Bose sub not workin

[4puresky]

So I have tried multiple options of looking into why my sub is not working. I have looked at the fuse and the amp but those are both good.

Does anyone have any suggestions as to why the sub is not working? All other speaker work and I have not played with any channels coming out of the head unit.

[Markc]

Perhaps the sub is blown/has an open voice coil. According to the wirring diagram for mine, it appears to be a powered sub, (recieves power from the battery as well as a signal from the head unit). Do you have a wirring diagram to refer to?If you know what connections to check, a digital multimeter will tell you whether or not the speaker or the signal to it is the problem.