Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Poor Sound Quality in All Modes (Low Volume)

PROCEDURE

1.

CHECK AUDIO SETTINGS

(a) Set treble, middle and bass to the initial values and check that the sound is normal.

OK:

The sound returns to normal.

HINT:

Sound quality adjustment measures vary according to the type of amplifier.

OK

END

NG

2.

COMPARE WITH ANOTHER VEHICLE OF SAME MODEL

(a) Compare with another vehicle of the same model which is not malfunctioning to see if there is any difference in the sound quality.

OK:

No difference is found.

OK

END

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Parts Location

    Portable Player cannot be Connected Manually/Automatically

    See More:

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    TERMINALS OF ECM HINT: The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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