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 NO. 1 SEAT CUSHION FRAME SUBASSEMBLY
Install the seat cushion frame with the bolt.
Torque: 20.6 N*m (210 kgf*cm, 15 ft.*lbf)
2. INSTALL RECLINING CONTROL LINK SUBASSEMBLY
Install the reclining control link with the E-ring.
Install the nut.
3. INSTALL RE ...
Removal
1. REMOVE FRONT EXHAUST PIPE ASSEMBLY
HINT:
(See page EX-8)
2. REMOVE PROPELLER WITH CENTER BEARING
SHAFT ASSEMBLY
HINT:
(See page PR-3)
3. REMOVE REAR DIFFERENTIAL FILLER PLUG
(a) Using a hexagon wrench (10 mm), remove the filler
plug and gasket.
4. REMOVE REAR DIFFERENTIAL DRAIN PLUG
(a ...
Disassembly
1. REMOVE NO. 1 HEADLIGHT BULB (HALOGEN HEADLIGHT)
Turn in the direction indicated by the arrow and
remove the No. 1 headlight bulb.
2. REMOVE DISCHARGE HEADLIGHT BULB (DISCHARGE HEADLIGHT)
Turn in the direction indicated by the arrow and
disconnect the socket.
...
