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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:

Removal
1. Remove no. 2 Air cleaner inlet (see page em- 28) 2. Remove air cleaner cap sub-assembly (a) Disconnect the 3 vacuum hoses. (b) Loosen the bolt, disconnect the 2 connectors, and remove the 2 vacuum hoses. (c) Remove the 2 bolts, air cleaner cap sub-assembly, and air cleaner filt ...

Terminals of ECU
1. JUNCTION CONNECTOR Junction connector with VSC HINT: *1: with Dynamic laser cruise control without VSC CAN junction connector (with VSC) with VSC The connection diagram of the components which are connected to the CAN junction connector. 2. DLC3 ...

Rear Occupant Classification Sensor LH Circuit Malfunction
DTC B1782 Rear Occupant Classification Sensor LH Circuit Malfunction DESCRIPTION The rear occupant classification sensor LH circuit consists of the occupant classification ECU and the rear occupant classification sensor LH. DTC B1782 is recorded when a malfunction is detected in the rear oc ...

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