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21 RTL air compressor stopped working again - any ideas? Wiring diagram?

Jim81

Jim81

New member
Hey Y'all, I have a 2021 RTL, last month I had a Suspension Fault on the display. I pulled the onboard compressor and found that there was rust inside the armature housing. I cleaned this up with some emery cloth and contact cleaner; reassembled; and bench tested - works fine with 1 up or 2 up riding
This month, September, I got the same thing, Suspension fault on the display and a rough ride. So, I returned to the culprit (the air compressor) removed and disassembled it; no issue found; so I cleaned it up anyway just to be sure; bench tested it, and it works great. I reinstalled it, started the bike, waited 15 seconds, and the compressor was not working (but it works OK when connected straight to a battery!)
I swapped RELAY4 with another RELAY, and it's still not working. All the fuses are good. The 2 wires for this system, 1-black (ground) 1-Light Blue/w-black stripe or purple w/black stripe (power) - I think. (I'm color blind!)

I don't have a wiring diagram for this Spyder, if any of you do or know how I can get one, it would be a blessing. Thanks.

After reading over a lot of posts, this seems to be a known problem.
 
Has to be in gear. Then you will hear it IF the ride height is calibrated correctly in BUDS. It could also be a fuse blown, but you checked them. The compressor and something else are on same circuit, it might be the windshield up/down, or the horn, I can't remember.
 
My shop manual, The Repair and Maintenance Manual for my Spyder model and year has several pages of electrical diagrams almost in the back of the manual. Don't have any compressor diagrams, but my model does not come with a compressor, so I would not expect it to. If the compressor is OEM, then the wiring diagram might be in the back of the Shop Manual.
 
There is also a check valve between your compressors and the manifold system that you will want to clean and check it stops the air from leaking out of the bag while it's at rest and not pumping! If it leaks back, it makes the compressor work overtime and will make it burn up before it's time! I for one would love for BRP to ether make it better or make it go away! Manually filling that system, which many Spyder owners already have converted to, works just fine in my book! That check valve will get sticky after a time and you will not feel the system getting funky till you have a meltdown; not unless you have really good hearing &/or feel everything working through your butt!
 
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