section 415-00 information and entertainment...

SECTION 415-00 Information and Entertainment Systems

CONTENTS PAGE

DIAGNOSIS AND TESTINGInformation and Entertainment System .............................................................................................................................. 415-00-2

Principles of Operation ................................................................................................................................................. 415-00-2Inspection and Verification ........................................................................................................................................... 415-00-6DTC Charts ................................................................................................................................................................... 415-00-7Symptom Chart — General Audio System ................................................................................................................. 415-00-11Symptom Chart — Sound Quality .............................................................................................................................. 415-00-13Symptom Chart — Satellite Radio .............................................................................................................................. 415-00-14Symptom Chart — Navigation .................................................................................................................................... 415-00-14Symptom Chart — SYNC System .............................................................................................................................. 415-00-14Pinpoint Tests ............................................................................................................................................................. 415-00-15

415-00-i Information and Entertainment Systems 415-00-i

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DIAGNOSIS AND TESTINGInformation and Entertainment SystemSpecial Tool(s)

Fluke 77-IV Digital MultimeterFLU77-4 or equivalent

Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) softwarewith appropriate hardware, or equivalent scan tool

Flex Probe Kit105-R025D or equivalent

Multi-Media Interface Tester105-00120

Universal Serial Bus (USB) Male-A To Male-A CableCCMUSB2-AM-AM-10

Principles of Operation

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

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 apreset period of time after the key is turned off and a door has not been opened. The ACM sends AC voltage audio signals to the speakers or to theamplifiers, depending on vehicle configuration. The ACM can produce its own DTCs, which can be communicated to the scan tool through the MediumSpeed Controller Area Network (MS-CAN).

Front Controls Interface Module (FCIM)The Front Controls Interface Module (FCIM) acts as a customer interface with the audio system and the climate control system. When a switch is pressed, amessage is broadcast over the MS-CAN. When a climate control switch is pressed, the HVAC module sends a message back to the FCIM to illuminate thecorrect switches to indicate the status of the climate control.

415-00-2 Information and Entertainment Systems 415-00-2

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Front Display Interface Module (FDIM)For vehicles without navigation, the Front Display Interface Module (FDIM) is a stand-alone module. It receives messages for all of its displays, whichinclude:

• Audio information

• Climate control fan speed and temperature setting

• Outside air temperature

• Compass heading

For vehicles with navigation, the FDIM is hardwired to the ACM. When the touchscreen is pressed, a signal is sent to the ACM, which acts on the signaleither by changing the audio setting or by broadcasting a message via the MS-CAN to the module controlling the function that was selected. The audiosystem, navigation, and climate control video feed to the FDIM is provided by the ACM. If equipped with a rear view camera, the video feed for the camerais provided directly by the rear view camera.

AM/FM AntennaThe AM/FM antenna is a fixed mast antenna mounted on the exterior of the vehicle. The antenna receives both AM and FM radio waves. The audio signalsare then sent to the ACM through the antenna cables.

Satellite Radio AntennaThe satellite radio antenna receives satellite radio signals. The signals are sent to the ACM through the satellite radio antenna cables. If equipped with thenavigation system, an antenna splitter is used to provide separate satellite radio and Global Positioning System (GPS) inputs to the ACM.

Navigation SystemThe vehicle navigation system guides the user to a pre-entered destination. No navigation map DVD is needed, as the map guidance information is stored inthe ACM hard-drive. The ACM calculates route information based on GPS data. The ACM also uses vehicle speed and transmission gear selected signalsreceived through the MS-CAN to detect vehicle speed and direction, resulting in more accurate navigation tracking.

The navigation display is shown on the FDIM. Either the FDIM touchscreen or the buttons on the FCIM can be used to interact with the navigation system.

The compass heading is derived from the GPS antenna signal. There are no serviceable parts for the compass.

A voice recognition system allows the user to interface with the system without using the touchscreen. A microphone located in the auto-dimming interiormirror provides the voice recognition input. The microphone is shared with the SYNC system.

SYNC SystemThe SYNC system allows interaction with several types of customer devices, including mobile phones and media devices. The APIM contains an on-boardBluetooth chipset which enables certain wireless devices to interact with the system.

The APIM consists of 2 internal modules: the Consumer Interface Processor (CIP) and the Vehicle Interface Processor (VIP). The modules are notreplaceable individually, but can be flashed independently, if required.

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

The VIP provides an interface between the CIP and the vehicle. The main functions of the VIP are controlling the APIM power management and translatingboth inbound and outbound signals over the CAN.

The APIM can receive inputs from the following audio sources:

• USB port

• Audio input jack

• Bluetooth

The USB port can be used for connecting a media device (such as an iPod®) with the device's available cable, or for directly plugging in a portable massstorage device (such as a "thumb drive"). When playing media files stored on a mass storage device, the SYNC system only plays files that do not haveDigital Rights Management (DRM) protection. The USB port can also be used for uploading vehicle application upgrades.

The USB port is powered by the APIM, so no external power source is needed to power a device plugged into the USB port if the device supports thisfeature.

The audio input jack can be used for connecting a media device (such as an iPod®) utilizing a 1/8-inch audio jack. When a device is connected through theaudio input jack, only the speaker volume can be controlled by the ACM. All other functions (such as seek, fast forward, pause, etc.) must be carried out onthe device itself.

The Bluetooth interface can accommodate both Bluetooth-enabled mobile phones and Bluetooth-enabled media devices. Any Bluetooth device used with theSYNC system must first be paired with the system before it is operational.

415-00-3 Information and Entertainment Systems 415-00-3DIAGNOSIS AND TESTING (Continued)

2011 Mustang, 2/2011

Bluetooth is a secure, short-range radio frequency that allows devices to communicate wirelessly through radio waves. The operating range of a Bluetoothsignal is a maximum of 9.75 m (32 ft).

Only one Bluetooth phone and one Bluetooth media device can be connected to the system at any one time. If an additional device of either type is pairedwith the system and made active, the APIM will disconnect any active connection and establish a connection with the new device.

It is important to understand that not all mobile phones will have the same level of features when interacting with the SYNC system. For a list of compatiblephones,refer to the SyncMyRide website.

In addition to audio information, metadata may also be sent to the APIM from a device plugged into the USB port. Metadata consists of such information asartist, album title, song title, and genre. The metadata is used by the APIM to create indexes that can be used to sort for particular music, based on customerpreference. Not all USB devices can send metadata to the APIM; also, no metadata is transferred when a device is connected through the audio input jack.When a new media device is connected to the SYNC system, the APIM automatically indexes the information. This may take several minutes (depending onthe amount of data on the device), and is considered normal operation. When a device that was previously connected to the SYNC system is reconnected, theAPIM updates the index (rather than creating a new one), which reduces the amount of time needed to create the index.

The APIM receives both stereo and mono sound inputs and can also transmit both stereo and mono sound. The mono function is used to receive themicrophone input, and to send sound to the ACM for voice prompts, the Text-To-Speech (TTS) feature, ringtones, and any audio received through aconnected mobile phone. The TTS feature speaks information so that it does not have to be read from the display.

The APIM communicates on the MS-CAN and the High Speed Controller Area Network (HS-CAN). Communication with the scan tool is establishedthrough the HS-CAN.

Global Positioning System Module (GPSM)The Global Positioning System Module (GPSM) provides vehicle location for real-time traffic reports and re-routing, and for identifying vehicle location inthe event of a collision. The vehicle location information is broadcast to the APIM over the MS-CAN. The GPSM is part of the SYNC system and is onlypresent for vehicles without navigation.

Voice Recognition For Vehicles With Navigation And The SYNC SystemWhen the audio system enters voice recognition mode, the ACM initially controls the voice recognition feature. The microphone is wired directly to theAPIM, which relays the microphone input to the ACM through dedicated wiring. If the first command spoken is part of the ACM voice recognition set, theACM retains control of the voice recognition and takes the appropriate action(s). If the first command spoken is part of the APIM voice recognition set, theACM shuts off its own voice recognition and broadcasts a Controller Area Network (CAN) message to the APIM, transferring the voice recognition to theSYNC system and providing the voice command that was spoken. The ACM controls the voice engine for the base audio, navigation, and climate controlsystems. The APIM controls the voice engine for the SYNC system (USB port, audio input jack, Bluetooth).

Steering Wheel ControlsThe steering wheel controls consist of a series of resistors. Each steering wheel control switch function corresponds with a specific resistance value withinthe switch. When a switch is pressed, the ACM (or the APIM) monitors the change in reference voltage to determine the requested function.

Noise Suppression EquipmentThe radio frequency suppression equipment reduces interference transmitted through the speakers by the engine ignition and electrical systems. Wheninstalling any new radio suppression equipment components, make sure that a good contact is made at all connections.

SubwoofersThe subwoofer speakers on the Shaker 500 system are located in the front doors and are powered by individual amplifiers located in the left hand kick panel.In addition to these subwoofer speakers, the Shaker 1000 system includes an enclosure with 2 subwoofer speakers powered by an amplifier. The enable/clipcircuit carries out 2 functions: to turn on the subwoofer amplifier, and to monitor an overload condition to the subwoofer amplifier. In the event of anoverload, the ACM clips the audio output signal to the subwoofer amplifier (heard as distortion).

Audio Input JackThe audio input jack allows for a portable MP3 player to be connected to the vehicle audio system. When a portable MP3 player is connected, audio fromthe MP3 player can be played through the vehicle speakers.

Audio SignalsStereo signals contain left and right channel information, and are used for most audio signals.

A mono signal is used for the microphone input to the APIM. The mono signal is also used for the voice prompts, the TTS feature, ringtones, and any audioreceived through a connected mobile phone. These audio signals are output from the APIM to the ACM. The mono and stereo outputs from the APIM utilizeseparate circuits.

A digital signal is used to transmit data from a media device connected through the USB port to the APIM. The APIM then converts the signal to analog andrelays the signal to the ACM.

A wireless signal is used to broadcast audio signals from a Bluetooth device to the APIM. As with a digital signal sent through the USB port, the APIMconverts the wireless audio signal to analog and relays it to the ACM.


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Network CommunicationThe following audio system components communicate via the MS-CAN:

• ACM

• Navigation ACM

• FCIM

• FDIM (vehicles without navigation)

• APIM

• GPSM

There are numerous messages internal to the audio system. The functions of these messages include (but are not limited to):

• Changing the audio source

• Changing equalizer settings

• Updating the FDIM display

• Dialing phone numbers from the ACM (if equipped with the SYNC system)

In addition, the following messages are utilized by the audio system in conjunction with systems outside of the audio system:

Audio System

Message TransmittingModule

ReceivingModule(s)

Audio System Function

Accessory Delay Status SJB ACM APIM FCIMFDIM

When active, this signal allows the audio component to be operated after thevehicle is shut off.

AFE Data Instrument PanelCluster (IPC)

ACM Provides average fuel economy data to the ACM. This message is onlyapplicable for vehicles with navigation.

Brake Sensor Data IPC GPSM Provides vehicle yaw rate to the GPSM for use in vehicle tracking.

Compass Display Data IPC FDIM Indicates the compass heading or mode (calibration, zone). This messageonly applies to vehicles without navigation.

eCall Notification Restraints ControlModule (RCM)

APIM Provides the eCall status to the APIM. This message is also used to confirmthat the APIM and the 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 confirmthat the APIM and the RCM are both configured for the eCall feature.

English/Metric Mode IPC ACM Indicates whether English or metric units is currently selected.

FCIM Button State FCIM ACM APIM IPC Indicates when a button is pressed on the FCIM so the audio system canmake the desired setting change.

HVAC System ButtonStatus (from ACM)

ACM HVAC module Indicates when a climate control setting is changed using the FDIMtouchscreen (which is hardwired to the ACM) so the HVAC module canmake the desired setting changes. This message only applies to vehicleswith navigation.

HVAC System ButtonStatus (from FCIM)

FCIM HVAC module Indicates when a climate control button is pressed on the FCIM so theHVAC module can make the desired setting change.

HVAC SystemIndication Command

(to ACM)

HVAC module ACM Indicates the mode of the HVAC module so the ACM can send the correctdisplay information to the FDIM. This message only applies to vehicleswith navigation.

HVAC SystemIndication Command

(to FCIM)

HVAC module FCIM Indicates the mode of the HVAC module so the FCIM can illuminate theappropriate indicator on the bezel face.

HVAC System VoiceRequest Status

ACM HVAC module Provides climate control setting changes that are initiated through the voicerecognition system. This message only applies to vehicles with navigation.

Ignition SwitchPosition

SJB ACM APIM FCIMFDIM GPSM

Indicates the ignition position to the audio system modules in order tocontrol power management.

Instrument IlluminationLevel

SJB ACM FCIM FDIM Controls the backlight intensity based on the position of the dimmer switch.

Navigation AudioRadio Rolling Wheel

Count

IPC ACM Used by the ACM to more accurately track vehicle position when the GPSsignal is temporarily unavailable.

GPSM Used by the GPSM for vehicle tracking if the vehicle speed signal is lost.


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Audio System (Continued)Message Transmitting

ModuleReceivingModule(s)

Audio System Function

Odometer RollingCount

PCM APIM Provides the odometer reading to the APIM in order to initiate maintenanceinterval notifications.

Park Brake Status SJB ACM Provides the park brake status to the ACM.

Temperature DisplayStatus

HVAC module ACM (with navigation)FDIM (without

navigation)

Indicates certain climate control settings such as temperature, fan speed, airdistribution, and outside air temperature.

TPMS Status SJB APIM Provides the current tire pressure and TPMS warning indicator status to theAPIM.

Transmission Selector(PRNDL) Status

IPC ACM GPSM For the navigation system, this signal is used for more accurate navigationtracking. For vehicles with rear view camera, this signal is used by theACM to determine if it should allow the video feed from the rear viewcamera to be shown on the FDIM. For vehicles with the SYNC system butnot navigation, this signal is used by the GPSM for more accurate vehicletracking.

Vehicle Speed IPC ACM Used by the ACM for the speed-compensated volume function.

APIM Used by the APIM to prevent driver distraction by limiting certain SYNCfunctions based on vehicle speed.

GPSM Used by the GPSM for vehicle tracking.

Vehicle IdentificationNumber (VIN)

Information

IPC ACM APIM Provides the VIN to verify the correct modules are installed.

Inspection and Verification1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical Electrical

• Front Controls Interface Module (FCIM)• Front Display Interface Module (FDIM)• AM/FM antenna• Satellite radio antenna• Audio input jack• Noise suppression equipment• Speaker(s)• Steering wheel controls• Universal Serial Bus (USB) port

• Battery Junction Box (BJB)— 20 (30A) (VBATT)— 33 (30A) (VBATT)

• Smart Junction Box (SJB) fuse(s):— 3 (15A) (VBATT)— 14 (10A) (VBATT)— 15 (15A) (VBATT)— 19 (25A) (VBATT)— 28 (5A) (START signal)— 39 (20A) (VBATT)

• Wiring, terminals or connectors

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

4. NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

5. NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:

• Check the VCM connection to the vehicle.

• Check the scan tool connection to the VCM.

• Refer to Section 418-00, No Power To The Scan Tool, to diagnose no power to the scan tool.

6. If the scan tool does not communicate with the vehicle:

• Verify the ignition key is in the ON position.

• Verify the scan tool operation with a known good vehicle.

• Refer to Section 418-00 to diagnose no response from the PCM.

7. Carry out the network test.


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• If the scan tool responds with no communication for one or more modules, refer to Section 418-00.

• If the network test passes, retrieve and record the continuous memory DTCs.

8. NOTE: Do not press any buttons on the FCIM or FDIM while the Audio Control Module (ACM) is carrying out the self-test.

Clear the continuous DTCs and carry out the self-test diagnostics for the ACM.

9. If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in Section419-10.

10. If no DTCs related to the concern are retrieved, refer to the Symptom Charts.

DTC Charts

NOTE: This module utilizes a 5-character DTC followed by a 2-character failure-type code. The failure-type code provides information about specific faultconditions such as opens, or shorts to ground. Continuous memory DTCs have an additional 2-character DTC status code suffix to assist in determining DTChistory.

Audio Control Module (ACM) DTC Chart — Without Navigation

DTC Description Action

B11BA:1C Steering Wheel Audio Switch Pack: Circuit Voltage out ofRange

GO to Pinpoint Test P.

B11BA:63 Steering Wheel Audio Switch Pack: Circuit / ComponentProtection Time-Out


B1A01:01 Speaker #1: General Electrical Failure GO to Pinpoint Test C.

B1A01:11 Speaker #1: Circuit Short to Ground GO to Pinpoint Test C.

B1A01:12 Speaker #1: Circuit Short to Battery GO to Pinpoint Test C.

B1A01:13 Speaker #1: Circuit Open GO to Pinpoint Test C.













B1A05:02 Speaker #5: General Signal Failure GO to Pinpoint Test D.

B1A06:02 Speaker #6: General Signal Failure GO to Pinpoint Test E.

B1A56:21 Antenna: Signal Amplitude ⟨ Minimum GO to Pinpoint Test A.

B1A89:01 Satellite Antenna: General Electrical Failure GO to Pinpoint Test B.

B1A89:13 Satellite Antenna: Circuit Open GO to Pinpoint Test B.

B1D19:49 Compact Disc Unit: Internal Electronic Failure CLEAR the DTCs. REPEAT the self-test. If DTC B1D19:49 isretrieved again, INSTALL a new Audio Control Module (ACM).REFER to Audio Control Module (ACM) in this section.REPEAT the self-test.

B1D78:13 Auxiliary Input: Circuit Open NOTE: This DTC is only applicable for vehicles without the SYNCsystem. For vehicles with the SYNC system, disregard the DTC.

GO to Pinpoint Test Q.


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Audio Control Module (ACM) DTC Chart — Without Navigation (Continued)DTC Description Action

U0140:00 Lost Communication With Body Control Module: No Sub TypeInformation

GO to Pinpoint Test AB.

U0155:00 Lost Communication With Instrument Panel Cluster (IPC)Control Module: No Sub Type Information

GO to Pinpoint Test AC.

U0197:00 Lost Communication With Telephone Control Module: No SubType Information

GO to Pinpoint Test AD.

U0255:00 Lost Communication With Front Display Interface Module: NoSub Type Information

GO to Pinpoint Test AE.

U0256:00 Lost Communication With Front Controls Interface Module: NoSub Type Information

GO to Pinpoint Test AF.

U2014:41 Control Module Hardware: General Checksum Failure CLEAR the DTCs. REPEAT the self-test. If DTC U2014:41 isretrieved again, INSTALL a new ACM. REFER to AudioControl Module (ACM) in this section. REPEAT the self-test.

U2014:42 Control Module Hardware: General Memory Failure CLEAR the DTCs. REPEAT the self-test. If DTC U2014:42 isretrieved again, INSTALL a new ACM. REFER to AudioControl Module (ACM) in this section. REPEAT the self-test.

U2014:96 Control Module Hardware: Component Internal Failure GO to Pinpoint Test H.

U201A:51 Control Module Main Calibration Data: Not Programmed REFER to Section 418-01.

U2100:00 Initial Configuration Not Complete: No Sub Type Information REFER to Section 418-01.

U2101:00 Control Module Configuration Incompatible: No Sub TypeInformation

REFER to Section 418-01.

U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AL.

U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AM.


Audio Control Module (ACM) DTC Chart — Navigation


B119F:01 GPS Antenna: General Electrical Failure GO to Pinpoint Test U.

B119F:13 GPS Antenna: Circuit Open GO to Pinpoint Test U.

B11BA:1C Steering Wheel Audio Switch Pack: Circuit Voltage out ofRange


B11BA:63 Steering Wheel Audio Switch Pack: Circuit / ComponentProtection Time-Out


B1201:1C Steering Wheel Audio Switch Pack 2: Circuit Voltage out ofRange


B1201:63 Steering Wheel Audio Switch Pack 2: Circuit / ComponentProtection Time-Out


B121C:01 Hard Drive: General Electrical Failure CLEAR the DTCs. REPEAT the self-test. If DTC B121C:01 isretrieved again, INSTALL a new Audio Control Module (ACM).REFER to Audio Control Module (ACM) in this section.REPEAT the self-test.





B1A05:01 Speaker #5: General Electrical Failure GO to Pinpoint Test D.

B1A56:21 Antenna: Signal Amplitude ⟨ Minimum GO to Pinpoint Test A.

B1A89:01 Satellite Antenna: General Electrical Failure GO to Pinpoint Test B.

B1A89:13 Satellite Antenna: Circuit Open GO to Pinpoint Test B.


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Audio Control Module (ACM) DTC Chart — Navigation (Continued)DTC Description Action

B1D19:49 Compact Disc Unit: Internal Electrical Failure CLEAR the DTCs. REPEAT the self-test. If DTC B1D19:49 isretrieved again, INSTALL a new ACM. REFER to AudioControl Module (ACM) in this section. REPEAT the self-test.

B1D19:4B Compact Disc Unit: Over Temperature The ACM was over-temperature. This may occur duringextended use. Audio operation can resume after the ACM cools.CLEAR the DTCs. This is normal operation.

B1D79:01 Microphone Input: General Electrical Failure GO to Pinpoint Test T.





U0162:00 Lost Communication With Navigation Display Module: No SubType Information

GO to Pinpoint Test L.

U0164:00 Lost Communication With HVAC Control Module: No SubType Information

GO to Pinpoint Test AG.

U0197:00 Lost Communication With Telephone Control Module: No SubType Information

GO to Pinpoint Test AD.



U2014:09 Control Module Hardware: Component Failure GO to Pinpoint Test V.

U2014:41 Control Module Hardware: General Checksum Failure CLEAR the DTCs. REPEAT the self-test. If DTC U2014:41 isretrieved again, INSTALL a new ACM. REFER to AudioControl Module (ACM) in this section. REPEAT the self-test.

U2014:96 Control Module Hardware: Component Internal Failure GO to Pinpoint Test H.





U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AL.

U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AM.


Accessory Protocol Interface Module (APIM) DTC Chart


B1201:1C Steering Wheel Audio Switch Pack 2: Circuit Voltage Out ofRange


B1201:63 Steering Wheel Audio Switch Pack 2: Circuit / ComponentProtection Time-Out


B1252:04 USB Port: System Internal Failure GO to Pinpoint Test Z.

B1252:11 USB Port: Circuit Short to Ground GO to Pinpoint Test Z.

B1A16:01 Microphone Input Circuit: General Electrical Failure GO to Pinpoint Test T.

U0100:00 Lost Communication With ECM/PCM "A": No Sub TypeInformation

GO to Pinpoint Test AH.



U0151:00 Lost Communication With Restraints Control Module: No SubType Information

GO to Pinpoint Test AI.




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Accessory Protocol Interface Module (APIM) DTC Chart (Continued)DTC Description Action

U016A:00 Lost Communication With Global Positioning System Module:No Sub Type Information

GO to Pinpoint Test AJ.

U0184:00 Lost Communication With Radio: No Sub Type Information GO to Pinpoint Test AK.

U0255:00 Lost Communication With Front Display Interface Module: NoSub Type Information

GO to Pinpoint Test AE.



U0422:00 Invalid Data Received From Body Control Module: No SubType Information

RETRIEVE and FOLLOW other DTCs present in the AccessoryProtocol Interface Module (APIM) or Smart Junction Box (SJB).

U0423:00 Invalid Data Received From Instrument Panel Control Module:No Sub Type Information

RETRIEVE and FOLLOW other DTCs present in the APIM orInstrument Panel Cluster (IPC).

U046B:00 Invalid Data Received From Global Positioning System Module:No Sub Type Information

RETRIEVE and FOLLOW other DTCs present in the APIM orGlobal Positioning System Module (GPSM).

U0485:00 Invalid Data Received From Radio: No Sub Type Information RETRIEVE and FOLLOW other DTCs present in the APIM orAudio Control Module (ACM).




U3000:04 Control Module: System Internal Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:04 isstill present, INSTALL a new APIM. REFER to AccessoryProtocol Interface Module (APIM) in this section. REPEAT theself-test.

U3000:41 Control Module: General Checksum Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:41 isstill present, INSTALL a new APIM. REFER to AccessoryProtocol Interface Module (APIM) in this section. REPEAT theself-test.

U3000:42 Control Module: General Memory Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:42 isstill present, INSTALL a new APIM. REFER to AccessoryProtocol Interface Module (APIM) in this section. REPEAT theself-test.

U3000:88 Control Module: Bus Off REFER to Section 418-00.

U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AN.

U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AO.


Front Controls Interface Module (FCIM) DTC Chart




U0184:00 Lost Communication With Radio: No Sub Type Information GO to Pinpoint Test AK.

U2013:63 Switch Pack: Circuit / Component Protection Time-Out GO to Pinpoint Test I.

U2014:41 Control Module Hardware: General Checksum Failure CLEAR the DTCs. REPEAT the self-test. If DTC U2014:41 isstill present, INSTALL a new Front Controls Interface Module(FCIM). REFER to Front Controls Interface Module (FCIM) inthis section. REPEAT the self-test.

U2014:42 Control Module Hardware: General Memory Failure CLEAR the DTCs. REPEAT the self-test. If DTC U2014:42 isstill present, INSTALL a new FCIM. REFER to Front ControlsInterface Module (FCIM) in this section. REPEAT the self-test.


U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AP.

U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AQ.


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Front Display Interface Module (FDIM) DTC Chart — Without Navigation


B1318 Battery Voltage Low GO to Pinpoint Test AR.

B1342 ECU is Faulted CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is stillpresent, INSTALL a new Front Display Interface Module(FDIM). REFER to Front Display Interface Module (FDIM) inthis section. REPEAT the self-test.

B2477 Module Configuration Failure REFER to Section 418-01.

U0140 Lost Communication With Body Control Module (GEM) GO to Pinpoint Test AB.

U0155 Lost Communication With Instrument Panel Cluster (IPC)Control Module


U0164 Lost Communication With HVAC Control Module (EATC) GO to Pinpoint Test AG.

U0184 Lost Communication With Radio (ACM) GO to Pinpoint Test AK.

U0197 Lost Communication With Telephone Control Module GO to Pinpoint Test AD.

U2050 No Application Present REFER to Section 418-01.

U2051 One or More Calibration Files Missing/Corrupt REFER to Section 418-01.


Global Positioning System Module (GPSM) DTC Chart






U0422:00 Invalid Data Received From Body Control Module: No SubType Information

RETRIEVE and FOLLOW other DTCs present in the GlobalPositioning System Module (GPSM) or Smart Junction Box(SJB).

U0423:00 Invalid Data Received from Instrument Panel Cluster ControlModule: No Sub Type Information

RETRIEVE and FOLLOW other DTCs present in the GPSM orInstrument Panel Cluster (IPC).

U3000:09 Control Module: Component Failure CLEAR the DTCs. REPEAT the self-test. If DTC U3000:09 isstill present, INSTALL a new GPSM. REFER to GlobalPositioning System Module (GPSM) in this section. REPEATthe self-test.



U3003:16 Battery Voltage: Circuit Voltage Below Threshold GO to Pinpoint Test AS.

U3003:17 Battery Voltage: Circuit Voltage Above Threshold GO to Pinpoint Test AT.

Symptom Chart — General Audio System

General Audio SystemCondition Possible Sources Action

• No communication with the Audio ControlModule (ACM)

• Fuse• Wiring, terminals or connectors• ACM

• REFER to Section 418-00.


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General Audio System (Continued)Condition Possible Sources Action

• No communication with the AccessoryProtocol Interface Module (APIM)

• Fuse• Wiring, terminals or connectors• APIM


• No communication with the Front ControlsInterface Module (FCIM)

• Fuse• Wiring, terminals or connectors• FCIM


• No communication with the Front DisplayInterface Module (FDIM)

• Fuse• Wiring, terminals or connectors• FDIM


• No communication with the GlobalPositioning System Module (GPSM)

• Fuse• Wiring, terminals or connectors• GPSM


• The CD player is inoperative/does notoperate correctly

• CD• ACM

• INSPECT the CD for scratches, fingerprints,a loose paper label, incorrect format, ordamage. INSERT a known good CD andTEST the system.— If the system operates correctly, the

concern was caused by a damaged CD.— If the system does not operate

correctly, INSTALL a new ACM.REFER to Audio Control Module(ACM) in this section. TEST thesystem for normal operation.

• The Front Controls Interface Module(FCIM) illumination is inoperative

• Backlighting system concern• FCIM


• The audio system does not operate correctlyfrom the Front Controls Interface Module(FCIM)

• Communication network concern• FCIM

• GO to Pinpoint Test I.

• An individual Front Display InterfaceModule (FDIM) display is inoperative —vehicles without navigation

• Communication network concern• FDIM

• GO to Pinpoint Test J.

• An individual Front Display InterfaceModule (FDIM) display is inoperative —vehicles with navigation

• Communication network concern• FDIM• ACM

• GO to Pinpoint Test K.

• The audio system does not operate correctlyfrom the Front Display Interface Module(FDIM) — vehicles with navigation

• Wiring, terminals or connectors• FDIM• ACM

• GO to Pinpoint Test L.

• The Front Display Interface Module (FDIM)is completely inoperative — vehicleswithout navigation

• Communication network concern• FDIM

• GO to Pinpoint Test M.

• The Front Display Interface Module (FDIM)is completely inoperative — vehicles withnavigation

• Fuse• Wiring, terminals or connectors• FDIM• ACM

• GO to Pinpoint Test N.

• The Front Display Interface Module (FDIM)illumination is inoperative — vehicles withnavigation


• GO to Pinpoint Test N.

• The Front Display Interface Module (FDIM)does not display DVD video played fromthe Audio Control Module (ACM) —vehicles with navigation


• GO to Pinpoint Test O.

• Loud popping sound when cycling theignition


• GO to Pinpoint Test R.

• The steering wheel controls are inoperative/do not operate correctly

• Wiring, terminals or connectors• Clockspring• Steering wheel controls

• GO to Pinpoint Test P.


2011 Mustang, 2/2011

General Audio System (Continued)Condition Possible Sources Action

• ACM• APIM (without navigation only)

• The audio input jack is inoperative/does notoperate correctly

• Wiring, terminals or connectors• Audio input jack• APIM (vehicles with the SYNC system)• ACM (vehicles without the SYNC system)

• GO to Pinpoint Test Q.

• The speed sensitive volume does not operatecorrectly

• Speed sensitive volume setting• Vehicle Speed Sensor (VSS) signal concern• Communication network concern• ACM

• GO to Pinpoint Test S.

• Voice recognition is inoperative/does notoperate correctly

• Wiring, terminals or connectors• Microphone (part of auto-dimming interior

mirror)• Steering wheel controls• ACM (if equipped with navigation)• APIM (if equipped)

• GO to Pinpoint Test T.

Symptom Chart — Sound Quality

Sound QualityCondition Possible Sources Action

• Poor reception — AM/FM • Wiring, terminals or connectors• AM/FM antenna• AM/FM antenna cable• Charging system• Ignition system• Noise suppression equipment• Audio Control Module (ACM)

• GO to Pinpoint Test A.

• Poor reception — satellite radio • Obstructions to the antenna line of sight• Satellite radio antenna• Satellite radio antenna cable• ACM

• GO to Pinpoint Test B.

• Continuous seek/scan — AM/FM • No channel found in the selected category• AM/FM antenna• AM/FM antenna cable• Noise suppression equipment• ACM

• GO to Pinpoint Test A.

• Continuous seek/scan — satellite radio • Obstructions to the antenna line of sight• No channel found in the selected category• Satellite radio antenna• Satellite radio antenna cable• ACM


• Poor sound quality/no sound while insatellite radio mode — all other functionsoperate correctly

• Satellite radio antenna• Satellite radio antenna cable• ACM


• Poor quality/distorted/no sound from one ormore speakers (not all speakers) — exceptsubwoofers

• Wiring, terminals or connectors• Audio amplifier (navigation only)• Speaker• ACM

• GO to Pinpoint Test C.

• Poor quality/distorted/no sound from thedoor subwoofer(s)

• Fuse• Wiring, terminals or connectors• Door subwoofer speaker• Door subwoofer amplifier• ACM

• GO to Pinpoint Test D.

• Poor quality/distorted/no sound from theluggage compartment subwoofer

• Fuse• Wiring, terminals or connectors• Speaker enclosure

• GO to Pinpoint Test E.


2011 Mustang, 2/2011

Sound Quality (Continued)Condition Possible Sources Action

• Luggage compartment subwoofer amplifier• ACM

• Poor quality/distorted/no sound from allspeakers


• GO to Pinpoint Test F.

• Poor quality/distorted/no sound while inSYNC mode

• Wiring, terminals or connectors• Accessory Protocol Interface Module

(APIM)• ACM

• GO to Pinpoint Test G.

Symptom Chart — Satellite Radio

Satellite RadioCondition Possible Sources Action

• Poor reception — satellite radio • Obstructions to the antenna line of sight• Satellite radio antenna• Satellite radio antenna cable• ACM


• Continuous seek/scan — satellite radio • Obstructions to the antenna line of sight• No channel found in the selected category• Satellite radio antenna• Satellite radio antenna cable• ACM


• Poor sound quality/no sound while insatellite radio mode — all other functionsoperate correctly

• Obstructions to the antenna line of sight• Satellite radio antenna• Satellite radio antenna cable• ACM


• The satellite radio is inoperative/does notoperate correctly

• Subscription status• ACM

• GO to Pinpoint Test H.

Symptom Chart — Navigation

NavigationCondition Possible Sources Action

• No Global Positioning System (GPS)antenna signal

• Satellite radio antenna cable• Audio Control Module (ACM)

• GO to Pinpoint Test U.

• The position cursor is inaccurate • GPS antenna concern• Network message concern• ACM

• GO to Pinpoint Test V.

• The voice guidance is inoperative/does notoperate correctly

• Incorrect voice guidance setting• ACM

• GO to Pinpoint Test W.


• Wiring, terminals or connectors• Microphone (part of the auto-dimming

interior mirror)• Steering wheel controls• ACM• Accessory Protocol Interface Module

(APIM)


Symptom Chart — SYNC System

SYNC SystemCondition Possible Sources Action


2011 Mustang, 2/2011

SYNC System (Continued)Condition Possible Sources Action

• The SYNC system is completely inoperative • Audio system concern• Communication network concern• Customer error• Customer device• Accessory Protocol Interface Module

(APIM)

• GO to Pinpoint Test X.

• Unable to pair Bluetooth device • Incompatible Bluetooth device• Customer error• Customer Bluetooth device• APIM

• GO to Pinpoint Test Y.

• An individual Bluetooth device feature isinoperative

• Customer device compatibility • NOTE: If a Bluetooth device is able to pair with theSYNC system, there are no concerns withthe APIM.

INSTRUCT the customer to review thedevice compatibility list on theSyncMyRide website. Not all phone features are availablethrough the SYNC system. This is normaloperation.

• The Universal Serial Bus (USB) port isinoperative/does not operate correctly

• Customer USB device• USB cable and port• APIM

• GO to Pinpoint Test Z.

• The steering wheel controls are inoperative/do not operate correctly

• Wiring, terminals or connectors• Clockspring• Steering wheel controls• ACM• APIM (without navigation only)

• GO to Pinpoint Test P.

• The audio input jack is inoperative/does notoperate correctly

• Wiring, terminals or connectors• Audio input jack• APIM

• GO to Pinpoint Test Q.

• Poor quality/distorted/no sound while inSYNC mode

• Wiring, terminals or connectors• APIM• ACM

• GO to Pinpoint Test G.

• The SYNC system audible prompts areinoperative/do not operate correctly

• Customer setting• Wiring, terminals or connectors• ACM• APIM

• NOTE: The audible prompts include the Text-To-Speech (TTS) feature, voice prompts, andringtones.

GO to Pinpoint Test AA.

• During a phone call, no incoming audio isheard in the vehicle

• Customer setting• Wiring, terminals or connectors• ACM• APIM

• GO to Pinpoint Test AA.



interior mirror)• Steering wheel controls• ACM (if equipped with navigation)• APIM


• During a phone call, no outgoing audio isheard on the outside device


interior mirror)• APIM


Pinpoint TestsPinpoint Test A: Poor Reception — AM/FMRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.


2011 Mustang, 2/2011

Normal OperationThe AM/FM antenna receives AM and FM radio waves and transmits them to the Audio Control Module (ACM) through the AM/FM antenna cables. TheACM powers the AM/FM antenna in order to amplify the AM signal.

The noise suppression equipment reduces engine ignition and electrical systems interference transmitted through the speakers.

The RDS function allows the vehicle operator to choose which genre (category) of music to listen to. When the SCAN button is pressed, the ACM only stopsat channels falling within the selected category. If no channel in the selected category is found, the ACM continues to scan without stopping. This mayappear to be a reception issue, but it is actually due to the customer setting.

• DTC B1A56:21 (Antenna: Signal Amplitude ⟨ Minimum) — sets when the signal strength is less than the pre-configured threshold value during theself-test.

This pinpoint test is intended to diagnose the following:

• No channel found in the selected category


• AM/FM antenna

• AM/FM antenna cable

• Charging system

• Ignition system

• Noise suppression equipment

• ACM

PINPOINT TEST A: POOR RECEPTION — AM/FMNOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Test Step Result / Action to Take

A1 CHECK THE RDS SETTING

• Turn the RDS function off. Refer to the Owner's Literature.• Scan for a good channel.• Does the audio system find a good channel with normal

reception?

YesThe system is operating correctly at this time. Theconcern was a result of no channel being found in theselected category.

NoGO to A2.

A2 CHECK THE AUDIO SYSTEM RECEPTION

• Check the audio system reception with the engine running, and withthe engine off.

• Does the poor reception only occur with the engine running?

YesGO to A3.

NoGO to A7.

A3 CHECK THE NOISE SUPPRESSION EQUIPMENT

• Check the engine ground strap for security, cleanliness, and metal-to-metal contact.

• Are the connections clean, secure, and in metal-to-metalcontact?

YesGO to A4.

NoCLEAN and SECURE the connections, or INSTALL anew engine ground strap as needed. TEST the systemfor normal operation.

A4 CHECK THE RADIO INTERFERENCE CAPACITOR

• Install a new radio interference capacitor.• Start the vehicle.• Operate the audio system in radio tuner (AM/FM) mode.• Is the reception OK?

YesThe cause of the concern was an inoperative radiointerference capacitor. The system is now operatingcorrectly.

NoGO to A5.

A5 CHECK THE GENERATOR

• Ignition OFF.• Disconnect: Generator C102a.• Start the engine.• Operate the audio system in radio tuner (AM/FM) mode.

YesINSTALL a new generator. REFER to Section 414-00.TEST the system for normal operation.


2011 Mustang, 2/2011

PINPOINT TEST A: POOR RECEPTION — AM/FM (Continued)A5 CHECK THE GENERATOR (Continued)

• Is the reception OK? NoGO to A6.

A6 CHECK THE IGNITION CIRCUITS

• Ignition OFF.• Connect: Generator C102a.• Check the ignition circuits for correct routing, grounding, and integrity

of the connections.• Are the ignition components OK?

YesUSE a jumper cable to ground various parts of thevehicle to the frame (for example: engine, fenders,quarter panels, stone deflectors, air cleaner, bodysheet metal). When the noise is eliminated, PROVIDEa permanent ground where necessary. TEST thesystem for normal operation.

NoREPAIR the ignition system as necessary. TEST thesystem for normal operation.

A7 CHECK THE AM/FM ANTENNA ENABLE CIRCUIT

• Ignition OFF.• Disconnect: AM/FM Antenna C4082.• Operate the audio system in radio tuner (AM/FM) mode.• Measure the voltage between the AM/FM antenna C4082-1, circuit

CME44 (YE/GN), harness side and ground.

• Is the voltage greater than 10 volts?

YesGO to A9.

NoGO to A8.

A8 CHECK THE AM/FM ANTENNA ENABLE CIRCUIT FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Disconnect: ACM C290d.• Measure the resistance between the ACM C290d-5, circuit CME44

(YE/GN), harness side and the AM/FM antenna C4082-1, circuitCME44 (YE/GN), harness side; and between the ACM C290d-5,circuit CME44 (YE/GN), harness side and ground.

• Is the resistance less than 5 ohms between the ACM and the AM/FM antenna, and greater than 10,000 ohms between the ACM andground?

YesGO to A11.

NoREPAIR the circuit. TEST the system for normaloperation.

A9 ISOLATE THE AM/FM ANTENNA


2011 Mustang, 2/2011

PINPOINT TEST A: POOR RECEPTION — AM/FM (Continued)A9 ISOLATE THE AM/FM ANTENNA (Continued)

• Ignition OFF.• Connect: ACM C290d.• Install a new AM/FM antenna. Refer to Antenna — AM/FM in this

section.• Operate the audio system in radio tuner (AM/FM) mode.• Is the reception OK?

YesThe concern was caused by an inoperative AM/FMantenna. The system is now operating correctly.

NoGO to A10.

A10 ISOLATE THE AM/FM ANTENNA CABLES

• Ignition OFF.• Substitute each AM/FM antenna cable one at a time by routing a new

component. Do not remove the original antenna cable at this time.• Operate the audio system in radio tuner (AM/FM) mode.• Is the reception OK?

YesINSTALL a new AM/FM antenna cable for theinoperative cable. REFER to Antenna Cable — AM/FMin this section. TEST the system for normal operation.

NoGO to A11.

A11 CHECK FOR CORRECT ACM OPERATION

• Ignition OFF.• Disconnect all the ACM connectors.• Check for:

— corrosion— damaged pins— pushed-out pins

• Connect all the ACM connectors and make sure they seat correctly.• Operate the system and determine if the concern is still present.• Is the concern still present?

YesINSTALL a new ACM. REFER to Audio Control Module(ACM) in this section. TEST the system for normaloperation.

NoThe system is operating correctly at this time. Theconcern may have been caused by a loose or corrodedconnector. TEST the system for normal operation.

Pinpoint Test B: Poor Reception/Poor Sound Quality/No Sound — Satellite Radio

Normal OperationDigital signals are received by the satellite radio antenna and sent to the Audio Control Module (ACM), as the satellite radio receiver is built-in to the ACM.

A short to ground in the satellite radio antenna typically has no effect on the antenna signal. However, an open in the antenna circuit results in no sound fromthe satellite radio system. A short to voltage in the antenna circuit can have varying effects on the system.

Obstructions to the antenna line of sight can affect reception, but this is considered normal operation. Possible obstructions include hills, tall buildings,tunnels, and being parked inside a garage. Be sure the vehicle is in a clear area, free of obstructions, before testing satellite radio reception.

• DTC B1A89:01 (Satellite Antenna: General Electrical Failure) — can set when any fault is detected in the satellite radio antenna circuit. This DTC canbe either continuous or on-demand.

• DTC B1A89:13 (Satellite Antenna: Circuit Open) — sets when an open is detected in the satellite radio antenna circuit. This DTC can be eithercontinuous or on-demand.


• Obstructions to the antenna line of sight

• No channel found in the selected category

• Satellite radio antenna

• Satellite radio antenna cable

• ACM

PINPOINT TEST B: POOR RECEPTION/POOR SOUND QUALITY/NO SOUND — SATELLITERADIO

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.


B1 CHECK THE CATEGORY FILTER SETTING

• Turn the category filter function off. For additional information, refer tothe Owner's Literature.

• Drive the vehicle to an open location, free of obstacles.• Scan for a good channel.

YesThe system is operating correctly at this time. Theconcern was a result of no channel being found in theselected category or obstructions to the antenna line ofsight.


2011 Mustang, 2/2011

PINPOINT TEST B: POOR RECEPTION/POOR SOUND QUALITY/NO SOUND — SATELLITERADIO (Continued)


B1 CHECK THE CATEGORY FILTER SETTING (Continued)• Does the satellite audio system find a good channel with normal

reception?NoGO to B2.

B2 CHECK THE SATELLITE SIGNAL PID (SAT_SIG_STR)

• Enter the following diagnostic mode on the scan tool: ACMDataLogger.

• Monitor the ACM PID (SAT_SIG_STR).• Does the PID indicate "No Signal" or "Undefined"?

YesGO to B3.

NoGO to B5.

B3 CHECK THE SATELLITE RADIO ANTENNA CABLE RESISTANCE

• Ignition OFF.• Disconnect: Satellite Radio Antenna Connection At ACM.• Disconnect: Satellite Radio Antenna Cable In-Line Connection Behind

The Glove Compartment.• Disconnect: Satellite Radio Antenna Connection At Satellite Radio

Antenna.• Measure the resistance of the front satellite radio antenna cable core

between the ACM and the satellite radio antenna in-line connection;and between the front satellite radio antenna cable core and shield.

• Measure the resistance of the rear satellite radio antenna cable corebetween the satellite radio antenna and the satellite radio antenna in-line connection; and between the rear satellite radio antenna cablecore and shield.

• Is the resistance of each satellite radio antenna cable core lessthan 2 ohms, and the resistance between the core and shield ofeach satellite radio antenna cable greater than 10,000 ohms?

YesGO to B4.

NoINSTALL a new front or rear satellite radio antennacable. REFER to Antenna Cable — Satellite Radio inthis section. CLEAR any DTCs present. TEST thesystem for normal operation.

B4 ISOLATE THE SATELLITE RADIO ANTENNA

• Install a new satellite radio antenna. Refer to Antenna — SatelliteRadio in this section.

• Operate the audio system in satellite radio mode.• Is the reception OK?

YesThe concern was caused by an inoperative satelliteradio antenna. The system is operating correctly at thistime. CLEAR any DTCs present.

NoGO to B5.

B5 CHECK FOR CORRECT ACM OPERATION





NoThe system is operating correctly at this time. Theconcern may have been caused by a loose or corrodedconnector.

Pinpoint Test C: Poor Quality/Distorted/No Sound From One Or More Speakers (Not All Speakers) — Except SubwoofersRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThe Audio Control Module (ACM) directs audio signals to the speakers in the form of an AC voltage. The ACM provides internal circuit protection forshorts to ground or shorts to voltage.

A short to ground or short to voltage in the circuitry to one of the speakers can cause multiple speakers to lose sound due to the built-in overload protectionfeature of the ACM. In this case, a speaker fault DTC sets, and this pinpoint test should be followed to isolate the damaged circuit.

The speaker walk test can be used to isolate a concern with a particular speaker. This can reduce the diagnostic steps necessary to isolate the concern. Tocarry out the speaker walk test, refer to Audio Control Module (ACM) Self-Diagnostic Mode in this section.




2011 Mustang, 2/2011

• Speaker

• Audio amplifier (navigation only)

• ACM

Root DTC Description Failure-Type Codes Fault Trigger Conditions

B1A01 — Speaker #1 01, 11, 12, 13 Sets when a fault is detected in the LF speaker circuits. This DTC can be continuous or on-demand.

B1A02 — Speaker #2 01, 11, 12, 13 Sets when a fault is detected in the RF speaker circuits. This DTC can be continuous or on-demand.

B1A03 — Speaker #3 01, 11, 12, 13 Sets when a fault is detected in the RR speaker circuits. This DTC can be continuous or on-demand.

B1A04 — Speaker #4 01, 11, 12, 13 Sets when a fault is detected in the LR speaker circuits. This DTC can be continuous or on-demand.

PINPOINT TEST C: POOR QUALITY/DISTORTED/NO SOUND FROM ONE OR MORE SPEAKERS(NOT ALL SPEAKERS) — EXCEPT SUBWOOFERS


NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Section 414-01.


C1 CHECK THE AUDIO SIGNAL TO THE SUSPECT SPEAKER

• Ignition OFF.• Disconnect: Suspect Speaker.• Operate the audio system in radio tuner (AM/FM) mode.• Measure the AC voltage between the suspect speaker pin 1 and pin

2, harness side as follows:

Suspect Speaker Positive Meter Lead Negative MeterLead

LH front C523-1VME07 (WH)

C523-2RME07 (WH/BN)

RH front C612-1VME10 (WH/VT)

C612-2RME10 (WH/OG)

LH rear (coupe) C484-1VME09 (WH/GN)

C484-2RME09 (BN/YE)

RH rear (coupe) C485-1VME12 (BN/WH)

C485-2RME12 (BN/BU)

LH rear quarterpanel (convertible)

C395-1VME09 (WH/GN)

C395-2RME09 (BN/YE)

RH rear quarterpanel (convertible)

C396-1VME12 (BN/WH)

C396-2RME12 (BN/BU)

• Is an alternating AC voltage present?

YesINSTALL a new speaker for the suspect speaker.REFER to the appropriate speaker procedure in thissection. CLEAR any DTCs present. TEST the systemfor normal operation.

NoFor vehicles with navigation, GO to C2.For vehicles without navigation, GO to C10.


2011 Mustang, 2/2011

PINPOINT TEST C: POOR QUALITY/DISTORTED/NO SOUND FROM ONE OR MORE SPEAKERS(NOT ALL SPEAKERS) — EXCEPT SUBWOOFERS (Continued)

C2 CHECK THE AUDIO AMPLIFIER VOLTAGE SUPPLY

• Ignition OFF.• Disconnect: Audio Amplifier C4364b .• Measure the voltage between the audio amplifier C4364b-1, circuit

SBP19 (BU/RD), harness side and ground.


YesGO to C3.

NoVERIFY the SJB fuse 19 (25A) is OK. If OK, REPAIRthe circuit. TEST the system for normal operation. If notOK, REFER to the Wiring Diagrams Manual to identifythe possible causes of the circuit short.

C3 CHECK THE AUDIO AMPLIFIER GROUND FOR CONTINUITY

• Disconnect: Negative Battery Cable.• Measure the resistance between the audio amplifier C4364b-7, circuit

GD173 (BK), harness side and ground.

• Is the resistance less than 5 ohms?

YesGO to C4.

NoREPAIR the circuit. CLEAR any DTCs present. TESTthe system for normal operation.

C4 CHECK THE AUDIO AMPLIFIER ENABLE CIRCUIT FOR CORRECT VOLTAGE

• Connect: Negative Battery Cable.• Operate the audio system in radio tuner (AM/FM) mode.• Measure the voltage between the audio amplifier C4364b-9, circuit

CME31 (BU/GN), harness side and ground.

• Is the voltage between 3.8 and 6.7 volts?

YesGO to C7.

NoGO to C5.

C5 CHECK THE AUDIO AMPLIFIER ENABLE CIRCUIT FOR A SHORT TO VOLTAGE


2011 Mustang, 2/2011


C5 CHECK THE AUDIO AMPLIFIER ENABLE CIRCUIT FOR A SHORT TO VOLTAGE (Continued)

• Ignition OFF.• Disconnect: ACM C290d.• Ignition ON.• Measure the voltage between the audio amplifier C4364b-9, circuit

CME31 (BU/GN), harness side and ground.

• Is any voltage present?

YesREPAIR the circuit. TEST the system for normaloperation.

NoGO to C6.

C6 CHECK THE AUDIO AMPLIFIER ENABLE CIRCUIT FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the ACM C290d-7, circuit CME31

(BU/GN), harness side and the audio amplifier C4364b-9, circuitCME31 (BU/GN), harness side; and between the ACM C290d-7,circuit CME31 (BU/GN), harness side and ground.

• Is the resistance less than 5 ohms between the ACM and theaudio amplifier, and greater than 10,000 ohms between the ACMand ground?

YesGO to C7.


C7 CHECK THE AUDIO SIGNALS TO THE AUDIO AMPLIFIER

• Connect: ACM C290d.• Disconnect: Audio Amplifier C4364a .• Operate the audio system in radio tuner (AM/FM) mode.• Measure the AC voltage between the audio amplifier pins, harness

side as follows:


LH front C4364a-8VME17 (GN)

C4364a-4RME17 (GY)

RH front C4364a-6VME18 (VT)

C4364a-2RME18 (YE)

LH rear C4364a-7 C4364a-3

YesGO to C10.

NoGO to C8.


2011 Mustang, 2/2011


C7 CHECK THE AUDIO SIGNALS TO THE AUDIO AMPLIFIER (Continued)(Continued)


VME60 (GN/BN) RME60 (GY/BN)

RH rear C4364a-5VME61 (VT/BN)

C4364a-1RME61 (YE/BU)

• Is a fluctuating AC voltage present?

C8 CHECK THE AUDIO CIRCUITS TO THE AUDIO AMPLIFIER FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C290d.• Ignition ON.• Measure the voltage between the audio amplifier, harness side and

ground as follows:


LH front C4364a-4RME17 (GY)

C4364a-8VME17 (GN)

RH front C4364a-2RME18 (YE)

C4364a-6VME18 (VT)

LH rear C4364a-3RME60 (GY/BN)

C4464a-7VME60 (GN/BN)

RH rear C4364a-1RME61 (YE/BU)

C4364a-5VME61 (VT/BN)


YesREPAIR the circuit in question. CLEAR any DTCspresent. TEST the system for normal operation.

NoGO to C9.

C9 CHECK THE AUDIO CIRCUITS TO THE AUDIO AMPLIFIER FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF. YesGO to C12.


2011 Mustang, 2/2011


C9 CHECK THE AUDIO CIRCUITS TO THE AUDIO AMPLIFIER FOR AN OPEN OR SHORT TO GROUND (Continued)• Measure the resistance between the audio amplifier, harness side

and the ACM, harness side; and between the audio amplifier, harnessside and ground as follows:

SuspectSpeaker

Positive MeterLead

NegativeMeter Lead

Circuit

LH front C4364a-8 C290d-8 VME17 (GN)

C4364a-4 C290d-21 RME17 (GY)

RH front C4364a-6 C290d-11 VME18 (VT)

C4364a-2 C290d-12 RME18 (YE)

LH rear C4364a-7 C290d-9 VME60 (GN/BN)

C4364a-3 C290d-22 RME60 (GY/BN)

RH rear C4364a-5 C290d-10 VME61 (VT/BN)

C4364a-1 C290d-23 RME61 (YE/BU)

• Is the resistance less than 5 ohms between the audio amplifierand the ACM, and greater than 10,000 ohms between the audioamplifier and ground?

NoREPAIR the circuit in question. CLEAR any DTCspresent. TEST the system for normal operation.

C10 CHECK THE SPEAKER CIRCUITS FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C290d.• Connect: Audio Amplifier C4364a.• Connect: Audio Amplifier C4364b.• Ignition ON.• Measure the voltage between the suspect speaker, harness side and

ground as follows:


LH front VME07 (WH)RME07 (WH/BN)

C523-1C523-2

RH front VME10 (WH/VT)RME10 (WH/OG)

C612-1C612-2

LH rear (coupe) VME09 (WH/GN)RME09 (BN/YE)

C484-1C484-2

RH rear (coupe) VME12 (BN/WH) C485-1


NoGO to C11.


2011 Mustang, 2/2011


C10 CHECK THE SPEAKER CIRCUITS FOR A SHORT TO VOLTAGE (Continued)(Continued)


RME12 (BN/BU) C485-2

LH rear quarterpanel (convertible)

VME09 (WH/GN)RME09 (BN/YE)

C395-1C395-2

RH rear quarterpanel (convertible)

VME12 (BN/WH)RME12 (BN/BU)

C396-1C396-2


C11 CHECK THE SPEAKER CIRCUITS FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the suspect speaker, harness side

and the ACM (vehicles without navigation) or the audio amplifier(vehicles with navigation) harness side; and between the suspectspeaker, harness side and ground as follows:

SuspectSpeaker

Positive MeterLead

NegativeMeter Lead

Circuit

LH front C523-1 C290d-8 orC4364b-13,then ground

VME07 (WH)

C523-2 C290d-21 orC4364b-6, the

ground

RME07 (WH/BN)

RH front C612-1 C290d-11 orC4364b-11,then ground

VME10 (WH/VT)

C612-2 C290d-12 orC4364b-4,

then ground

RME10 (WH/OG)

LH rear(coupe)

C484-1 C290d-9 orC4364b-12,then ground

VME09 (WH/GN)

C484-2 C290d-22, orC4364b-5,

then ground

RME09 (BN/YE)

RH rear(coupe)

C485-1 C290d-10, orC4364b-10,then ground

VME12 (BN/WH)

C485-2 C290d-23, orC4364b-3,

then ground

RME12 (BN/BU)

YesFor vehicles with navigation, INSTALL a new audioamplifier. REFER to Audio Amplifier in this section.CLEAR any DTCs present. TEST the system fornormal operation.For vehicles without navigation, GO to C12.



2011 Mustang, 2/2011


C11 CHECK THE SPEAKER CIRCUITS FOR AN OPEN OR SHORT TO GROUND (Continued)(Continued)

SuspectSpeaker

Positive MeterLead

NegativeMeter Lead

Circuit

LH rear quarterpanel

(convertible)

C395-1 C290d-9, orC4364b-12,then ground

VME09 (WH/GN)

C395-2 C290d-22, orC4364b-5,

then ground

RME09 (BN/YE)

RH rearquarter panel(convertible)

C396-1 C290d-10 orC4364b-10 the

ground

VME12 (BN/WH)

C396-2 C290d-23 orC4364b-3,

then ground

RME12 (BN/BU)

• Are the resistances less than 5 ohms between the suspectspeaker and the ACM (vehicles without navigation) or the audioamplifier (vehicles with navigation), and greater than 10,000ohms between the suspect speaker and ground?

C12 CHECK FOR CORRECT ACM OPERATION

• Connect: All Disconnected Connectors.• Disconnect all the ACM connectors.• Check for:




NoThe system is operating correctly at this time. Theconcern may have been caused by a loose or corrodedconnector. CLEAR any DTCs present.

Pinpoint Test D: Poor Quality/Distorted/No Sound From The Door Subwoofer(s)Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.


2011 Mustang, 2/2011

Normal OperationTo enable the amplifiers, the Audio Control Module (ACM) sends voltage through the enable/clip circuit. The circuit acts as both an output (to enable theamplifier) and an input (to detect an overload condition). The voltage sent by the ACM passes through a variable resistor in each amplifier, then to ground.As the amplifier reaches maximum output, the resistance in the variable resistor decreases. This decreases the voltage drop, resulting in the ACM detecting ahigher voltage on the enable/clip circuit. When the voltage reaches the clip threshold, the ACM clips the audio output signal to the amplifier (heard asdistortion) in order to prevent damage to the amplifier and speakers.

The enable/clip status is based on the following voltages, as detected by the ACM:

• Less than 0.4 volt: amplifier disabled

• Between 3.8 and 6.7 volts (nominal): amplifier enabled

• Greater than 8.5 volts: amplifier clipped

An open in the enable/clip circuit causes the speakers powered by that particular amplifier to produce no sound because the enable signal does not reach theaudio amplifier. A short to ground or short to voltage can cause severe distortion to be heard in the speakers.

• DTC B1A05:01 (Speaker #5: General Electrical Failure) — can set when any fault is detected in the subwoofer speaker circuits. This DTC can beeither continuous or on-demand.


• Fuse


• Door subwoofer speaker

• Door subwoofer amplifier

• ACM

PINPOINT TEST D: POOR QUALITY/DISTORTED/NO SOUND FROM THE DOORSUBWOOFER(S)




D1 CHECK THE DOOR SUBWOOFER AMPLIFIER CIRCUIT FOR VOLTAGE

• Ignition OFF.• Disconnect: Left Door Subwoofer Amplifier C2993a (Left Subwoofer

Concern) or Right Door Subwoofer Amplifier C2994a (RightSubwoofer Concern).

• Measure the voltage between the left door subwoofer amplifierC2993a-5, circuit SBB33 (RD), harness side and ground; or betweenthe right front subwoofer amplifier C2994a-5, circuit SBB33 (RD),harness side and ground.


YesGO to D2.

NoVERIFY the SJB fuse 33 (30A) is OK. If OK, REPAIRthe circuit. TEST the system for normal operation. If notOK, REFER to the Wiring Diagrams Manual to identifythe possible causes of the circuit short.

D2 CHECK THE DOOR SUBWOOFER AMPLIFIER GROUND CIRCUIT FOR AN OPEN

• Disconnect: Negative Battery Cable.• Measure the resistance between the left door subwoofer amplifier

C2993a-2, circuit GD115 (BK/GY), harness side and ground; orYesGO to D3.


2011 Mustang, 2/2011

PINPOINT TEST D: POOR QUALITY/DISTORTED/NO SOUND FROM THE DOORSUBWOOFER(S) (Continued)

D2 CHECK THE DOOR SUBWOOFER AMPLIFIER GROUND CIRCUIT FOR AN OPEN (Continued)between the right door subwoofer amplifier C2994a-2, circuit GD115(BK/GY), harness side and ground.



D3 CHECK THE DOOR SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR CORRECT VOLTAGE

• Connect: Negative Battery Cable.• Operate the audio system in radio tuner (AM/FM) mode.• Measure the voltage between the left door subwoofer amplifier

C2993a-1, circuit SME23 (VT/RD), harness side and ground; andbetween the right door subwoofer amplifier C2994a-1, circuit SME23(VT/RD), harness side and ground.

• Is the voltage between 3.8 and 6.7 volts at both amplifiers?

YesGO to D6.

NoIf the voltage is incorrect at one amplifier only, REPAIRthe circuit in question. TEST the system for normaloperation.If the voltage is incorrect at both amplifiers, GO to D4.

D4 CHECK THE DOOR SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C290b.• Ignition ON.• Measure the voltage between the left door subwoofer amplifier

C2993a-1, circuit SME23 (VT/RD), harness side and ground.



NoGO to D5.


2011 Mustang, 2/2011


D5 CHECK THE DOOR SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the left door subwoofer amplifier

C2993a-1, circuit SME23 (VT/RD), harness side and the ACMC290b-4, circuit SME23 (VT/RD), harness side; and between the leftdoor subwoofer amplifier C2993a-1, circuit SME23 (VT/RD), harnessside and ground.

• Is the resistance less than 5 ohms between the left doorsubwoofer amplifier and the ACM, and greater than 10,000 ohmsbetween the left door subwoofer amplifier and ground?

YesGO to D13.


D6 CHECK THE AUDIO SIGNALS TO THE DOOR SUBWOOFER AMPLIFIER

• Operate the audio system in radio tuner (AM/FM) mode.• Measure the AC voltage between the left door subwoofer amplifier

C2993a-7, circuit VME22 (VT/GN), harness side and the left doorsubwoofer amplifier C2993a-8, circuit RME22 (GN/WH), harness side;and between the right door subwoofer amplifier C2994a-7, circuitVME22 (VT/GN), harness side and the right door subwoofer amplifierC2994a-8, circuit RME22 (GN/WH), harness side.

• Is a fluctuating AC voltage present at both amplifiers?

YesGO to D10.

NoIf the voltage is incorrect at one amplifier only, GO toD7 .If the voltage is incorrect at both amplifiers, GO to D8 .

D7 CHECK THE SPEAKER CIRCUITS FOR AN OPEN

NOTE: Carry out this step only for the inoperative subwoofer.

• Ignition OFF.• Disconnect: ACM C290b.• Measure the resistance between the left door subwoofer amplifier

C2993a-7, circuit VME22 (VT/GN), harness side and the ACMC290b-1, circuit VME22 (VT/GN), harness side; or between the rightdoor subwoofer amplifier C2994a-7, circuit VME22 (VT/GN), harnessside and the ACM C290b-1, circuit VME22 (VT/GN), harness side.

YesREPAIR circuit RME22 (GN/WH). TEST the system fornormal operation.

NoREPAIR circuit VME22 (VT/GN). TEST the system fornormal operation.


2011 Mustang, 2/2011


D7 CHECK THE SPEAKER CIRCUITS FOR AN OPEN (Continued)


D8 CHECK THE SPEAKER CIRCUITS FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C290b.• Ignition ON.• Measure the voltage between the left door subwoofer amplifier

C2993a-7, circuit VME22 (VT/GN), harness side and ground; andbetween the left door subwoofer amplifier C2993a-8, circuit RME22(GN/WH), harness side and ground.


YesREPAIR the circuit in question. TEST the system fornormal operation.

NoGO to D9.

D9 CHECK THE SPEAKER CIRCUITS FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the suspect subwoofer amplifier,

harness side and the ACM, harness side; and between the suspectsubwoofer amplifier, harness side and ground as follows:

SuspectSubwoofer

SubwooferAmplifier

Connector-Pin

ACMConnector-

Pin

Circuit

Left door C2993a-7 C290b-1, thenground

VME22 (VT/GN)

C2993a-8 C290b-2, thenground

RME22 (GN/WH)

Right door C2994a-7 C290b-1, thenground

VME22 (VT/GN)

C2994a-8 C290b-2, thenground

RME22 (GN/WH)

YesGO to D13.

NoREPAIR the circuit in question. TEST the system fornormal operation.


2011 Mustang, 2/2011


D9 CHECK THE SPEAKER CIRCUITS FOR AN OPEN OR SHORT TO GROUND (Continued)

• Is the resistance less than 5 ohms between the suspect doorsubwoofer amplifier and the ACM, and greater than 10,000 ohmsbetween the suspect door subwoofer amplifier and ground?

D10 CHECK THE AUDIO CIRCUITS TO THE SUSPECT DOOR SUBWOOFER

• Ignition OFF.• Connect: Left Door Subwoofer Amplifier C2993b and Right Door

Subwoofer Amplifier C2994b.• Disconnect: Left Door Subwoofer C536 (Left Subwoofer Concern) or

Right Door Subwoofer C628 (Right Subwoofer Concern).• Ignition ON.• Operate the audio system in radio tuner (AM/FM) mode.• Measure the AC voltage between the suspect door subwoofer circuits,

harness side as follows:

Suspect Subwoofer Positive Meter Lead Negative MeterLead

Left door C536-1VME74 (BN)

C536-2RME74 (BU/BN)

C536-3VME75 (GY/YE)

C536-4RME75 (VT/WH)

Right door C628-1VME76 (WH/OG)

C628-2RME76 (GY/BU)

C628-3VME77 (WH/VT)

C628-4RME77 (GY/OG)


YesINSTALL a new subwoofer for the suspect subwoofer.REFER to Speaker — Door in this section. TEST thesystem for normal operation.

NoGO to D11.

D11 CHECK THE AUDIO CIRCUITS TO THE SUSPECT DOOR SUBWOOFER FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: Left Door Subwoofer Amplifier C2993b Or Right Door

Subwoofer Amplifier C2994b.• Ignition ON.



2011 Mustang, 2/2011


D11 CHECK THE AUDIO CIRCUITS TO THE SUSPECT DOOR SUBWOOFER FOR A SHORT TO VOLTAGE (Continued)• Measure the voltage between the suspect door subwoofer, harness

side and ground as follows:

Suspect Subwoofer SubwooferConnector-Pin

Circuit

Left door C536-1 VME74 (BN)

C536-2 RME74 (BU/BN)

C536-3 VME75 (GY/YE)

C536-4 RME75 (VT/WH)

Right door C628-1 VME76 (WH/OG)

C628-2 RME76 (GY/BU)

C628-3 VME77 (WH/VT)

C628-4 RME77 (GY/OG)

• Is any voltage present?NoGO to D12.

D12 CHECK THE AUDIO CIRCUITS TO THE SUSPECT DOOR SUBWOOFER FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the suspect door subwoofer,

harness side and the door amplifier, harness side; and between thesuspect door subwoofer, harness side and ground as follows:

SuspectSubwoofer

SubwooferConnector-

Pin

SubwooferAmplifier

Connector-Pin

Circuit

Left door C536-1 C2993b-1 VME74 (BN)

C536-2 C2993b-2 RME74 (BU/BN)

C536-3 C2993b-3 VME75 (GY/YE)

C536-4 C2993b-4 RME75 (VT/WH)

Right door C628-1 C2994b-1 VME76 (WH/OG)

C628-2 C2994b-2 RME76 (GY/BU)

C628-3 C2994b-3 VME77 (WH/VT)

YesINSTALL a new door subwoofer amplifier for thesuspect amplifier. REFER to Subwoofer Amplifier —Door in this section. TEST the system for normaloperation.



2011 Mustang, 2/2011


D12 CHECK THE AUDIO CIRCUITS TO THE SUSPECT DOOR SUBWOOFER FOR AN OPEN OR SHORT TO GROUND(Continued)

(Continued)Suspect

SubwooferSubwooferConnector-

Pin

SubwooferAmplifier

Connector-Pin

Circuit

C628-4 C2994b-4 RME77 (GY/OG)

• Is the resistance less than 5 ohms between the suspect doorsubwoofer and the door subwoofer amplifier, and greater than10,000 ohms between the suspect door subwoofer and ground?

D13 CHECK FOR CORRECT ACM OPERATION

• Disconnect all the ACM connectors.• Check for:





Pinpoint Test E: Poor Quality/Distorted/No Sound From The Luggage Compartment SubwooferRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThe luggage compartment subwoofers are powered by a separate subwoofer amplifier.

To enable the amplifier, the ACM sends voltage through the enable/clip circuit. The circuit acts as both an output (to enable the amplifier) and an input (todetect an overload condition). The voltage sent by the ACM passes through a variable resistor in the amplifier, then to ground. As the amplifier reachesmaximum output, the resistance in the variable resistor decreases. This decreases the voltage drop, resulting in the ACM detecting a higher voltage on theenable/clip circuit. When the voltage reaches the clip threshold, the ACM clips the audio output signal to the amplifier (heard as distortion) in order toprevent damage to the amplifier and speakers.

The enable/clip status is based on the following voltages, as detected by the ACM:

• Less than 0.4 volt: amplifier disabled

• Between 3.8 and 6.7 volts (nominal): amplifier enabled

• Greater than 8.5 volts: amplifier clipped

An open in the enable/clip circuit causes the speakers powered by that particular amplifier to produce no sound because the enable signal does not reach theaudio amplifier. A short to ground or short to voltage can cause severe distortion to be heard in the speakers.

• DTC B1A06:01 (Speaker #6: General Electrical Failure) — can set when any fault is detected in the subwoofer speaker circuit. This DTC can be eithercontinuous or on-demand.



2011 Mustang, 2/2011

• Fuse


• Speaker enclosure

• Luggage compartment subwoofer amplifier

• ACM

PINPOINT TEST E: POOR QUALITY/DISTORTED/NO SOUND FROM THE LUGGAGECOMPARTMENT SUBWOOFER




E1 CHECK THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER FOR VOLTAGE

• Ignition OFF.• Disconnect: Luggage Compartment Subwoofer Amplifier C4109.• Measure the voltage between the luggage compartment subwoofer

amplifier C4109-7, circuit SBB20 (GN/RD), harness side and ground.


YesGO to E2.

NoVERIFY the Battery Junction Box (BJB) fuse 20 (30A)is OK. If OK, REPAIR the circuit. TEST the system fornormal operation. If not OK, REFER to the WiringDiagrams Manual to identify the possible causes of thecircuit short.

E2 CHECK THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER GROUND CIRCUIT FOR CONTINUITY

• Disconnect: Negative Battery Cable.• Measure the resistance between the luggage compartment subwoofer

amplifier C4109-10, circuit GD173 (BK), harness side and ground.


YesGO to E3.


E3 CHECK THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR CORRECT VOLTAGE

• Connect: Negative Battery Cable.• Operate the audio system in radio tuner (AM/FM) mode.• Measure the voltage between the luggage compartment subwoofer

amplifier C4109-1, circuit SME51 (GY/VT), harness side and ground.

YesGO to E6.

NoGO to E4.


2011 Mustang, 2/2011

PINPOINT TEST E: POOR QUALITY/DISTORTED/NO SOUND FROM THE LUGGAGECOMPARTMENT SUBWOOFER (Continued)

E3 CHECK THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR CORRECT VOLTAGE(Continued)


E4 CHECK THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C290b.• Ignition ON.• Measure the voltage between the ACM C290b-8, circuit SME51 (GY/

VT), harness side and ground.



NoGO to E5.

E5 CHECK THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER ENABLE CIRCUIT FOR AN OPEN OR SHORT TOGROUND

• Ignition OFF.• Measure the resistance between the luggage compartment subwoofer

amplifier C4109-1, circuit SME51 (GY/VT), harness side and the ACMC290b-8, circuit SME51 (GY/VT), harness side and ground.

• Is the resistance less than 5 ohms between the luggagecompartment subwoofer amplifier and the ACM, and greater than10,000 ohms between the luggage compartment subwooferamplifier and ground?

YesGO to E9.



2011 Mustang, 2/2011


E6 CHECK THE AUDIO SIGNALS TO THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER

• Operate the audio system in radio tuner (AM/FM) mode.• Measure the AC voltage between the luggage compartment

subwoofer amplifier C4109-3, circuit VME51 (BN/BU), harness sideand the luggage compartment subwoofer amplifier C4109-4, circuitRME51 (WH/BU), harness side.


YesINSTALL a new luggage compartment subwooferamplifier. REFER to Subwoofer Amplifier — LuggageCompartment in this section. CLEAR any DTCspresent. TEST the system for normal operation.

NoGO to E7.

E7 CHECK THE AUDIO SIGNALS TO THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER FOR A SHORT TOVOLTAGE

• Ignition OFF.• Disconnect: ACM C290b.• Ignition ON.• Measure the voltage between the ACM C290b-5, circuit VME51 (BN/

BU), harness side and ground; and between the ACM C290b-6, circuitRME51 (WH/BU), harness side and ground.



NoGO to E8.

E8 CHECK THE AUDIO SIGNALS TO THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER FOR AN OPEN OR SHORTTO GROUND

• Ignition OFF.• Measure the resistance between the luggage compartment subwoofer

amplifier, harness side and the ACM, harness side; and between theluggage compartment subwoofer amplifier, harness side and groundas follows:

Positive Meter Lead Negative MeterLead

Circuit

C4109-3 C290b-5, thenground

VME51 (BN/BU)

C4109-4 C290b-6, thenground

RME51 (WH/BU)

YesGO to E9.



2011 Mustang, 2/2011


E8 CHECK THE AUDIO SIGNALS TO THE LUGGAGE COMPARTMENT SUBWOOFER AMPLIFIER FOR AN OPEN OR SHORTTO GROUND (Continued)

• Is the resistance less than 5 ohms between the luggagecompartment subwoofer amplifier and the ACM, and greater than10,000 ohms between the luggage compartment subwooferamplifier and ground?

E9 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test F: Poor Quality/Distorted/No Sound From All SpeakersRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationWhen the ignition is in the START position, voltage is supplied to the Audio Control Module (ACM) through the START sense circuit. When the ACMreceives this voltage, it mutes the speaker output.


• Fuse


• ACM

PINPOINT TEST F: POOR QUALITY/DISTORTED/NO SOUND FROM ALL SPEAKERSNOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.


F1 CHECK THE START SENSE CIRCUIT FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C290d.• Ignition ON.• Measure the voltage between the ACM C290d-15, circuit CBP28 (GY/



NoGO to F2.


2011 Mustang, 2/2011

PINPOINT TEST F: POOR QUALITY/DISTORTED/NO SOUND FROM ALL SPEAKERS(Continued)


F1 CHECK THE START SENSE CIRCUIT FOR A SHORT TO VOLTAGE (Continued)


F2 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test G: Poor Quality/Distorted/No Sound — SYNC SystemRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThe Accessory Protocol Interface Module (APIM) sends left and right channel analog audio signals to the Audio Control Module (ACM). This includesinputs from the Universal Serial Bus (USB) port, the audio input jack, and a Bluetooth media device.



• APIM

• ACM

PINPOINT TEST G: POOR QUALITY/DISTORTED/NO SOUND — SYNC SYSTEMNOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.


G1 VERIFY THE OPERATION OF THE SYNC SYSTEM AUDIO SOURCES

• Connect: Multi-Media Interface Tester.• Using the Multi-Media Interface Tester, test the audio output for the

audio input jack, USB port, and Bluetooth connection.• Is there poor quality/distorted/no sound from each SYNC audio

source?

YesGO to G2.

NoIf the concern is only with some (but not all) of theaudio sources, GO to Symptom Chart — SYNCSystem to diagnose the observed symptom.If all audio sources operate correctly, the concern iswith the customer device.

G2 CHECK THE CIRCUITS FROM THE APIM FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C290a.• Disconnect: APIM C2383.



2011 Mustang, 2/2011

PINPOINT TEST G: POOR QUALITY/DISTORTED/NO SOUND — SYNC SYSTEM (Continued)G2 CHECK THE CIRCUITS FROM THE APIM FOR A SHORT TO VOLTAGE (Continued)

• Measure the voltage between the APIM, harness side and ground asfollows:

Connector-Pin Circuit

C2383-23 VME53 (VT/GN)

C2383-24 RME53 (BN/WH)

C2383-25 VME52 (BU)

C2383-26 RME52 (GY/OG)

• Is any voltage present?YesGO to G3.

G3 CHECK THE CIRCUITS FROM THE APIM FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the ACM, harness side, and the

APIM, harness side; and between the ACM, harness side and groundas follows:


Circuit

C290a-9 C2383-23, thenground

VME53 (VT/GN)


RME53 (BN/WH)


VME52 (BU)


RME52 (GY/OG)

• Is the resistance less than 5 ohms between the ACM and theAPIM, and greater than 10,000 ohms between the ACM andground?


NoGO to G4.


2011 Mustang, 2/2011

PINPOINT TEST G: POOR QUALITY/DISTORTED/NO SOUND — SYNC SYSTEM (Continued)G4 CHECK FOR CORRECT APIM OPERATION

• Connect: All Disconnected Connectors.• Disconnect the APIM connector.• Check for:


• Connect the APIM connector and make sure it seats correctly.• Wait 2 minutes for the APIM to re-initalize.• Operate the system and verify the concern is still present.• Is the concern still present?

YesINSTALL a new APIM. REFER to Accessory ProtocolInterface Module (APIM) in this section. TEST thesystem for normal operation. If the concern is stillpresent, GO to G5.


G5 CHECK FOR CORRECT ACM OPERATION



• Connect all the ACM connectors and make sure they seat correctly.• Operate the system and verify the concern is still present.• Is the concern still present?



Pinpoint Test H: The Satellite Radio Is Inoperative/Does Not Operate CorrectlyRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationDigital signals are received by the satellite radio antenna and sent to the Audio Control Module (ACM) through the satellite radio antenna cable. The satelliteradio receiver is internal to the ACM.

When a satellite radio subscription is activated, the Electronic Serial Number (ESN) of the built-in satellite radio receiver is associated with the VehicleIdentification Number (VIN). As a result, the ACM cannot be swapped from one vehicle to another.

When there is an open in the satellite radio antenna circuit, there is no satellite audio. The audio system display indicates a satellite radio antenna concernwhen the audio system is operated in satellite radio mode. To diagnose an open in the satellite radio antenna circuit, GO to Pinpoint Test B.

• DTC U2014:96 (Control Module Hardware: Component Internal Failure) set by the ACM when a fault is detected in the internal satellite radioreceiver. This results in complete loss of satellite radio functionality.


• Subscription status

• ACM

PINPOINT TEST H: THE SATELLITE RADIO IS INOPERATIVE/DOES NOT OPERATECORRECTLY


H1 VERIFY AN ACTIVE SUBSCRIPTION

• Operate the audio system in satellite radio mode and observe theFDIM display.

• Does the display indicate the subscription has expired?

YesThe subscription has expired. INFORM the customer tocontact Sirius to re-activate the subscription.

NoFor vehicles with navigation, GO to H2.For all others, GO to H3.

H2 CHECK THE ACM DTCs

• Retrieve the ACM DTCs.• Is DTC U2014:96 present?

YesGO to H4.

NoGO to H3.

H3 CHECK THE SATELLITE SIGNAL PID (SAT_SIG_STR)


2011 Mustang, 2/2011

PINPOINT TEST H: THE SATELLITE RADIO IS INOPERATIVE/DOES NOT OPERATECORRECTLY (Continued)

H3 CHECK THE SATELLITE SIGNAL PID (SAT_SIG_STR) (Continued)


• Monitor the ACM PID (SAT_SIG_STR).• Does the PID indicate "No Signal"?

YesGO to Pinpoint Test B.

NoGO to H4.

H4 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test I: The Audio System Does Not Operate Correctly From The Front Controls Interface Module (FCIM)

Normal OperationWhen a button is pressed on the Front Controls Interface Module (FCIM), a signal is broadcast over the Medium Speed Controller Area Network (MS-CAN)to the modules in the audio system. The FCIM is also the customer interface with the HVAC module.

If the FCIM can no longer communicate on the MS-CAN (due to loss of power, ground, etc.), the audio system remains in the operating state it was in priorto the failure. The steering wheel controls continue to operate.

• DTC U2013:63 (Switch Pack: Circuit / Component Protection Time-Out) — set by the FCIM if a switch is detected as active for greater than 3 secondsduring the self-test, or for greater than 2 minutes during normal operation. When this occurs, the FCIM disables the switch until it detects it as nolonger active.


• Communication network concern

• FCIM

PINPOINT TEST I: THE AUDIO SYSTEM DOES NOT OPERATE CORRECTLY FROM THE FCIMTest Step Result / Action to Take

I1 RETRIEVE ALL CONTINUOUS DTCs

• Using the scan tool, retrieve all continuous DTCs.• Is DTC U0184:00 or DTC U0255:00 present in any audio system

module?

YesREFER to DTC Charts in this section.

NoGO to I2.

I2 CHECK FOR DTC U2013:63

• Clear the FCIM DTCs.• Repeat the FCIM self-test, making sure no FCIM buttons are pressed

during the test.• Is DTC U2013:63 present?

YesINSTALL a new FCIM. REFER to Front ControlsInterface Module (FCIM) in this section. TEST thesystem for normal operation.

NoGO to I3.

I3 CHECK FOR CORRECT FCIM OPERATION

• Disconnect the FCIM connector.• Check for:


• Connect the FCIM connector and make sure it seats correctly.• Operate the system and determine if the concern is still present.• Is the concern still present?




2011 Mustang, 2/2011

Pinpoint Test J: An Individual Front Display Interface Module (FDIM) Display Is Inoperative — Vehicles Without Navigation

Normal OperationThe Front Display Interface Module (FDIM) receives inputs via the Medium Speed Controller Area Network (MS-CAN) from the following modules:

• Audio Control Module (ACM): audio system information

• Instrument Panel Cluster (IPC): compass heading information

• Accessory Protocol Interface Module (APIM): SYNC system information

• HVAC module: climate control system information

If the FDIM loses the signal from any of these modules, only that specific display is inoperative.

For the compass display, this pinpoint test is intended to diagnose a concern of the compass display being blank. For any other concerns with the compassdisplay, including the compass being inaccurate, refer to Section 419-11.



• FDIM

PINPOINT TEST J: AN INDIVIDUAL FDIM DISPLAY IS INOPERATIVE — VEHICLES WITHOUTNAVIGATION


J1 OBSERVE THE FDIM DISPLAY

• Turn the audio system on and observe the FDIM screen.• Is the FDIM display completely inoperative?

YesGO to Pinpoint Test M.

NoGO to J2.

J2 CHECK FOR LOST COMMUNICATION DTCs SET IN THE FDIM

• Using the scan tool, retrieve all continuous DTCs.• Is DTC U0155, U0184, or U0197 present in the FDIM?


NoGO to J3.

J3 CHECK THE FDIM DISPLAY SEGMENTS

• Carry out the Audio Display Test. Refer to Audio Control Module(ACM) Self-Diagnostic Mode in this section.

• Do all of the FDIM segments illuminate?

YesGO to J4.

NoGO to J5.

J4 OBSERVE THE SPECIFIC INOPERATIVE DISPLAY

• Observe the inoperative FDIM display while carrying out the indicateddiagnostic method as follows:

Inoperative Display Diagnostic Method Expected Results

Compass Drive the vehicle inan open area while

observing thedisplay.

The compass displayilluminates,indicating a

directional headingor a calibration error.

Audio system Turn the audiosystem on, press theAM/FM button, andadjust the volume.

The FDIM displayupdates to show the

change in audiosetting.

SYNC system (ifequipped)

Turn the audiosystem on, press the

phone button, andobserve the display.

The FDIM displayshows information

relating to the phone.

YesThe system is operating correctly at this time. INFORMthe customer on the operation of the FDIM display.

NoIf the compass heading is inaccurate or indicates acalibration error, REFER to Section 419-11 to diagnosethe compass.For all other concerns, GO to J5.


2011 Mustang, 2/2011

PINPOINT TEST J: AN INDIVIDUAL FDIM DISPLAY IS INOPERATIVE — VEHICLES WITHOUTNAVIGATION (Continued)

J4 OBSERVE THE SPECIFIC INOPERATIVE DISPLAY (Continued)(Continued)


Climate controlsystem

Turn the climatecontrol system on,

adjust the fan to highspeed, and set the

temperature tovarious settings.


change in climatecontrol setting.

• Does the inoperative display confirm the expected results?

J5 CHECK FOR CORRECT FDIM OPERATION

• Ignition OFF.• Disconnect the FDIM connector.• Check for:


• Connect the FDIM connector and make sure it seats correctly.• Operate the system and determine if the concern is still present.• Is the concern still present?

YesINSTALL a new FDIM. REFER to Front DisplayInterface Module (FDIM) in this section. TEST thesystem for normal operation.


Pinpoint Test K: An Individual FDIM Display Is Inoperative — Vehicles With Navigation

Normal OperationThe Front Display Interface Module (FDIM) display provides information based on the video signal from the Audio Control Module (ACM). In addition tothe information that the ACM controls for the navigation and audio system, the ACM receives inputs via the Medium Speed Controller Area Network (MS-CAN) from the following modules:

• Accessory Protocol Interface Module (APIM): SYNC system information (if equipped)

• HVAC module: climate control system information

If the ACM loses the signal from any of these modules, only that specific display becomes inoperative.



• FDIM

• ACM

PINPOINT TEST K: AN INDIVIDUAL Front Display Interface Module (FDIM) DISPLAY ISINOPERATIVE — VEHICLES WITH NAVIGATION


K1 OBSERVE THE FDIM DISPLAY


YesGO to Pinpoint Test N.

NoGO to K2.

K2 CHECK THE FDIM DISPLAY SEGMENTS

• Carry out the Audio Display Test. Refer to Audio Control Module(ACM) Self-Diagnostic Mode in this section.

• Do all of the FDIM segments illuminate?

YesGO to K3.

NoGO to K5.

K3 OBSERVE THE SPECIFIC INOPERATIVE DISPLAY

• Observe the inoperative FDIM display while carrying out the indicateddiagnostic method as follows:

YesThe system is operating correctly at this time. INFORMthe customer on the operation of the FDIM displays.


2011 Mustang, 2/2011

PINPOINT TEST K: AN INDIVIDUAL Front Display Interface Module (FDIM) DISPLAY ISINOPERATIVE — VEHICLES WITH NAVIGATION (Continued)

K3 OBSERVE THE SPECIFIC INOPERATIVE DISPLAY (Continued)


Audio system Turn the audiosystem on, press theAM/FM button, andadjust the volume.


change in audiosetting.

SYNC system (ifequipped)

Turn the audiosystem on, press the

phone button, andobserve the display.

The FDIM displayshows information

relating to the phone.

Climate controlsystem

Turn the climatecontrol system on,

adjust the fan to highspeed, and set the

temperature tovarious settings.


change in climatecontrol setting.

• Does the inoperative display confirm the expected results?NoGO to K4.

K4 CHECK FOR LOST COMMUNICATION DTCs

• Ignition ON.• Clear continuous DTCs from all modules.• Ignition OFF.• Ignition ON.• Wait at least 10 seconds.• Retrieve all continuous DTCs (from all modules).• Is DTC U0164, U0184, or U0197 (if equipped with the SYNC

system) present in any module?


NoGO to K5.

K5 CHECK FOR CORRECT FDIM OPERATION




YesINSTALL a new FDIM. REFER to Front DisplayInterface Module (FDIM) in this section. TEST thesystem for normal operation. If the concern is stillpresent, GO to K6.


K6 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test L: The Audio System Does Not Operate Correctly From The Front Display Interface Module (FDIM) — Vehicles WithNavigationRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThe Front Display Interface Module (FDIM) touchscreen sends a voltage signal to the Audio Control Module (ACM) when a touch sector is pressed. TheACM then takes the appropriate action, which can be a change in the audio system setting or broadcasting the information to the appropriate module throughthe Medium Speed Controller Area Network (MS-CAN).

• DTC U0162:00 (Lost Communication With Navigation Display Module: No Sub Type Information) — set by the ACM if it does not detect the FDIMfor greater than 5 seconds with the ignition in the RUN position. When this occurs, the touchscreen controls are inoperative and the FDIM may notdisplay correct (if any) information.


2011 Mustang, 2/2011



• FDIM

• ACM

PINPOINT TEST L: THE AUDIO SYSTEM DOES NOT OPERATE CORRECTLY FROM THE FDIM— VEHICLES WITH NAVIGATION



L1 OBSERVE THE FDIM DISPLAY


YesGO to Pinpoint Test N.

NoGO to L2.

L2 CHECK FOR AUDIO SYSTEM OPERATION FROM THE FCIM

• Carry out various audio system functions using the Front ControlsInterface Module (FCIM).

• Does the audio system operate correctly from the FCIM?

YesGO to L3.

NoGO to Pinpoint Test I.

L3 CHECK THE TOUCHSCREEN TRANSMIT AND RECEIVE CIRCUITS FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: FDIM C2123.• Disconnect: ACM C290c.• Ignition ON.• Measure the voltage between the FDIM C2123-4, circuit CMN26 (BU/

OG), harness side and ground; and between the FDIM C2123-10,circuit CMN24 (GY/VT), harness side and ground.



NoGO to L4.

L4 CHECK THE TOUCHSCREEN TRANSMIT AND RECEIVE CIRCUITS FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the FDIM C2123-4, circuit CMN26

(BU/OG), harness side and the ACM C290c-10, circuit CMN26 (BU/OG), harness side; and between the FDIM C2123-4, circuit CMN26(BU/OG), harness side and ground.

YesGO to L5.



2011 Mustang, 2/2011

PINPOINT TEST L: THE AUDIO SYSTEM DOES NOT OPERATE CORRECTLY FROM THE FDIM— VEHICLES WITH NAVIGATION (Continued)

L4 CHECK THE TOUCHSCREEN TRANSMIT AND RECEIVE CIRCUITS FOR AN OPEN OR SHORT TO GROUND (Continued)

• Measure the resistance between the FDIM C2123-10, circuit CMN24(GY/VT), harness side and the ACM C290c-5, circuit CMN24 (GY/VT), harness side; and between the FDIM C2123-10, circuit CMN24(GY/VT), harness side and ground.

• Is the resistance less than 5 ohms between the FDIM and theACM, and greater than 10,000 ohms between the FDIM andground?

L5 ISOLATE THE FDIM

• Connect: ACM C290b.• Install a new FDIM. Refer to Front Display Interface Module (FDIM) in

this section.• Ignition ON.• Attempt various commands from the FDIM touchscreen.• Does the system operate correctly?

YesThe cause of the concern was an inoperative FDIM.The system is now operating correctly.

NoGO to L6.

L6 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test M: The Front Display Interface Module (FDIM) Is Completely Inoperative — Vehicles Without NavigationRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThe Front Display Interface Module (FDIM) receives power at all times. The ignition switch position message is broadcast to the FDIM by the SmartJunction Box (SJB) via the Medium Speed Controller Area Network (MS-CAN).

Information from the audio system, the climate control system, the SYNC system, and the compass heading are shown on the FDIM display screen. If onlyone of these displays has concern, GO to Pinpoint Test J.


2011 Mustang, 2/2011



• FDIM

PINPOINT TEST M: THE FDIM IS COMPLETELY INOPERATIVE — VEHICLES WITHOUTNAVIGATION


M1 CHECK FOR SCAN TOOL COMMUNICATION WITH THE FDIM

• Ignition ON.• Carry out the network test using the scan tool.• Does the scan tool communicate with the FDIM?

YesGO to M2.

NoREFER to Section 418-00.

M2 CHECK FOR CORRECT FDIM OPERATION






Pinpoint Test N: The Front Display Interface Module (FDIM) Is Completely Inoperative — Vehicles With NavigationRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThe Audio Control Module (ACM) enables the Front Display Interface Module (FDIM) by sending voltage through the enable circuit.

Video display information is sent to the FDIM from the ACM through a dedicated video cable. The video cable is only serviced by overlaying a newcomponent.

If there is a fault in the video cable, the FDIM may illuminate very dimly and have a greyish appearance. This is because the enable circuit is still active andenables the illumination, but no video signal reaches the FDIM.

If the vehicle is equipped with a rear view camera, the video feed from the camera is hardwired to the FDIM.

For all other display information, including the climate control and SYNC system displays, messages are sent to the ACM via the Medium Speed ControllerArea Network (MS-CAN). The ACM then alters the video feed to the FDIM based on the messages it receives.


• Fuse


• FDIM

• ACM

PINPOINT TEST N: THE FDIM IS COMPLETELY INOPERATIVE — VEHICLES WITH NAVIGATIONNOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.



N1 CHECK THE FDIM VOLTAGE SUPPLY

• Ignition OFF.• Disconnect: FDIM C2123.• Measure the voltage between the FDIM C2123-1, circuit SBP14 (BN/

RD), harness side and ground.

YesGO to N2.

NoVERIFY the Smart Junction Box (SJB) fuse 14 (10A) isOK. If OK, REPAIR the circuit. TEST the system fornormal operation. If not OK, REFER to the Wiring


2011 Mustang, 2/2011

PINPOINT TEST N: THE FDIM IS COMPLETELY INOPERATIVE — VEHICLES WITH NAVIGATION(Continued)


N1 CHECK THE FDIM VOLTAGE SUPPLY (Continued)

• Is the voltage greater than 10 volts?Diagrams Manual to identify the possible causes of thecircuit short.

N2 CHECK THE FDIM GROUND CIRCUIT FOR CONTINUITY

• Disconnect: Negative Battery Cable.• Measure the resistance between the FDIM C2123-7, circuit GD115

(BK/GY), harness side and ground.


YesGO to N3.


N3 CHECK THE FDIM ENABLE CIRCUIT FOR CORRECT VOLTAGE

• Connect: Negative Battery Cable.• Ignition ON.• Turn the audio system on using the power button on the Front

Controls Interface Module (FCIM).• Measure the voltage between the FDIM C2123-5, circuit CMN23 (WH/

BU), harness side and ground.


YesGO to N6.

NoGO to N4.

N4 CHECK THE FDIM ENABLE CIRCUIT FOR A SHORT TO VOLTAGE


2011 Mustang, 2/2011


N4 CHECK THE FDIM ENABLE CIRCUIT FOR A SHORT TO VOLTAGE (Continued)

• Ignition OFF.• Disconnect: ACM C290c.• Ignition ON.• Measure the voltage between the FDIM C2123-5, circuit CMN23 (WH/

BU), harness side and ground.



NoGO to N5.

N5 CHECK THE FDIM ENABLE CIRCUIT FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the FDIM C2123-5, circuit CMN23

(WH/BU), harness side and the ACM C290c-4, circuit CMN23 (WH/BU), harness side; and between the FDIM C2123-5, circuit CMN23(WH/BU), harness side and ground.


YesGO to N6.


N6 ISOLATE THE VIDEO CABLE

• Connect: ACM C290c.• Substitute each video cable one at a time by routing a new

component. Do not remove the original antenna cable at this time.• Connect: FDIM C2123.• Ignition ON.• Operate the audio system and observe the FDIM screen.• Does the system operate correctly?

YesINSTALL a new video cable for the inoperative cable.REFER to Video Cable in this section.

NoGO to N7.

N7 ISOLATE THE FDIM

• Install a new FDIM. Refer to Front Display Interface Module (FDIM) inthis section.

• Ignition ON.• Operate the audio system and observe the FDIM screen.• Does the system operate correctly?


NoGO to N8.

N8 CHECK FOR CORRECT ACM OPERATION


2011 Mustang, 2/2011


N8 CHECK FOR CORRECT ACM OPERATION (Continued)






Pinpoint Test O: The Front Display Interface Module (FDIM) Does Not Display DVD Video Played From The Audio Control Module(ACM) — Vehicles With NavigationRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationVideo from a DVD played in the Audio Control Module (ACM) is transmitted to the Front Display Interface Module (FDIM) through dedicated videocircuits. This video feed is separate from all other video sources, so it is possible for the FDIM to operate correctly until a DVD video is played.

DVD video playback through the ACM is only enabled when the vehicle is in PARK. In all other gears, only the DVD audio is played. This is normaloperation.



• FDIM

• ACM

PINPOINT TEST O: THE FDIM DOES NOT DISPLAY DVD VIDEO PLAYED FROM THE ACM —VEHICLES WITH NAVIGATION



O1 CHECK THE FDIM VIDEO FEED CIRCUITS FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C240c.• Disconnect: FDIM C2123.• Ignition ON.• Measure the voltage between the FDIM C2123-6, circuit VMN20 (BN/

VT), harness side and ground; and between the FDIM C2123-12,circuit RMN20 (WH/GN), harness side and ground.



NoGO to O2.

O2 CHECK THE FDIM VIDEO FEED CIRCUITS FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the FDIM C2123-6, circuit VMN20

(BN/VT), harness side and the ACM C290c-3, circuit VMN20 (BN/VT),



2011 Mustang, 2/2011

PINPOINT TEST O: THE FDIM DOES NOT DISPLAY DVD VIDEO PLAYED FROM THE ACM —VEHICLES WITH NAVIGATION (Continued)

O2 CHECK THE FDIM VIDEO FEED CIRCUITS FOR AN OPEN OR SHORT TO GROUND (Continued)harness side; and between the FDIM C2123-6, circuit VMN20 (BN/VT), harness side and ground.

• Measure the resistance between the FDIM C2123-12, circuit RMN20(WH/GN), harness side and the ACM C290c-8, circuit RMN20 (WH/GN), harness side; and between the FDIM C2123-12, circuit RMN20(WH/GN), harness side and ground.


YesGO to O3.

O3 ISOLATE THE FDIM

• Connect: ACM C290c.• Install a new FDIM. Refer to Front Display Interface Module (FDIM) in

this section.• Ignition ON.• Operate the audio system and observe the FDIM screen.• Does the system operate correctly?


NoGO to O4.

O4 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test P: The Steering Wheel Controls Are Inoperative/Do Not Operate CorrectlyRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThere are 3 different steering wheel controls configurations:

• Without the SYNC system


2011 Mustang, 2/2011

— VOL-, VOL+, SEEK-, SEEK+, MEDIA

— All switches are wired to the Audio Control Module (ACM)

• SYNC system without navigation— VOL-, VOL+, SEEK-, SEEK+, MEDIA, PHONE, OK

— The VOL-, VOL+, SEEK-, and SEEK+ switches are wired to the ACM. The remaining switches are wired to the Accessory Protocol InterfaceModule (APIM).

• SYNC system with navigation— VOL-, VOL+, SEEK-, SEEK+, VOICE, MEDIA, PHONE

— All switches are wired to the ACM

Voltage is sent from the ACM (or APIM) to the steering wheel controls, and the same module grounds the return circuit. The VOL-, VOL+, SEEK-, andSEEK+ switches share signal and return circuits, while the VOICE, MEDIA, PHONE and OK switches share a separate set of signal and return circuits.

For all configurations, when a switch is pressed, the voltage is routed through a specific resistor value for each function. The ACM (or APIM) then uses thereference voltage to determine which control input function has been selected.

DTC Description Fault Trigger Conditions

• B11BA:1C — Steering Wheel Audio Switch Pack: Circuit VoltageOut of Range

Set by the ACM when the reference voltage to the steering wheel controls isout-of-range. This can be caused by a number of different failures on thesteering wheel controls circuit except for a stuck switch or a short to groundin circuit RME24 (BU/WH). This DTC applies to the VOL-, VOL+,SEEK-, SEEK+, and MEDIA switches.

• B11BA:63 — Steering Wheel Audio Switch Pack: Circuit /Component Protection Time-Out

Set by the ACM when a steering wheel control switch is detected as activefor more than 120 seconds during normal operation, or for more than 3seconds during the self-test. A short to ground on circuit VME14 (GY/YE)does not set this DTC, as the reference voltage falls out-of-range, resultingin DTC B11BA:1C being set. This DTC applies to the VOL-, VOL+,SEEK-, SEEK+, and MEDIA switches.

• B1201:1C — Steering Wheel Audio Switch Pack 2: Circuit VoltageOut of Range (ACM)

Set by the navigation ACM when the reference voltage to the steering wheelcontrols is out-of-range. This can be caused by a number of differentfailures on the steering wheel controls circuit except for a stuck switch or ashort to ground in circuit RME24 (BU/WH). This DTC applies to theVOICE and PHONE switches.

• B1201:1C — Steering Wheel Audio Switch Pack 2: Circuit VoltageOut of Range (APIM)

Set by the APIM when the reference voltage to the steering wheel controlsis out-of-range. This can be caused by a number of different failures on thesteering wheel controls circuit except for a stuck switch or a short to groundin circuit RME24 (BU/WH). This DTC applies to vehicles withoutnavigation only.

• B1201:63 — Steering Wheel Audio Switch Pack 2: Circuit /Component Protection Time-Out (ACM)

Set by the navigation ACM when a steering wheel control switch is detectedas active for more than 120 seconds during normal operation, or for morethan 3 seconds during the self-test. A short to ground on circuit VME54(BU/OG) does not set this DTC, as the reference voltage falls out-of-range,resulting in DTC B1201:1C being set. This DTC applies to the VOICE andPHONE switches.

• B1201:63 — Steering Wheel Audio Switch Pack 2: Circuit /Component Protection Time-Out (APIM)

Set by the APIM when a steering wheel control switch is detected as activefor more than 120 seconds during normal operation, or for more than 3seconds during the self-test. A short to ground on circuit VME54 (BU/OG)does not set this DTC, as the reference voltage falls out-of-range, resultingin DTC B1201:1C being set. This DTC applies to vehicles withoutnavigation only.



• Clockspring

• Steering wheel controls

• ACM

• APIM (without navigation only)

PINPOINT TEST P: THE STEERING WHEEL CONTROLS ARE INOPERATIVE/DO NOT OPERATECORRECTLY



2011 Mustang, 2/2011

PINPOINT TEST P: THE STEERING WHEEL CONTROLS ARE INOPERATIVE/DO NOT OPERATECORRECTLY (Continued)


P1 DETERMINE THE INOPERATIVE STEERING WHEEL CONTROLS

• Determine which steering wheel controls are inoperative by pressingeach steering wheel control switch individually while operating theaudio system in various modes (AM/FM, SYNC (if equipped), etc.).

• Is the concern with the VOL-, VOL+, SEEK-, SEEK+, or MEDIAswitch?

YesGO to P2.

NoGO to P3.

P2 MONITOR THE STEERING WHEEL CONTROLS PIDs (EXCEPT NAVIGATION/SYNC SWITCHES)


• Monitor the steering wheel controls PIDs while pressing each steeringwheel controls button as follows:

Steering Wheel ControlsSwitch

PID

VOL- SW_VOLDOWN

VOL+ SW_VOLUP

SEEK- SW_SEEKMINUS

SEEK+ SW_SEEKPLUS

MEDIA SW_MODE• Do the PID values agree with the switch positions?

YesGO to P9.

NoIf only one PID value is incorrect or the PID valuealways reads one particular switch position, INSTALLnew steering wheel controls. REFER toSteering WheelControls in this section. CLEAR any DTCs present.TEST the system for normal operation.Otherwise, GO to P4.

P3 MONITOR THE STEERING WHEEL CONTROLS PIDs (NAVIGATION/SYNC SWITCHES)

• Enter the following diagnostic mode on the scan tool: ACMDataLogger (With Navigation) or APIM DataLogger (WithoutNavigation).

• Monitor the steering wheel controls PIDs while pressing each steeringwheel controls button as follows:

ACM PIDs


ACM PID

VOICE SW_VOICE

PHONE SW_PHONE

APIM PIDs


APIM PID

VOICE SCS_VOICE

PHONE SCS_PHONE

OK SCS_OK• Do the PID values agree with the switch positions?

YesFor vehicles with navigation, GO to P9.For vehicles without navigation, GO to P10.

NoIf only one PID value is incorrect or the PID valuealways reads one particular switch position, INSTALLnew steering wheel controls. REFER to Steering WheelControls in this section. CLEAR any DTCs present.TEST the system for normal operation.Otherwise, GO to P4.

P4 CHECK THE REFERENCE VOLTAGE CIRCUIT TO THE CLOCKSPRING FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: Clockspring C2274.• Disconnect: ACM C290d or APIM C2383.• Ignition ON.• For a concern with the VOL-, VOL+, SEEK-, SEEK+, or MEDIA

switches, measure the voltage between the clockspring C2274-13,circuit VME14 (GY/YE), harness side and ground.


NoGO to P5.


2011 Mustang, 2/2011


P4 CHECK THE REFERENCE VOLTAGE CIRCUIT TO THE CLOCKSPRING FOR A SHORT TO VOLTAGE (Continued)

• For a concern with the VOICE, PHONE, or OK switches, measure thevoltage between the clockspring C2274-6, circuit VME54 (BU/OG),harness side and ground.


P5 CHECK THE CIRCUITS TO THE CLOCKSPRING FOR AN OPEN OR SHORT TO GROUND

NOTE: Circuits REM14 (BN/GN) and RME54 (WH/VT) do not need to be checked for ashort to ground.

• Ignition OFF.• Measure the resistance between the clockspring, harness side and

the ACM (or APIM), harness side; and between the clockspring,harness side and ground as follows:

SuspectSwitch

Positive MeterLead

NegativeMeter Lead

Circuit

VOL-, VOL+,SEEK-, SEEK+, or MEDIA

C2274-13 C290d-18,then ground

VME14 (GY/YE)

C2274-12 C290d-19,then ground

RME14 (BN/GN)

VOICE,PHONE, or OK

C2274-6 C290d-17 (withnavigation) or

C2383-14(without

navigation),then ground

VME54 (BU/OG)

C2274-4 C290d-16 (withnavigation) or

C2383-15

RME54 (WH/VT)

YesGO to P6.



2011 Mustang, 2/2011


P5 CHECK THE CIRCUITS TO THE CLOCKSPRING FOR AN OPEN OR SHORT TO GROUND (Continued)(Continued)

SuspectSwitch

Positive MeterLead

NegativeMeter Lead

Circuit

(withoutnavigation),then ground

• Is the resistance less than 5 ohms between the clockspring andthe ACM (or APIM), and greater than 10,000 ohms between theclockspring and ground?

P6 CHECK THE REFERENCE VOLTAGE CIRCUIT TO THE STEERING WHEEL CONTROLS FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: Upper Clockspring Connector.• Disconnect: Steering Wheel Controls Connector.• Ignition ON.• For a concern with the VOL-, VOL+, SEEK-, SEEK+, or MEDIA

buttons, measure the voltage between the upper clockspringconnector pin 10, circuit VME14 (GY/YE), harness side and ground.

YesREPAIR the circuit. CLEAR any DTCs present. TESTthe system for normal operation.

NoGO to P7.


2011 Mustang, 2/2011


P6 CHECK THE REFERENCE VOLTAGE CIRCUIT TO THE STEERING WHEEL CONTROLS FOR A SHORT TO VOLTAGE(Continued)• For a concern with the VOICE, PHONE, or OK buttons, measure the

voltage between the upper clockspring connector pin 3, circuit VME54(BU/OG), harness side and ground.


P7 CHECK THE CIRCUITS TO THE STEERING WHEEL CONTROLS FOR AN OPEN OR SHORT TO GROUND

NOTE: Circuits RME14 (BN/GN) and RME54 (WH/VT) do not need to be checked for ashort to ground.

• Ignition OFF.• Measure the resistance between the upper clockspring connector,

harness side and the steering wheel controls, harness side; andbetween the upper clockspring connector, harness side and groundas follows:

InoperativeSwitch

Positive MeterLead

NegativeMeter Lead

Circuit

VOL-, VOL+,SEEK-, SEEK

+, MEDIA

Upperclockspring

connector pin10

Steering wheelcontrols

connector pin2, then ground

VME14 (GY/YE)

Upperclockspring

connector pin11



RME14 (BN/GN)

VOICE,PHONE, OK

Upperclockspring

connector pin 3



VME54 (BU/OG)

Upperclockspring

connector pin 5



RME54 (WH/VT)

YesGO to P8.

NoINSTALL a new steering wheel. REFER to Section211-04. CLEAR any DTCs present. TEST the systemfor normal operation.


2011 Mustang, 2/2011


P7 CHECK THE CIRCUITS TO THE STEERING WHEEL CONTROLS FOR AN OPEN OR SHORT TO GROUND (Continued)

• Is the resistance less than 5 ohms between the upperclockspring connector and the steering wheel controls, andgreater than 10,000 ohms between the upper clockspringconnector and ground?

P8 CHECK THE REFERENCE VOLTAGE CIRCUITS TO THE CLOCKSPRING

• Ignition OFF.• Disconnect: Clockspring C2274.• Ignition ON.• For vehicles without the SYNC system, measure the voltage between

the lower clockspring C2274-13, circuit VME14 (GY/YE) andC2274-12, circuit RME14 (BN/GN).

• For vehicles with the SYNC system, measure the voltage between thelower clockspring C2274-6, circuit VME54 (BU/OG) and C2274-4,circuit RME54 (WH/VT); and between the lower clockspringC2274-13, circuit VME14 (GY/YE) and C2274-12, circuit RME14 (BN/GN).

• Is the voltage approximately 5 volts?

YesINSTALL a new clockspring. REFER to Section501-20B. CLEAR any DTCs present. TEST the systemfor normal operation.

NoFor vehicles without SYNC, GO to P9.For vehicles with SYNC, GO to P10.

P9 CHECK FOR CORRECT ACM OPERATION


2011 Mustang, 2/2011


P9 CHECK FOR CORRECT ACM OPERATION (Continued)

• Ignition OFF.• Connect: Any Disconnected Connectors.• Disconnect all the ACM connectors.• Check for:





P10 CHECK FOR CORRECT APIM OPERATION

• Ignition OFF.• Connect: All Disconnected Connectors.• Disconnect the APIM connector.• Check for:



YesINSTALL a new APIM. REFER to Accessory ProtocolInterface Module (APIM) in this section. TEST thesystem for normal operation.


Pinpoint Test Q: The Audio Input Jack Is Inoperative/Does Not Operate CorrectlyRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal Operation — Vehicles Without the SYNC SystemAudio signals are sent from the audio input jack to the Audio Control Module (ACM). There are no external power or ground circuits to the audio input jack.

Vehicles With the SYNC SystemAudio signals are sent from the audio input jack to the Accessory Protocol Interface Module (APIM). The signals are then sent to the ACM. There are noexternal power or ground circuits to the audio input jack.

• DTC B1D78:13 (Auxiliary Input: Circuit Open) — sets in continuous memory by the ACM (vehicles without the SYNC system only) when an open isdetected in the audio input jack circuitry for greater than 250 milliseconds.



• Audio input jack

• APIM (vehicles with the SYNC system)

• ACM (vehicles without the SYNC system)

PINPOINT TEST Q: THE AUDIO INPUT JACK IS INOPERATIVE/DOES NOT OPERATECORRECTLY


NOTE: Before carrying out this pinpoint test, make sure the MP3 device is operating correctly.


Q1 CHECK THE AUDIO INPUT JACK AUDIO

• Connect: Multi-Media Interface Tester.• Using the Multi-Media Interface Tester, attempt to play an audio file

using the audio input jack.• Does the file play correctly?

YesThe system is operating correctly at this time. Theconcern may be with the customer device.

NoGO to Q2.

Q2 DETERMINE THE VEHICLE CONTENT


2011 Mustang, 2/2011

PINPOINT TEST Q: THE AUDIO INPUT JACK IS INOPERATIVE/DOES NOT OPERATECORRECTLY (Continued)

Q2 DETERMINE THE VEHICLE CONTENT (Continued)

• Determine if the vehicle is equipped with the SYNC system.• Is the vehicle equipped with the SYNC system?

YesGO to Q3.

NoGO to Q4.

Q3 CHECK THE APIM AUDIO OUTPUT

• Using the Multi-Media Interface Tester, attempt to play an audio fileusing either the Universal Serial Bus (USB) port or Bluetooth.

• Is the audio output OK for the USB port or Bluetooth?

YesGO to Q4.

NoGO to Pinpoint Test G.

Q4 CHECK THE AUDIO INPUT JACK CIRCUITS FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: Audio Input Jack C2362.• Disconnect: ACM C290a (Vehicles Without the SYNC System) or

APIM C2383 (Vehicles With the SYNC System).• Ignition ON.• Measure the voltage between the audio input jack, harness side and

ground as follows:

Positive Meter Lead Negative Meter Lead

C2362-1VME46 (BU/GN)

Ground

C2362-2RME46 (WH/GN)

Ground

C2362-3RME45 (YE/GN)

Ground

C2362-4VME45 (BU)

Ground



NoGO to Q5.

Q5 CHECK THE AUDIO INPUT JACK CIRCUITS FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the audio input jack, harness side

and the ACM (or APIM, if equipped with the SYNC system), harnessside; and between the audio input jack, harness side and ground asfollows:

YesGO to Q6.



2011 Mustang, 2/2011


Q5 CHECK THE AUDIO INPUT JACK CIRCUITS FOR AN OPEN OR SHORT TO GROUND (Continued)


Circuit

C2362-1 C290a-6 orC2383-47, then

ground

VME46 (BU/GN)

C2362-2 C290a-14 orC2383-48, then

ground

RME46 (WH/GN)

C2362-3 C290a-8 orC2383-46, then

ground

RME45 (YE/GN)

C2362-4 C290a-7 orC2383-45, then

ground

VME45 (BU)

• Is the resistance less than 5 ohms between the audio input jackand the ACM (or APIM, if equipped with the SYNC system), andgreater than 10,000 ohms between the audio input jack andground?

Q6 ISOLATE THE AUDIO INPUT JACK

• Connect: ACM C290a (Vehicles Without the SYNC System) or APIMC2383 (Vehicles With the SYNC System).

• Install a known good audio input jack. Refer to Audio Input Jack in thissection.


using the audio input jack.• Does the file play correctly?

YesThe concern was caused by an inoperative audio inputjack. The system is operating correctly at this time.

NoFor vehicles without the SYNC system, GO to Q7.For vehicles with the SYNC system, GO to Q8.

Q7 CHECK FOR CORRECT ACM OPERATION


2011 Mustang, 2/2011


Q7 CHECK FOR CORRECT ACM OPERATION (Continued)






Q8 CHECK FOR CORRECT APIM OPERATION

• Ignition OFF.• Disconnect the APIM connector.• Check for:


• Connect the APIM connector and make sure it seats correctly.• Wait 2 minutes for the APIM to re-initialize.• Operate the system and determine if the concern is still present.• Is the concern still present?



Pinpoint Test R: Loud Popping Sound When Cycling The Ignition SwitchRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationVoltage is sent through the start input circuit to the Audio Control Module (ACM) with the ignition in the START position. Upon receiving this signal, theACM mutes all speaker outputs to eliminate the possibility of voltage spikes producing a popping noise through the speakers.

The ACM disables the audio amplifier and subwoofer amplifier while the ignition is in the START position by keeping the enable circuit voltages below 0.4volt.

If there is a short to voltage on any of the enable circuits, distortion is heard in the speakers whenever the ACM is powered up, and that should be theprimary concern addressed. If the speakers have distorted sound, GO to Symptom Chart — Sound Quality.


• Fuse


• ACM

PINPOINT TEST R: LOUD POPPING SOUND WHEN CYCLING THE IGNITION SWITCHNOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.


R1 CHECK THE START INPUT CIRCUIT VOLTAGE

• Ignition OFF.• Disconnect: ACM C290d.• Disconnect: Starter Relay.• Hold the key in the START position.• Measure the voltage between the ACM C290d-15, circuit CBP28 (GY/


YesGO to R2.

NoVERIFY the Smart Junction Box (SJB) fuse 28 (5A) isOK. If OK, REPAIR the circuit. TEST the system fornormal operation. If not OK, REFER to the WiringDiagrams Manual to identify the possible causes of thecircuit short.


2011 Mustang, 2/2011

PINPOINT TEST R: LOUD POPPING SOUND WHEN CYCLING THE IGNITION SWITCH(Continued)


R1 CHECK THE START INPUT CIRCUIT VOLTAGE (Continued)


R2 ISOLATE THE FRONT/REAR SUBWOOFERS

NOTE: Repeat this step for each subwoofer amplifier.

• Ignition OFF.• Connect: ACM C290d.• Disconnect: Suspect Subwoofer Amplifier.• Cycle the key through all of the ignition switch positions.• Is a loud popping sound present for only one subwoofer

amplifier?

YesINSTALL a new subwoofer amplifier for the suspectsubwoofer amplifier. REFER to Subwoofer Amplifier —Door or Subwoofer Amplifier — Luggage Compartmentin this section. TEST the system for normal operation.

NoGO to R3.

R3 CHECK FOR CORRECT ACM OPERATION

• Connect: Starter Relay.• Disconnect all the ACM connectors.• Check for:





Pinpoint Test S: The Speed Sensitive Volume Does Not Operate CorrectlyRefer to Wiring Diagrams Cell 130, Audio/Navigation for schematic and connector information.

Normal OperationThe speed sensitive volume function adjusts the volume based on the Vehicle Speed Sensor (VSS) signal from the Instrument Panel Cluster (IPC). The IPCdoes not generate the VSS signal; it gateways the signal from the PCM. The Smart Junction Box (SJB) also receives this signal and should exhibit symptomsif the signal is lost.


• Speed sensitive volume setting

• VSS signal concern


• ACM

PINPOINT TEST S: THE SPEED SENSITIVE VOLUME DOES NOT OPERATE CORRECTLYTest Step Result / Action to Take

S1 CHECK THE SPEEDOMETER OPERATION

• Drive the vehicle and observe the speedometer.• Does the speedometer operate correctly?

YesGO to S2.


2011 Mustang, 2/2011

PINPOINT TEST S: THE SPEED SENSITIVE VOLUME DOES NOT OPERATE CORRECTLY(Continued)


S1 CHECK THE SPEEDOMETER OPERATION (Continued)NoREFER to Section 413-01.

S2 CHECK THE SPEED SENSITIVE VOLUME SETTING

• Turn the speed sensitive volume off. Refer to the Owner's Literature.• Operate the audio system in radio tuner (AM/FM) mode.• Drive the vehicle at various speeds and observe the speaker volume.• Set the speed sensitive volume to maximum compensation. Refer to

the Owner's Literature.• Operate the audio system in radio tuner (AM/FM) mode.• Drive the vehicle at various speeds and observe the speaker volume.• Does the volume remain constant with the speed sensitive

volume turned off, and increase and decrease with vehicle speedwith the speed sensitive volume set to maximum?

YesThe system is operating correctly at this time.INSTRUCT the customer in the correct usage of thespeed sensitive volume feature.

NoGO to S3.

S3 CHECK FOR DTC U0155 OR DTC U0155:00

• Using the scan tool, retrieve all continuous DTCs.• Is DTC U0155 or DTC U0155:00 retrieved in any module?

YesGO to Pinpoint Test AC.

NoGO to S4.

S4 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test T: Voice Recognition Is Inoperative/Does Not Operate CorrectlyRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal Operation — Vehicles Without NavigationWhen the VOICE switch is pressed, it changes a reference voltage signal, and the audio system enters voice recognition mode. The VOICE switch is wiredto the Accessory Protocol Interface Module (APIM). A microphone located in the auto-dimming interior mirror receives the voice command and sends asignal to the APIM. The microphone is also used to detect outgoing audio during a phone call.

Vehicles With NavigationWhen the VOICE switch is pressed, it changes a reference voltage signal, and the audio system enters voice recognition mode. The VOICE switch is wiredto the Audio Control Module (ACM). A microphone located in the auto-dimming interior mirror receives the voice command and sends a signal to theAPIM. The APIM receives the microphone input and also broadcasts it to the ACM. The first voice commands spoken determine which system handles thevoice commands.

The microphone test is available through the scan tool or through the ACM self-diagnostic mode. Running this test causes the ACM to produce a test tone. Ifthe system is operating correctly, the microphone detects the tone and produces a signal to the ACM indicating the tone was heard.

• DTC B1A16:01 (Microphone Input Circuit: General Electronic Failure) — set by the APIM during the on-demand self-test if it does not detect themicrophone.

• DTC B1D79:01 (Microphone Input Circuit: General Electrical Failure) — set by the ACM during the microphone test when it does not receive anadequate signal from the microphone when the test tone is sounded.



• Microphone (part of the auto-dimming interior mirror)

• Steering wheel controls

• ACM (if equipped with navigation)

• APIM (if equipped)


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PINPOINT TEST T: VOICE RECOGNITION IS INOPERATIVE/DOES NOT OPERATE CORRECTLYNOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.



T1 CHECK THE OPERATION OF THE STEERING WHEEL CONTROLS

• Operate the audio system in radio tuner (AM/FM) mode.• Press the VOICE button on the steering wheel controls.• Does the audio system enter voice recognition mode?

YesFor vehicles with navigation, GO to T2.For vehicles without navigation, GO to T5.

NoGO to Pinpoint Test P to diagnose the steering wheelcontrols system.

T2 CHECK THE MICROPHONE SIGNAL TO THE ACM

• Operate the audio system in radio tuner (AM/FM) mode.• Disconnect: ACM C290a.

NOTE: ACM C290a must be disconnected after the ACM is powered on orthe ACM will not receive the RUN message over the network.

• Press the VOICE button on the steering wheel controls.• While speaking a command, measure the AC voltage between the

ACM C290a-11, circuit VMM23 (BN/VT), harness side and the ACMC290a-12, circuit RMM23 (WH/GN), harness side.


YesGO to T11.

NoGO to T3.

T3 CHECK THE MICROPHONE CIRCUITS TO THE ACM FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: APIM C2383.• Ignition ON.• Measure the voltage between the ACM C290a-11, circuit VMM23

(BN/VT), harness side and ground; and between the ACM C290a-12,circuit RMM23 (WH/GN), harness side and ground.



NoGO to T4.

T4 CHECK THE MICROPHONE CIRCUITS TO THE ACM FOR AN OPEN OR SHORT TO GROUND


2011 Mustang, 2/2011

PINPOINT TEST T: VOICE RECOGNITION IS INOPERATIVE/DOES NOT OPERATE CORRECTLY(Continued)

T4 CHECK THE MICROPHONE CIRCUITS TO THE ACM FOR AN OPEN OR SHORT TO GROUND (Continued)

• Ignition OFF.• Measure the resistance between the ACM C290a-11, circuit VMM23

(BN/VT), harness side and the APIM C2383-12, circuit VMM23 (BN/VT), harness side; and between the ACM C290a-11, circuit VMM23(BN/VT), harness side and ground.

• Measure the resistance between the ACM C290a-12, circuit RMM23(WH/GN), harness side and the APIM C2383-13, circuit RMM23 (WH/GN), harness side; and between the ACM C290a-12, circuit RMM23(WH/GN), harness side and ground.

• Is the resistance less than 5 ohms between the ACM and theAPIM, and greater than 10,000 ohms between the ACM andground?

YesGO to T5.


T5 CHECK THE MICROPHONE VOLTAGE SUPPLY

• Ignition OFF.• Disconnect: Auto-Dimming Interior Mirror C9012 (Without Video

Mirror) Or C9039 (With Video Mirror).• Ignition ON.• For vehicles with video mirror, measure the voltage between the auto-

dimming interior mirror C9039-1, circuit CBP41 (BU), harness sideand ground.

YesGO to T6.



2011 Mustang, 2/2011


T5 CHECK THE MICROPHONE VOLTAGE SUPPLY (Continued)

• For vehicles without video mirror, measure the voltage between theauto-dimming interior mirror C9012-1, circuit CBP41 (BU), harnessside and ground.


T6 CHECK THE MICROPHONE GROUND CIRCUIT FOR CONTINUITY

• Ignition OFF.• Disconnect: Negative Battery Cable.• For vehicles with video mirror, measure the resistance between the

auto-dimming interior mirror C9039-3, circuit GD139 (BK/YE), harnessside and ground.

• For vehicles without video mirror, measure the resistance betweenthe auto-dimming interior mirror C9012-10, circuit GD139 (BK/YE),harness side and ground.

YesGO to T7.



2011 Mustang, 2/2011


T6 CHECK THE MICROPHONE GROUND CIRCUIT FOR CONTINUITY (Continued)


T7 CHECK THE MICROPHONE CIRCUITS FOR A SHORT TO VOLTAGE

• Connect: Negative Battery Cable.• Disconnect: APIM C2383.• Ignition ON.• For vehicles with video mirror, measure the voltage between the auto-

dimming interior mirror C9039-6, circuit VMM13 (YE/GN), harnessside and ground; and between the auto-dimming interior mirrorC9039-14, circuit RMM13 (BU), harness side and ground.

• For vehicles without video mirror, measure the voltage between theauto-dimming interior mirror C9012-4, circuit VMM13 (YE/GN),harness side and ground; and between the auto-dimming interiormirror C9012-5, circuit RMM13 (BU), harness side and ground.



NoGO to T8.

T8 CHECK THE MICROPHONE CIRCUITS FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the auto-dimming interior mirror,

harness side and the APIM, harness side; and between the auto-dimming interior mirror, harness side and ground as follows:

YesGO to T9.


2011 Mustang, 2/2011

PINPOINT TEST T: VOICE RECOGNITION IS INOPERATIVE/DOES NOT OPERATE CORRECTLYT8 CHECK THE MICROPHONE CIRCUITS FOR AN OPEN OR SHORT TO GROUND (Continued)

VehicleContent

Positive MeterLead

NegativeMeter Lead

Circuit

With videomirror

C9039-6 C2383-5, thenground

VMM13 (YE/GN)


RMM13 (BU)

Without videomirror


VMM13 (YE/GN)


RMM13 (BU)

• Are the resistances less than 5 ohms between the auto-dimminginterior mirror and the APIM, and greater than 10,000 ohmsbetween the auto-dimming interior mirror and ground?


T9 ISOLATE THE AUTO-DIMMING INTERIOR MIRROR

• Connect: APIM C2383.• Install a new auto-dimming interior mirror. Refer to Section 501-09.• Operate the audio system in radio tuner (AM/FM) mode.• Press the VOICE button on the steering wheel controls, and attempt

several voice commands.• Does the voice recognition operate correctly?

YesThe fault was caused by an inoperative auto-dimminginterior mirror. The system is now operating correctly.

NoGO to T10.

T10 CHECK FOR CORRECT APIM OPERATION



• Connect the APIM connector and make sure it seats correctly.• Wait 2 minutes for the APIM to re-initalize.• Is the concern still present?



T11 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test U: No Global Positioning System (GPS) Antenna Signal

Normal OperationThe Global Positioning System (GPS) antenna provides information from the GPS satellite system to the Audio Control Module (ACM). This information isused to calculate position and direction of travel.


2011 Mustang, 2/2011

A splitter is used in the front satellite radio antenna cable to split the signals between the satellite radio and the GPS. It is possible that a concern in the GPSsignal line after the splitter may cause a navigation system concern without affecting the satellite radio.

• DTC B119F:01 (GPS Antenna: General Electrical Failure) — sets when any failure is detected in the GPS antenna circuit.

• DTC B119F:13 (GPS Antenna: Circuit Open) — sets when an open is detected in the GPS antenna circuit.


• Satellite radio antenna cable

• ACM

PINPOINT TEST U: NO GPS ANTENNA SIGNALTest Step Result / Action to Take

U1 CHECK THE SATELLITE SIGNAL PID (SAT_SIG_STR)


• Monitor the ACM PID (SAT_SIG_STR).• Does the PID indicate "No Signal" or "Undefined"?

YesGO to Pinpoint Test B.

NoGO to U2.

U2 CHECK FOR GPS SIGNAL-RELATED DTCs

• Clear the ACM DTCs.• Carry out the ACM self-test.• Is DTC B119F:01 or DTC B119F:13 retrieved?

YesINSTALL a new front satellite radio antenna cable.REFER to Antenna Cable — Satellite Radio in thissection. CLEAR the DTCs. TEST the system for normaloperation.

NoGO to U3.

U3 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test V: The Position Cursor Is Inaccurate

Normal OperationThe primary source of vehicle location for the navigation system is the Audio Control Module (ACM) receiving the position signal through the GlobalPositioning System (GPS) antenna (integral to the satellite radio antenna).

In addition, the ACM receives the navigation rolling wheel count signal from the Instrument Panel Cluster (IPC) (which gateways the signal from the ABSmodule). This secondary signal is used to calculate vehicle position when the GPS signal is lost. It also supports the adaptive learning function of the ACM,whereby the ACM can compensate for long-term differences between the GPS signal location and the actual distance traveled by the vehicle.

If DTC B119F:01 or DTC B119F:13 is present, GO to Pinpoint Test V to diagnose a concern with the GPS antenna.

• DTC U2014:09 (Control Module Hardware: Component Failure) — sets when the ACM detects a fault in the internal gyroscope. The gyroscope is notserviceable.


• GPS antenna concern

• Network message concern

• ACM

PINPOINT TEST V: THE POSITION CURSOR IS INACCURATETest Step Result / Action to Take

V1 CHECK THE ACM FOR GPS SIGNAL-RELATED DTCs


2011 Mustang, 2/2011

PINPOINT TEST V: THE POSITION CURSOR IS INACCURATE (Continued)Test Step Result / Action to Take

V1 CHECK THE ACM FOR GPS SIGNAL-RELATED DTCs (Continued)

• Retrieve the ACM continuous DTCs.• Is DTC B119F:01 or DTC B119F:13 present?

YesGO to Pinpoint Test U.

NoGO to V2.

V2 CHECK FOR DTC U0155:00

• Review the ACM continuous DTCs.• Is DTC U0155:00 present?

YesGO to Pinpoint Test AC.

NoGO to V3.

V3 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test W: The Voice Guidance Is Inoperative/Does Not Operate CorrectlyRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThe voice-assisted route guidance is broadcast through the front speakers. The voice guidance volume can be adjusted using the settings on the AudioControl Module (ACM).


• Incorrect voice guidance setting

• ACM

PINPOINT TEST W: THE VOICE GUIDANCE IS INOPERATIVE/DOES NOT OPERATECORRECTLY



W1 CHECK THE VOICE GUIDANCE SETTING

• Adjust the voice volume to approximately 50%. Refer to the Owner'sLiterature.

• Set a destination and start the route using the navigation controls.Refer to the Owner's Literature.

• Observe the voice guidance.• Does the voice guidance operate correctly?

YesThe concern was caused by an incorrect customersetting. INSTRUCT the customer in the correct use ofthe voice guidance feature.

NoGO to W2.

W2 CHECK THE SPEAKER OUTPUT

• Carry out the speaker walk test. Refer to Audio Control Module (ACM)Self-Diagnostic Mode in this section.

• Do the front speakers operate correctly?

YesGO to W3.

NoGO to Pinpoint Test C.

W3 CHECK FOR CORRECT ACM OPERATION



YesINSTALL a new ACM. REFER to Audio Control Module(ACM) in this section. TEST the system for normaloperation after the repair.


2011 Mustang, 2/2011

PINPOINT TEST W: THE VOICE GUIDANCE IS INOPERATIVE/DOES NOT OPERATECORRECTLY (Continued)

W3 CHECK FOR CORRECT ACM OPERATION (Continued)• Connect all the ACM connectors and make sure they seat correctly.• Operate the system and verify the concern is still present.• Is the concern still present?


Pinpoint Test X: The SYNC System Is Completely Inoperative

Normal OperationWhen a button on the Front Controls Interface Module (FCIM) is pressed, a network message is broadcast to the APIM via the Medium Speed ControllerArea Network (MS-CAN). The APIM takes the appropriate action and sends a status message to the Front Display Interface Module (FDIM) (vehicleswithout navigation) or the Audio Control Module (ACM) (vehicles with navigation) in order to update the display screen.


• Audio system concern


• Customer error

• Customer device

• APIM

PINPOINT TEST X: THE SYNC SYSTEM IS COMPLETELY INOPERATIVENOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.


X1 CHECK FOR SCAN TOOL COMMUNICATION WITH THE APIM

• Carry out the network test using the scan tool.• Does the APIM pass the network test?

YesGO to X2.


X2 CHECK THE SYNC SYSTEM OPERATION

NOTE: Carrying out a Master Reset returns all preference settings to the factory defaults,erases all the phone book and call histories, and deletes any devices paired withthe SYNC system.

• Connect: Multi-Media Interface Tester.• Using the Multi-Media Interface Tester, test the audio output for the

audio input jack, Universal Serial Bus (USB) port, and Bluetoothconnection.

• Do all of the SYNC inputs function correctly?

YesThe SYNC system is operating correctly at this time.CARRY OUT a SYNC system Master Reset. REFER tothe Owner's Literature.REVIEW the SYNC system operation with thecustomer. If the customer device still does not operatecorrectly, the fault is with the customer device.

NoIf only some of the inputs are inoperative, GO toSymptom Chart — SYNC System to diagnose theobserved symptom.If all inputs are inoperative, GO to X3.

X3 CHECK FOR CORRECT APIM OPERATION






Pinpoint Test Y: Unable To Pair Bluetooth Device

Normal OperationWhen a new Bluetooth device is added, the Accessory Protocol Interface Module (APIM) and the Bluetooth device must be paired together. Most Bluetoothdevices can pair with the SYNC system, although functionality may vary. To determine if a Bluetooth device is supported, retrieve the Consumer Interface


2011 Mustang, 2/2011

Processor (CIP) software level using the Accessory Protocol Interface Module (APIM) Software Level Check in this section, and verify the customer deviceis on the compatibility list for the current CIP software level.

Pairing a Bluetooth device is accomplished through the "Add Device" selection of the phone menu. When pairing a device, the SYNC system generates aunique Personal Identification Number (PIN) that must be entered on the Bluetooth device in order for the pairing process to be successful. There are alsosome device-specific actions that must take place. For additional information on the pairing process, refer to the Owner's Literature.


• Incompatible Bluetooth device

• Customer error

• Customer Bluetooth device

• APIM

PINPOINT TEST Y: UNABLE TO PAIR BLUETOOTH DEVICETest Step Result / Action to Take

Y1 CHECK THE BLUETOOTH CONNECTION

NOTE: Carrying out a Master Reset returns all preference settings to the factory defaults,erases all the phone book and call histories, and deletes any devices paired withthe SYNC system.

• Connect: Multi-Media Interface Tester.• Using the Multi-Media Interface Tester, connect to the SYNC system

using Bluetooth. Follow the tool instructions.• Enter the following diagnostic mode on the scan tool: APIM

DataLogger.• Monitor the Bluetooth device paired PID (BT_PAIR) and the Bluetooth

device connected PID (BT_CONN).• Do the PIDs BT_PAIR and BT_CONN both read "Yes"?

YesThe SYNC system is operating correctly at this time.CARRY OUT a SYNC system Master Reset. REFER tothe Owner's Literature.REVIEW the pairing process with the customer. If thecustomer device still does not pair, the fault is with thecustomer device.

NoGO to Y2.

Y2 CHECK FOR CORRECT APIM OPERATION

• Disconnect the APIM connector.• Check for:





Pinpoint Test Z: The Universal Serial Bus (USB) Port Is Inoperative/Does Not Operate Correctly

Normal OperationThe Universal Serial Bus (USB) port is connected to the Accessory Protocol Interface Module (APIM) through the USB cable. The USB port can be used toplay audio files or upload software from mass storage devices, or for connecting a media device.

If supported by the user device, the USB can provide charging. Because of this feature, when a USB device is plugged into the USB port, the SYNC systemdoes not automatically switch to the device.

It is important to note that when a USB mass storage device is used to play an audio file, the SYNC system only plays audio files that do not have DigitalRights Management (DRM) protection. This is normal operation.

The USB cable and port are not serviceable separately.

• DTC B1252:04 (USB Port: System Internal Failure) — sets when the APIM detects any fault in the USB circuit. This can be caused by a fault in theUSB cable or port, or by the customer USB device.

• DTC B1252:11 (USB Port: Circuit Short to Ground) — sets when the APIM detects a short to ground in the USB circuit.


• Customer USB device

• USB cable and port

• APIM


2011 Mustang, 2/2011

PINPOINT TEST Z: THE USB PORT IS INOPERATIVE/DOES NOT OPERATE CORRECTLYTest Step Result / Action to Take

Z1 CHECK THE USB CONNECTION


using the USB port.• Does the audio file play successfully using the USB connection?

YesThe SYNC system is operating correctly. REVIEW theoperation of the USB port with the customer. If thecustomer device still does not operate correctly, thefault is with the customer device.

NoGO to Z2.

Z2 INSPECT THE USB CABLE

• Ignition OFF.• Disconnect: USB Cable At APIM.• Inspect the USB cable for damage.• Connect: USB Cable At APIM.• Connect: Multi-Media Interface Tester.• Ignition ON.• Using the Multi-Media Interface Tester, attempt to play an audio file

using the USB port.• Does the audio file play correctly using the USB connection?

YesThe concern was caused by the USB connection notbeing seated correctly. The system is now operatingcorrectly.

NoGO to Z3.

Z3 ISOLATE THE USB CABLE AND PORT

• Install a new USB cable and port. Refer to Universal Serial Bus (USB)Cable and Port in this section.


using the USB port.• Does the audio file play successfully using the USB connection?

YesThe concern was caused by an inoperative USB cable.The system is now operating correctly.

NoGO to Z4.

Z4 CHECK FOR CORRECT APIM OPERATION






Pinpoint Test AA: The SYNC System Audible Prompts Are Inoperative/Do Not Operate CorrectlyRefer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationThe Text-To-Speech (TTS) and voice prompt features speak certain text information and interaction requests in order to minimize driver distraction whiledriving. The ringtone alerts the driver to an incoming call.

Audible prompts can range from a simple tone to more elaborate spoken text, based on the customer setting. When interaction mode is set to standard,detailed guidance is provided. When interaction mode is set to advanced, most prompts are tones only and minimal audible guidance is provided. Refer tothe Owner's Literature for further information on voice interaction.

The audio signals for the TTS and voice prompt features, the ringtones, and audio from the outside device during a phone call, are sent from the AccessoryProtocol Interface Module (APIM) to the Audio Control Module (ACM).


• Customer setting


• ACM

• APIM


2011 Mustang, 2/2011

PINPOINT TEST AA: THE SYNC SYSTEM AUDIBLE PROMPTS ARE INOPERATIVE/DO NOTOPERATE CORRECTLY



AA1 CHECK THE AUDIBLE PROMPT SETTING

• Operate the audio system in SYNC mode.• Verify the audible prompts are enabled. Refer to "SYNC Voice

Recognition Feature" in the Owner's Literature.• Press the VOICE switch on the steering wheel controls and observe

the SYNC system audible prompt.• Does the SYNC system produce an audible prompt correctly?

YesThe system is operating correctly at this time. Theconcern was caused by a customer setting. INSTRUCTthe customer in the correct operation of the audibleprompt feature.

NoGO to AA2.

AA2 CHECK FOR A VOLTAGE SIGNAL FROM THE APIM

• Operate the audio system in SYNC mode.• While pressing the VOICE switch repeatedly, measure the AC voltage

by back-probing between the ACM C290a-4, circuit VMN14 (WH/VT),harness side and the ACM C290a-5, circuit RMN14 (GY/BN), harnessside.

• Is an AC voltage produced each time the VOICE switch ispressed?

YesGO to AA6.

NoGO to AA3.

AA3 CHECK THE AUDIBLE PROMPT CIRCUITS FOR A SHORT TO VOLTAGE

• Ignition OFF.• Disconnect: ACM C290a.• Disconnect: APIM C2383.• Ignition ON.• Measure the voltage between the APIM C2383-3, circuit VMN14 (WH/

VT), harness side and ground; and between the APIM C2383-4,circuit RMN14 (GY/BN), harness side and ground.



NoGO to AA4.

AA4 CHECK THE AUDIBLE PROMPT CIRCUITS FOR AN OPEN OR SHORT TO GROUND

• Ignition OFF.• Measure the resistance between the APIM C2383-3, circuit VMN14

(WH/VT), harness side and the ACM 290a-4, circuit VMN14 (WH/VT),harness side; and between the APIM C2383-3, circuit VMN14 (WH/VT), harness side and ground.

YesGO to AA5.



2011 Mustang, 2/2011

PINPOINT TEST AA: THE SYNC SYSTEM AUDIBLE PROMPTS ARE INOPERATIVE/DO NOTOPERATE CORRECTLY (Continued)

AA4 CHECK THE AUDIBLE PROMPT CIRCUITS FOR AN OPEN OR SHORT TO GROUND (Continued)

• Measure the resistance between the APIM C2383-4, circuit RMN14(GY/BN), harness side and the ACM 290a-5, circuit RMN14 (GY/BN),harness side; and between the APIM C2383-4, circuit RMN14 (GY/BN), harness side and ground.

• Is the resistance less than 5 ohms between the APIM and theACM, and greater than 10,000 ohms between the APIM andground?

AA5 CHECK FOR CORRECT APIM OPERATION






AA6 CHECK FOR CORRECT ACM OPERATION






Pinpoint Test AB: DTC U0140 Or DTC U0140:00Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationSeveral audio system modules receive network messages from the Smart Junction Box (SJB) via the Medium Speed Controller Area Network (MS-CAN).The following information is included in the messages:


2011 Mustang, 2/2011

• Ignition switch position

• Illumination dimmer control

• Accessory delay status

As more than one module receives these messages, all modules receiving a particular message should exhibit a symptom if the message is missing.

• DTC U0140 (Lost Communication With Body Control Module) — set by the Front Display Interface Module (FDIM) when network messages aremissing from the SJB for greater than 5 seconds with the ignition in RUN.

• DTC U0140:00 (Lost Communication With Body Control Module: No Sub Type Information) — set by the Audio Control Module (ACM), theAccessory Protocol Interface Module (APIM), the Global Positioning System Module (GPSM), or the Front Controls Interface Module (FCIM) whennetwork messages are missing from the SJB for greater than 5 seconds with the ignition in RUN.




• SJB

PINPOINT TEST AB: DTC U0140 OR DTC U0140:00Test Step Result / Action to Take

AB1 CHECK FOR LOST COMMUNICATION DTCs

• Ignition ON.• Clear continuous DTCs from all modules.• Ignition OFF.• Ignition ON.• Wait at least 10 seconds.• Retrieve all continuous DTCs from all modules.• Is DTC U0140 or DTC U0140:00 set in any audio system module?

YesGO to AB2.

NoThe system is operating correctly at this time. The DTCmay have been set due to an intermittent fault in thenetwork wiring.

AB2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— ACM— APIM (if equipped)— FCIM— FDIM (without navigation)— GPSM (if equipped)— SJB

• Is DTC B1318, U3003:16, or U3003:17 recorded in any module?

YesFor an audio system module, REFER to DTC Charts inthis section.For the SJB, REFER to Section 419-10.

NoGO to AB3.

AB3 CHECK FOR DTC U0140 OR DTC U0140:00 SET IN MULTIPLE MODULES

• Review the recorded results from the self-test.• Is DTC U0140 or DTC U0140:00 set in more than one audio

system module?

YesGO to AB4.

NoIf there is an observable symptom, GO to SymptomChart — General Audio System to diagnose theobserved symptom.If there is no observable symptom, CHECK the MS-CAN wiring between the SJB and the module inquestion for a fault.

AB4 CHECK FOR CORRECT SJB OPERATION

• Disconnect all the SJB connectors.• Check for:


• Connect all the SJB connectors and make sure they seat correctly.• Is the concern still present?

YesINSTALL a new SJB. REFER to Section 419-10.CLEAR all continuous DTCs. TEST the system fornormal operation.

NoThe system is operating correctly at this time. Theconcern may have been caused by a loose or corrodedconnector. CLEAR all continuous DTCs. REPEAT theself-test for the module(s) that set DTC U0140 or DTCU0140:00.

Pinpoint Test AC: DTC U0155 Or DTC U0155:00Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal Operation


2011 Mustang, 2/2011

Several audio system modules receive network messages from the Instrument Panel Cluster (IPC) via the Medium Speed Controller Area Network (MS-CAN). The following information is included in the messages:

• English/metric units

• Vehicle Identification Number (VIN)

• Transmission gear selected

• Vehicle speed


• DTC U0155 (Lost Communication With Instrument Panel Cluster (Instrument Panel Cluster (IPC))) — set by the Front Display Interface Module(FDIM) when network messages are missing from the IPC for greater than 5 seconds with the ignition in RUN.

• DTC U0155:00 (Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information) set by the Audio ControlModule (ACM), the Global Positioning System Module (GPSM), or the Accessory Protocol Interface Module (APIM) when network messages aremissing from the IPC for greater than 5 seconds with the ignition in RUN.




• IPC

PINPOINT TEST AC: DTC U0155 OR DTC U0155:00Test Step Result / Action to Take

AC1 CHECK FOR LOST COMMUNICATION DTCs


YesGO to AC2.


AC2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— ACM— APIM (if equipped)— FDIM (navigation only)— GPSM (if equipped)— IPC


YesFor an audio system module, REFER to DTC Charts inthis section.For the IPC, REFER to Section 413-01.

NoGO to AC3.

AC3 CHECK FOR DTC U0155 OR DTC U0155:00 SET IN MULTIPLE MODULES


system module?

YesGO to AC4.

NoIf there is an observable symptom, GO to SymptomChart — General Audio System to diagnose theobserved symptom.If there is no observable symptom, CHECK the MS-CAN wiring between the SJB and the module inquestion for a fault.

AC4 CHECK FOR CORRECT IPC OPERATION

• Disconnect the IPC connector.• Check for:


• Connect the IPC connector and make sure it seats correctly.• Is the concern still present?

YesINSTALL a new IPC. REFER to Section 413-01.CLEAR all continuous DTCs. TEST the system fornormal operation.



2011 Mustang, 2/2011

Pinpoint Test AD: DTC U0197 Or DTC U0197:00Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationSeveral audio system modules receive network messages from the Accessory Protocol Interface Module (APIM) via the Medium Speed Controller AreaNetwork (MS-CAN). These messages consist of various audio system related information.


• DTC U0197 (Lost Communication With Telephone Control Module) — set by Front Display Interface Module (FDIM) when network messages aremissing from the APIM for greater than 5 seconds with the ignition in RUN.

• DTC U0197:00 (Lost Communication With Radio: No Sub Type Information) — set by the Audio Control Module (ACM) or the Global PositioningSystem Module (GPSM) when network messages are missing from the APIM for greater than 5 seconds with the ignition in RUN.




• APIM

PINPOINT TEST AD: DTC U0197 OR DTC U0197:00Test Step Result / Action to Take

AD1 CHECK FOR LOST COMMUNICATION DTCs


YesGO to AD2.


AD2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— ACM— APIM (if equipped)— FDIM (with navigation)— GPSM (if equipped)



NoGO to AD3.

AD3 CHECK FOR DTC U0197 OR DTC U0197:00 SET IN MULTIPLE MODULES


system module?

YesGO to AD4.

NoIf there is an observable symptom, REFER to theappropriate Symptom Chart in this section.If there is no observable symptom, CHECK the MS-CAN wiring between the APIM and the module inquestion for a fault.

AD4 CHECK FOR CORRECT APIM OPERATION



• Connect the APIM connector and make sure it seats correctly.• Wait 2 minutes for the APIM to re-initialize.• Is the concern still present?

YesINSTALL a new APIM. REFER to Accessory ProtocolInterface Module (APIM) in this section. CLEAR allcontinuous DTCs. TEST the system for normaloperation.


Pinpoint Test AE: DTC U0255:00

Normal Operation


2011 Mustang, 2/2011

• DTC U0255:00 (Lost Communication With Front Display Interface Module: No Sub Type Information) — set by the Audio Control Module (ACM) orthe Accessory Protocol Interface Module (APIM) when network messages are missing from the Front Display Interface Module (FDIM) over theMedium Speed Controller Area Network (MS-CAN) for greater than 5 seconds with the ignition in the RUN position.



• ACM

• FDIM

• APIM

PINPOINT TEST AE: DTC U0255:00NOTE: Disregard the pinpoint test steps for the APIM if the concern is on a vehicle without the SYNC system.


AE1 CHECK THE ACM AND FDIM DTCs

NOTE: If new modules were installed prior to the DTC being set, the moduleconfiguration may be incorrectly set during Programmable Module Installation(PMI) or the PMI may not have been carried out.

• Clear the ACM and APIM DTCs.• Ignition OFF.• Ignition ON.• Wait at least 10 seconds.• Repeat the ACM and APIM self-tests.• Is DTC U0255:00 still present?

YesGO to AE2.


AE2 VERIFY THE CUSTOMER CONCERN

• Ignition ON.• Verify that there is an observable symptom present.• Is an observable symptom present?

YesGO to AE3.

NoThe system is operating correctly at this time. The DTCmay have been set due to an intermittent fault in thenetwork wiring. CHECK the MS-CAN wiring betweentheFDIM and the module in question for a fault.

AE3 CHECK THE COMMUNICATION NETWORK

• Ignition ON.• Carry out the network test using the scan tool.• Does the FDIM pass the network test?

YesGO to AE4.


AE4 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— ACM— APIM— FDIM

• Is DTC U3003:16 or DTC U3003:17 recorded in any module?


NoINSTALL a new FDIM. REFER to Front DisplayInterface Module (FDIM) in this section. CLEAR theACM and APIM DTCs. REPEAT the ACM and APIMself-tests.If DTC U0255:00 is still present in the ACM, INSTALL anew ACM. REFER to Audio Control Module (ACM) inthis section. TEST the system for normal operation.If DTC U0255:00 is still present in the APIM, INSTALLa new APIM. REFER to Accessory Protocol InterfaceModule (APIM) in this section. TEST the system fornormal operation.

Pinpoint Test AF: DTC U0256:00

Normal Operation

• DTC U0256:00 (Lost Communication With Front Controls Interface Module: No Sub Type Information) — set by the Audio Control Module (ACM)or the Accessory Protocol Interface Module (APIM) when network messages are missing from the Front Controls Interface Module (FCIM) over theMedium Speed Controller Area Network (MS-CAN) for greater than 5 seconds with the ignition in the RUN position.


2011 Mustang, 2/2011



• ACM

• FCIM

• APIM

PINPOINT TEST AF: DTC U0256:00NOTE: Disregard the pinpoint test steps for the APIM if the concern is on a vehicle without the SYNC system.


AF1 CHECK THE ACM AND FDIM DTCs


• Clear the ACM and APIM DTCs.• Ignition OFF.• Ignition ON.• Wait at least 10 seconds.• Repeat the ACM and APIM self-tests.• Is DTC U0256:00 still present?

YesGO to AF2.


AF2 VERIFY THE CUSTOMER CONCERN


YesGO to AF3.

NoThe system is operating correctly at this time. The DTCmay have been set due to an intermittent fault in thenetwork wiring. CHECK the MS-CAN wiring betweentheFCIM and the module in question for a fault.

AF3 CHECK THE COMMUNICATION NETWORK

• Ignition ON.• Carry out the network test using the scan tool.• Does the FCIM pass the network test?

YesGO to AF4.


AF4 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— ACM— APIM— FCIM



NoINSTALL a new FCIM. REFER to Front ControlsInterface Module (FCIM) in this section. CLEAR theACM and APIM DTCs. REPEAT the ACM and APIMself-tests.If U0256:00 is still present in the ACM, INSTALL a newACM. REFER to Audio Control Module (ACM) in thissection. TEST the system for normal operation.If DTC U0256:00 is still present in the APIM, INSTALLa new APIM. REFER to Accessory Protocol InterfaceModule (APIM) in this section. TEST the system fornormal operation.

Pinpoint Test AG: DTC U0164 Or DTC U0164:00Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationSome audio system modules receive network messages from the HVAC module via the Medium Speed Controller Area Network (MS-CAN). The followinginformation is included in the messages:

• HVAC indication status

• Outside temperature


2011 Mustang, 2/2011


• DTC U0164 (Lost Communication With HVAC Control Module (EATC)) — set by the Front Display Interface Module (FDIM) when networkmessages are missing from the HVAC module for greater than 5 seconds with the ignition in RUN.

• DTC U0164:00 (Lost Communication With HVAC Control Module: No Sub Type Information) — set by the navigation Audio Control Module(ACM) when network messages are missing from the HVAC module for greater than 5 seconds with the ignition in RUN.




• HVAC module

PINPOINT TEST AG: DTC U0164 OR DTC U0164:00Test Step Result / Action to Take

AG1 CHECK FOR LOST COMMUNICATION DTCs


YesGO to AG2.


AG2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— ACM— FCIM— FDIM— HVAC module


YesFor an audio system module, REFER to DTC Charts inthis section.For the HVAC module, REFER to Section 412-00.

NoGO to AG3.

AG3 CHECK FOR DTC U0164 OR DTC U0164:00 SET IN MULTIPLE MODULES


system module?

YesGO to AG4.

NoIf there is an observable symptom, GO to SymptomChart — General Audio System to diagnose theobserved symptom.If there is no observable symptom, CHECK the MS-CAN wiring between the HVAC module and the modulein question for a fault.

AG4 CHECK FOR CORRECT HVAC MODULE OPERATION

• Disconnect all the HVAC module connectors.• Check for:


• Connect all the HVAC module connectors and make sure they seatcorrectly.

• Is the concern still present?

YesINSTALL a new HVAC module. REFER to Section412-01. CLEAR all continuous DTCs. TEST the systemfor normal operation.


Pinpoint Test AH: DTC U0100:00

Normal OperationThe Accessory Protocol Interface Module (APIM) receives network messages from the PCM via the High Speed Controller Area Network (HS-CAN).These messages include the odometer reading and the fuel level.

As other modules outside of the audio system also receive these messages, all modules receiving a particular message should exhibit a symptom if themessage is missing.

• DTC U0100:00 (Lost Communication With ECM/PCM "A": No Sub Type Information) — set by the APIM when it is missing messages from thePCM over the HS-CAN for greater than 5 seconds with the ignition in the RUN position.


2011 Mustang, 2/2011



• PCM

PINPOINT TEST AH: DTC U0100:00Test Step Result / Action to Take

AH1 CHECK FOR LOST COMMUNICATION DTCs

• Ignition ON.• Clear continuous DTCs from all modules.• Ignition OFF.• Ignition ON.• Wait at least 10 seconds.• Retrieve all continuous DTCs from all modules.• Is U0100:00 set in any modules?

YesGO to AH2.


AH2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— APIM— Powertrain Control Module (PCM)— Instrument Panel Cluster (IPC)


YesFor the APIM, REFER to DTC Charts in this section.For all other modules, REFER to the master list inSection 419-10.

NoGO to AH3.

AH3 CHECK FOR DTC U0100 OR DTC U0100:00 SET IN MULTIPLE MODULES

• Review the recorded results from the self-test.• Is DTC U0100 or DTC U0100:00 set in more than one module?

YesGO to AH4.

NoIf there is an observable symptom, GO to SymptomChart — General Audio System to diagnose theobserved symptom.If there is no observable symptom, CHECK the wiringbetween the APIM and the PCM for a fault.

AH4 CHECK FOR CORRECT PCM OPERATION

• Disconnect all the PCM connectors.• Check for:


• Connect all the PCM connectors and make sure they seat correctly.• Is the concern still present?

YesINSTALL a new PCM. Refer to Section 303-00. CLEARall continuous DTCs. REPEAT the APIM self-test.

NoThe system is operating correctly at this time. Theconcern may have been caused by a loose or corrodedconnector. CLEAR all continuous DTCs. REPEAT theAPIM self-test.

Pinpoint Test AI: DTC U0151:00

Normal OperationThe Accessory Protocol Interface Module (APIM) receives the eCall status message from the Restraints Control Module (RCM) via the High SpeedController Area Network (HS-CAN). This message indicates to the APIM the status of the emergency call system.

• DTC U0151:00 (Lost Communication With Restraints Control Module: No Sub Type Information) — set by the APIM when it is missing the eCallstatus message from the RCM over the HS-CAN for greater than 5 seconds with the ignition in the RUN position.



• Restraints system concern

PINPOINT TEST AI: DTC U0151:00Test Step Result / Action to Take

AI1 CHECK FOR LOST COMMUNICATION DTCs

• Ignition ON.• Clear continuous DTCs from all modules.• Ignition OFF.

YesGO to AI2.


2011 Mustang, 2/2011

PINPOINT TEST AI: DTC U0151:00 (Continued)Test Step Result / Action to Take

AI1 CHECK FOR LOST COMMUNICATION DTCs (Continued)• Ignition ON.• Wait at least 10 seconds.• Retrieve all continuous DTCs from all modules.• Is U0151:00 set in any modules?


AI2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— APIM— PCM— RCM— Instrument Panel Cluster (IPC)


YesFor the APIM, REFER to DTC Charts in this section.For all other modules, REFER to the master list inSection 419-10.

NoGO to AI3.

AI3 CHECK FOR DTC U0151 OR DTC U0151:00 SET IN MULTIPLE MODULES

• Review the recorded results from the self-test.• Is DTC U0151:00 set in more than one module?

YesGO to AI4.

NoIf there is an observable audio system symptom, GO toSymptom Chart — General Audio System to diagnosethe observed symptom.If there is an observable restraints system symptom,REFER to Section 501-20B to diagnose the symptom.If there is no observable symptom, CHECK the wiringbetween the APIM and the RCM for a fault.

AI4 CHECK FOR CORRECT RCM OPERATION

• Disconnect all the RCM connectors.• Check for:


• Connect all the RCM connectors and make sure they seat correctly.• Is the concern still present?

YesINSTALL a new RCM. REFER to Section 501-20B.CLEAR all continuous DTCs. REPEAT the APIM self-test. .

NoThe system is operating correctly at this time. Theconcern may have been caused by a loose or corrodedconnector. CLEAR all continuous DTCs. REPEAT theAPIM self-test.

Pinpoint Test AJ: DTC U016A:00

Normal Operation

• DTC U016A:00 (Lost Communication With Global Positioning System Module (GPSM): No Sub Type Information) — set by the Accessory ProtocolInterface Module (APIM) when it is missing network messages from the Global Positioning System Module (GPSM) over the Medium SpeedController Area Network (MS-CAN) for greater than 5 seconds with the ignition in the RUN position.



• GPSM

• APIM

PINPOINT TEST AJ: DTC U016A:00Test Step Result / Action to Take

AJ1 CHECK THE APIM DTCs


• Clear the APIM DTCs.• Ignition OFF.

YesGO to AJ2.



2011 Mustang, 2/2011

PINPOINT TEST AJ: DTC U016A:00 (Continued)Test Step Result / Action to Take

AJ1 CHECK THE APIM DTCs (Continued)• Ignition ON.• Wait at least 10 seconds.• Repeat the APIM self-test.• Is DTC U016A:00 still present?

AJ2 VERIFY THE CUSTOMER CONCERN


YesGO to AJ3.

NoThe system is operating correctly at this time. The DTCmay have been set due to an intermittent fault in thenetwork wiring. CHECK the MS-CAN wiring betweenthe APIM and the GPSM for a fault.

AJ3 CHECK THE COMMUNICATION NETWORK

• Ignition ON.• Carry out the network test using the scan tool.• Does the GPSM pass the network test?

YesGO to AJ4.


AJ4 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— APIM— GPSM

• Is DTC U3003:16 or DTC U3003:17 recorded in either module?


NoINSTALL a newGPSM. REFER to Global PositioningSystem Module (GPSM) in this section. CLEAR theAPIM DTCs. REPEAT the APIM self-test.If DTC U016A:00 is still present, INSTALL a new APIM.REFER to Accessory Protocol Interface Module (APIM)in this section. TEST the system for normal operation.

Pinpoint Test AK: DTC U0184 Or DTC U0184:00Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal OperationSeveral audio system modules receive network messages from the Audio Control Module (ACM) via the Medium Speed Controller Area Network (MS-CAN). These messages consist of various audio system related information.


• DTC U0184 (Lost Communication With Radio (ACM)) — set by the Front Display Interface Module (FDIM) when network messages are missingfrom the ACM for greater than 5 seconds with the ignition in RUN.

• DTC U0184:00 (Lost Communication With Radio: No Sub Type Information) — set by the Accessory Protocol Interface Module (APIM), the FCIMand the Global Positioning System Module (GPSM) when network messages are missing from the ACM for greater than 5 seconds with the ignition inRUN.




• ACM

PINPOINT TEST AK: DTC U0184 OR DTC U0184:00Test Step Result / Action to Take

AK1 CHECK FOR LOST COMMUNICATION DTCs

• Ignition ON.• Clear continuous DTCs from all modules.• Ignition OFF.• Ignition ON.• Wait at least 10 seconds.

YesGO to AK2.


2011 Mustang, 2/2011

PINPOINT TEST AK: DTC U0184 OR DTC U0184:00 (Continued)Test Step Result / Action to Take

AK1 CHECK FOR LOST COMMUNICATION DTCs (Continued)• Retrieve all continuous DTCs from all modules.• Is DTC U0184 or DTC U0184:00 set in any audio system module?


AK2 CHECK FOR BATTERY VOLTAGE OUT-OF-RANGE DTCs

• Carry out the self-test for the following modules:— ACM— APIM (if equipped)— FCIM— FDIM— GPSM



NoGO to AK3.

AK3 CHECK FOR DTC U0184 OR DTC U0184:00 SET IN MULTIPLE MODULES


system module?

YesGO to AK4.

NoIf there is an observable symptom, REFER to theappropriate Symptom Chart in this section.If there is no observable symptom, CHECK the MS-CAN wiring between the ACM and the module inquestion for a fault.

AK4 CHECK FOR CORRECT ACM OPERATION



• Connect all the ACM connectors and make sure they seat correctly.• Is the concern still present?

YesINSTALL a new ACM. REFER to Audio Control Module(ACM) in this section. CLEAR all continuous DTCs.TEST the system for normal operation.


Pinpoint Test AL: DTC U3003:16 (Audio Control Module (ACM))Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal Operation

• DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) — set by the Audio Control Module (ACM) as a continuous or on-demand DTCwhen the supply voltage falls below 10 volts for at least 10 seconds during normal operation, or for greater than 250 milliseconds during the self-test.



• High circuit resistance

• ACM

PINPOINT TEST AL: DTC U3003:16 (ACM)NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.



AL1 RECHECK THE ACM DTCs

• Clear the ACM DTCs.• Ignition OFF.• Ignition ON.

YesGO to AL2.


2011 Mustang, 2/2011

PINPOINT TEST AL: DTC U3003:16 (ACM) (Continued)Test Step Result / Action to Take

AL1 RECHECK THE ACM DTCs (Continued)• Wait 10 seconds.• Repeat the ACM self-test.• Is DTC U3003:16 still present?

NoThe system is operating correctly at this time. The DTCmay have set due to a previous low battery voltagecondition.

AL2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM

• Retrieve the continuous memory DTCs from all modules.• Is DTC P0620, P0622, P0625, P0626, or P065B set in the PCM?

YesREFER to Section 414-00.

NoGO to AL3.

AL3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

• Check the battery condition and verify that the battery is fully charged.Refer to Section 414-01.

• Is the battery OK and fully charged?

YesGO to AL4.


AL4 CHECK THE ACM VOLTAGE SUPPLY

• Ignition OFF.• Measure and record the voltage at the battery.• Disconnect: ACM 290d.• Ignition ON.• Measure the voltage between the ACM C290d-1, circuit SBP39 (WH/


• Is the voltage within 0.2 volt of the recorded battery voltage?

YesGO to AL5.

NoREPAIR the circuit for high resistance. CLEAR theDTCs. REPEAT the self-test.

AL5 CHECK THE ACM GROUND CIRCUIT FOR CONTINUITY

• Ignition OFF.• Disconnect: Negative Battery Cable.• Measure the resistance between the ACM C290d-13, circuit GD115



YesGO to AL6.


AL6 CHECK FOR CORRECT ACM OPERATION


2011 Mustang, 2/2011

PINPOINT TEST AL: DTC U3003:16 (ACM) (Continued)AL6 CHECK FOR CORRECT ACM OPERATION (Continued)

• Disconnect the ACM connector.• Check for:


• Connect the ACM connector and make sure it seats correctly.• Is the concern still present?



Pinpoint Test AM: DTC U3003:17 (Audio Control Module (ACM))

Normal Operation

• DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) — set by the Audio Control Module (ACM) when the supply voltage is greaterthan 15.8 volts for more than 250 milliseconds during normal operation or the self-test.


• Charging system concern

• ACM

PINPOINT TEST AM: DTC U3003:17 (ACM)NOTE: DTC U3003:17 may be stored in the module memory due to past battery charging or vehicle jump starting events.


AM1 CHECK FOR HIGH VOLTAGE DTCs SET IN OTHER MODULES

• Ignition ON.• Retrieve all continuous DTCs from all modules.• Is DTC B1317, B1676, B0563 (PCM), or U3003:17 set in more than

one module?

YesREFER to Section 414-00 to diagnose an overchargingcondition.

NoGO to AM2.

AM2 CHECK THE BATTERY VOLTAGE

• Turn off all interior/exterior lights and accessories.• Start and run the engine at approximately 2,000 rpm for 3 minutes

while monitoring the battery voltage.• Does the battery voltage rise to 15.5 volts or higher?


NoGO to AM3.

AM3 RECHECK FOR DTC U3003:17

• Turn the engine off.• Ignition ON.• Clear the ACM DTCs.• Repeat the ACM self-test.• Is DTC U3003:17 still present?

YesINSTALL a new ACM. REFER to Audio Control Module(ACM) in this section. TEST this system for normaloperation.

NoThe system is operating normally at this time. The DTCmay have been set previously during battery chargingor while jump starting the vehicle.

Pinpoint Test AN: DTC U3003:16 (Accessory Protocol Interface Module (APIM))Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal Operation

• DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) — set by the Accessory Protocol Interface Module (APIM) when the supplyvoltage falls below 10 volts for at least 10 seconds during normal operation.





2011 Mustang, 2/2011

• APIM

PINPOINT TEST AN: DTC U3003:16 (APIM)NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.



AN1 RECHECK THE APIM DTCs

• Clear the APIM DTCs.• Ignition OFF.• Ignition ON.• Wait at least 15 seconds.• Repeat the APIM self-test.• Is DTC U3003:16 still present?

YesGO to AN2.


AN2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM

• Retrieve the continuous memory DTCs from all modules.• Is DTC P0620, P0622, P0625, or P065B set in the PCM?


NoGO to AN3.

AN3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE



YesGO to AN4.


AN4 CHECK THE APIM VOLTAGE SUPPLY

• Ignition OFF.• Measure and record the voltage at the battery.• Disconnect: APIM C2383.• Ignition ON.• Measure the voltage between the APIM C2383-1, circuit SBP03 (BU/



YesGO to AN5.


AN5 CHECK THE APIM GROUND CIRCUITS FOR CONTINUITY

• Ignition OFF.• Disconnect: Negative Battery Cable.• Measure the resistance between the APIM C2383-37, circuit GD115

(BK/GY), harness side and ground; and between the APIM C2383-38,circuit GD115 (BK/GY), harness side and ground.

YesGO to AN6.

NoREPAIR the circuit in question for high resistance.CLEAR the DTCs. REPEAT the self-test.


2011 Mustang, 2/2011

PINPOINT TEST AN: DTC U3003:16 (APIM) (Continued)AN5 CHECK THE APIM GROUND CIRCUITS FOR CONTINUITY (Continued)

• Are the resistances less than 5 ohms?

AN6 CHECK FOR CORRECT APIM OPERATION



• Connect the APIM connector and make sure it seats correctly.• Wait 2 minutes for the APIM to re-initialize.• Is the concern still present?



Pinpoint Test AO: DTC U3003:17 (Accessory Protocol Interface Module (APIM))

Normal Operation

• DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) — set by the Accessory Protocol Interface Module (APIM) when the supplyvoltage is greater than 15.8 volts for more than 250 milliseconds during normal operation.



• APIM

PINPOINT TEST AO: DTC U3003:17 (APIM)NOTE: DTC U3003:17 may be stored in the module memory due to past battery charging or vehicle jump starting events.


AO1 CHECK FOR HIGH VOLTAGE DTCs SET IN OTHER MODULES

• Ignition ON.• Retrieve the continuous DTCs from all modules.• Is DTC B1317, B1676, B0563 (PCM), or U3003:17 set in more than

one module?


NoGO to AO2.

AO2 CHECK THE BATTERY VOLTAGE




NoGO to AO3.

AO3 RECHECK FOR DTC U3003:17

• Ignition OFF.• Ignition ON.• Clear the APIM DTCs.• Repeat the APIM self-test.

YesINSTALL a new APIM. REFER to Accessory ProtocolInterface Module (APIM) in this section. TEST thissystem for normal operation.


2011 Mustang, 2/2011

PINPOINT TEST AO: DTC U3003:17 (APIM) (Continued)AO3 RECHECK FOR DTC U3003:17 (Continued)

• Is DTC U3003:17 present? NoThe system is operating normally at this time. The DTCmay have been set previously during battery chargingor while jump starting the vehicle.

Pinpoint Test AP: DTC U3003:16 (Front Controls Interface Module (FCIM))Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal Operation

• DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) — set by the Front Controls Interface Module (FCIM) when the supply voltagefalls below 10 volts for greater than 10 seconds during normal operation or for greater than 250 milliseconds during the self-test.




• FCIM

PINPOINT TEST AP: DTC U3003:16 (FCIM)NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.



AP1 RECHECK THE FCIM DTCs

• Clear the FCIM DTCs.• Ignition OFF.• Ignition ON.• Wait at least 15 seconds.• Repeat the FCIM self-test.• Is DTC U3003:16 still present?

YesGO to AP2.


AP2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM



NoGO to AP3.

AP3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE



YesGO to AP4.


AP4 CHECK THE FCIM VOLTAGE SUPPLY

• Ignition OFF.• Measure and record the voltage at the battery.• Disconnect: FCIM C2402.• Ignition ON.• Measure the voltage between the FCIM module C2402-1, circuit

SBP14 (BN/RD), harness side and ground.

YesGO to AP5.

NoREPAIR the circuit for high resistance. CLEAR theDTC. REPEAT the self-test.


2011 Mustang, 2/2011

PINPOINT TEST AP: DTC U3003:16 (FCIM) (Continued)AP4 CHECK THE FCIM VOLTAGE SUPPLY (Continued)


AP5 CHECK THE FCIM GROUND CIRCUIT FOR CONTINUITY

• Ignition OFF.• Disconnect: Negative Battery Cable.• Measure the resistance between the FCIM module C2402-4, circuit

GD115 (BK/GY), harness side and ground.


YesGO to AP6.

NoREPAIR the circuit for high resistance. TEST thesystem for normal operation.

AP6 CHECK FOR CORRECT FCIM OPERATION

• Disconnect the FCIM connector.• Check for:


• Connect the FCIM connector and make sure it seats correctly.• Is the concern still present?



Pinpoint Test AQ: DTC U3003:17 (Front Controls Interface Module (FCIM))

Normal Operation

• DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) — set by the Front Controls Interface Module (FCIM) when the supply voltage isgreater than 15.8 volts for more than 250 milliseconds during normal operation or the self-test.



• FCIM

PINPOINT TEST AQ: DTC U3003:17 (FCIM)NOTE: DTC U3003:17 may be stored in the module memory due to past battery charging or vehicle jump starting events.


2011 Mustang, 2/2011

PINPOINT TEST AQ: DTC U3003:17 (FCIM) (Continued)Test Step Result / Action to Take

AQ1 CHECK FOR HIGH VOLTAGE DTCs SET IN OTHER MODULES


one module?


NoGO to AQ2.

AQ2 CHECK THE BATTERY VOLTAGE




NoGO to AQ3.

AQ3 RECHECK FOR DTC U3003:17

• Turn the engine off.• Ignition ON.• Clear the FCIM DTCs.• Repeat the FCIM self-test.• Is DTC U3003:17 present?

YesINSTALL a new FCIM. REFER to Front ControlsInterface Module (FCIM) in this section. TEST thissystem for normal operation.

NoThe system is operating normally at this time. The DTCmay have been set previously during battery chargingor while jump starting the vehicle.

Pinpoint Test AR: DTC B1318 (Front Display Interface Module (FDIM))Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal Operation

• DTC B1318 (Battery Voltage Low) — set by the Front Display Interface Module (FDIM) when the supply voltage falls below 10 volts for greater than10 seconds during normal operation or during the self-test.




• FDIM

PINPOINT TEST AR: DTC B1318 (FDIM)NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.



AR1 RECHECK THE FDIM DTCs

• Clear the FDIM DTCs.• Ignition OFF.• Ignition ON.• Wait at least 15 seconds.• Repeat the FDIM self-test.• Is DTC B1318 still present?

YesGO to AR2.


AR2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM



NoGO to AR3.

AR3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE


2011 Mustang, 2/2011

PINPOINT TEST AR: DTC B1318 (FDIM) (Continued)AR3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE (Continued)



YesGO to AR4.


AR4 CHECK THE FDIM VOLTAGE SUPPLY

• Ignition OFF.• Measure and record the voltage at the battery.• Disconnect: FDIM.• Ignition ON.• Measure the voltage between the FDIM C2123-12, circuit SBP14 (BN/



YesGO to AR5.

NoREPAIR the circuit for high resistance. CLEAR theDTC. REPEAT the self-test.

AR5 CHECK THE FDIM GROUND CIRCUIT FOR CONTINUITY

• Ignition OFF.• Disconnect: Negative Battery Cable.• Measure the resistance between the FDIM C2123-8, GD116 (BK/VT)

harness side and ground.


YesGO to AR6.

NoREPAIR the circuit for high resistance. TEST thesystem for normal operation.

AR6 CHECK FOR CORRECT FDIM OPERATION

• Disconnect the FDIM connector.• Check for:


• Connect the FDIM connector and make sure it seats correctly.• Is the concern still present?



Pinpoint Test AS: DTC U3003:16 Global Positioning System Module (GPSM)Refer to Wiring Diagrams Cell 130, Audio System/Navigation for schematic and connector information.

Normal Operation


2011 Mustang, 2/2011

• DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) — set by the Global Positioning System Module (GPSM) when the supply voltagefalls below 10 volts for at least 10 seconds during normal operation, or for greater than 250 milliseconds during the self-test.




• GPSM

PINPOINT TEST AS: DTC U3003:16 Global Positioning System Module (GPSM)NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.



AS1 RECHECK THE GPSM DTCs

• Clear the GPSM DTCs.• Ignition OFF.• Ignition ON.• Wait at least 15 seconds.• Repeat the GPSM self-test.• Is DTC U3003:16 still present?

YesGO to AS2.


AS2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM



NoGO to AS3.

AS3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE



YesGO to AS4.


AS4 CHECK THE GPSM VOLTAGE SUPPLY

• Ignition OFF.• Measure and record the voltage at the battery.• Disconnect: GPSM C2300.• Ignition ON.• Measure the voltage between the GPSM C2123-1, circuit SBP14 (BN/



YesGO to AS5.

NoREPAIR the circuit in question for high resistance.CLEAR the DTC. REPEAT the self-test.

AS5 CHECK THE GPSM GROUND CIRCUITS

• Ignition OFF.• Disconnect: Negative Battery Cable.• Measure the resistance between theGPSM C2123-7, circuit GD115


YesGO to AS6.

NoREPAIR the circuit in question for high resistance.TEST the system for normal operation.


2011 Mustang, 2/2011

PINPOINT TEST AS: DTC U3003:16 Global Positioning System Module (GPSM) (Continued)AS5 CHECK THE GPSM GROUND CIRCUITS (Continued)


AS6 CHECK FOR CORRECT GPSM OPERATION

• Disconnect the GPSM connectors.• Check for:

— corrosion— pushed-out pins

• Connect all the GPSM connectors and make sure they seat correctly.• Is the concern still present?

YesINSTALL a new GPSM. REFER to Global PositioningSystem Module (GPSM) in this section. TEST thesystem for normal operation.


Pinpoint Test AT: DTC U3003:17 Global Positioning System Module (GPSM)

Normal Operation

• DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) — set by the Global Positioning System Module (GPSM) when the supplyvoltage is greater than 15.8 volts for more than 250 milliseconds during normal operation or the self-test.



• GPSM

PINPOINT TEST AT: DTC U3003:17 (GPSM)NOTE: DTC U3003:17 may be stored in the module memory due to past battery charging or vehicle jump starting events.


AT1 CHECK FOR HIGH VOLTAGE DTCs SET IN OTHER MODULES


one module?


NoGO to AT2.

AT2 CHECK THE BATTERY VOLTAGE




NoGO to AT3.

AT3 RECHECK FOR DTC U3003:17

• Turn the engine off.• Ignition ON.• Clear the GPSM DTCs.• Repeat the GPSM self-test.

YesINSTALL a new GPSM. REFER to Global PositioningSystem Module (GPSM) in this section. TEST thissystem for normal operation.


2011 Mustang, 2/2011

PINPOINT TEST AT: DTC U3003:17 (GPSM) (Continued)AT3 RECHECK FOR DTC U3003:17 (Continued)

• Is DTC U3003:17 still present? NoThe system is operating normally at this time. The DTCmay have been set previously during battery chargingor while jump starting the vehicle.


2011 Mustang, 2/2011

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