Symptom Troubleshooting

HandsFreeLink System Symptom Troubleshooting - The communication with cell phone is interrupted or changes

The communication with cell phone is interrupted or changes (with navigation)

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- Check if the audio system functions normally.
- The connected device may not function properly when it is in the trunk or in a metallic case.
- Check online at www.acura.com/handsfreelink or call the HFL call center at 888-528-7876 to make sure the Bluetooth phone is compatible with the HFL system and that there are no known issues.

1. Turn on the audio-navigation unit, and check for sound in each mode (AM/FM, XM, and CD).

Does the symptom occur?

YES -

Substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation (With Navigation), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation (With Navigation).�

NO -

Go to step 2.

2. Check the communication abnormality of connected device.

Does the symptom occur in a specific place or under an specific condition?

YES -

Operation is normal: Bluetooth audio is OK at this time. Influence or electric wave interference.�

NO -

Go to step 3.

3. If you have the client's Bluetooth phone, go to step 4. Otherwise, pair a known-good Bluetooth phone to the client's vehicle.

Can you pair the Bluetooth phone, and does it operate normally?

YES -

The client's Bluetooth phone is defective or not compatible.�

NO -

Go to step 5.

4. Pair the client's Bluetooth phone to a known-good vehicle.

Can you pair the Bluetooth phone, and does it operate normally?

YES -

Go to step 5.

NO -

The client's Bluetooth phone is defective or not compatible.�

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

6. Check the connections at the HandsFreeLink control unit 28P connector terminals.

Are the connections and terminals connected properly?

YES -

Go to step 7.

NO -

Repair the connection, and recheck.�

7. Remove the center console panel Center Console Panel Removal/Installation.

8. Disconnect the HandsFreeLink control unit 28P connector, and the audio-navigation unit connector C (14P).

9. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table.









Is there continuity?

YES -

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

NO -

Go to step 10.

10. Check for continuity between audio-navigation unit connector C (14P) and the HandsFreeLink control unit 28P connector according to the table.













Is there continuity?

YES -

Go to step 11.

NO -

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

11. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table.









Is there continuity?

YES -

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

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.�