PROCEDURE
(a) Set treble, middle and bass to the initial values and check that the sound is normal. OK: The sound returns to normal.
(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.
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Toyota Tundra Service Manual > Lin Communication System: Terminals Of Ecu
TERMINALS OF ECU *A Main Body ECU (Multiplex Network Body ECU) with 1 connector - - *1 Main Body ECU (Multiplex Network Body ECU) - - *A Main Body ECU (Multiplex Network Body ECU) with 3 connectors - - *1 Main Body ECU (Multiplex Network Body ECU) - - 1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND ...