There is a speaker relay that also might be out, here is a diagram for you. To check the fuse it's under the hood, inside integrated power module (left front of engine compartment), check fuses #5, #20 and #14.
This guide will help as well and there is fuse panel and radio wiring diagrams to help see how the system works BELOW.
Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
Images (Click to enlarge)
Thursday, April 4th, 2019 AT 12:14 PM