Muting Signal Logic

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

The audio muting logic is orchestrated by the audio-navigation unit. The audio-navigation unit determines what audio source has priority to use the speakers.

The priority of the audio sources is as follows:

HandsFreeLink has the highest priority, followed by, AcuraLink, navigation, and finally the audio system (radio/CD-DVD/USB/AUX inputs). The priority is passed by HandsFreeLink and AcuraLink to the audio-navigation unit by B-CAN. The navigation mute signal is passed to the stereo amplifier.

The audio-navigation unit temporarily disables the voice control buttons, but allows guidance to be heard. In addition, the audio-navigation unit suppresses the output from the audio system, XM receiver, the disc player, or other audio accessories.

When the navigation system sends out a voice route guidance command, the door speaker sound output is reduced, and the navigation voice is heard in the center speaker.

When the navigation voice control system is in use, all of the speakers are muted, and the navigation voice prompts are heard from the center speaker.