Component Description

ACM 

The ACM can be operated with the ignition in RUN or ACC. The accessory delay feature allows the audio system to be operated for a preset period of time after the ignition is turned off and a front door has not been opened. The ACM requires PMI when it is replaced.

Antenna 

The roof-mounted antenna has an integrated antenna module that is powered by the ACM to improve AM/FM reception. If the vehicle is equipped with satellite radio, the satellite antenna is integrated into the roof-mounted antenna.

APIM 

The APIM consists of 2 internal modules: the CIP and the VIP. The modules are not replaceable individually, but can be flashed independently, if required.

The CIP interfaces with all of the inputs to the APIM. It contains an analog-to-digital-to analog converter, as well as the Bluetooth chipset. Any application upgrades that are available to the consumer are loaded directly to the CIP through the USB port.

The VIP provides an interface between the CIP and the vehicle. Its main functions are controlling the APIM power management and translating both inbound and outbound signals. In addition, the VIP queries the modules on the network to retrieve any DTCs when a vehicle health report is requested.

Audio Input Jack 

The audio input jack allows for a portable MP3 player to be connected to the vehicle audio system utilizing a 1/8-inch (3mm) audio jack.

FCDIM 

The FCDIM is a stand-alone module that displays infotainment system information. Information from the audio system and the climate control system are shown on the FCDIM display screen. The FCDIM requires PMI when it is replaced.

FCIM 

The FCIM is one of the customer interfaces to the audio system. The FCIM is also the customer interface with the HVAC module. It is separate from the ACM.

GPSM 

The GPSM provides vehicle location for real-time traffic reports and re-routing, and for identifying vehicle location in the event of a collision.

Microphone 

The microphone receives the voice command and sends a signal to the APIM. The microphone is also used to detect outgoing audio during a phone call and voice commands for the SYNC ® system.

Steering Wheel Switches 

The RH steering wheel switch consists of a series of resistors. Each steering wheel switch function corresponds with a specific resistance value within the switch. The SCCM sends out a 5 volt reference voltage to the RH steering wheel switch on the input circuits and monitors the voltage drop when a button is pressed. The voltage drop varies depending upon the resistance of the specific button pressed, providing indication to the SCCM which switch is pressed.

USB Port 

The USB port is connected to the APIM through the USB cable. The USB port can be used to play audio files or upload software from mass storage devices, or for connecting a media device.