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:
Inspection
1. INSPECT BRAKE DISC INSIDE DIAMETER
(a) Using a brake drum gauge or equivalent, measure
the inside diameter of the disc.
Standard inside diameter:
190 mm (7.480 in.)
Maximum inside diameter:
191 mm (7.520 in.)
2. INSPECT PARKING BRAKE SHOE LINING THICKNESS
(a) Using a ruler, measur ...
Installation
1. INSTALL SLIDING ROOF HOUSING ASSEMBLY
Install the housing with the 6 nuts.
Install the 4 brackets with the 8 bolts.
Connect the 4 hoses and drive gear connector.
2. ADJUST SLIDING ROOF GLASS SUB-ASSEMBLY
Check for a difference in levels between the sliding
roof (roof glass) a ...
Calibration
1. SELECT COMPASS DISPLAY MODE
The MODE switch allows you to select the Display
or Non-display mode of the compass.
HINT:
In compass display mode, the display indicates
outside temperature/average fuel consumption/
instantaneous fuel consumption/distance to empty
with compass.
2. ...
