Inspection Procedure 9

INSPECTION PROCEDURE 9: The navigation sound is not output or the noise enters in the sound.

CAUTION: Before replacing the navigation unit, ensure that the power supply circuit and the ground circuit are normal. (Check that the voltage is 10 V or more.)

TROUBLESHOOTING HINTS
- The DIN cable may be defective
- The multi-center display may be defective
- The navigation unit may be defective

DIAGNOSIS

STEP 1. Check if the navigation system sound volume setting is set to MIN.

Q: Is the navigation system sound volume setting set to MIN?

YES : Change the navigation sound volume setting.

NO : Go to Step 2.

STEP 2. Check that the audio sound is output from the front left speaker.

Q: Is the audio sound output from the front left speaker?

YES : Go to Step 3.

NO : INSPECTION PROCEDURE 19: Perform "Only the front left speaker does not sound (including the audio sound)". Inspection Procedure 19

STEP 3. Check the DIN cable connector shape and engagement between the navigation unit and the multi-center display.

Q: Is there any abnormality to the DIN cable connector shape and engagement between the navigation unit and the multi-center display?

YES : Go to Step 4.

NO : Replace the DIN cable, the navigation unit, or the multi-center display.

STEP 4. DIN cable inspection between the navigation unit and the multi-center display

Q: Is the DIN cable between the navigation unit and the multi-center display normal?

YES : Go to Step 5.

NO : Replace the DIN cable.

STEP 5. Temporarily replace the navigation unit, and check that the guidance sound is normal.

Q: When the navigation unit is temporarily replaced, is the guidance sound normal?

YES : Replace the navigation unit. Check that the guidance sound is normal.

NO : Replace the multi-center display.