4 wheel drive light does not come on! on 2002 Suzuki XL-7

When the 4 wheel drive is engaged the light will not come up on the dash. So i put it on a hoist and put it in 4 wheel drive and notice that it engages and the drive shaft will spin but the tires wont. I was thinking it might be the actuator but I am still not sure. Any ideas?

Asked by for the 2002 Suzuki XL-7
you are on the right track. you need a shop to confirm this and give you a bid.