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

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

NOTE:
- Always check the connectors for poor connections or loose terminals.
- If you replace the XM receiver, the AcuraLink must be reactivated by Acura Client Services.
- Check the vehicle battery condition first.

1. Turn the ignition switch to LOCK (0).
2. Disconnect AcuraLink control unit (XM receiver) connector A (20P).
3. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) 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 (20P) No. 1 terminal.

4. Turn the ignition switch to ON (II).
5. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 2 terminal and body ground.






Is there battery voltage?

YES - Go to step 6.

NO - Repair open in the wire between fuse No. 32 (10 A) in the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) No. 2 terminal.

6. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 12 terminal and body ground.






Is there battery voltage?

YES - Go to step 7.

NO - Repair open in the wire between fuse No. 21 (10 A) in the driver's under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) No. 12 terminal.

7. Reconnect the AcuraLink control unit (XM receiver) connector A (20P).
8. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) No. 11 terminal and body ground.






Is there less than 0.1 V?

YES - Go to step 9.

NO - Repair open in the wire between AcuraLink control unit (XM receiver) connector A (20P) No. 11 terminal and body ground (G602).

9. Disconnect audio unit connector C (14P), AcuraLink control unit (XM receiver) connector A (20P), navigation unit connector A (20P), and display panel control unit connector (20P).
10. Check for continuity between AcuraLink control unit (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 AcuraLink control unit (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 AcuraLink control unit (XM receiver) or replace the appropriate shielded harness.

NO - Go to step 11.

11. Check for continuity between AcuraLink control unit (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 AcuraLink control unit (XM receiver).

12. Check for continuity between AcuraLink control unit (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 the navigation unit and the AcuraLink control unit (XM receiver).

13. Check for continuity between AcuraLink control unit (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 AcuraLink control unit (XM receiver), then reconnect all of the connectors and recheck. If the symptom/indicated goes away, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit. 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 AcuraLink control unit (XM receiver).