Audio Control Module (ACM)

The Audio Control Module (ACM) can be operated with the key in RUN or ACC. The accessory delay feature allows the audio system to be operated for a preset period of time after the key is turned off and a front door has not been opened. The ACM  sends AC voltage audio signals to the speakers or to the amplifiers, depending on vehicle configuration. The ACM  can produce its own DTCs, which can be communicated to the scan tool through the Medium Speed Controller Area Network (MS-CAN).