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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:

Programming the HomeLink® (for U.S.A. owners)
The HomeLink® compatible transceiver in your vehicle has 3 buttons which can be programmed to operate 3 different devices. Refer to the programming method below appropriate for the device. Indicator light Buttons Programming the HomeLink® Point the remote control for the d ...

Reassembly
1. INSTALL LIGHT CONTROL ECU (DISCHARGE HEADLIGHT)  Install a new headlight leveling motor base packing.  Install the headlight leveling motor assembly as shown in the illustration. Connect the connector with the claw Install the light control ECU with the 2 ...

Installation
1. INSTALL SPIRAL CABLE  Check that the front wheels are facing straight ahead.  Set the turn signal switch to the neutral position. NOTICE: If it is not in the neutral position, the pin of the turn signal switch may snap. Install the spiral cable. NOTICE: When ...

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