No power to the other 3 wires

 

Start engine, put trans in neutral, try and shift t-case to 4-lo. (not moving) give it a couple minutes, when (if....) the light goes solid, shift to 4 hi. Give it a few minutes, when (if....) the light goes solid, shift to 2 hi. Should start working properly afterwards.

If it doesn't, and never shifts to any other range, may be time to visit the dealer.....

 

Did you ever get this resolved? I have the same problem, it happened a year ago, finally got around to replacing the front actuator but it didn't fix the problem. I traced all the wires and they look good, all the fuses are good. I'm thinking the TIPM will need reflashed because of a software update. If I could go to a manual transfer case and manual locking hubs I would!