hello i have a 2003 350z touring model and i have this problem where my driver side speakers front and rear work, but my passenger speakers are problematic. my front passenger side speaker completely makes no sound and my rear speaker plays very lowly at max volume with slight static. (im assuming its blown but im uncertain).

my car does have coils with edfc and im just curious if its a grounding wire problem or completely just wiring is jacked???

im going to be working on this tomorrow so any input would be cool thanks in advanced