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Home >> Mazda >> 2006 >> B4000 Base, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Troubleshooting (Entertainment System) >> Pinpoint Test 3: Poor Quality/No Sound From One Or More Speakers (Not All Speakers) >> Normal Operation

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 voltage, and shorts between any output circuits.