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

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

NOTE:
- Check the vehicle battery condition first.
- Check the connectors for poor connections or loose terminals.

1. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) terminal No. 1 and body ground.






Is there battery voltage?

YES - Go to step 2.

NO - Repair open in the wire between No. 7 (7.5 A) fuse in the under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) terminal No. 1.

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






Is there battery voltage?

YES - Go to step 4.

NO - Repair open in the wire between No. 32 (7.5 A) fuse in the under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) terminal No. 2.

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






Is there battery voltage?

YES - Go to step 5.

NO - Repair open in the wire between No. 21 (7.5 A) fuse in the under-dash fuse/relay box and AcuraLink control unit (XM receiver) connector A (20P) terminal No. 12.

5. Measure the voltage between AcuraLink control unit (XM receiver) connector A (20P) 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 AcuraLink control unit (XM receiver) connector A (20P) terminal No. 11 and body ground (G604).

6. Turn the ignition switch to LOCK (0).
7. Remove the audio-HVAC display module assembly, and disconnect audio unit connector B (14P) and display panel control unit connector E (22P).

NOTE: Eject all the discs before removing the audio unit to prevent damaging the CD/DVD player's load mechanism.

8. Disconnect AcuraLink control unit (XM receiver) connector A (20P) and navigation unit connector A (20P).
9. Check for continuity between body ground and AcuraLink control unit (XM receiver) connector A (20P) terminals No. 7 and No. 17 individually.






Is there continuity?

YES - Short to body ground in the wire(s) between AcuraLink control unit (XM receiver), audio unit, display panel control unit and navigation unit. Replace the affected shielded harness.

NO - Go to step 10.

10. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) according to the table.






Is there continuity?

YES - Short in the wire(s) between AcuraLink control unit (XM receiver), audio unit, display panel control unit and navigation unit. Replace the affected shielded harness.

NO - Go to step 11.

11. Check for continuity between AcuraLink control unit (XM receiver) connector A (20P) and audio unit connector B (14P) 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/indication goes away, replace the original AcuraLink control unit (XM receiver). If the symptom/indication is still present, replace the audio unit.

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