When you say the radio doesn't work at all, I assume the screen doesn't come on or there is no audio?
If this is the case, then we need to review power and grounds going to the radio. I attached the wiring diagrams below for this.
Here is a guide that will help with this testing:
https://www.2carpros.com/articles/how-to-check-wiring
Basically, if there is a power supply issue or a ground issue then even if you put an aftermarket radio in it, it will not work.
So, let's start with running through this info with the diagram and see if you have power and a good ground. If you do, then I would start looking for a replacement radio.
Let me know if you have questions on this.
Thanks
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Sunday, March 27th, 2022 AT 6:43 PM