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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:

Headlight dimmer switch
COMPONENTS REMOVAL 1. REMOVE STEERING COLUMN LOWER COVER 2. REMOVE STEERING COLUMN UPPER COVER 3. REMOVE HEADLIGHT DIMMER SWITCH ASSEMBLY  Disconnect the connector.  Release the claw fitting and remove the headlight dimmer switch assembly. INSPECTION 1. HEADLIGHT DI ...

Insufficient Coolant Temperature for Closed Loop Fuel Control
DTC P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control DESCRIPTION Refer to DTC P0115 DTC No. DTC Detection Condition Trouble Area P0125 Engine coolant temperature (ECT) does not reach closed-loop enabling temperature for 20 minutes (t ...

Oxygen Sensor Circuit Malfunction/ Oxygen Sensor Circuit Low Voltage/ Oxygen Sensor Circuit High Voltage
DTC P0136 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2) DTC P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2) DTC P0138 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2) DTC P0156 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2) DTC P0157 Oxygen Sensor Circuit Low Voltage ...

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