Navigation cannot control audio/CD/rear entertainment

WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

Make sure the anti-theft code for the audio system is entered.
Go into the Diagnostic Menu and use the "Navi System Link" test (see NAVI SYSTEM LINK ).
Are "Radio" and "6CD" icons red?
1. YES - Do the troubleshooting for the voice guidance cannot be heard (see VOICE GUIDANCE CANNOT BE HEARD ).
2. NO - Go to step 3.
Substitute a known-good navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck.
Can the navigation control audio/CD?
1. YES - Replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).
2. NO - Do the audio system troubleshooting.