Sienna FWD V6-3.3L (3MZ-FE) (2006)
Step 3
INSPECTION PROCEDURE
Mute Signal Circuit Between Radio and Navigation Assembly and Stereo Component Amplifier
Mute Signal Circuit between Radio and Navigation Assembly and Stereo Component Amplifier
DESCRIPTION
This circuit sends a signal to the stereo component amplifier to mute noise. Because of that, the noise produced by changing the sound source ceases.
If there is an open in the circuit, noise can be heard from the speakers when changing the sound source. If there is a short in the circuit, even though the
stereo component amplifier is normal, no sound, or only an extremely small sound, can be produced.