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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:

Terminals of ecu
1. Terminal of ECU (*1): Models with dynamic laser cruise control (*2): 2WD model 2. Terminal Inspection (a) Disconnect the connector and measure the voltage or resistance on the wire harness side. HINT: Voltage cannot be measured with the connector connected to the skid control ECU ...

Passenger Airbag ON/OFF Indicator Circuit Malfunction
DTC B1152/28 Passenger Airbag ON/OFF Indicator Circuit Malfunction DESCRIPTION The passenger airbag ON/OFF indicator circuit consists of the center airbag sensor assembly and passenger airbag ON/OFF indicator. This circuit indicates the operation condition of the front passenger airbag, ...

Message Settings
Display the “Phone/Message Settings” screen. Select “Messaging Settings”. Select the desired item to be set. Set automatic message transfer on/off. Set automatic message readout on/off. Set the SMS/MMS notification popup on/off. Set the e-mail notification pop ...

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