Audio Distortion - One or More Speakers

Audio Distortion - One or More Speakers

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

Reference Information
Schematic Reference

Radio/Navigation System Schematics (Radio/Navigation System Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Radio/Audio System Description and Operation (Radio/Audio System Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for Scan Tool Information
Special Tools

J 39916-A CD Diagnostic Audio Kit

Left Channel - Audio Distortion

Important: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement.


Left Front Low Level Audio Signal circuit open-Test the left front low level audio signal circuits for an open or high resistance.

Right Channel - Audio Distortion

Right Front Low Level Audio Signal circuit open-Test the right front low level audio signal circuits for an open or high resistance.

One Speaker - Audio Distortion

1. Speaker output from Amplifier open or shorted to voltage-Test the appropriate speaker output for an open or short to voltage.
2. Defective speaker-Replace the appropriate speaker. Refer to Speaker Replacement Reference (Speaker Replacement Reference).
3. Defective Amplifier-Replace the amplifier. Refer to Control Module References (Programming and Relearning) for replacement, setup or programming.

Audio Distortion from Rear Speaker During 5.1 DSS DVD Playback

Audio output from radio open-Test the appropriate output from the radio for an open. Refer to Circuit Testing (Component Tests and General Diagnostics) and Wiring Repairs (Component Tests and General Diagnostics).

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Speaker Replacement Reference (Speaker Replacement Reference)