Acuralink Messages Cannot Be Heard or Are Weak

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 - 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).


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

5. Disconnect AcuraLink control unit (XM receiver) connector A (32P) and navigation unit connector D (5P).

6. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) and navigation unit connector D (5P) 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 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 a short to body ground in the wire(s) between the AcuraLink control unit (XM receiver) and the 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 wire(s) between the AcuraLink control unit (XM receiver) and the 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 the 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 navigation unit. Replace the affected shielded harness.






11. 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 navigation unit. Service and Repair