Several combinations of radio receivers are offered. The audio system uses an ignition switched source of battery current so that the system will only operate when the ignition switch is in the RUN or ACCESSORY positions.
An optional navigation radio (REC) is available on this vehicle. With this system, the operator has the option of choosing a street address, point of interest, trip itinerary and other features outlined in the operator's manual.
The audio system includes the following components
- Amplifier (if equipped)
- Antenna
- Antenna - satellite radio and navigation (if equipped)
- Radio noise suppression components
- Radio receiver
- Satellite receiver module (if equipped)
- Speakers
Certain functions and features of the audio system rely upon resources shared with other electronic modules in the vehicle over the Cabin Compartment Node (CCN) bus network. The data bus network allows the sharing of sensor information. For diagnosis of these electronic modules or of the data bus network, the use of a scan tool and the proper Diagnostic Service information are recommended.
The audio system components are designed to provide audio entertainment and information through the reception, tuning and amplification of locally broadcast radio signals in both the Amplitude Modulating (AM) and Frequency Modulating (FM) commercial frequency ranges.
The available satellite radio system is a subscription based service. Information sent by satellite is transmitted to the roof mounted antenna, then to the satellite receiver module. The operator then has the choice of multiple music/information channels.
The available navigation radio system receives GPS signals from up to eight satellites to display the position and direction of the vehicle. Map information is supplied through a DVD-ROM. An electronic gyro-sensor and the vehicle's speed sensor enable the system to display the present vehicle position even in locations where GPS signals may be blocked, however system performance will be degraded.
When a destination is selected, the navigation system uses information from the map to quickly calculate a route. As the vehicle is driven along the chosen route, the operator is guided with pictorial displays and voice prompts. The navigation system will also reroute the user if a turn is missed. For complete operating instructions, refer to the manual included with the vehicle.
The audio system components operate on battery current received through a fuse in the Junction Block (JB) on a fused ignition switch output (RUN-ACC) circuit so that the system will only operate when the ignition switch is in the ON or ACCESSORY positions.
Any diagnosis of the Audio system should begin with the use of the scan tool. For information on the use of the scan tool, refer to the appropriate Diagnostic Service information.
For complete circuit diagrams, refer to the appropriate SYSTEM WIRING DIAGRAMS article .
| WARNING | Disable the airbag system before attempting any steering wheel, steering column, seat belt tensioner, side airbag, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then 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 take the proper precautions could result in accidental airbag deployment and possible personal injury. |
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| NO AUDIO | 1. Fuse inoperative. | 1. Check radio fuse and Ignition-Off Draw (IOD) fuse in Junction Block (JB). Replace fuses, if required. |
| 2. Radio connector damaged. | 2. Check for loose or corroded radio connector. Repair, if required. | |
| 3. Wiring damaged. | 3. Check for shorted or open wires. Repair wiring, if required. | |
| 4. Radio ground damaged. | 4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. | |
| 5. Radio inoperative. | 5. Refer to appropriate Diagnostic Service information. | |
| 6. Speakers inoperative. | 6. Replace speaker as necessary. | |
| NO SATELLITE RADIO AUDIO (PERFORM ALL DIAGNOSIS OUTDOORS) | 1. Subscription service has expired (with subscription expired, one channel is still available) | 1. Contact satellite radio provider. |
| 2. Items on roof blocking satellite antenna. | 2. Remove or reposition items to allow clear space around antenna. | |
| 3. Damaged satellite antenna cable. | 3. Replace satellite antenna cable. | |
| 4. Damaged satellite antenna. | 4. Replace satellite antenna. | |
| NO RADIO DISPLAY | 1. Fuse inoperative. | 1. Check radio fuse and Ignition-Off Draw (IOD) fuse in Junction Block (JB). Replace fuses, if required. |
| 2. Radio connector damaged. | 2. Check for loose or corroded radio connector. Repair, if required. | |
| 3. Wiring damaged. | 3. Check for battery voltage at radio connector. Repair wiring, if required. | |
| 4. Radio ground damaged. | 4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. | |
| 5. Radio inoperative. | 5. Refer to appropriate Diagnostic Service information. | |
| CLOCK WILL NOT KEEP SET TIME | 1. Fuse inoperative. | 1. Check Ignition-Off Draw (IOD) fuse in the Junction Block (JB). Replace fuse, if required. |
| 2. Radio connector damaged. | 2. Check for loose or corroded radio connector. Repair, if required. | |
| 3. Wiring damaged. | 3. Check for battery voltage at radio connector. Repair wiring, if required. | |
| 4. Radio ground damaged. | 4. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. | |
| 5. Radio inoperative. | 5. Refer to appropriate Diagnostic Service information. | |
| SOUND DISTORTION (VIBRATION FROM SPEAKER AREA, BUZZING - HUMMING) | 1. Door trim panel loose or missing fasteners. | 1. Inspect door trim panel and correct as necessary. Replace any missing fasteners. |
| 2. Water shield loose or misaligned. | 2. Inspect water shield and adjust as required. | |
| 3. Items placed in door trim panel map pockets vibrating or moving from side to side. | 3. Remove items from door trim panel. Ensure that vibration is no longer present. | |
| POOR RADIO RECEPTION | 1. Antenna damaged or inoperative. | 1. Diagnose and replace antenna if necessary. |
| 2. Radio ground damaged. | 2. Check for continuity between radio chassis and a known good ground. There should be continuity. Repair ground, if required. | |
| 3. Radio noise suppression inoperative. | 3. Repair or replace ground strap as necessary. | |
| 4. Radio inoperative. | 4. Refer to appropriate Diagnostic Service information. | |
| NO/POOR TAPE OPERATION | 1. Damaged tape. | 1. Insert known good tape and test operation. |
| 2. Foreign objects behind tape door. | 2. Remove foreign objects and test operation. | |
| 3. Dirty cassette tape head. | 3. Clean head with Mopar Cassette Head Cleaner. | |
| 4. Inoperative radio. | 4. Exchange or replace radio, if required. | |
| NO COMPACT DISC OPERATION | 1. Damaged CD. | 1. Insert known good CD and test operation. |
| 2. Foreign material on CD. | 2. Clean CD and test operation. | |
| 3. Condensation on CD or optics. | 3. Allow temperature of vehicle interior to stabilize and test operation. | |
| 4. Inoperative radio. | 4. Refer to appropriate Diagnostic Service information. |
AUDIO SYSTEM DIAGNOSIS
DESCRIPTION - Roof Mounted Antenna
The roof mounted antenna is a combination antenna that is used for the reception of Amplitude Modulation (AM) frequencies, Frequency Modulated (FM) frequencies and Satellite signals for the Digital Satellite Radio. The primary coaxial antenna cable is then routed through an entry hole in the roof panel into the interior of the vehicle. Inside the vehicle, the primary coaxial cable is connected to a secondary instrument panel antenna coaxial cable with an in-line connector that is located behind the right end of the instrument panel. The secondary coaxial cable is then routed behind the instrument panel to the back of the radio.