Navigation System Symptom Troubleshooting - Voice control does not work/respond
Voice control does not work/respond
NOTE:
Check the vehicle battery condition first.
Make sure that the latest navigation software is installed.
Before assuming that a voice complaint is hardware related, ensure that the voice control system is being operated correctly.
If possible, have the customer demonstrate their concern, then compare it to a known-good vehicle of the same year/trim with the same software version. If the customer's concern is duplicated on the known-good vehicle, it is a characteristic of the system.
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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)
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Close the windows and moonroof
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Set the fan speed to low (1 or 2)
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Adjust the air flow from the air conditioning vents so that they do not blow against the microphone on the ceiling
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Pause after pressing the TALK button then give a voice command clearly in a natural speaking voice. If the system cannot recognize your command, speak louder
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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
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.
Check the connectors for poor connections or loose terminals.
1.
Problem verification:

Problem verification
?1.
Press the engine start/stop button to select the ON mode.

?2.
Pressing the TALK button, then give a voice command ‘‘Audio’’ clearly in a natural speaking voice.

Does the audio system turn on by the voice command?

     
YES
     
     
     
Intermittent failure, the system is OK at this time.?
     
NO
     
     
     
The failure is duplicated, go to step 2.
2.
DTC check:

DTC check
?1.
Check for hard error codes.

Are there any navigation DTCs indicated?

     
YES
     
     
     
Go to indicated DTC's troubleshooting.?
     
NO
     
     
     
Go to step 3.
3.
Voice control switch check:

Voice control switch check
?1.
Go into the System Diagnostic Mode, and use the Mic Level under the Functional Setup menu.

Is the HFL-navigation voice control switch buttons OK?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
4.
Determine possible failure area (audio-navigation unit, others):

Determine possible failure area (audio-navigation unit, others)
?1.
Go into the System Diagnostic Mode, and use the Mic/STRG SW under the Functional Setup menu.

?2.
Check the Mic level by pressing the TALK button on the steering wheel, then say ‘‘testing’’ in front of the microphone.

Is the microphone level OK?

     
YES
     
     
     
     
NO
     
     
     
Go to step 5.
5.
Open wire check (HFT-NAVI MIC+ line, HFT-NAVI MIC? line):

Open wire check (HFT-NAVI MIC+ line, HFT-NAVI MIC? line)
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connectors.
HandsFreeLink control unit connector A (32P)
Audio-navigation unit connector F (18P)

?3.
Check for continuity between test points 1 and 2.
Test condition
OFF mode
 
HandsFreeLink control unit connector A (32P): disconnected
 
Audio-navigation unit connector F (18P): disconnected
Test circuit
HFT-NAVI MIC+
Test point 1
HandsFreeLink control unit connector A (32P) No. 18 (GRN)
Test point 2
Audio-navigation unit connector F (18P) No. 13 (GRN)

Test circuit
HFT-NAVI MIC?
Test point 1
HandsFreeLink control unit connector A (32P) No. 17 (RED)
Test point 2
Audio-navigation unit connector F (18P) No. 14 (RED)


Is there continuity?

     
YES
     
     
     
The HFT-NAVI MIC+ and the HFT-NAVI MIC? wires are OK. Go to step 6.
     
NO
     
     
     
There is an open in the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.?
6.
Determine possible failure area (HFL-navigation microphone, others):

Determine possible failure area (HFL-navigation microphone, others)
?1.
Substitute a known-good HFL-navigation microphone.

?2.
Reconnect all the connectors.

?3.
Go into the System Diagnostic Mode, and use the Mic/STRG SW under the Functional Setup menu.

?4.
Check the Mic level by pressing the TALK button on the steering wheel, then say ‘‘testing’’ in front of the microphone.

Is the microphone level OK?

     
YES
     
     
     
Replace the original HFL-navigation microphone.?
     
NO
     
     
     
Go to step 7.
7.
HandsFreeLink control unit check (substitution):

HandsFreeLink control unit check (substitution)
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Substitute a known-good HandsFreeLink control unit, and recheck.

Does the symptom go away?

     
YES
     
     
     
Replace the original HandsFreeLink control unit.?
     
NO