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DISCO3.CO.UK > Maintenance & Mods (D3)

Suspension half working
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fusion158
 


Member Since: 08 Apr 2014
Location: California
Posts: 61

United States 2005 LR3 4.4 V8 SE Auto Bonatti GreyLR3
Suspension half working

I just finished replacing my Hitachi compresspor with an AMK unit. After some minor hiccups I got the compressor running. I am not having an issue with the suspension going up. At first it wasn't raising but I after playing around with the GAP tool I was able to get the front raised, honestly not sure how I did it. At the end of testing I started getting error code C1A00-54 System programming failure - missing calibration so at that point I left it for the day.

This evening I started again looking at it and decided to do a calibration. I started the calibrationn and I was able to adjust the height of the front up and down with no problem. When it came to the rear then I ran into issues. As I pressed the arrows to adjust the height of the susupension up I could hear the rear valve block clicking but there was no sound of air flowing into the bag like on the front of the suspension. I tried both the left and right rear corners and it was the same. It almost sounds like there is no air flowing to the block or something.

Has anyone ever encountered something like this?  
Post #227402221st Jan 2022 5:54 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10608

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Beware the ecu needs reprogramming when fitting an AMK

Maybe you need to disconnect the pipe to the rear block, near the compressor and prove its not blocked.  
Post #227402321st Jan 2022 6:04 am
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fusion158
 


Member Since: 08 Apr 2014
Location: California
Posts: 61

United States 2005 LR3 4.4 V8 SE Auto Bonatti GreyLR3

ECU has been reprogrammed for the compressor and was successful thankfully.

I'll check the pipes after I get home from work.[/quote]  
Post #227403721st Jan 2022 8:08 am
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Globetrotter448
 


Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1807

Australia 2007 Discovery 3 4.0 V6 Petrol SE Auto Java BlackDiscovery 3

Could be the reservoir valve needs a clean and refurbish. Kits are available on ebay. The kit usually includes both front and rear valve blocks as well.  
Post #227440022nd Jan 2022 11:23 pm
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6297

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

The suspension should still work even if you have not the correct software loaded for Hitachi/AMK it was only a pressure setting that changed.

Just disconnect the feed to the front air valve and check that there is air being delivered, if not you need to look at the distribution valve in the centre of the car in front of the pump.
Are you sure you have the pipes connected correctly, or have you messed around with any height sensors?.


Flack Thumbs Up  
Post #227445723rd Jan 2022 10:47 am
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