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. 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 DSP Module
The audio DSP module enhances the input audio signal sound quality from the ACM. The audio DSP module requires PMI when it is replaced.
FCIM
The FCIM is one of the customer interfaces to the audio system and the HVAC module. It is separate from the ACM.
FDIM
The FDIM provides for customer interaction through the touchscreen display. The FDIM plugs directly into the APIM, and therefore does not communicate directly on any network and no external circuits are connected.
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.
For vehicles with navigation, the GPSM acts as the antenna for the navigation system.
The vehicle location information is broadcast to the APIM.
Media Hub
The media hub allows for various audio and video devices to be played through the vehicle speakers and viewed in the FDIM display.
The media hub receives inputs from:
- 2 USB ports
- 1 Secure Digital (SD) card slot
- 1 set of component RCA jacks
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 command 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.