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 > Vehicle Stability Control System: Stop Light Control Relay Malfunction (C1380)
DESCRIPTION When the skid control ECU (brake actuator assembly) applies the brakes after receiving a brake request signal from the trailer sway control, the skid control ECU (brake actuator assembly) operates the stop light switch assembly to illuminate the stop lights. DTC No. Detection Item DTC De ...