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: Manifold Absolute Pressure / Barometric Pressure Circuit Low Input (P0107,P0108)
DESCRIPTION By a built-in sensor unit, the manifold absolute pressure sensor detects the intake manifold pressure as a voltage. DTC No. DTC Detection Condition Trouble Area P0107 The manifold absolute pressure sensor voltage is below 0.5 V for 0.5 seconds. (1 trip detection logic) Open or short in m ...

Toyota Tundra Owners Manual