XM Radio Display Is Blank and No Station Information Is Displayed (Without AcuraLink)

XM radio display is blank and no station information is displayed (without AcuraLink)

NOTE:
- Check vehicle battery condition first.
- 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. Measure the voltage between XM receiver connector A (14P) No. 1 terminal and body ground.






Is there battery voltage?

YES - Go to step 4.

NO - Repair 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 (14P) No. 1 terminal.

4. Turn the ignition switch to ON (II).
5. Measure the voltage between XM receiver connector A (14P) No. 2 terminal and body ground.






Is there battery voltage?

YES - Go to step 6.

NO - Repair open in the wire between audio unit connector C (14P) No. 2 terminal and XM receiver connector A (14P) No. 2 terminal.

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






Is there less than 0.1 V?

YES - Go to step 8.

NO - Repair open in the wire between XM receiver connector A (14P) No. 11 terminal and body ground (G602).

8. Turn the ignition switch to LOCK (0).
9. Disconnect audio unit connector C (14P), XM receiver connector A (14P), navigation unit connector A (20P), and the display panel control unit connector (20P).
10. Check for continuity between XM receiver connector A (14P) 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 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 (14P) 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 (14P) 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 (14P) 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.