Toyota Tundra Service 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.

END (AUDIO SETTINGS ARE DEFECTIVE)

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 (AUDIO SETTINGS ARE DEFECTIVE)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Toyota Tundra Service Manual > Navigation System: D-Seat ECU Vehicle Information Reading/Writing Process Malfunction (B15F8)
DESCRIPTION This DTC is stored when items controlled by the front power seat switch LH cannot be customized via the navigation system vehicle customization screen. HINT: The front power seat switch LH controls the front power seat control system (w/ Memory) related items that are customizable via th ...

Toyota Tundra Owners Manual