Diesel Data: Automotive Repair

Symptom Troubleshooting




Navigation System Symptom Troubleshooting - Voice control does not work/ respond

Voice control does not work/respond

Diagnostic Test: Mic Level

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- Make sure that the correct navigation DVD color and version are installed.
- Check any official Honda service website for more service information about the navigation buttons.
- Before assuming that a voice complaint is hardware related, ensure that the voice control system is being operated correctly.
- Make sure you are on the correct screen when trying to issue a voice command. For instance, the command "Find the nearest Italian Restaurant" only works on Map screen. (See the navigation system manual for a complete list of allowed voice commands for the information being displayed).
- Close the windows and sunroof.
- Set the fan speed to low (1 or 2).
- Adjust the air flow from the air conditioning vents so that they do not blow against the microphone on the ceiling.
- Pause after pressing the navigation TALK button then give a voice command clearly in a natural speaking voice.
- If you speak a command with something in your mouth, or your voice is too husky or high pitched, the system may misunderstand your command.

- Check for a loose roof console microphone; if it's loose, tighten it.
- Before troubleshooting, make sure you have the audio and navigation system anti-theft codes.
- After troubleshooting, enter the audio and navigation system anti-theft codes.
- Determine if the problem only happens to one person, or everyone who uses the system.
- If the system only has a problem with one person's voice, this should be considered a system limitation.

1. Connect the HDS and check for CAN related DTCs.

Are there any CAN related DTCs?

YES -

Troubleshoot the CAN related DTC, then retest.�

NO -

Go to step 2.

2. Check the HFL system operation making sure that the HFL system responds to voice commands.

Does the HFL system operate correctly and respond to voice commands properly?

YES -

Go to step 3.

NO -

Troubleshoot the HFL system.�

3. Go into the Diagnostic Menu and use the Mic Level test under Functional Setup to check the operation of the navigation TALK and navigation BACK buttons.

Are the NAVIGATION TALK and NAVIGATION BACK buttons operational?

YES -

Go to step 10.

NO -

Go to step 4.

4. Check the audio remote switch operation (volume up, volume down, CH (+), CH (-), MODE).

Is the audio remote switch operational?

YES -

Go to step 5.

NO -

Go to audio system audio remote switch does not work properly Audio Remote Switch Does Not Work Properly (Except 1CD type).�

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

6. Do the navigation voice control switch test Testing and Inspection.

Is the voice control switch OK?

YES -

Go to step 7.

NO -

Replace the navigation voice control switch Testing and Inspection, and recheck the symptom.�

7. Disconnect navigation unit connector C (16P) and navigation voice control switch 5P connector.

8. Check for continuity between navigation unit connector C (16P) terminal No. 12 and body ground.





Is there continuity?

YES -

Repair a short to body ground in the wire between the navigation unit and the navigation voice control switch.�

NO -

Go to step 9.

9. Check for continuity between navigation unit connector C (16P) terminal No. 12 and navigation voice control switch 5P connector terminal No. 2.





Is there continuity?

YES -

Go to step 10.

NO -

Repair an open in the wire between the navigation unit and the navigation voice control switch. If the wire is OK, replace the cable reel.�

10. Use the Mic Level diagnostic under Functional Setup to check the operation of the microphone.

Is the microphone operational?

YES -

Check the operation of the voice control system (see the Navigation System Manual) and compare system operation with a known-good vehicle.�

NO -

Go to step 11.

11. Check the HandsFreeLink system.

Is the HandsFreeLink system OK?

YES -

Go to step 12.

NO -

Do the HandsFreeLink system troubleshooting.�

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

13. Disconnect navigation unit connector C (16P).

14. Disconnect the HandsFreeLink control unit 28P connector.

15. Check for continuity between navigation unit connector C (16P) terminal No. 8 and body ground.





Is there continuity?

YES -

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

NO -

Go to step 16.

16. Check for continuity between navigation unit connector C (16P) according to the table.













Is there continuity between any of the terminals?

YES -

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

NO -

Go to step 17.

17. Check for continuity between the navigation unit connector C (16P) terminals and the HandsFreeLink control unit 28P connector terminals according to the table.









Is there continuity?

YES -

Substitute a known- good navigation unit Service and Repair, and recheck. If the symptom/indication goes away, replace the original navigation unit Service and Repair. If the symptom/indication is still present, replace the HandsFreeLink control unit.�

NO -

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