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 > Horn: High Pitched Horn
Components COMPONENTS ILLUSTRATION *A Type A *B Type B *C Type C - - *1 HIGH PITCHED HORN ASSEMBLY *2 RADIATOR GRILLE SUB-ASSEMBLY N*m (kgf*cm, ft.*lbf): Specified torque - - Inspection INSPECTION PROCEDURE 1. INSPECT HIGH PITCHED HORN ASSEMBLY (a) Apply battery voltage and check operation of the hi ...