Allroad Air Suspension Compressor strip & repair

[Al'saudi]

Heybagpipingandy can you help please?
Ive got a 2001 allroad, the suspension was leaning over (down on the o/s) and i got told that the front airbag was faulty! I replaced this and the car will not level out still. So ive had the fault codes read and only get 'Control position not learned' as a fault. I have undone the pipes from the distribution valve and inflated each corner with an airline so no issues on the air side, ive had a kit from you on ebay and the pump runs fine from a outside power source! When everything is connectedI get no power to the pump and of course no air to the airbags. Ive checked all the fuses and none blown. Do you have any idea where the pump relay is so I can test that? or is it possible that the suspension ecu has gone?
Many thanks for any help:-)

[bagpipingandy]

Heybagpipingandy can you help please?
Ive got a 2001 allroad, the suspension was leaning over (down on the o/s) and i got told that the front airbag was faulty! I replaced this and the car will not level out still. So ive had the fault codes read and only get 'Control position not learned' as a fault. I have undone the pipes from the distribution valve and inflated each corner with an airline so no issues on the air side, ive had a kit from you on ebay and the pump runs fine from a outside power source! When everything is connectedI get no power to the pump and of course no air to the airbags. Ive checked all the fuses and none blown. Do you have any idea where the pump relay is so I can test that? or is it possible that the suspension ecu has gone?
Many thanks for any help:-)

Hi, Al'saudi
Is the suspension error light on?
is there any air in any corner?

Double check the fault codes, If ONLY "01437 - control position not learned" appears try a calibration, see link; 01437 - Ross-Tech Wiki

If another fault code exists let us know what it is you need to fix all other faults before attempting the calibration.

the compressor relay is under the steering wheel in the 8 point relay carrier in where the compressor 40AMP fuse is, the compressor will not work until you clear the error light, so I don't think it will be the relay, if the only fault is control position not learned then try a calibration using VCDS.

there is also a filling procedure somewhere, if you have no air what-so-ever in the system, but its a while since I have seen it, it may be worth a try if your system is empty

regards

Andy

[Al'saudi]

Hi, Al'saudi
Is the suspension error light on?
is there any air in any corner?

Double check the fault codes, If ONLY "01437 - control position not learned" appears try a calibration, see link; 01437 - Ross-Tech Wiki

If another fault code exists let us know what it is you need to fix all other faults before attempting the calibration.

the compressor relay is under the steering wheel in the 8 point relay carrier in where the compressor 40AMP fuse is, the compressor will not work until you clear the error light, so I don't think it will be the relay, if the only fault is control position not learned then try a calibration using VCDS.

there is also a filling procedure somewhere, if you have no air what-so-ever in the system, but its a while since I have seen it, it may be worth a try if your system is empty

regards

Andy[/QUOTE]

Hi, yes the suspension light is on and the only fault is the control position not learned with no other faults.
Is it possible to recalibrate with a snap on verdict??

[bagpipingandy]

Affraid I cannot help you there, Im not sure about the snap on scanner, but I would recommend a scan 1st with VCDS too, just to make sure there are no other codes in module 34, once you have the vcds get it calibrated if only 01437 shows up with VCDS

regards

Andy

[ertatta]

Ok Andy, I did clear the code in module 55 and it doesn't seem to return so I think we are good there as I don't currently have error there.
i do keep getting the two 01400 codes returning along with 01437 in module 34 after multiple times of clearing.
i'll get back to u with a screen shot of "measuring blocks" in a couple min.

[ertatta]

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[Al'saudi]

Hi Andy, just to say yes the snap on verdict does do it and it did cure the problem many thanks for your help

[bagpipingandy]

Hi Andy, just to say yes the snap on verdict does do it and it did cure the problem many thanks for your help

Nice one !!

good job, regards

Andy

[bagpipingandy]

Ok Andy, I did clear the code in module 55 and it doesn't seem to return so I think we are good there as I don't currently have error there.
i do keep getting the two 01400 codes returning along with 01437 in module 34 after multiple times of clearing.
i'll get back to u with a screen shot of "measuring blocks" in a couple min.

Ok that's quite good but bad news is your measuring block are empty?? that's not good, in group 1, 2 & 3 (make sure you click "GO!" for each one) you should get all 4 windows in each group to show values, you are getting nothing??

Try another module say engine, and measuring block to see if you get values in the 1st 3 groups, to make sure your software and cable is working, then if still nothing in the measuring blocks of module 34 is must be either wiring or a goosed ECU, you could try the ECU on a radiator (or warm place) for the evening and try it again the next day to see if it can read the measuring blocks, this looks like the problem and maybe an ECU issue, I assume VCDS connects ok when you go to module 34?

regards

Andy

[ertatta]

Ok my friend, sorry bout taking so long to respond! U really have been G-d sent and your wisdom on these matters will always be appreciated.
I finally got around yesterday to raising the car on wood blocks at all 4 corners about 3". Low and behold after clearing codes on 34, I went to check "measuring blocks" and finally had values for the 3 groups. Then went about starting the calibration and after raising the channel value to 1, I heard the compressor kick on after 6 weeks of NO LUCK. The car leveled off at what seems to be level 2 but won't go up anymore than that. Car drove great but I still have the level error light on in the dash. So now that the car is driveable, what would the best way of getting out of this "frozen" actual level 2 state?
thanku Andy and at least I know that with your kit I can breath new life into this compressor!