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.

- Check the connectors for poor connections or loose terminals.

1. Disconnect XM receiver connector A (14P) and USB adapter unit connector A (14P).

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

Is there battery voltage?
YES - Go to step 3.

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






3. Reconnect XM receiver connector A (14P).

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

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

Is there less than 0.1 V?
YES - Go to step 6.

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






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

7. 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 8.

NO - Substitute known-good XM receiver, Service and Repair and recheck. If 10 V or more are present, replace the original XM receiver.






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

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

Is there less than 0.5 V?
YES - Go to step 10.

NO - Substitute a known-good navigation unit Service and Repair and recheck. If 0.5 V or less are present, replace the original navigation unit.






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

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

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

Is there continuity?
YES - Go to step 13.

NO - Short to body ground in the wire between the XM receiver and the navigation unit. Replace the affected shielded harness.






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





Is there continuity between any of the terminals?
YES - Short in the wire(s) between the navigation unit and the XM receiver. Replace the affected shielded harness.

NO - Go to step 14.






14. Check for continuity between 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 symptom/indication is still present, replace the navigation unit. Service and Repair

NO - Open in the wire(s) between the navigation unit and the XM receiver. Replace affected shielded harness.