The HFL Messages and Voice Prompts Cannot Be Heard or Are Weak (With Navigation)
HandsFreeLink System Symptom Troubleshooting - The HFL messages and voice prompts cannot be heard or are weak
The HFL messages and voice prompts cannot be heard or are weak (with navigation)
NOTE: Check the vehicle battery condition first Battery Test.
1. Turn the ignition switch to ON (II).
2. Turn on the audio system, and check for sound in each mode (AM/FM, XM, USB, CD or DVD, navigation, etc.).
Is the sound normal?
YES -
Go to step 3.
NO -
Go to Sound Quality Diagnosis Audio System Sound Quality Diagnosis or No sound is heard from the speaker(s) (display is normal) troubleshooting No Sound Is Heard From the Speaker(s) (Display Is Normal) (With ELS Audio).
3. Do the HFL Self-Diagnostic Function.
Do you hear, "The hands free system is OK"?
YES -
Intermittent failure, the system is OK at this time.
NO -
Go to step 4.
4. Turn the ignition switch to LOCK (0).
5. Connect the HDS to the DLC.
6. Turn the ignition switch to ON (II).
7. Check for DTCs with the HDS.
Are there any DTCs indicated?
YES -
Troubleshoot the indicated DTCs.
NO -
Go to step 8.
8. Turn the ignition switch to LOCK (0).
9. Do the HFL Switch Test HFL Switch Test.
Is the switch OK?
YES -
Go to step 10.
NO -
Replace the HFL-navigation voice control switch Service and Repair.
10. Disconnect audio-navigation unit connector B (24P) and the HandsFreeLink control unit 28P connector.
11. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 11 and No. 25 and audio-navigation unit connector B (24P) terminals No. 5 and No. 16 respectively.
Is there continuity?
YES -
Go to step 12.
NO -
There is an open in the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.
12. Check for continuity between body ground and audio-navigation unit connector B (24P) terminals No. 5 and No. 16 individually.
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 13.
13. Check for continuity between the terminals of audio-navigation unit connector B (24P) according to the table.
Is there continuity?
YES -
There is a short in the wires between the HandsFreeLink control unit and the audio-navigation 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. If the symptom/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.