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:
Reassembly
1. INSTALL BACK DOOR STOPPER LOWER
Install the 2 stoppers with the 4 bolts.
Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf)
2. INSTALL BACK DOOR BASE STOPPER BRACKET
Install the 2 brackets with the 4 bolts.
Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf)
3. INSTALL BACK DOOR WITH MOTOR LOCK ASSEMB ...
Stowing the spare tire
Lay down the tire with the outer
side (valve stem) facing up, and
install the holding bracket.
Turn the jack handle clockwise
to raise the tire until the tire is in
the correct position as the jack
handle skips.
Stow the tools.
The compact spare tire
The compact s ...
Diagnosis system
1. CHECK DLC3
The ECU uses the ISO 15765-4 for communication
protocol. The terminal arrangement of the DLC3
complies with SAE J1962 and matches the ISO
15765-4 format.
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
opera ...
