Toyota Avalon 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.

END

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.

END

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Toyota Avalon Service & Repair Manual > Motor Generator Control System: DC/DC Converter Current Sensor Circuit Current Out of Range (P31531D)
DTC SUMMARY MALFUNCTION DESCRIPTION This DTC is stored if the value of the reactor current sensor fluctuates excessively. The cause of this malfunction may be one of the following: Area Main Malfunction Description Hybrid vehicle transaxle assembly Open or short circuit in the motor or generator coi ...

Toyota Avalon Owners Manual