Navigation Cannot Control XM Radio

Navigation cannot control XM radio

1. 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 the navigation unit (20P connector).

NO - Go to step 2.

2. Substitute a known-good navigation unit, and recheck.

Can the navigation control the XM radio?

YES - Replace the navigation unit.

NO - Do the audio system troubleshooting.