4-Wheel drive issues

My 2015 Tacoma 4-wheel Dr issues.When I turn the switch, nothing happens, no blinking light or anything. I’ve reviewed some issues and understand the shift module has connection issues. However, I pulled the fuse(#14) to see it was good and it was good. When I reinstalled the same fuse, the thing went into 4-wheel drive no problem. After switching in and out of 4-wheel drive over the past week it works fine. Today I switched into 4-wheel drive and again nothing. I pulled the fuse and reinstalled the same fuse and it’s working again. Any suggestions??

 

I'm assuming you mean your 4wd fuse (20A)? It would seem maybe the fuse has a bad connection.

You can check everything at the 4wd ECU behind the glovebox, since you have no lights I'd start with checking Power on the Violet wire (Connector F12 Pin 5) and Ground on the White/Black wire (Connector F12 Pin 6) with a test light.

https://www.tacomaworld.com/threads/4wd-system-operation-help-thread.742420/