N

Newinnwoodman

Active Member
Hi

I’m new here. I’ve been lurking in the shadows for a good few years but I thought the time has come to join.

The deciding factor was an eas problem I have on my 2002 L322. I recently purchased it, sat at normal height, no lights on the eas panel. Air suspension inactive on dash.

I’ve tried to connect with all comms and lynx but it’s stating can error.

I have power to the ecu and that’s it!

Any ideas please?

A short time later…


Eureka!!! I’ve had a breakthrough in canbus communication. The headlamp ecu was clogging the databus and the pins were green too!

Faults read and cleared down and now seems to be pump exhaust valve. Is it a whip it out and wipe it or replacement?

Cheers guys

NIWM
 
I’ll look forward to their help on the next problem.
I did some work on bus comms when introducing it into the Hawk aircraft. Because it was a test aircraft the whole thing was instrumented. Could do with that on the RR lol.
 
Shame your'e not closer - I have a complete unit sitting in my shed gathering dust, was taking ages to pump the suspension so I fitted new rings but, in the meantime, I bought a new one - now this one is just taking up space.
 
Thanks Bruno22 That’s mighty kind of you to consider that. If you would like to part with it I’d be happy to cross your palm with the correct number of sheckles plus postage.
If you would like to let it go we can make arrangements by the private message facility on here.

Has anyone had any experience of eas exhaust valve failure pls? Which actual valve is it?

As soon as I clear the fault the compressor runs for maybe 5 seconds and then stops and the fault returns.

I have two solenoids in the Wabco unit.
One is exhaust pilot the other is hp exhaust.
One has resistance of 5.5 ohms the other about 29.
When I apply 12v to the 5.5 ohm init it gives a healthy click.
The other only a tiny movement.
Tried measuring the voltage at their respective connection by back probing but can’t find any power there but that does not necessarily mean it’s a fault. Next to find the plug diagram for the ecu and see if it’s putting out 12v.
All inputs welcome , especially 12v ones :)
 
Last edited:
Newinnwoodman said:
Thanks Bruno22 That’s mighty kind of you to consider that. If you would like to part with it I’d be happy to cross your palm with the correct number of sheckles plus postage.
If you would like to let it go we can make arrangements by text. I’m on /*snip*/.

Has anyone had any experience of eas exhaust valve failure pls? Which actual valve is it?

As soon as I clear the fault the compressor runs for maybe 5 seconds and then stops and the fault returns.

I have two solenoids in the Wabco unit.
One is exhaust pilot the other is hp exhaust.
One has resistance of 5.5 ohms the other about 29.
When I apply 12v to the 5.5 ohm init it gives a healthy click.
The other only a tiny movement.
Tried measuring the voltage at their respective connection by back probing but can’t find any power there but that does not necessarily mean it’s a fault. Next to find the plug diagram for the ecu and see if it’s putting out 12v.
All inputs welcome , especially 12v ones :)
Click to expand...

I'd edit out your phone number and use the "Conversation" feature to send a personal message. Just in case the spammers and scammers are trawling pages.
 
Last edited:
Phone number edited- Merci.

An update: I con checked from the solenoid that seemed to be causing the fault back to the ecu. Result open circuit!
The wiring was extended in order to mount the compressor adjacent to the rear nearside wheel when the Lpg tank took the space of the spare wheel. One end of the transplant was done well with solder and heatshrink and the other end by a wild man or someone with a split personality who liked crimping badly. When I untaped the bundle a wire was already out and the remainder pulled out with a really gentle pull. So, That’s one problem solved. Now onto the next . Can I find the faults quicker than the RR is trying to destroy itself?
 
Well my eas quest continues. Thanks for the help so far proving two heads are better than one half.
Two more faults found. Cracked bracket securing end of height sensor to rear wishbone if they are still called that.
When checking the reservoir solenoid under the car I suddenly became aware I was not alone!!. It seems a snake had wrapped itself around the rear axle and there it was hissing away. Doh this medication is too strong. Couldnt find the hole so out with the garden sprayer. Sprayed everywhere with Roundup, got soaked and then in one place found a slight change of note to the snakes noise. There it was , a few inches after coming through from the boot.
Repair stuff ordered!

So in summary so far,
Can error caused by headlight ecu
Exhaust solenoid feed failed- poor soldering by Lpg installation engineer
Hole in main reservoir feed- ?? Aliens??

It’s sunny and life goes on…
 
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