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Following Flat Battery : ABS, Traction Control and

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happyhooker View Drop Down
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    Posted: 18 Jul 17 at 12:40
Hi guys,

A weird one here.. not me mm but could be :-)

My T5 2007 2.5 diesel had a flat battery a few days ago, not sure how but it's been sorned for a few months and only recently back on the road no problems.   Then wwent to it a few days ago and battery nearly dead... tried to start it and it failed.

Now after charging i get the ABS and the Traction Control light come on.  I also get after half of a mile 3 beeps and the handbrake light flashes.

It drives absolutely fine, with the only visible exception is I have no speedo now and the lights on hte dash.

I have run vcds on it and it states intermittent loss of connection ABS.  I have cleared the codes and the go off but on starting immediately come back.

I have driven it for about a mile and a half and drives beautifully, anyones help would be much appreciated!

Cheers

Paul
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Post Options Post Options   Thanks (0) Thanks(0)   Quote T5 TDI Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 17 at 13:34
I'm afraid yours is a near classic description of an ABS controller failing Paul.  For some reason it often happens after a flat battery event.  It could be that it was about to go anyway and a current spike finished it off.  Dash faults often include a wildly swinging fuel gauge needle.  People mostly end up buying a complete pump (£700 ish I think) or a second hand one.  Be careful in that case it has the same fault as yours, it is not uncommon. 

There are firms who will test the controller but they come back as 'beyond repair' more often than not.  If you google 'T5 Transporter ABS pump' or similar you will get loads of hits.    


Edited by T5 TDI - 18 Jul 17 at 13:38
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Boiler mike Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 17 at 15:58
Does light come on straight away after resetting
Also did glow plug light come on
If so check crank sensor connection
Can cause all thes faults plus others like long time to start from cold
Etc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote happyhooker Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 17 at 17:23
Hi many thanks for your prompt reply much appreciated.

I am so frustrated that this has now happened and really can't believe that this has come out of the blue!
Anyway I will dig deeper and see if I can get is sorted soon.

Cheers

Paul
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Post Options Post Options   Thanks (0) Thanks(0)   Quote happyhooker Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 17 at 17:28
Hi,

The glow plug light comes on and goes off as normal / how you would expect.

If I use VCDS and clear all DTCs then on taking key out and reinserting and starting within 10 seconds the ABS and the Traction Control lights come on and then 1/2 mile down the road the flashing handbrake light comes on together with 3 short beeps.

It drives beautifully and doesnt seem to have any faults at all physically.  The DTC states for the ABS that it has sporadically lost connection to the unit. Or words to that effect..

Think it might be some black insulating tape for the dashboard :-)  (only joking)

Paul
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Post Options Post Options   Thanks (0) Thanks(0)   Quote T5 TDI Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 17 at 19:03
As you have access to VCDS grab the coding for the ABS controller now while it will still communicate.  Plus you can get the correct part number of the pump while you are there. Smile


Address 03: ABS Brakes

   Controller: 7H0 907 379 E

   Component: ASR FRONT MK25      0103

   Coding: 0007205

   Shop #: WSC 02756

No fault code found.

 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote happyhooker Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 17 at 20:26
Cheers for that will do.

I will throw what I find up here too

Paul
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Post Options Post Options   Thanks (0) Thanks(0)   Quote happyhooker Quote  Post ReplyReply Direct Link To This Post Posted: 10 Aug 17 at 13:59
I have ran VCDS on the van a few times..

Sometimes no response from the module 03 others I get similar to this attached txt log file.

Some of the data is irreverent I know like radio aerial but I left it in so ignore pls.

Cheers

Paul

Thursday,10,August,2017,13:52:02:32264
Data version: 20120401



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


Chassis Type: 7H - VW Transporter
Scan: 01 02 03 08 09 0B 0D 15 16 17 18 19 1C 22 2D 37 45 46 47 56
          57 6E 76 77 78 7D
 
VIN: WV2ZZZ7HZ7H033124   Mileage: 285100km/177152miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 070-906-016-BPC.clb
   Part No SW: 070 997 016 M    HW: 070 997 016 M
   Component: R5 2,5L EDC  000SG  1697  
   Revision: --H02---    Serial number: VWZ7Z0F4248905
   Coding: 0001072
   Shop #: WSC 00001 384 00096
   VCID: 244DF249E4C0DE9

No fault code found.
Readiness: 0 0 0 X X 

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 7H0-907-37x-ABS.clb
   Part No SW: 7H0 907 379 P    HW: 7H0 907 379 P
   Component: (M)ABS MK25E        0103  
   Revision: 00H12001    
   Coding: 0000552
   Shop #: WSC 02744 790 00000
   VCID: 428154D11E94F09

7 Faults Found:
00283 - ABS Wheel Speed Sensor; Front Left  (G47) 
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 37
                    Mileage: 285103 km
                    Time Indication: 0

             Freeze Frame:
                    Count: 1152
                    Count: 13056
                    Count: 41
                    Count: 0

00287 - ABS Wheel Speed Sensor; Rear Right (G44) 
            003 - Mechanical Failure - Intermittent
             Freeze Frame:
                    Fault Status: 00100011
                    Fault Priority: 2
                    Fault Frequency: 5
                    Reset counter: 40
                    Mileage: 285103 km
                    Time Indication: 0

             Freeze Frame:
                    Count: 192
                    Count: 13056
                    Count: 83
                    Count: 0

00290 - ABS Wheel Speed Sensor; Rear Left (G46) 
            003 - Mechanical Failure - Intermittent
             Freeze Frame:
                    Fault Status: 00100011
                    Fault Priority: 2
                    Fault Frequency: 5
                    Reset counter: 40
                    Mileage: 285103 km
                    Time Indication: 0

             Freeze Frame:
                    Count: 3968
                    Count: 13056
                    Count: 67
                    Count: 0

01317 - Control Module in Instrument Cluster (J285) 
            004 - No Signal/Communication - Intermittent
             Freeze Frame:
                    Fault Status: 00100100
                    Fault Priority: 2
                    Fault Frequency: 6
                    Reset counter: 15
                    Mileage: 285103 km
                    Time Indication: 0

             Freeze Frame:
                    Count: 128
                    Count: 12544
                    Count: 8208
                    Count: 0

00668 - Supply Voltage Terminal 30  
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 2
                    Fault Frequency: 2
                    Reset counter: 40
                    Mileage: 285103 km
                    Time Indication: 0

             Freeze Frame:
                    Count: 3968
                    Count: 8960
                    Count: 128
                    Count: 0

01314 - Engine Control Module 
            004 - No Signal/Communication - Intermittent
             Freeze Frame:
                    Fault Status: 00100100
                    Fault Priority: 2
                    Fault Frequency: 5
                    Reset counter: 15
                    Mileage: 285103 km
                    Time Indication: 0

             Freeze Frame:
                    Count: 128
                    Count: 12288
                    Count: 8194
                    Count: 0

01312 - Powertrain Data Bus 
            014 - Defective - Intermittent
             Freeze Frame:
                    Fault Status: 00101110
                    Fault Priority: 2
                    Fault Frequency: 17
                    Reset counter: 15
                    Mileage: 285103 km
                    Time Indication: 0

             Freeze Frame:
                    Count: 128
                    Count: 12544
                    Count: 161
                    Count: 0


-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: Redir Fail!
   Part No: 7H0 820 045 AH
   Component: CLIMA/AC            0303  
   Shop #: WSC 00000 000 00000
   VCID: 6BDFD975499ED11

2 Faults Found:
00668 - Supply Voltage Terminal 30  
            002 - Lower Limit Exceeded - Intermittent
01299 - Diagnostic Interface for Data Bus (J533) 
            013 - Check DTC Memory

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 7H0-937-049.lbl
   Part No: 7H0 937 049 T
   Component: BORDNETZ SGVER 1.0  2001  
   Coding: 0000100
   Shop #: WSC 02744 790 00000
   VCID: 438F51D5018EF91

1 Fault Found:
00925 - Fuse (30) for Interior Lamps (S261) 
            014 - Defective - Intermittent

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
   Part No: 1C0 909 605 A
   Component: 3C AIRBAG VW51      0009  
   Coding: 13123
   Shop #: WSC 02744  
   VCID: 2241F451AED4D09

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 7Hx-920-xxx-17.lbl
   Part No: 7H0 920 971 F
   Component: KOMBI+WEGFAHRSP VDO V02  
   Coding: 01412
   Shop #: WSC 00777  
   VCID: 31630B1DFB327B1
   WV2ZZZ7HZ7H033124     VWZ7Z0F4248905

1 Fault Found:
01316 - ABS Control Module 
            49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<->CAN    0001  
   Coding: 00006
   Shop #: WSC 02744  
   VCID: F0E54E19B0B8B29

1 Fault Found:
01316 - ABS Control Module 
            49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: 3B0-919-887.lbl
   Part No: 6Q0 919 887 
   Component: Navigation     BNO 0305  
   Coding: 00000
   Shop #: WSC 02744  
   VCID: 01039BDD0B122B1

1 Fault Found:
00862 - Antenna for GPS Navigation (R50/R52) 
            36-00 - Open Circuit

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 7H0-959-433.lbl
   Part No: 7H0 959 433 B
   Component: CX5 Komfortgerát     0004  
   Coding: 00020
   Shop #: WSC 02744  
   VCID: 32610411FE34409

1 Fault Found:
01330 - Central Control Module for Central Convenience (J393) 
            53-10 - Supply Voltage Too Low - Intermittent

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 3B0-035-186.lbl
   Part No: 1J0 035 152 G
   Component: Radio          BNO 0305  
   Coding: 00207
   Shop #: WSC 02744  
   VCID: 2241F451AED4D09

1 Fault Found:
00856 - Radio Antenna 
            36-00 - Open Circuit

-------------------------------------------------------------------------------
Address 76: Park Assist        Labels: 7H0-919-283.lbl
   Part No: 7H0 919 283 
   Component: Parkingsyst. T5 T5N 401  
   Coding: 00137
   Shop #: WSC 02744  
   VCID: EFE74D65AD86AD1

No fault code found.

End   ---------------------------------------------------------------------

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Post Options Post Options   Thanks (0) Thanks(0)   Quote T5 TDI Quote  Post ReplyReply Direct Link To This Post Posted: 12 Aug 17 at 18:59
I think the supply voltage low codes probably come from your flat battery.  The rest still look typical of the pump ECU.  Multiple ABS sensor codes like that are a common symptom as well.  

Still at least you have the coding and the correct pump number if you want to look for a second hand complete pump.  Or you could go for the new ECU part only, then you can change it without removing the pump or disconnecting pipes etc.  Expensive though!  http://www.banwy.co.uk/parts/abs-control-module-ecu.html  

I suppose if you are happy that the ABS pump ECU is the fault and it is scrap anyway, you could run 'Output Tests' on the ABS controller if you can get it communicating reliably.  It will probably refuse to do it anyway since you have fault codes stored but the instructions should be on the screen if it will play ball.  It will run the pump and tell you to press brake, release brake etc.  It makes the valves inside work to lock and unlock individual wheels.  I don't really expect this to fix it but it's at least worth a try.  Charge the battery first.    


Edited by T5 TDI - 12 Aug 17 at 20:12
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