Toyota Sienna Service Manual: Poor Sound Quality in All Modes (Low Volume)
INSPECTION PROCEDURE
1 CHECK AUDIO SETTINGS
- Set "BASS", "MID" and "TREB" to the initial values and check that sound is normal.
OK: Malfunction disappears.
2 COMPARE WITH ANOTHER VEHICLE OF SAME MODEL
- Compare with another vehicle of the same model.
- Compare with another vehicle of the same model which does not have trouble to see if there is any difference in the sound quality.
OK: No difference is found
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Screen Flicker or Color Distortion
INSPECTION PROCEDURE
1 CHECK DISPLAY SETTING
Enter the display adjustment screen by pressing the
"DISPLAY" switch.
Reset display settings (contrast, brightness) and check
...
Map Disc cannot be Inserted
INSPECTION PROCEDURE
1 CHECK RADIO AND NAVIGATION ASSEMBLY
Check if a disc is inserted into the MAP disc slot.
Check if "DISC IN" is displayed.
OK:
"DISC IN&quo ...
Other materials:
Using the radio
Radio operation
Select “AM” or “FM” on the audio source selection screen to
begin listening to the radio.
Audio control screen
Pressing the “AUDIO” button displays the audio control screen from
any screens of the selected source.
Audio source selection screen
appears
Pre ...
Adjustment
1. VEHICLE PREPARATION FOR FOG LIGHT AIMING
Prepare the vehicle:
Ensure there is no damage or deformation to the
body around the fog lights.
Fill the fuel tank.
Make sure that the oil is filled to the specified
level.
Make sure that the coolant is fi ...
Radiator
COMPONENTS
...