Navigation Cannot Control XM Radio

Navigation cannot control XM radio

1. Turn the ignition switch ON (II).
2. 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.

NO - Go to step 3.

3. Turn the ignition switch to LOCK (0).
4. Substitute a known-good navigation unit, and recheck.

Can the navigation control the XM radio?

YES - Replace the original navigation unit.

NO - Do the audio system troubleshooting.