Right front speakers not working

Hey guys. Just wanted to get everyone’s opinion. My right front speaker will not work. My drivers side speaker works perfectly. I’ve already replaced the passengers side speaker and checked all connections and looked at the “radio” fuses and can’t figure out why in the world it won’t work. The truck has already been in the shop for two days and they can’t figure out what’s wrong either. What do y’all think is wrong? I have the JBL sound system

 

Did you replace/check the tweeter also? Not sure how the JBL system is wired, but I know my non-JBL tweeter and 6x9 are wired in series.

 

Yes! Wondering if something is wrong with my stock amp behind the rear seat

 

I believe the amp has fuses that you can check also, but since the driver's side is working I don't think that would be the issue. Worth checking on though.

 

This might help with the troubleshooting.
http://www.customtacos.com/tech.old...06toyrm/06toypdf/06rmsrc/rm2006ta/0550011.pdf

 

Thank you! I might just end up wiring the speakers into an aftermarket head unit if the amp has a couple bad channels

 

I am currently having the same issue. my front diver door will not get sound. I have new speakers from Crutchfield I am installing. I wired in the speakers to the door and get a buzzing through the speakers but no audio. I have checked the wiring harnesses with a multimeter, it seems like the wires are not completing the circuit all the way to the head unit. I do not have a JBL system. I am wondering if I need a head unit. Does anyone have any advice?