Radio/CD is on, but I no audio out put.
Had the ECM replaced, shut down driving . when the van came back I had no audio. the power is there, radio will tune to different station, and the CD will accept a disk, load, and track. NO SOUND from the speakers.
Is there an amp?
Is there a power fuse for the speakers?
Is there a connector cable that the mechanic could have snagged?