For 1990-2009 cars

Important: Review the system operation in order to familiarize yourself with the system functions.

Refer to Radio/Audio System Description and Operation .

### Visual/Physical Inspection

• | Inspect for aftermarket devices which could affect the operation of the Radio/Audio System. Refer to Checking Aftermarket Accessories .

• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

### Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

### Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

• | Audio Distortion - One or More Speakers

• | Compact Disc Inoperative

• | Radio Display Inoperative, No Sound from Speakers

• | Tape Player Inoperative

• | Radio Replacement