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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:

Clearance warning ECU
COMPONENTS REMOVAL 1. REMOVE FRONT DOOR SCUFF PLATE LH 2. REMOVE COWL SIDE TRIM BOARD LH 3. REMOVE INSTRUMENT PANEL FINISH PANEL SUBASSEMBLY LOWER LH 4. REMOVE NO. 1 INSTRUMENT PANEL SAFETY PAD INSERT SUB-ASSEMBLY 5. REMOVE CLEARANCE WARNING ECU  Disconnect each connector. &nb ...

Inspection
1. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH (w/o Memory)  Disconnect the mirror connector.  Check operation of the outer mirror. Apply battery voltage and inspect operation of the mirror face, as shown in the table and illustration. Standard (LH) If the result i ...

Ambient temperature sensor circuit
DTC B1412/12 Ambient Temperature Sensor Circuit DESCRIPTION The ambient temperature sensor is installed in front of the condenser to detect the ambient temperature which is used to control the air conditioner "AUTO" mode. This sensor is connected to the A/C amplifier and detects fl ...

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