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Toyota Sienna Service Manual: Poor Sound Quality in All Modes (Low Volume)

Toyota Sienna Service Manual / Navigation / Navigation system / Diagnostic trouble code chart / Poor Sound Quality in All Modes (Low Volume)

INSPECTION PROCEDURE

1 CHECK AUDIO SETTINGS

  1. 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

  1. Compare with another vehicle of the same model.
  1. 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:

DTC check / clear
1. DTC CHECK HINT: When DTC B1150/23 is detected as a result of troubleshooting for "Airbag System", perform troubleshooting for the Occupant Classification System.  Check the DTCs.  Connect the intelligent tester to the DLC3.  Turn the ignition switch to t ...

Customer problem analysis
HINT: In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem an ...

Trailer Tongue Weight
A recommended tongue weight varies in accordance with the types of trailers or towing as described below. To ensure the recommended values shown below, the trailer must be loaded by referring to the following instructions. Tongue Weight The gross trailer weight should be distribute ...

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