Some suspension fault codes this morning

mpinco said:

Those connectors are suppose to have a positive snap-lock so I wonder how it unplugged itself. You mentioned that the pump was either replaced or something was done under CPO. Did it just take this long for the poorly seated plug to work its way loose or do you have a connector issue?

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this is a good point. I might ask the service manager for your diagnostic fee back...seeing as though they were the last to touch the thing and it wasn’t seated properly. Never hurts to ask...

It does have a positive snap lock. My guess is it was never fully locked in and took 15 months to work itself loose. Given its location, I don't see how it could ever "unclick" itself.

So I got the C1A36-01 Exhaust valve - General failure information - general electric failure Code this weekend when I was out of town at the ski resort. I tried to reset it a few times but had no luck, Car was still driveable just no suspension control or terrain response. Got home last night and pulled the compressor cover off to find that there were two wires worn through that appear to go to the exhaust valve and it also looks like the whole compressor got hit at some point. The bracket it sits on is a little bent.

According to my service history this is the original hitachi compressor on my 2011 and it has 116k miles on it so I went ahead and ordered another one from AB and this hose kit: https://www.roverparts.com/Parts/DA3964 because I had to cut one of the two hoses at the back that wouldn't come out. I should be able to replace that one with these from the kit correct?

DirtyHal said:

So I got the C1A36-01 Exhaust valve - General failure information - general electric failure Code this weekend when I was out of town at the ski resort. I tried to reset it a few times but had no luck, Car was still driveable just no suspension control or terrain response. Got home last night and pulled the compressor cover off to find that there were two wires worn through that appear to go to the exhaust valve and it also looks like the whole compressor got hit at some point. The bracket it sits on is a little bent.

According to my service history this is the original hitachi compressor on my 2011 and it has 116k miles on it so I went ahead and ordered another one from AB and this hose kit: https://www.roverparts.com/Parts/DA3964 because I had to cut one of the two hoses at the back that wouldn't come out. I should be able to replace that one with these from the kit correct?

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I’m not sure on the hose you cut...might not be so simple but hope it is.

The upper of the two is the one I cut.

DirtyHal said:

The upper of the two is the one I cut.

View attachment 10527

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do you have the other end of it? I’d hang onto it in case you need to repair it. I’m not sure where that one terminates, but I would certainly avoid making any more cuts if you can avoid it. Did you try to trace the other end? You’ll need to replace the line I think.

Edit: looks like exhaust from air supply

Just talked to AB on the phone, this kit is designed for exactly what I did. It comes with two new quick connect fittings for patching the lines into the compressor that people are cutting. I had watched the guys at powerfuluk cut the line in their youtube video on the compressor removal and from what I understand these fittings are notorious for not coming undone after being in that environment for so long.

I will update this post once I get the kit and my new compressor and let you know if it turns out that way.

DirtyHal said:

Just talked to AB on the phone, this kit is designed for exactly what I did. It comes with two new quick connect fittings for patching the lines into the compressor that people are cutting. I had watched the guys at powerfuluk cut the line in their youtube video on the compressor removal and from what I understand these fittings are notorious for not coming undone after being in that environment for so long.

I will update this post once I get the kit and my new compressor and let you know if it turns out that way.

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good deal. Mine came off with no problem so didn’t have to mess with it. Glad you got confirmation!

When I took my compressor off, I wound up just unscrewing that entire fitting from the compressor housing.

Ok, just to recap and provide some closure for future people who are going to google the C1A36-01 Exhaust valve - General failure information - general electric failure Code.

• If you get this code BY ITSELF WITH NO OTHER CODES I think it is likely that either the valve on your compressor has failed or the there is an issue with the wiring whether it be damaged like mine or disconnected like @ryanjl . This seems to be true regardless of compressor design, Hitachi or AMK. After installing the new compressor the code went away, be aware that the compressor may run for awhile after startup to fill the air tank back up. It kind of freaked me out at first but once the system was full it has been operating normally.

• If you decide to replace the compressor like I did the DA 3964 Hose kit for Hitachi Compressors from Atlantic British is helpful to have on hand especially if you cut one of the hoses. When using this kit there are no instructions but know that you will most likely have to trim the air lines at the back of the compressor further to make room for the new quick connect fitting and short hose length. It is kind of a pain but just trim the hose slightly each time until you can make it work. I ended up trimming from both the existing line and the new line. The brass fittings that are provided need to be inserted with the end with the shoulder going into the tubing first. This took a bit of wiggling to get started but once it was going I just pushed down against my workbench until it was flush. A proper hosecutter would also be useful for trimming, I used some tin shears but that is not recommended because it can oval out out the hoses. Attached is a picture of my installed compressor and the hose I spliced the new section onto.