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).

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 -

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

4. Turn the ignition switch to LOCK (0).

5. Disconnect these items:

- AcuraLink control unit (XM receiver) connector A (32P)
- Audio-Navigation unit connector D (14P)
- HandsFreeLink control unit 28P connector

6. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) and audio-navigation unit connector D (14P) 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 body ground and AcuraLink control unit (XM receiver) connector A (32P) according to the table.









Is there continuity?

YES -

There is a 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 audio-navigation unit connector D (14P) 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).

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

12. Disconnect audio-navigation unit connector B (24P).

13. Check for continuity between the HandsFreeLink control unit 28P connector and audio-navigation unit connector B (24P) according to the table.













Is there continuity?

YES -

Go to step 14.

NO -

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

14. Check for continuity between body ground and audio-navigation unit connector B (24P) according to the table.









Is there continuity?

YES -

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

NO -

Go to step 15.

15. Check for continuity between the terminals of audio-navigation unit connector B (24P) according to the table.









Is there continuity between any of the terminals?

YES -

There is a short to the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.�

NO -

Go to step 16.

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

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 -

Substitute a known-good HandsFreeLink control unit Service and Repair, and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit Service and Repair. If the symptom is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.�