Symptom Troubleshooting
Symptom Troubleshooting: The communication with cell phone is interrupted or changes
The communication with cell phone is interrupted or changes
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 support desk at 888-528-7876 to make sure the cell phone is compatible with the HFL system and that there are no known issues.
1. Turn on the audio unit, and check for sound in each mode (AM, FM, XM, and CD).
Does the symptom occur?
YES -
- With ELS audio system: Substitute a known-good audio unit. Audio Unit Removal/Installation (With AcuraLink) If the symptom/indication goes away, replace the original audio unit.
- With premium audio system: Substitute a known-good audio unit. Audio Unit Removal/Installation (With Premium Audio System) If the symptom/indication goes away, replace the original audio unit.
NO - Go to step 2.
2. Duplicate the symptom with the Bluetooth phone.
Does the symptom occur in a specific place or under a specific condition?
YES - Operation is normal: Bluetooth audio is OK at this time. Electric wave or other 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. Check the connections at the HandsFreeLink control unit 28P connector terminals.
Are the connections and terminals connected properly?
YES - Go to step 6.
NO - Repair the connection, and recheck.
6. Turn the ignition switch to LOCK (0).
7. Disconnect the HandsFreeLink control unit 28P connector and audio unit connector E (14P).
8. 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 in the wire(s) between the HandsFreeLink control unit and body ground.
NO - Go to step 9.
9. Check for continuity between audio unit connector E (14P) and HandsFreeLink control unit 28P connector according to the table.
Is there continuity?
YES - Go to step 10.
NO - There is an open in the wire(s) between the audio unit and the HandsFreeLink control unit. Replace the affected shielded harness.
10. 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 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.
