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Test D: Poor Quality/Distorted Sound of No Sound From All Speakers

PINPOINT TEST D: POOR QUALITY/DISTORTED SOUND OF NO SOUND FROM ALL SPEAKERS


D1-D2:






Normal Operation
The audio unit directs the audio signals to the speakers through separate positive and negative circuits for each of the 4 audio channels: LH front, RH front, LH rear, and RH rear. The audio unit provides internal circuit protection for shorts to ground, shorts to B+ battery, or shorts between any output circuits.

Possible Causes
- audio unit