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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 918 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Audio Distortion - One or More Speakers >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ON the ignition, with the engine OFF and turn ON the radio. Adjust the fade and balance controls to mid range and Insert the CD from the J 39916-A  to identify the suspect speaker. See Special Tools .
  2. Test for a short to B+ or short to ground on the suspected speaker circuits between the amplifier and the suspect speaker.
    • If all circuits test normal, replace suspect speaker if distortion is found.
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