Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1503 (INFORMATION SYSTEM AND ENTERTAINMENT SYSTEM)DIAGNOSIS AND TESTINGINFORMATION AND ENTERTAINMENT SYSTEMPRINCIPLES OF OPERATIONAUDIO SYSTEM
2009 Mercury Milan Premier, 3.0 1, AWD
Audio System
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Audio System
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
AUDIO SYSTEM FUNCTION CHART
| Message | Transmitting Module | Receiving Module(s) | Audio System Function |
|---|---|---|---|
| Accelerometer and Yaw Sensor Data | Instrument Panel Cluster (IPC) | GPSM | Provides vehicle yaw rate to the GPSM for use in vehicle tracking. |
| Accessory Delay Status | SJB | ACM APIM FCIM FDIM |
When active, this signal allows the audio component to be operated after the vehicle is shut off. |
| Average Fuel Economy Data | IPC | ACM | Provides average fuel economy data to the ACM . |
| Belt-Minder® Status | IPC | ACM | When this signal is active, the speaker output is reduced to allow the Belt-Minder® tone to be more easily heard. This message only applies to vehicles with MyKey that have this feature currently enabled. |
| Climate Control Data (Hybrid only) | HVAC module | ACM | Provides the outside air temperature to the ACM . |
| Compass Display Status | IPC | PDIM | Indicates the compass heading or mode (calibration, zone). This message only applies to vehicles without navigation. |
| eCall Notification | Restraints Control Module (RCM) | APIM | Provides the eCall status to the APIM . This message is also used to confirm that the APIM and RCM are both configured for the eCall feature. |
| eCall Status | APIM | RCM | Provides the eCall status to the RCM . This message is also used to confirm that the APIM and RCM are both configured for the eCall feature. |
| English/Metric Mode | IPC | ACM | Indicates whether English or metric units is currently selected. |
| FCIM Button Press Data | FCIM | ACM APIM Audio DSP module IPC |
Indicates when a button is pressed on the FCIM so the audio system can make the desired setting change. |
| Fuel Level (Instant) | IPC | APIM | Provides the instant fuel level to the APIM . |
| Historical Fuel Economy (Hybrid only) | IPC | ACM | Provides the historical fuel economy data to the ACM for display on the PDIM . This message only applies to vehicles with navigation. |
| HVAC Button Status (from ACM ) | ACM | HVAC module | Indicates when a climate control setting is changed using the FDIM touchscreen (which is hardwired to the ACM ) so the HVAC module can make the desired setting changes. This message only applies to vehicles with navigation. |
| HVAC Button Status (from FCIM ) | FCIM | HVAC module | Indicates when a climate control button is pressed on the FCIM so the HVAC module can make the desired setting change. |
| HVAC Indicator Status (to ACM ) | HVAC module | ACM | Indicates the mode of the HVAC module so the ACM can send the correct display information to the PDIM . This message only applies to vehicles with navigation. |
| HVAC Indicator Status (to FCIM ) | HVAC module | FCIM | Indicates the mode of the HVAC module so the FCIM can illuminate the appropriate indicator on the bezel face. |
| HVAC Module Display Data | HVAC module | ACM
(with navigation) FDIM (without navigation) |
Indicates certain climate control settings such as temperature, fan speed, air distribution, and outside air temperature. |
| HVAC Voice Request | ACM | HVAC module | Provides climate control setting changes that are initiated through the voice recognition system. This message only applies to vehicles with navigation. |
| Ignition Switch Position | SJB | ACM APIM Audio DSP module FCIM FDIM GPSM |
Indicates the ignition position to the audio system modules in order to control power management. |
| Instrument Illumination Level | SJB | ACM FCIM FDIM |
Controls the backlight intensity, based on the position of the dimmer switch. |
| Navigation Rolling Wheel Count | IPC | ACM GPSM |
Used by the ACM
to more accurately track vehicle position when the GPS
signal is temporarily unavailable. Used by the GPSM for vehicle tracking if the vehicle speed signal is lost. |
| Odometer Rolling Count | PCM | APIM | Provides the odometer reading to the APIM in order to initiate maintenance interval notifications. |
| Park Brake Status | SJB | ACM | Provides the park brake status to the ACM . |
| Parking Aid Sounder Volume Cutback Request | Parking Aid Module (PAM) | ACM | When this signal is active, the speaker output is reduced to allow the parking aid tone to be more easily heard. |
| Power Flow Status (Hybrid only) | IPC | ACM | Provides the approximate power flow data to the ACM for display on the PDIM . This message only applies to vehicles with navigation. |
| TPMS Status (Hybrid only) | SJB | APIM | Provides the current tire pressure and TPMS warning indicator status to the APIM . |
| Transmission Selector (PRNDL) Status | IPC | ACM GPSM |
For the navigation system, this signal is used for more accurate navigation tracking. For the parking aid system, this signal is used by the ACM to determine if it should enable the speaker mute feature when a parking aid tone sounds. For vehicles with a rear view camera, this signal is used by the ACM to determine if it should allow the video feed from the rear view camera to be shown on the PDIM . For vehicles with the SYNC system but not navigation, this signal is used by the GPSM for more accurate vehicle tracking. |
| Vehicle Speed | IPC | ACM Audio DSP module GPSM |
Used by the ACM
(or audio DSP
module) for the speed-compensated volume function. Used by the GPSM for vehicle tracking. |
| Vehicle Identification Number (VIN) Information | IPC | ACM APIM |
Provides the VIN to verify the correct modules are installed. |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.