Step
Inspection
Action
1
VERIFY MALFUNCTION SYMPTOM
• Switch the ignition ON (engine off or on).
• Turn the audio unit power on and select NAVI mode.
• Operate the route guidance mode.
• Is voice output?
Yes
System is normal.
(Explain to the customer that voice guidance only begins if the route guidance mode is activated.)
No
Go to the next step.
2
VERIFY IF MALFUNCTION CAUSE IS VOICE GUIDANCE VOLUME ADJUSTMENT MALFUNCTION
• Press the button shown in the figure to display "Volume".
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• Is "Volume" set at "0%"?
Yes
Move the volume bar in the direction of the arrow shown in the figure to set "Volume" to "0%" or more , then go to the next step.
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No
Go to the next step.
3
VERIFY IF MALFUNCTION CAUSE IS VOICE GUIDANCE VOLUME ADJUSTMENT MALFUNCTION
• Turn the POWER/VOLUME switch with "Volume" displayed to verify the voice guidance volume.
With POWER/VOLUME switch on left side
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With POWER/VOLUME switch on right side
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• Is "Navigation Volume" set at "0"?
Yes
Turn the POWER/VOLUME switch to set the "Navigation Volume" to 0 or more, then go to the next step.
With POWER/VOLUME switch on left side
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With POWER/VOLUME switch on right side
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No
Go to the next step.
4
DETERMINE IF MALFUNCTION CAUSE IS POOR AUDIO VOLUME ADJUSTMENT
• Switch to the audio mode.
• Operate the POWER/VOLUME switch and change the audio unit volume.
• Is audio output?
Yes
Go to the next step.
No
Perform inspection referring to NO SOUND FROM ALL SPEAKERS [ENTIRE AUDIO SYSTEM]
5
VERIFY IF MALFUNCTION CAUSE WAS CORRECTED
• Switch to the NAVI mode.
• Operate the route guidance mode.
• Is voice output?
Yes
System is normal.
(Explain to the customer that the cause was a voice guidance volume and audio system volume adjustment malfunction.)
No
Go to the next step.
6
DETERMINE IF MALFUNCTION CAUSE IS CAR-NAVIGATION UNIT
• Switch the ignition ON and launch the audio unit diagnostic assist function.
• Select diagnostic assist code 16 external device connection information clearing.
• Switch the ignition off (LOCK).
• Switch the ignition ON (engine off or on).
• Turn the audio unit power on and select NAVI mode.
• Operate the route guidance mode.
• Is audio output?
Yes
Troubleshooting completed.
No
Replace the car-navigation unit.