XM Radio Display Is Blank and No Station Information Is Displayed (With Navigation)

Symptom Troubleshooting: XM radio display is blank and no station information is displayed

XM radio display is blank and no station information is displayed (with navigation)

NOTE:

- Check the vehicle battery condition first. Testing and Inspection

- Check the connectors for poor connections or loose terminals.

1. Measure the voltage between XM receiver connector A (14P) terminal No. 1 and body ground.

Is there battery voltage?
YES - Go to step 2.

NO - Repair an open in the wire between the XM receiver and the audio-navigation unit connector.






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

3. Measure the voltage between XM receiver connector A (14P) terminal No. 11and body ground.

Is there less than 0.2 V?
YES - Go to step 4.

NO - Repair an open or high resistance in the wire between the XM receiver and the audio-navigation unit.






4. Turn the ignition switch to LOCK (0).

5. Measure the voltage between XM receiver connector A (14P) terminal No. 2 and body ground.

Is there 10 V or more present?
YES - Go to step 6.

NO - Check for open in the wire between the XM receiver and the audio-navigation unit. If the wire is OK, replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)






6. Turn the ignition switch to ON (II).

7. Measure the voltage between XM receiver connector A (14P) terminal No. 2 and body ground.

Is there 2.0 V or more present?
YES - Substitute a known-good audio-navigation unit, Audio-Navigation Unit Removal/Installation (With Navigation) and recheck. If 2.0 V or more are present, replace the original audio-navigation unit.

NO - Go to step 8.






8. Turn the ignition switch to LOCK (0).

9. Disconnect audio-navigation unit connector E (14P), USB adapter unit connector A (14P), and XM receiver connector A (14P).

10. Check for continuity between body ground and audio-navigation unit connector E (14P) terminals No. 9 and No. 10 individually.

Is there continuity?
YES - Go to step 11.

NO - There is a short to body ground in the wire between the XM receiver, USB adapter unit, and the audio-navigation unit. Replace the affected shielded harness.






11. Check for continuity between XM receiver connector A (14P) according to the table.





Is there continuity between any of the terminals?
YES - There is a short in the wires between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.

NO - Go to step 12.






12. Check for continuity between audio-navigation unit connector E (14P) and XM receiver connector A (14P) according to the table.





Is there continuity?
YES - Substitute a known-good XM receiver, Service and Repair then reconnect all connectors and recheck. If the symptom/indication goes away, replace the original XM receiver. If the symptom/indication is still present, replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)

NO - There is an open in the wire(s) between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.