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:
Removal
1. DRAIN AUTOMATIC TRANSAXLE FLUID (See page
AX-131)
2. REMOVE NO. 1 TRANSFER CASE PLUG (See page
TF-8)
3. REMOVE TRANSFER DRAIN PLUG
(a) Remove the transfer drain plug, gasket and bleed
the drain transfer oil.
4. REMOVE FRONT WHEEL
5. REMOVE FRONT DRIVE SHAFT ASSEMBLY RH
HINT:
(See page D ...
Rear Room Temperature Sensor Circuit
DESCRIPTION
This sensor detects the rear cabin temperature that is used as the basis for
temperature control and
sends a signal to the A/C amplifier.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ign ...
Installation
1. INSTALL SLIDE DOOR ROLLER ASSEMBLY UPPER
Apply MP grease to the rotating areas of the roller.
Install the roller with the 2 bolts.
Torque: 13 N*m (130 kgf*cm, 10 ft.*lbf)
2. INSTALL SLIDE DOOR HINGE ASSEMBLY CENTER LH
Apply MP grease to the rotating areas of the hinge.
In ...
