Audi A6 Allroad compressor location

[bagpipingandy]

Yes all 3 plugs need to be connected so the error light flash,

in vcds show a photo of the fault codes for module 34 - level control

also go to measuring blocks and show a photo of group 004

and we can go from there

regards

andy

[chrisax]

Hi Andy,

module 34.jpg

Sheenshots attached.

I reattached the compressor but I couldnt hear it running at all. It could have come on very quickly and I might have missed it but I dont think so.

Any thoughts gratefully received.

Many thanks,
Chris

[chrisax]

I dont think you could see those....

text dump as follows

Tuesday,24,March,2020,19:07:56:30678
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 19.6.2.2 (x64) HEX-V2 CB: 0.4508.4
Data version: 20200210 DS308.0
Ross-Tech: Home










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Address 34: Level Control Labels: 4F0-910-553.clb
Control Module Part Number: 4F0 910 553 A HW: 4F0 907 553 A
Component and/or Version: J197 LUFTFEDER H17 0060
Software Coding: 0000210
Work Shop Code: WSC 00557 210 58459
VCID: 221D1705B8C88C77FF1-8076
3 Faults Found:


01772 - Signal from Level Control Pressure Sensor (G291)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 3
Fault Frequency: 1
Reset counter: 117
Mileage: 291793 km
Time Indication: 0
Date: 2019.05.18
Time: 18:53:23


02645 - Valves for Level Control System
007 - Short to Ground
Freeze Frame:
Fault Status: 01100111
Fault Priority: 2
Fault Frequency: 2
Reset counter: 224
Time Indication: 0


01399 - Relay for Level-Control Compressor (J403)
011 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00101011
Fault Priority: 2
Fault Frequency: 1
Reset counter: 12
Time Indication: 0

[chrisax]

Group 004.png

[bagpipingandy]

Ok, if you clear all those codes and the 2 open or short to ground errors come back, check the 10 pin connector on the valve block, it suggests it is unplugged, go check it unplug it, clean, inspect wires in this plug for damage and corrosion then refit and test car again

these codes are stopping the system working, everything else looks ok

report back once the 10 pin plug has been checked

regards

Andy

[chrisax]

Thanks Andy, I'll try in the daylight tomorrow and let you know. Fingers crossed.....!

[chrisax]

Hi Andy,
I tried disconnecting the plug, cleaning both sides and putting it back together but no change. It was a little tired looking on some of the contacts but fairly clean and not corroded to the extent that you would think it was an issue.
Still green and orange lights flashing with no Compressor running...

[chrisax]

Andy,
Many thanks, your diagnosis was spot on!
Turns out when I had cleaned the connector I had broken the little tab so it didn't reconnect properly.
A couple of cable ties to keep the connector solidly together and the lights went out. I now have my car back!
Thank you very much indeed, you are a true gent.
Cheers,
Chris

[bagpipingandy]

No problem, fault codes led us too it ��

glad I could help

best regards

andy

[chrisax]

OK, so things werent quite as straightforward as I'd hoped !
The car did raise itself and go back to normal but then by afternoon today the rear had sagged again and the green and orange lights were flashing. MMI interface greyed-out. So I cleared the fault codes and the MMI came back, selected to lift and it worked fine. However the lights continued until it had got to the commanded height and then they went off.
However one error remained, which was:





Address 34: Level Control Labels: 4F0-910-553.clb
Control Module Part Number: 4F0 910 553 A HW: 4F0 907 553 A
Component and/or Version: J197 LUFTFEDER H17 0060
Software Coding: 0000210
Work Shop Code: WSC 00557 210 58459
VCID: 221D1705B8C88C77FF1-8076
1 Fault Found:


01772 - Signal from Level Control Pressure Sensor (G291)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 3
Fault Frequency: 1
Reset counter: 227
Mileage: 300236 km
Time Indication: 0
Date: 2020.03.28
Time: 19:45:36

I presume as it went down then I have a leak somewhere? Does this error also point to another issue?

Any help would br greatly appreciated !!!

Many thanks,Chris