Navigation System Symptom Troubleshooting - Voice control does not work/respond
Voice control does not work/respond
NOTE:
Check the vehicle 12 volt 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:
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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 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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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.
HFL switch input check:

HFL switch input check
?1.
Turn the vehicle to the ON mode.

?2.
Go into the System Diagnostic Mode, and use the Hard Key to check the HFL switch (PICK-UP button, HANG-UP/BACK button, TALK button).

Does all the HFL switch buttons respond?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
2.
Microphone input check:

Microphone input check
?1.
Go into the System Diagnostic Mode, and use the HFT/Mic to check the microphone.

?2.
Press the TALK button, then say ‘‘testing’’ in front of the microphone to check the Mic level.

Is the microphone level OK?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Go to step 4.
3.
Problem verification:

Problem verification
?1.
Turn the vehicle to the OFF (LOCK) mode then 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
     
     
     
4.
Determine possible failure area (microphone signal circuit, others):

Determine possible failure area (microphone signal circuit, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
HFL microphone 8P connector

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
HFL microphone 8P connector: disconnected
Test point 1
HFL microphone 8P connector No. 1
Test point 2
HFL microphone 8P connector No. 2

Is there about 8.0 V?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Go to step 8.
5.
Determine possible failure area (MIC PWR line, others):

Determine possible failure area (MIC PWR line, others)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
HFL microphone 8P connector: disconnected
Test point 1
HFL microphone 8P connector No. 4
Test point 2
Body ground

Is there about 8.0 V?

     
YES
     
     
     
     
NO
     
     
     
Go to step 6.
6.
Open wire check (MIC PWR line):

Open wire check (MIC PWR line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
HFL microphone 8P connector: disconnected
Test point 1
Audio-navigation unit connector C (32P) No. 7
Test point 2
Body ground

Is there about 8.0 V?

     
YES
     
     
     
Repair an open in the wire between the HFL microphone and the audio-navigation unit.?
     
NO
     
     
     
The MIC PWR wire is not open. Go to step 7.
7.
Shorted wire check (MIC PWR line):

Shorted wire check (MIC PWR line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Audio-navigation unit connector C (32P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
HFL microphone 8P connector: disconnected
 
Audio-navigation unit connector C (32P): disconnected
Test point 1
Audio-navigation unit connector C (32P) No. 7
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
There is a short to body ground in the wire between the HFL microphone and the audio-navigation unit. Replace the affected shielded harness.?
     
NO
     
     
     
8.
Determine possible failure area (MIC? line, others):

Determine possible failure area (MIC? line, others)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
HFL microphone 8P connector: disconnected
Test point 1
HFL microphone 8P connector No. 2
Test point 2
Body ground

Is there about 8.0 V?

     
YES
     
     
     
Repair an open in the wire between the HFL microphone and the audio-navigation unit.?
     
NO
     
     
     
Go to step 9.
9.
Open wire check (MIC+ line):

Open wire check (MIC+ line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
HFL microphone 8P connector: disconnected
Test point 1
Audio-navigation unit connector C (32P) No. 22
Test point 2
Body ground

Is there about 8.0 V?

     
YES
     
     
     
Repair an open in the wire between the HFL microphone and the audio-navigation unit.?
     
NO
     
     
     
The MIC+ wire is not open. Go to step 10.
10.
Shorted wire check (MIC+ line):

Shorted wire check (MIC+ line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Audio-navigation unit connector C (32P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
HFL microphone 8P connector: disconnected
 
Audio-navigation unit connector C (32P): disconnected
Test point 1
Audio-navigation unit connector C (32P) No. 22
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
There is a short to body ground in the wire between the HFL microphone and the audio-navigation unit. Replace the affected shielded harness.?
     
NO
     
     
     
The MIC+ wire is not shorted to ground. Go to step 11.
11.
Shorted wire check (MIC+ line to MIC? line, SH MIC line):

Shorted wire check (MIC+ line to MIC? line, SH MIC line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
HFL microphone 8P connector: disconnected
 
Audio-navigation unit connector C (32P): disconnected
Test point 1
Audio-navigation unit connector C (32P) No. 6
Test point 2
Audio-navigation unit connector C (32P) No. 22


Is there continuity?

     
YES
     
     
     
There is a short in the wires between the HFL microphone and the audio-navigation unit. Replace the affected shielded harness.?
     
NO