Audio Distortion - One or More Speakers. Pontiac G6 2006

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2006 🢒 G6 🢒 Accessories 🢒 Entertainment 🢒 Audio Distortion - One or More Speakers

Schematic Reference: Radio/Audio System Schematics .

Diagnostic System Check - Entertainment System

Always perform the Vehicle Diagnostic System Check before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle .

Speaker(s) - Reduced Volume/Audio Distortion

Important: The following information lists the most probable cause of the concern to the least probable cause. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with replacement. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

With RPO UW4 and UZ6

•	Speaker output circuit high resistance or shorted to ground--Test the speaker output circuits for high resistance or short to ground. Refer to Circuit Testing and Wiring Repairs .

•	Defective speaker--Replace the appropriate speaker. Refer to Radio Front Side Door Lower Speaker Replacement , Front Upper Speaker Replacement , or Radio Rear Speaker Replacement .

Important: The following procedure assumes all speakers are operative for all modes of operation except digital radio.

With RPO U2K

•	Audio common circuit open--Test the audio common circuit for an open. Refer to Circuit Testing and Wiring Repairs .

•	Speaker output circuit high resistance or shorted to ground--Test the speaker output circuits for high resistance or short to ground. Refer to Circuit Testing and Wiring Repairs .

•	No audio output from the digital radio receiver--Replace the digital radio receiver. Refer to Digital Radio Receiver Replacement and Digital Radio Receiver Setup .

•	No digital radio audio output from the radio--Replace the radio. Refer to Radio Replacement .

In the Monsoon radio system (U85) the front door tweeters and rear midrange speakers are coupled together inside the amplifier on the same bridge. Similarly, the front door lower speakers and the rear subwoofers are coupled together within the amplifier. Therefore it is possible to have a concern with one of the channels, wires, or speakers that affect the operation of one or all of the channels that use the same bridge. For example, a concern that causes distortion in a dominate midrange speaker may be caused by a problem with the coupled speaker on that circuit.

With RPO U85

•	Speaker output circuit high resistance or shorted to ground--Test the speaker output circuits for high resistance or short to ground. Refer to Circuit Testing and Wiring Repairs .

•	Defective speaker--Replace the appropriate speaker. Refer to Radio Front Side Door Lower Speaker Replacement , Front Upper Speaker Replacement , or Radio Rear Speaker Replacement .