Symptom Troubleshooting

Symptom Troubleshooting: XM radio display is blank and no station information is displayed

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

NOTE:

- Check the vehicle battery condition first.

- Check the connectors for poor connections or loose terminals.

1. Disconnect XM receiver connector A (14P).

2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

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

Is there battery voltage?
YES - Go to step 4.

NO - Repair open in the wire between XM receiver connector A (14P) terminal No. 1 and audio unit connector C (14P) terminal No. 1 and USB adapter unit connector A (14P) terminal No. 1.






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

Is there battery voltage?
YES - Go to step 5.

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






5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

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

7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

8. 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 9.

NO - Repair open in the wire between XM receiver connector A (14P) terminal No. 11, audio unit connector C (14P) terminal No. 11, and USB adapter unit connector A (14P) terminal No. 11.






9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

10. Disconnect these items:
- Audio unit connector C (14P)

- HandsFreeLink control unit 28P connector

- XM receiver connector A (14P)

- USB adapter unit connector A (14P)

11. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

12. Measure the voltage between audio unit connector C (14P) terminals No. 9 and No. 10 to body ground individually.

Is there less than 0.2 V?
YES - Go to step 13.

NO - Substitute a known-good audio unit, Audio Unit Removal/Installation (Without Navigation) and recheck. If 0.2 V or less are present, replace the original audio unit.






13. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

14. Check for continuity between the following terminals of the audio unit connector C (14P) and XM receiver connector A (14P).





Is there continuity?
YES - Go to step 15.

NO - There is an open in the wire(s) between the audio unit and the XM receiver. Replace the affected shielded harness.






15. Check for continuity between XM receiver connector A (14P) and body ground as shown.

Is there continuity?
YES - There is a short to body ground in the wire(s) between the audio unit and the XM receiver. Replace the affected shielded harness.

NO - Go to step 16.






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





Is there continuity between any of the terminals?
YES - There is a short in the wires between the audio unit and the XM receiver. Replace the affected shielded harness.

NO - Substitute a known-good audio unit, Audio Unit Removal/Installation (Without Navigation) and recheck. If the symptom/indication goes away, replace the original audio unit. If the symptom is still present, substitute a known-good XM receiver, XM Receiver Removal/Installation (Without Acura Link) and recheck. If the symptom/indication goes away, replace the original XM receiver.