Poor Sound Quality In All Modes (Low Volume)

NAVIGATION: NAVIGATION SYSTEM (for CrewMax): Poor Sound Quality in All Modes (Low Volume)

Poor Sound Quality in All Modes (Low Volume)

INSPECTION PROCEDURE

PROCEDURE

1. ADJUST SOUND QUALITY
(a) Operate the navigation receiver to adjust the sound quality.
OK:
Sound quality returns to normal.
NG -- COMPARE VEHICLE WITH ANOTHER VEHICLE OF SAME MODEL
OK -- SYSTEM IS OK (BAD SOUND QUALITY)
2. COMPARE VEHICLE WITH ANOTHER VEHICLE OF SAME MODEL
(a) Compare the vehicle with another vehicle that has a normally functioning audio system. Check if there is any difference in the problem.
OK:
No difference is found.
NG -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK -- SYSTEM IS OK (BAD SOUND QUALITY)