I have found out that my passenger side sub in the back doesn't work. I checked connections and they were fine and I checked fuses under steering wheel and all okay. What else can I do to get me closer to figuring out how I can get this fixed.

 

bump

 

I dont have any experience here but you can try swapping the working speaker over and see if it works there...if it doesnt then it maybe a connection or radio problem. If it does then your speaker needs to be replaced. GL and update us with the fix