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:
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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-navigation voice control switch operation check:

HFL-navigation voice control switch operation 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-navigation voice control switch.

Do all the HFL-navigation voice control switch buttons respond?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
Go to step 11.
2.
Microphone operation check:

Microphone operation check
?1.
Go into the System Diagnostic Mode, and use the 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 (MIC+ line, others):

Determine possible failure area (MIC+ line, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Front HFL-navigation-ANC/active sound control 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
 
Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
Test point 1
Front HFL-navigation-ANC/active sound control microphone 8P connector No. 1
Test point 2
Front HFL-navigation-ANC/active sound control microphone 8P connector No. 2

Is there about 8.0 V?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Go to step 9.
5.
Open wire check (MIC+ line):

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

?2.
Disconnect the following connector.
Audio-navigation unit connector J (28P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
 
Audio-navigation unit connector J (28P): disconnected
Test point 1
Front HFL-navigation-ANC/active sound control microphone 8P connector No. 2
Test point 2
Audio-navigation unit connector J (28P) No. 11

Is there continuity?

     
YES
     
     
     
The MIC+ wire is not open. Go to step 6.
     
NO
     
     
     
There is an open in the wire between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit. Replace the affected shielded harness.?
6.
Shorted wire check (MIC+ line):

Shorted wire check (MIC+ line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
 
Audio-navigation unit connector J (28P): disconnected
Test point 1
Audio-navigation unit connector J (28P) No. 11
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
There is a short to body ground in the wire between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit. Replace the affected shielded harness.?
     
NO
     
     
     
The MIC+ wire is not shorted. Go to step 7.
7.
Shorted wire check (MIC+ line to MIC- line, SH MIC line):

Shorted wire check (MIC SIG+ line to MIC- line, SH MIC line)
?1.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
 
Audio-navigation unit connector J (28P): disconnected
Test circuit 1
  
Test point 1
Audio-navigation unit connector J (28P) No. 10
Test point 2
Audio-navigation unit connector J (28P) No. 11


Is there continuity?

     
YES
     
     
     
There is a short in the wires between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit. Replace the affected shielded harness.?
     
NO
     
     
     
The MIC+ wire is OK. Go to step 8.
8.
Microphone check (substitution):

Microphone check (substitution)
?1.
Substitute a known-good front HFL-navigation-ANC/active sound control microphone, and recheck.

Does the symptom go away?

     
YES
     
     
     
     
NO
     
     
     
9.
Determine possible failure area (MIC PWR line, MIC- line):

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

Is there about 8.0 V?

     
YES
     
     
     
There is an open in the wire between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit. Replace the affected shielded harness.?
     
NO
     
     
     
Go to step 10.
10.
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
 
Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
Test point 1
Audio-navigation unit connector J (28P) No. 25
Test point 2
Body ground

Is there about 8.0 V?

     
YES
     
     
     
Repair an open in the wire between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit.?
     
NO
     
     
     
11.
Determine possible failure area (Audio remote switch circuit, others):

Determine possible failure area (Audio remote switch circuit, others)
?1.
Go into the System Diagnostic Mode, and use the Hard Key to check the audio remote switch.

Does all the audio remote switch buttons respond?

     
YES
     
     
     
Go to step 12.
     
NO
     
     
     
12.
HFL-navigation voice control switch check:

HFL-navigation voice control switch check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Do the HFL Switch Test.

Is the HFL-navigation voice control switch OK?

     
YES
     
     
     
Go to step 13.
     
NO
     
     
     
13.
Determine possible failure area (Audio-navigation unit, others):

Determine possible failure area (Audio-navigation unit, others)
?1.
Reconnect the HFL-navigation voice control switch 6P connector.

?2.
Disconnect the following connectors.
Audio-navigation unit connector A (24P)
Audio-navigation unit connector B (20P)

?3.
Measure the resistance between test points 1 and 2 as specified in the table.
Test condition
Vehicle OFF (LOCK) mode
 
Audio-navigation unit connector A (24P): disconnected
 
Audio-navigation unit connector B (20P): disconnected
Test point 1
Audio-navigation unit connector A (24P) No. 11
Test point 2
Audio-navigation unit connector B (20P) No. 12

Button held down
HANG-UP/BACK
PICK-UP
TALK
No button pressed
Resistance
About 47 ?
About 222 ?
About 2.25 k?
About 10 k?

Is the resistance OK?

     
YES
     
     
     
Go to step 14.
     
NO
     
     
     
Go to step 15.
14.
Audio-navigation unit check (HFT/NAVI REMOTE SW line):

Audio-navigation unit check (HFT/NAVI REMOTE SW line)
?1.
Disconnect the following connector.
HFL-navigation voice control switch 6P connector

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
HFL-navigation voice control switch 6P connector: disconnected
 
Audio-navigation unit connector B (20P): disconnected
Test point 1
Audio-navigation unit connector B (20P) No. 12
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Repair a short to body ground in the wire between the audio-navigation unit and the HFL-navigation voice control switch. If the wire is OK, replace the cable reel.?
     
NO
     
     
     
15.
Open wire check (HFT/NAVI REMOTE SW line):

Open wire check (HFT/NAVI REMOTE SW line)
?1.
Disconnect the following connector.
HFL-navigation voice control switch 6P connector

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Audio-navigation unit connector B (20P): disconnected
 
HFL-navigation voice control switch 6P connector: disconnected
Test point 1
Audio-navigation unit connector B (20P) No. 12
Test point 2
HFL-navigation voice control switch 6P connector No. 3


Is there continuity?

     
YES
     
     
     
The HFT/NAVI REMOTE SW wire is OK. Go to step 16.
     
NO
     
     
     
Repair an open in the wire between the audio-navigation unit and the HFL-navigation voice control switch. If the wire is OK, replace the cable reel.?
16.
Open wire check (REMOTE SW GND line):

Open wire check (REMOTE SW GND line)
?1.
Disconnect the following connector.
Audio remote switch 12P connector

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Audio remote switch 12P connector: disconnected
 
HFL-navigation voice control switch 6P connector: disconnected
Test point 1
Audio remote switch 12P connector No. 4
Test point 2
HFL-navigation voice control switch 6P connector No. 4


Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Repair an open in the wire between the audio remote switch and the HFL-navigation voice control switch.?