NO.4 NO VOICE NAVIGATION [CAR-NAVIGATION SYSTEM]

id0903e8833700

4

Even if the route guidance mode is initiated, there is no voice guidance

Possible DTC

—

POSSIBLE CAUSE

•  Route guidance mode setting mistake

•  Poor volume adjustment of audio system

•  Car-navigation unit malfunction

4	Even if the route guidance mode is initiated, there is no voice guidance
POSSIBLE CAUSE	• Route guidance mode setting mistake • Poor volume adjustment of audio system • Car-navigation unit malfunction

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY MALFUNCTION SYMPTOM

•  Turn the ignition switch to the ON position.

•  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

DETERMINE IF MALFUNCTION CAUSE IS POOR AUDIO VOLUME ADJUSTMENT

•  Turn the audio unit power on and select radio 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]

(See NO.3 NO SOUND FROM ALL SPEAKERS [ENTIRE AUDIO SYSTEM].)

3

DETERMINE IF MALFUNCTION CAUSE IS CAR-NAVIGATION UNIT

•  Turn the ignition switch to the ON position and launch the audio unit diagnostic assist function.
(See DIAGNOSTIC ASSIST FUNCTION [AUDIO].)

•  Select diagnostic assist code 16 external device connection information clearing.

•  Turn the ignition switch to the OFF position.

•  Turn the ignition switch to the ON position.

•  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.

(See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)

4	Even if the route guidance mode is initiated, there is no voice guidance
Possible DTC	—
POSSIBLE CAUSE	• Route guidance mode setting mistake • Poor volume adjustment of audio system • Car-navigation unit malfunction

Step	Inspection		Action
1	VERIFY MALFUNCTION SYMPTOM • Turn the ignition switch to the ON position. • 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.)
1		No	Go to the next step.
2	DETERMINE IF MALFUNCTION CAUSE IS POOR AUDIO VOLUME ADJUSTMENT • Turn the audio unit power on and select radio mode. • Operate the POWER/VOLUME switch and change the audio unit volume. • Is audio output?	Yes	Go to the next step.
2		No	Perform inspection referring to NO SOUND FROM ALL SPEAKERS [ENTIRE AUDIO SYSTEM] (See NO.3 NO SOUND FROM ALL SPEAKERS [ENTIRE AUDIO SYSTEM].)
3	DETERMINE IF MALFUNCTION CAUSE IS CAR-NAVIGATION UNIT • Turn the ignition switch to the ON position and launch the audio unit diagnostic assist function. (See DIAGNOSTIC ASSIST FUNCTION [AUDIO].) • Select diagnostic assist code 16 external device connection information clearing. • Turn the ignition switch to the OFF position. • Turn the ignition switch to the ON position. • Turn the audio unit power on and select NAVI mode. • Operate the route guidance mode. • Is audio output?	Yes	Troubleshooting completed.
3		No	Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)