Diagnostic Overview - Audio System

Many conditions that affect radio operation may be corrected without removing the set from the car. Verify the condition and follow the diagnostic procedure outlined in this section to isolate and correct the condition. Before attempting to diagnose any audio system problems be sure battery is fully charged. If voltage is below 9 volts, erroneous diagnosis may result.
1. Verify customer complaint.
2. Follow radio service procedures.
3. If technical assistance is required, have all the pertinent information available before placing the call.
4. For a more complete diagnostic overview, consult the DE SSG.