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:
Disc cannot be Played/ No Playable Files/ Copyright Protection Error
DTC 44-7D Disc cannot be Played
DTC 44-7E No Playable Files
DTC 44-7F Copyright Protection Error
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
44-7D
An incompatible MP3/WMA file is used.
Although the file has an extension of " ...
Air-fuel ratio (a/f) and heated oxygen (ho2)
sensor heater monitors (front a/f and rear ho2 sensor
type)
(a) Preconditions
The monitor will not run unless:
The MIL is OFF.
(b) Drive Pattern
(1) Connect an intelligent tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Clear the DTCs.
(4) Start the engine.
(5) Allow the engine to idle for 10 minutes or more.
...
Mass or Volume Air Flow Circuit Range / Performance
Problem
DTC P0101 Mass or Volume Air Flow Circuit Range / Performance
Problem
DESCRIPTION
Refer to DTC P0100
DTC No.
DTC Detection Condition
Trouble Area
P0101
High voltage:
Conditions (a), (b) and (c) continue for more than
10 seconds (2 trip de ...
