Audio System

AUDIO SYSTEM
An audio system is standard factory-installed equipment on this model unless the radio delete option is specified. The audio system on the 2003 PT consists of a radio that communicates over the PCI Bus. Each radio system comes equipped with a standard premium 6 speaker system.

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 channel will also shut down until the circuit is repaired.

The radio will also set a trouble code, which the DRB III can display.

Several combinations of radio receivers are offered on this model. 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.

The audio system includes the following components:
- Antenna
- Antenna - satellite radio (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 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(R) scan tool and the proper Diagnostic Procedures manual are recommended.

The wiring information includes proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices, and grounds.

The standard 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 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.

See the owner's manual for more information on the features, use and operation of each of the available audio systems.