Radio, Stereo, and Compact Disc: Description and Operation
AUDIOAn audio system is available factory-installed equipment on this model. Several combinations of radio receivers and speaker systems are offered.
The audio system includes the following components:
- Antenna
- Compact disc changer (if equipped)
- Radio noise suppression components
- Radio receiver
- Speakers
Certain functions and features of the audio system rely upon resources shared with other electronic modules in the vehicle over the Programmable Communication Interface (PCI) 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 DRB III� scan tool and the proper Diagnostic Procedures manual 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 audio system components operate on battery current received through a fuse in the Power Distribution Center (PDC) on a fused ignition switch output (RUN/ACC) circuit so that the system will only operate when the ignition switch is in the Run or Accessory positions.
Refer to the owner's manual for more information on the features, use and operation of each of the available audio systems.
AUDIO SYSTEM
The audio system on the 2003 PL consists of a radio that communicates over the PCI bus. The speakers are located in the instrument panel, the front doors and the rear "D" pillars. The instrument panel speakers are a tweeter type speaker for high frequency. The front door speakers are a woofer/midrange type speaker. The rear "D" pillar speakers are a full range type speaker. If one of the speaker circuits experiences a short, the other speakers on that output channel will also shut down until the circuit is repaired. The radio will also set a trouble code, which the DRB III can display.
The in-dash CD-changer is designed to fit into the existing cubby bin in the center stack. This new cartridge-less CD-changer is controlled by your radio, and allows you to individually load up to four discs at one time. However, due to its compact design, the CD-changer can only carry out one operation at a time. For example you can not load a new disc while playing another at the same time. Each operation happens sequentially.
The radio unit installed with your system provides control over all features of the CD-changer with the exception of the CD load and eject functions, which are controlled by buttons located on the front of the CD-changer. The radio also supplies the power, ground, PCI Bus, left and right speaker output through a single DIN cable. All features you would expect , such as Disc Up/Down, Track Up/Down, Random and Scan are controlled by the radio, which also displays all relevant CD-changer information on the radio display.
The CD-changer contains a Load/Eject button and an indicator light for each of the four disc positions. The individual light indicates whether a CD is currently loaded in that particular chamber of the CD-changer. Pressing the individual Load/Eject button for a particular chamber will eject a disc currently present in the chamber. If the chamber is currently empty, actuating the Load/Eject button will position that chamber to receive and load a new disc in that chamber.