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 > Air Conditioning System(for Automatic Air Conditioning System): Multiplex Communication Circuit (B1499/99)
DESCRIPTION This DTC outputs when CAN communication error is occurred. DTC Code DTC Detection Condition Trouble Area B1499/99 Open in CAN communication circuit CAN communication system PROCEDURE 1. CHECK FOR DTC (a) Clear the DTC (see page ). (b) Check for the DTC (see page ). Result Result Proceed ...

Toyota Tundra Owners Manual