415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD	2014 Fiesta
Description and Operation	Procedure revision date: 08/1/2013

Information and Entertainment System - System Operation and Component Description

System Operation

System Diagram

Network Message Chart

A missing network message is indicated by a U-code DTC and can be the result of intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, vehicle repair procedures such as module reprogramming can set these Diagnostic Trouble Codes (DTCs). When a missing message DTC (U-code) sets, it is important to look for symptoms present in the audio system and throughout the vehicle, and to review the complete message list to determine which other modules rely on the same message.
Refer to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
See CAN Multiplex Messages.

When the other modules have been identified, run the self-test for those modules. If the same message is missing from those modules, the identical, or similar lost communication Diagnostic Trouble Codes (DTCs) may be set in those modules. Confirmation of missing messages common to multiple modules can indicate that the originating module is the source of the concern, or that the communication network may be at fault.

It is very important to understand the following:

Where the input originates
All of the information necessary for a feature to operate
Which module(s) receive(s) the input or command message
Which module controls the output of the feature
If the module that receives the input controls the output of the feature, or whether it outputs a message over the CAN to another module.

Module Network Input Messages - ACM

Broadcast Message	Originating Module	Message Purpose
Audio button state	FCDIM	Used to indicate when a button is pressed on the FCIM so the audio system can make the desired setting change.
Audio volume request	FCDIM	Used to display the ACM volume on the FCDIM .
Chime request	IPC	Used to mute the audio system so a chime from the IPC can be more easily heard.
Day/night status	IPC	Used to adjust the AM radio reception sensitivity.
FCDIM configuration	FCDIM	Used to verify that the correct configuration and modules are installed.
FCIM set volume	FCIM	Used to set the ACM volume from the FCIM buttons.
Ignition status	IPC	Used to indicate the ignition state (OFF, ACCESSORY, RUN, and START) required for ACM operating modes and fault reporting.
Transport mode	IPC	Used to disable the functionality of the ACM until taken out of transport mode.
Vehicle speed	PCM	Used for the speed compensated volume function.

Module Network Input Messages - FCDIM

Broadcast Message	Originating Module	Message Purpose
ACM configuration	ACM	Used to verify that the correct configuration and modules are installed.
Audio source status	ACM	Used to display the selected audio source on the FCDIM .
Audio volume status	ACM	Used to display audio volume status on the FCDIM .
CD load/eject	ACM	Used to display the loaded or ejected CD status on the FCDIM .
Date and time	IPC	Used to display the current date and time on the FCDIM .
FCIM button state	FCIM	Used to indicate when a button is pressed on the FCIM so the audio system can make the desired setting change.
Ignition status	IPC	Used to indicate the ignition state (OFF, ACCESSORY, RUN, and START) required for FCDIM operating modes and fault reporting.
Illumination dimming level	BCM	Used to control the backlight intensity of the FCDIM based on the dimmer switch input.
Media center display units	IPC	Used to display trip, time, and temperature information in the preferred measurement units.
Transport mode	IPC	Used to disable the functionality of the FCDIM until taken out of transport mode.
Vehicle speed	PCM	Used to determine the appropriate temperature display update rate.

Module Network Input Messages - IPC

Broadcast Message	Originating Module	Message Purpose
Date and time adjustment request	FCDIM	Used to adjust the date and time information stored in the IPC from the FCIM buttons.
FCDIM display selections	FCDIM	Used to request trip, time, and temperature information in the preferred measurement units.
Vehicle mode settings request	FCDIM	Used to request vehicle settings stored in the IPC from the FCIM buttons.
Vehicle speed display units	FCDIM	Used to display the odometer readout in the preferred measurement units.

AM / FM Radio

The AM / FM roof-mounted antenna receives analog radio waves and sends them through the AM / FM antenna coaxial cable to the ACM . The radio waves are converted into fluctuating AC voltage and sent as left and right analog audio signals to the speakers.

Audio Extended Play

This feature allows the audio system to operate with the ignition OFF, regardless of door latch position. When the power button on the FCIM is pressed, audio system functionality is enabled and remains active for a period of 60 minutes, depending on sufficient battery voltage. To turn the audio system off, the power button on the FCIM is pressed.

Audio Input Jack Mode

When a portable audio device, such as an iPod® with its available cable, is connected to the vehicle audio system through the audio input jack, audio from the device can be played through the vehicle speakers. Only the volume can be controlled by the vehicle audio controls. All other functions such as seek, fast forward, pause, etc. must be carried out on the device itself.

No metadata (information such as artist, album title, song title, and genre) is transferred when a device is connected to the audio input jack.

Speed Compensated Volume

The ACM adjusts the audio system volume based on the VSS signal to compensate for wind and road noise.

Component Description

ACM

The ACM can be operated with the ignition in RUN, ACC, or OFF.

The ACM receives radio waves containing audio from the antenna coaxial cable and converts them into fluctuating AC voltage. The ACM processes all inputs, and sends stereo or analog audio signals to the speakers as fluctuating AC voltage.

The ACM requires PMI when it is replaced.

Antenna

The AM / FM radio uses the fixed-mast roof-mounted antenna to receive radio waves containing audio. The radio waves are sent through the AM / FM antenna coaxial cable to the ACM , where they are amplified.

Audio Input Jack

The audio input jack can be used to play audio files from an audio device connected through a 1/8-inch (3 mm) audio jack.

Audio signals are sent from the audio input jack to the ACM .

There are no power or ground circuits to the audio input jack.

FCDIM

The FCDIM can be operated with the ignition in RUN, ACC, or OFF.

The FCDIM displays infotainment data received from various modules over the CAN . If the FCDIM loses the signal from any of these modules, only those specific displays will be inoperative. For more information,
Refer to: Information and Entertainment System - System Operation and Component Description (415-00A Information and Entertainment System - General Information - Vehicles With: AM/FM/CD, Description and Operation).
See Module Network Input Messages - FCDIM .

FCIM

The FCIM can be operated with the ignition in RUN, ACC, or OFF.

The FCIM audio system buttons provide one of the methods with which the customer interacts with the infotainment system. It transfers button press data over a dedicated LIN to the FCDIM .

The FCIM is separate from the ACM .