Inspection Procedure 4: When the speech switch is pressed, the voice guide is not output. < Vehicles with MMCS >: Notes
WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Before replacing the hands free module or multivision display, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.