Navigation cannot control XM radio

NOTE:

Always make sure that the correct DVD color and version are installed.
Check any official Honda service website for more service information about the navigation system.

Go into the Diagnostic Menu and use the NAVI SYSTEM LINK TEST .
Is the XM icon red?

YES - Check the connector at the XM receiver and navigation unit 20P connector.

NO - Go to step 2.
Substitute a known-good navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck.
Can the navigation control the XM radio?

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

NO - Do the audio system troubleshooting.