Diagnosis And Testing - Audio
Any diagnosis of the Audio system should begin with the use of a scan tool. Check for any Diagnostic Trouble Codes (DTCs). If there are any DTCs, refer to the appropriate Electrical Diagnostic article before proceeding.
Refer to the appropriate wiring information.
Disable the airbag system before attempting any steering wheel, steering column, seat belt tensioner, side airbag or instrument panel component diagnosis or service. Refer to WARNING . Disconnect and isolate the negative battery (ground) cable. Wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| RADIO INOPERATIVE | 1. Fuse inoperative. | Check radio fuse and Ignition-Off Draw (IOD) fuse in the Totally Integrated Power Module (TIPM). Replace fuses, if required. |
| 2. Open wiring. | Check "No Response from Radio". Refer to NO RESPONSE FROM RADIO . | |
| NO AUDIO - BUT RADIO LIGHTS UP | 1. Antenna problem. | Perform the "Poor or No AM/FM Audio Reception" test. Refer to POOR OR NO AM/FM AUDIO RECEPTION . |
| 2. Radio or Amplifier (if equipped) connector damaged. | Check for loose or corroded radio/amplifier connector. Repair, as required. | |
| 3. Wiring damaged. | Check for shorted or open wires. Repair wiring as required. | |
| 4. Radio or Amplifier (if equipped) ground damaged. | Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground as required. | |
| 5. Amplifier (if equipped) inoperative. | Refer to DIAGNOSIS AND TESTING . | |
| 6. Speakers inoperative. | or if equipped. Refer to DIAGNOSIS AND TESTING and DIAGNOSIS AND TESTING . | |
| NO RADIO DISPLAY | 1. Fuse inoperative. | Check radio fuse and Ignition-Off Draw (IOD) fuse in Totally Integrated Power Module (TIPM). Replace fuses as required. |
| 2. Radio connector damaged. | Check for loose or corroded radio connector. Repair as required. | |
| 3. Wiring damaged. | Check for battery voltage at radio connector. Repair wiring as required. | |
| 4. Radio ground circuit damaged. | Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground as required. | |
| 5. Radio inoperative. | Check "No Response from Radio". Refer to NO RESPONSE FROM RADIO . | |
| POOR AM/FM RADIO RECEPTION | 1. Antenna inoperative. | Perform the "Poor or No AM/FM Audio Reception" test. Refer to POOR OR NO AM/FM AUDIO RECEPTION . |
| 2. Radio ground damaged. | Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground as required. | |
| 3. Radio inoperative. | Refer to DIAGNOSIS AND TESTING or DIAGNOSIS AND TESTING . | |
| POOR SDAR AUDIO RECEPTION | 1. SDAR Antenna Inoperative. | Perform the "Poor or No Satellite Audio Reception" test. Refer to POOR OR NO SATELLITE AUDIO RECEPTION . |
| SOUND DISTORTION (VIBRATION FROM SPEAKER AREA, BUZZING - HUMMING) | 1. Door trim panel loose or missing fasteners. | Inspect door trim panel and correct as necessary. Replace any missing fasteners. |
| 2. Water shield loose or misaligned. | Inspect water shield and adjust as required. | |
| 3. Items placed in door trim panel map pockets vibrating or moving from side to side. | Remove items from door trim panel. Ensure that vibration is no longer present. | |
| NO COMPACT DISC OPERATION | 1. CD damaged. | Insert known good CD and test operation. |
| 2. Foreign material on CD. | Clean CD and test operation. | |
| 3. Condensation on CD or optics. | Allow temperature of vehicle interior to stabilize and test operation. | |
| 4. Radio inoperative. | Refer to DIAGNOSIS AND TESTING or DIAGNOSIS AND TESTING . |