PROCEDURE
(a) Set treble, middle and bass to the initial values and check that the sound is normal. OK: Malfunction disappears. HINT: Sound quality adjustment measures vary according to the type of amplifier.
(a) Compare with another vehicle of the same model which does not have trouble to see if there is any difference in the sound quality. OK: No difference is found.
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Toyota Tundra Service Manual > Navigation System: Lost Communication with Meter (B1324)
DESCRIPTION This DTC is stored when a communication error occurs between the navigation receiver assembly and combination meter assembly. DTC Code DTC Detection Condition Trouble Area B1324 After the navigation receiver assembly receives a registration information signal, which is sent by the combin ...
