Ok, so yours is a manual.
It's very possibly the clock spring. I've replaced/repaired mine plenty of times, I've got 3 fully functional right-hand-drive spares (don't buy one off eBay that has an "L" stamped on the upper face, that's for a left hand drive car and won't cancel your indicators properly). What I do these days is just buy the ribbons and replace them, although I've got one (it's the one in my car now) that I've re-joined the ribbons together.
It's not just the rubbers but sometimes also the electrical connector and the adjustment of the switch. It's worth having a good look at them.
A multimeter will tell you if the clock spring's stuffed, but usually the cruise control goes then the horn stops working. You'll need a torx bit, a philips screwdriver (PH2) and a flat bladed screwdriver to pop the airbaig out - there's a hole in the underside of the steering wheel, you aim the screwdriver into the hole at 90 degrees to the steering column and push, the airbag pops out. Disconnect the horn wire and the airbag wire and it's away. Undo the two screws (torx) from under the shroud around the steering column then pop the shroud apart.
Undo the steering wheel nut and remove the steering wheel, taking care to disengage the electrical plugs.
Now you've exposed the clock spring. Press the clip retainers on each side of the housing to release the indicators and wiper switches - they just pop out easily. Undo the yellow and grey plugs underneath by pressing their locking tab and lifting them out - one holds the other in, I can't remember which one has to come out first. Two philips screws, press the tab in the top of the clock spring and it should come free and now you can test it (or replace it).
If you let the faulty clock spring go too long, it could trigger an airbag diagnostic light, and that could wreck the airbag diagnostic module which Nissan want $1,025 to replace (I bought one in a wreckers for $100 and thankfully it works).