Unit Check (Quick Check): HFL
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.
This checks the 4 wire communication bus between the HandsFreeLink control unit and the audio-navigation unit.
When connection is shown with NG, check the HFL function and go to appropriate troubleshooting in HandsFreeLink System.
Courtesy of AMERICAN HONDA MOTOR CO., INC.