AcuraLink Messages Cannot Be Heard or are Weak (With 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 retest. If there are no B-CAN codes, substitute a known-good AcuraLink control unit (XM receiver). Acura Link Control Unit (XM Receiver) Removal/Installation


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 C (14P).

6. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) and audio-navigation unit connector C (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 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 terminal 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 0.1 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. Remove the center console panel. Center Console Panel Removal/Installation

13. Disconnect the HandsFreeLink control unit 28P connector. Service and Repair

14. 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 15.

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






15. Check for continuity between the audio-navigation unit connector B (24P) and body ground 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 16.






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





Is there continuity between 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 17.






17. Substitute a known-good AcuraLink control unit (XM receiver), Acura Link 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). Acura Link Control Unit (XM Receiver) Removal/Installation

NO - Substitute a known-good HandsFreeLink control unit, Service and Repair and recheck. If symptom goes away, replace the original HandsFreeLink control unit. If symptom is still present, replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)