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I doubt its the pump, one way you can figure out if its the pump is to press the raise switch on the center console and watch the other sides to see they go up. If the other sides do, then the pump is fine. You probably have a leak in the line from the valve block assembly to the driver's front strut or the strut that you put in has a leak. I suggest checking the part you put in by taking a bottle of soapy water and spraying the top of the strut where the connection is and look for bubbles. Then spray the actual rubber part very well and look for any bubbles with a flash light. It is less common for line to leak and a lot more common for the replacement strut to leak, especially if you got the part aftermarket and not a dealership.
Please let me know what you find and if you need anything else, let me know.
Yes it could be the fuse, the fuse is located in the front pre fuse box under the passenger floor panel. It is an orange 40 amp fuse#74. Here is a picture
A simple way to check the fuse and relay is to raise the suspension level button and quickly listen outside on the driver's front wheel well area for the airmatic pump to kick on. If you hear it turn on, then you know the fuse and relay are good.
Yes, a blown fuse can cause one strut not to raise since the other struts still have air in them. It will take a while for the other struts to leak down, sometimes 1-2 months. Most likely the leaking strut you replaced caused the pump to over run and blow the fuse. Typically the airmatic pump burns up and then draws too much amperage which then causes the fuse to blown. I would check that 40 amp maxi fuse and if its blown, just go ahead and replace the pump, fuse and relay.
I think you may have to replace the pump if it doesn't run after checking/replacing the fuse. If the fuse is good and the pump is not running, then it has burned and seized. The fuse actually just pulls out of the holder, straight up. You have to release a small tab on the front and back of the fuse to allow it to slide up. The fuse looks like the one in the picture I've attached.
Here is the fuse
Here are the compressor instructions.
Its the one with the blue dot.