Circuit/System Description
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
The video entertainment system in this vehicle transmits the DVD audio signal playback to the vehicle via an FM modulation process. The DVD audio signals are routed through the a/v box, through the audio filter and on to the FM modulator. The tuner on the radio is then tuned to one of the selectable frequencies on the FM frequency selector switch inside the console. The DVD audio portion can now be heard through the vehicle audio system. For the clearest sound reproduction from the DVD Audio, Tune the radio to each one of the frequencies shown on the FM frequency selector switch and stop on the frequency that has the least amount of radio signal or noise. Now set the FM frequency selector switch to the same frequency as the radio.