000 00000
VCID: 356B7C169C417F2EF0-8060

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533) Labels:. 8T0-907-468.clb
Part No SW: 8T0 907 468 S HW: 8T0 907 468 J
Component: GW-BEM 6CAN H06 0105
Revision: HB600050 Serial number: 5000H09A0680CC
Coding: 00C303
Shop #: WSC 06335 000 00000
VCID: 51A3288608E9330ECC-8004

3 Faults Found:
02071 - Local Databus
012 - Electrical Fault in Circuit
Freeze Frame:
Fault Status: 01101100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 27
Mileage: 216194 km
Time Indication: 0
Date: 2023.03.26
Time: 14:58:58

Freeze Frame:
Bin. Bits: 11111
Voltage: 13.80 V
Count: 6
Bin. Bits: 10000

02252 - Generator
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 27
Mileage: 216194 km
Time Indication: 0
Date: 2023.03.26
Time: 15:25:09

Freeze Frame:
Bin. Bits: 11111
Voltage: 13.70 V
Count: 6
Bin. Bits: 10000

00458 - Control Module for Battery Monitoring (J367)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 27
Mileage: 216194 km
Time Indication: 0
Date: 2023.03.26
Time: 15:25:09

Freeze Frame:
Bin. Bits: 11111
Voltage: 13.70 V
Count: 6
Bin. Bits: 10000


-------------------------------------------------------------------------------
Address 20: High Beam Assist. (J844) Labels:. 8K0-857-511.clb
Part No SW: 8K0 857 511 D HW: 8K0 857 511
Component: FLA H04 0004
Revision: AA001002
Coding: 02012064747464545425363E
Shop #: WSC 06335 000 00000
VCID: 3261470A6D2F6816D5-8066

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386) Labels:. 8K0-959-793.clb
Part No SW: 8K0 959 793 H HW: 8K0 959 793 D
Component: TSG FA H11 0306
Revision: Serial number: 0000009551368
Coding: 011D02204000440004
Shop #: WSC 06335 000 00000
VCID: 458B0CD6CCA1EFAE60-8010

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393) Labels:. 8K0-907-064-46.clb
Part No SW: 8K0 907 064 DP HW: 8K0 907 064 DP
Component: BCM2 1.1 H02 0326
Revision: 00002001 Serial number: 0123406077
Coding: 013A0620203900000420053280000000
Shop #: WSC 06335 000 00000
VCID: 0103D8C69809038E1C-8054

Subsystem 1 - Part No: 8K0 951 177
Component: DWA-Sensor H02 0040

Subsystem 2 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H03 1301

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387) Labels:. 8K0-959-792.clb
Part No SW: 8K0 959 792 H HW: 8K0 959 792 D
Component: TSG BF H11 0306
Revision: Serial number: 0000009587909
Coding: 011D02204000440004
Shop #: WSC 06335 000 00000
VCID: 448D11D2C79BD6A677-8010

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (J540) Labels: 8K0-907-801-V1.clb
Part No SW: 8K0 907 801 H HW: 8K0 907 801 H
Component: EPB Audi B8 H09 0100
Revision: 00000003 Serial number: 10000000358056
Shop #: WSC 00000 000 00000
VCID: 346D4112973B6626C7-8060

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range Labels: 8K0-907-357.clb
Part No: 8K0 907 357 B
Component: Dynamische LWR H01 0030
Revision: 00000001 Serial number:
Coding: 0000006
Shop #: WSC 06334 000 00000
VCID: 346D4112573B6626C7-8060

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503) Labels:. 8Tx-035-1xx-56.clb
Part No SW: 8T1 035 186 P HW: 8T1 035 186 P
Component: Concert3 H05 0310
Revision: 00000008 Serial number: AUZ5Z6I1296661
Coding: 05000480040501000159070000
Shop #: WSC 06335 000 00000
VCID: 448D11D2C79BD6A677-8010

Subsystem 1 - Part No SW: 8T0 919 603 E HW: 8T0 919 603 E
Component: Display

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388) Labels:. 8K0-959-795.clb
Part No SW: 8K0 959 795 C HW: 8K0 959 795 C
Component: TSG HL H10 0306
Revision: Serial number: 0000102198438
Coding: 010C02204000240004
Shop #: WSC 06335 000 00000
VCID: 428117CADD8FD89645-8016

No fault code found.

-------------------------------------------------------------------------------
Address 69: Trailer (J345) Labels:. 8K0-907-383.clb
Part No SW: 8K0 907 383 E HW: 8K0 907 383 E
Component: Anhaenger H09 0100
Revision: 1A001001 Serial number: 00000185497323
Coding: 0100000000000000
Shop #: WSC 00000 000 00000
VCID: 36697B1A81477436F9-8062

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389) Labels:. 8K0-959-795.clb
Part No SW: 8K0 959 795 C HW: 8K0 959 795 C
Component: TSG HR H10 0306
Revision: Serial number: 0000102198420
Coding: 010C02204000240004
Shop #: WSC 06335 000 00000
VCID: 428117CADD8FD89645-8016

No fault code found.

End-------------------------(Elapsed Time: 03:35)------------------------—


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[Tomeri]

Any ideas where to start on this drain battery issues ? BR //Tomeri


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[Smac770]

You have a LIN bus failure for the LIN bus that connects the voltage regulator, battery monitor, and energy management control module. So before supposing a parasitic drain (and I already discussed how one normally starts with that, testing the fuses after the car sleeps to see what's still pulling power), you need to fix that. A broken charging system management system is not going to help your cause.

Is the plug plugged into the alternator, and the plug on the battery negative plugged in? If you unplug both and measure resistance from the pin 1 violet/blue to pin 1 violet/blue, what do you get? The connection at the J533 is pin 2 on the 20-pin plug. So you'd ideally get a low resistance measurement between any of the three pins, as it's a bus wire with all three connected to it.

[Tomeri]

Test on the lin bus going on seems to be fine with 0 ohm. And voltage in sleep mode with the trunk open and lights off 12,2volt.


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[Tomeri]

IMG_2907.jpg


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[Tomeri]

IMG_2905.jpg


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[Tomeri]

IMG_2904.jpg


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[Tomeri]

The car system voltage is 14volt . Im having alot of charging problems over the years with 4 pcs of new car batteries within 5 years and alot of problems with programing new BEM codes into the cars computer. In vcds it says the memory is full could it be a softwere problem ?. And the old alternator cable is still not connected to the alternator only to the starter. Please se pictures at the beginning of the topic.


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[Tomeri]

IMG_2909.jpg
It says redir fails when testning hvac?


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[Tomeri]

IMG_2908.jpg


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[Tomeri]

Anouther thing is the memory in can gateway j533. How could i check that and could i clear that memory if it is full?.


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[Smac770]

You already posted a full scan showing you have errors from the CAN Gateway. "check DTC memory" = "see if you have codes". And the CAN Gateway has codes, it says it cannot manage the alternator or battery voltage because the LIN bus that connects them is failed. That's the only thing you need to be working on in regards to the charging system on that vehicle right now. As long as the J533 cannot interact with the VR or the J367, you will have charging system problems.

I wouldn't take "0Ω" as a good reading, unless maybe it's rounding down. I'd expect something more like 1Ω or 2Ω. But something is clearly wrong with the LIN bus line. You need to figure out what. The wire from all three devices is going to be spliced together. You need to test all three pins against each other and figure out who isn't talking to who.

J533 pin 3 > T17e pin 15 side a
J367 pin 1 > T17e pin 15 side b
VR pin 1 > T17r pin 11 > T17e pin 15 side b

So things seem to come together at plug T17e, which is the red 17-pin plug at the base of the driver's side a-pillar, the big connector station with multiple 17-pins and some fuses.
T17r is the white 17-pin in the ECM box. This is where the wire from the VR plug passes into the ECM box and then the T17r plug, where the other half connects to the interior harness that carries on to the T17e plug.

That all said, the timestamp on those DTCs are months ago, with only a fault frequency of 1. Clear all DTCs and see if they come back. That VCDS version is old, too.


I already mentioned what needs to be done on the battery drain issue. You have to isolate where the current is flowing when the car should otherwise be sleeping. The quickest route to that, assuming the issue is downstream from a fuse, is to measure the voltage drop across all the fuses and see which converts to a high current flow. youtu.be/lRcj1fQcWwU


redir fail is just a VCDS label file issue. B8.5 A4 had this forever until they finally fixed it. Notice how all the other modules have a .clb label file. All you can do here is log your scan to the ross-tech support and see if they fix the missing or mismatched file.

[Tomeri]

Okey will do that tests. Thank you for your time. I’ll put the results here


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[Tomeri]

IMG_3009.jpg

Yesterday, my car almost stalled (stopped )when I was going to work. And the volts stepped from 13v to 14v as it should. Before this happened it has been 14v constant in 6 mounth from when I start the car until I turn it off. so the battery management system is working right now. But I will measure voltage in sleeping mode with a clamp meter with DC current measurement. It is easy to lock the doors and look through the windows at the clamp meter in the trunk Whats going on. It should be interesting how much current that will drain the car battery in sleeping mode.


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[Tomeri]

I did some more Vcds tests before I bought a Clamp DC meter. I need help/input to evaluating all Vcds data.

19 can gateway 007 test have an error code 59. I dont know what that means ?.

Battery sensor comunication status group 006 = BDM 0. Shouldnt that be BDM 1?.

61 battery regulator = no response from controller?.

So something isnt right i belive. Any ideas on this?.


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[Tomeri]

IMG_3141.jpg

IMG_3153.jpg


IMG_3153.jpg
IMG_3144.jpg


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[Tomeri]

IMG_3167.jpg


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[Smac770]

Why are you trying to access 61? There's no such thing on a B8. Stick to the control modules under Installed and Installed 2, ie the ones the CAN Gateway says actually exist on your vehicle.

I have no idea what measuring block 007 for the J533 is reporting. My error code is 221. I have no reason to presume it's related to measuring block 006. Measuring block 006 is Generator 1 and BDM 1 for me. Do you have values in measuring blocks 014 and 018? Does 015 report any faults? Note, 014 and 015 are about the generator, so the values are not meaningful unless the engine is running.

I don't know of any resources for interpreting the error codes in measuring block 007.

[Tomeri]

In 018 there is no data at all. It's strange because it should be an error code at least ?.


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[Tomeri]

IMG_3148.jpg
IMG_3148.jpg


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[Tomeri]

IMG_3180.jpg


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[Tomeri]

There is data on group 014 but no data on 015 not even error code ?. It should be ?.


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[Smac770]

Yeah, it should say Not OK (engine off) or OK (engine on). You seem to have values in 014; voltage always has something but that you have the field signal and field current and response time, the communication seems to be there.

But like 015, your 018 is empty. I notice in both cases, they are the third group. Is the situation the same if you put 015 and 018 in the first group? The values for 006 were with it also in the third group.

That VCDS version is old. Bring it up to date?

[Tomeri]

IMG_3193.jpg
IMG_3196.jpg


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[Tomeri]

IMG_3194.jpg


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[Tomeri]

There is a fault in J367 today (Battery sensor) Maybe thats why there are no data in 014 015 018 ? What Do you think ?.


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