AcuraLink Messages Cannot Be Heard or Are Weak

AcuraLink Symptom Troubleshooting - AcuraLink messages cannot be heard or are weak

AcuraLink messages cannot be heard or are weak

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

2. Check that the audio system is operating normally and the speaker sound levels are normal from different audio sources (AM/FM, XM, CD/DVDs, navigation, etc.).

Does the audio system work normally and is the audio output from the speaker normal when playing various audio sources?

YES -

Go to step 3.

NO -

Refer to the audio system symptom troubleshooting.�

3. Check the audio system when AcuraLink messages are played.

Does the audio system mute when AcuraLink messages are being played?

YES -

If audio system mutes and plays the messages at a normal volume, the system is OK at this time. If the messages are weaker than normal, go to step 4.

NO -

Check for B-CAN codes. Repair any B-CAN codes, then recheck. If there are no B-CAN codes, substitute a known-good AcuraLink control unit (XM receiver) AcuraLink Control Unit (XM Receiver) Removal/Installation, and recheck.�

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

5. Disconnect AcuraLink control unit (XM receiver) connector A (32P) and audio-navigation unit connector H (28P).

6. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) and audio-navigation unit connector H (28P) according to the table.













Is there continuity?

YES -

Go to step 7.

NO -

There is an open in the wire(s) between the AcuraLink control unit (XM receiver) and the audio-navigation unit. Replace the affected shielded harness.�

7. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) and body ground according to the table.









Is there continuity?

YES -

There is short to body ground in the wire(s) between the AcuraLink control unit (XM receiver) and the audio-navigation unit. Replace the affected shielded harness.�

NO -

Go to step 8.

8. Check for continuity between the terminals of AcuraLink control unit (XM receiver) connector A (32P) according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wires between the AcuraLink control unit (XM receiver) and the audio-navigation unit. Replace the affected shielded harness.�

NO -

Go to step 9.

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

10. Measure the voltage between AcuraLink control unit (XM receiver) connector A (32P) and body ground according to the table.









Is there less than 0.2 V

YES -

Go to step 11.

NO -

There is a short to power in the wire(s) between the AcuraLink control unit (XM receiver) and the audio-navigation unit. Replace the affected shielded harness.�

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

12. Substitute a known-good AcuraLink control unit (XM receiver) AcuraLink Control Unit (XM Receiver) Removal/Installation, and recheck the function.

Does the problem go away?

YES -

Update the AcuraLink control unit Programming and Relearning if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (XM receiver) AcuraLink Control Unit (XM Receiver) Removal/Installation.�

NO -

Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.�