Diagnosis And Testing - Audio

Any diagnosis of the Audio system should begin with duplicating the customer concern (verify the problem), include checking for applicable Technical Service Bulletins (TSB), Star Online Publications, software updates and the use of a diagnostic scan tool. Check for any Diagnostic Trouble Code (DTC) data. If a DTC is found, refer to - Radio and perform the appropriate diagnostic procedure before proceeding in this information. Refer to the appropriate wiring information.

For a complete AUDIO SYSTEM BASE/PREMIUM wiring diagram, refer to the appropriate wiring information .

WARNING:

To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbags, airbag curtains, knee blocker, seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect the Intelligent Battery Sensor (IBS)/negative battery cable assembly from the negative battery post, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.

AUDIO SYSTEM DIAGNOSTIC TABLE
CONDITION	POSSIBLE CAUSES	CORRECTION
RADIO INOPERATIVE	1. Fuse inoperative.	Check radio fuse.
	2. Open wiring.	Check "No Response from ECU". Refer to NO RESPONSE FROM ECU .
	3. Security Gateway Module (SGW) inoperative.	Check "Scan Tool Will Not Communicate With Vehicle". Refer to SCAN TOOL WILL NOT COMMUNICATE WITH VEHICLE .
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 AMPLIFIER (AMP) - DIAGNOSTIC CODE INDEX .
	6. Speakers inoperative.	Refer to AUDIO (RADIO) - DIAGNOSTIC CODE INDEX .
NO RADIO DISPLAY	1. Fuse inoperative.	Check radio fuse. 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 the appropriate information.
	6. Center stack screen	Refer to the appropriate information.
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 AUDIO (RADIO) - DIAGNOSTIC CODE INDEX or. Refer to DIAGNOSIS AND TESTING .
POOR SATELLITE DIGITAL AUDIO RADIO SERVICE (SDARS) AUDIO RECEPTION	1. SDARS antenna Inoperative.	Perform the "Poor or No Satellite Audio Reception" test. Refer to POOR OR NO AM/FM 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. Make sure that the vibration is no longer present.