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 > Sfi System: Engine Coolant Temperature Circuit Range / Performance Problem (P0116)
DESCRIPTION Refer to DTC P0115 (See page ). DTC No. DTC Detection Condition Trouble Area P0116 When either of following conditions met (2 trip detection logic): When cold engine started and engine warmed up, Engine Coolant Temperature (ECT) sensor value does not change. After warmed up engine stoppe ...

Toyota Tundra Owners Manual