XM Radio Display Is Blank and No Station Information Is Displayed
XM radio display is blank and no station information is displayedNOTE: Always check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to LOCK (0).
2. Disconnect XM receiver connector A (14P).
3. Check the voltage between XM receiver connector A (20P) terminal No. 1 and body ground.
Is there battery voltage?
YES - Go to step 4.
NO - Repair an open in the wire between fuse No. 5 (7.5 A) in the driver's under-dash fuse/relay box and XM receiver connector A (20P) terminal No. 1.
4. Turn the ignition switch ON (II).
5. Check the voltage between XM receiver connector A (20P) terminal No. 2 and body ground.
Is there battery voltage?
YES - Go to step 6.
NO - Repair an open in the wire between fuse No. 32 (10 A) in the driver's under-dash fuse/relay box and XM receiver connector A (20P) terminal No. 2.
6. Check the voltage between XM receiver connector A (20P) terminal No. 12 and body ground.
Is there battery voltage?
YES - Go to step 7.
NO - Repair an open in the wire between fuse No. 21 (10 A) in the driver's under-dash fuse/relay box and XM receiver connector A (20P) terminal No. 12.
7. Reconnect the XM receiver connector A (20P).
8. Check for voltage between XM receiver connector A (20P) terminal No. 11 and body ground.
Is there less than 0.1V?
YES - Go to step 9.
NO - Repair an open in the wire between XM receiver connector A (20P) terminal No. 11 and body ground (G602).
9. Disconnect audio unit connector C (14P), XM receiver connector A (20P), navigation unit connector A (20P), and display panel control unit connector (20P).
10. Check for continuity between XM receiver connector A (20P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and the XM receiver connector A (20P) No. 18 terminal (the harness shield).
Is there continuity?
YES - Repair a short in the appropriate wire between the audio unit and the XM receiver or replace the appropriate shielded harness.
NO - Go to step 11.
11. Check for continuity between XM receiver connector A (20P) and audio unit connector C (14P) according to the table.
Is there continuity?
YES - Go to step 12.
NO - Repair open in the appropriate wire between the audio unit and the XM receiver.
12. Check for continuity between XM receiver connector A (20P) and navigation unit connector A (20P) according to the table.
Is there continuity?
YES - Go to step 13.
NO - Repair open in the appropriate wire between navigation unit and the XM receiver.
13. Check for continuity between XM receiver connector A (20P) and the display panel control unit (20P) connector according to the table.
Is there continuity?
YES - Substitute a known-good XM receiver, then reconnect all of the connectors and recheck. If the symptom/indicated goes away, replace the original XM receiver. If the symptom/indicated is still present replace the audio unit.
NO - Repair open in the appropriate wire between the display panel control unit and the XM receiver.