Navigation cannot control audio/disc/rear entertainment

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.

Diagnostic Test: System Links

NOTE:

Check the vehicle battery condition first (see BATTERY TEST ).
Check for and resolve all CAN DTCs before troubleshooting the navigation system.
Verify that the correct audio-navigation unit is installed for this model. Go into the Diagnostic mode, and use Version (see VERSION ).
Check the connectors for poor connections or loose terminals.
Before troubleshooting, make sure you have the anti-theft codes for the audio-navigation unit.
After troubleshooting, enter the anti-theft codes for the audio-navigation unit.
Check any official Honda service website for more service information about the navigation system.

Turn the ignition switch to ON (II).
Make sure the anti-theft code for the navigation system is entered.
Go into the Diagnostic mode, and use the System Links diagnostic (see SYSTEM LINKS ).
Is the Radio icon red?

YES -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).

NO -Go to step 4.
Substitute a known-good audio-navigation unit (including HDD) (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck.
Can the navigation system control audio/disc functions?

YES -Replace the original audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).

NO -Do the audio system troubleshooting.