Mute Signal Circuit between Stereo Component Amplifier and Telematics Transceiver [06/2020 - 10/2022]: Description

This DCM (telephone transceiver assembly) sends a mute signal to the stereo component amplifier assembly. The stereo component amplifier assembly controls the volume according to the mute signal from the DCM (telephone transceiver assembly).

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 assembly is functioning normally, no sound or only an extremely faint sound can be heard.