Information System & Entertainment System: Overview Ford Fiesta Mk6

Normal Operation

The antenna receives AM and FM radio waves and sends them to the Audio Control Module (ACM) through the antenna cable. The ACM powers the antenna in order to amplify the AM signal.

1. DTC B1A56:1D (Antenna: Circuit Current Out of Range) - sets continuously when the antenna enable circuit current is outside of limits. The current is checked once every 5 seconds.
2. DTC B1A56:21 (Antenna: Signal Amplitude [] Minimum) - sets on-demand when no signal is detected from the antenna.

This pinpoint test is intended to diagnose the following

1. Antenna
2. Antenna cable
3. Charging system
4. Ignition system
5. ACM

Digital signals are received by the satellite radio antenna and sent to the Audio Control Module (ACM) through the satellite radio antenna cable.

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 from the 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. Make sure the vehicle is in a clear area, free of obstructions, before testing satellite radio reception.

1. DTC B1A89:11 (Satellite Antenna: Circuit Short to Ground) - sets when the satellite radio antenna circuit is shorted to voltage or ground for greater than 250 ms. This DTC can be either continuous or on-demand.
2. DTC B1A89:13 (Satellite Antenna: Circuit Open) - sets when an open is detected in the satellite radio antenna circuit for greater than 250 ms. This DTC can be either continuous or on-demand.

This pinpoint test is intended to diagnose the following

1. Obstructions to the antenna line of sight
2. No channel found in the selected category
3. Antenna
4. Antenna cable
5. ACM

Digital signals are received by the antenna and sent to the Audio Control Module (ACM) through the satellite radio antenna. The satellite radio 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 Vehicle Identification Number (VIN). As a result, the ACM cannot be swapped from one vehicle to another.

1. DTC U3000:96 (Control Module: Component Internal Failure) - sets when the ACM detects an internal failure with the built-in satellite radio receiver.

This pinpoint test is intended to diagnose the following

1. Subscription status
2. Satellite radio system concern
3. ACM

A reference voltage is sent from the appropriate module to the steering wheel controls. When a switch is pressed, the voltage is routed through a specific resistor value for each function, then to ground through the module. The module uses this voltage signal to determine which control input function has been selected.

All switches are wired to the Front Control/Display Interface Module (FCDIM) except for the VOICE switch, which is wired directly to the Accessory Protocol Interface Module (APIM) for vehicles with the SYNC system. If the VOICE switch is inoperative, the entire voice recognition system is inoperative. To diagnose this concern, go to PINPOINT TEST I .

1. B10BD:11 (Multifunctional Switch: Circuit Short to Ground) - sets when a short to ground is detected in the steering wheel controls circuit.
2. B10BD:13 (Multifunctional Switch: Circuit Open) - sets when an open is detected in the steering wheel controls circuit.
3. B10BD:23 (Multifunctional Switch: Signal Stuck Low) - sets in continuous memory when the FCDIM detects a steering wheel controls switch stuck for more than 2 minutes during normal operation.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Steering wheel controls
3. Clockspring
4. ACM

Normal Operation - Vehicles Without the SYNC System

Audio 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.

The Audio Control Module (ACM) directs audio signals to the speakers in the form of a fluctuating AC voltage. The ACM has an overload protection function that protects the ACM if an over-current condition is present. As a result, if there is a short to ground on the circuitry to any of the interior speakers, the ACM can mute the sound to all of the interior speakers.

FAULT TRIGGER CONDITIONS AND DTC CHART

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Speaker
3. ACM

The Audio Control Module (ACM) receives the START signal through the Controller Area Network (CAN). When it receives this signal, it mutes the audio output to prevent voltage spikes from producing a popping noise through the speakers during engine cranking.

If the ACM loses power or ground, the scan tool cannot communicate with it. Refer to MODULE COMMUNICATIONS NETWORK to continue diagnosis.

If a speaker fault DTC is set in the ACM , the cause of the concern is likely a short to ground or short to voltage in the circuitry to an individual speaker, which has caused the ACM overload protection to activate.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. ACM

The Universal Serial Bus (USB) port is connected to the Accessory Protocol Interface Module (APIM) through a 2-piece USB cable. The USB port can be used to play audio files or upload software from mass storage devices, or for connecting a media device.

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 system does 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 Digital Rights Management (DRM) protection. This is normal operation.

The USB cable and port are not serviceable separately.

1. 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 the USB cable or port, or by the customer USB device.
2. DTC B1252:11 ( USB Port: Circuit Short to Ground) - sets when the APIM detects a short to ground in the USB circuit.

This pinpoint test is intended to diagnose the following

1. Customer USB device
2. USB cable and port
3. APIM

When the VOICE switch is pressed, it changes a reference voltage signal and the audio system enters voice recognition mode. The VOICE switch is wired to the Accessory Protocol Interface Module (APIM). The microphone receives the voice command and sends a signal to the APIM . The microphone is also used to detect outgoing audio during a phone call.

1. DTC B1201:1C (Steering Wheel Audio Switch Pack 2: Circuit Voltage Out of Range) - sets when the APIMM detects the VOICE switch circuit out-of-range for greater than 250 ms.
2. DTC B1201:63 (Steering Wheel Audio Switch Pack 2: Circuit/Component Protection Time-Out) - sets when the APIM detects the VOICE switch stuck within range for greater than 120 seconds during normal operation, or for greater than 3 seconds during the on-demand self-test.
3. DTC B1D79:01 (Microphone Input: General Electrical Failure) - sets during the on-demand self-test if the APIM does not detect the microphone.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Steering column multifunction switch
3. Microphone
4. APIM

The Accessory Protocol Interface Module (APIM) transmits left and right channel analog audio signals to the Audio Control Module (ACM). These signals include inputs from the Universal Serial Bus (USB) port, the audio input jack, and a Bluetooth® media device.

If a USB mass storage device is used to play an audio file, the SYNC system only plays audio files that do not have Digital Rights Management (DRM) protection.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. ACM
3. APIM

With the ignition in RUN or ACC, the audio system can be powered on. When the ON button is pressed on the Front Controls Interface Module (FCIM) (or the ignition is turned to RUN or ACC and the audio system was on when the ignition was turned off), a wake-up signal is provided to the Front Control/Display Interface Module (FCDIM) via the dedicated Local Interconnect Network (LIN) line. The FCDIM then broadcasts a message over the Infotainment Controller Area Network (ICAN) to the other modules in the audio system.

When a button is pressed on the FCIM , there is a corresponding display on the FCDIM . The FCDIM displays base audio system information, warning message and icons, SYNC information (if equipped), and satellite radio information (if equipped). The information is sent to the FCDIM via the MS-CAN .

This pinpoint test is intended to diagnose the following

1. Communication network concern
2. FCIM
3. FCDIM
4. ACM

The Front Control/Display Interface Module (FCDIM) receives the illumination signal from the Body Control Module (BCM) and dims the illumination based on the position of the dimmer switch. In the event this signal is lost, the FCDIM defaults to full nighttime brightness, resulting in a symptom of the FCDIM being unable to dim.

This pinpoint test is intended to diagnose the following

1. Backlighting system concern
2. FCDIM

The Accessory Protocol Interface Module (APIM) takes action based on network message it receives from other audio system modules, and from the VOICE switch (part of the multifunction switch). The APIM sends display data to the Front Control/Display Interface Module (FCDIM) in order to update the display screen.

This pinpoint test is intended to diagnose the following

1. Audio system concern
2. Communication network concern
3. Customer error
4. Customer device

When a new Bluetooth® device is added, the Accessory Protocol Interface Module (APIM) and the Bluetooth® device must be paired together. Most Bluetooth® devices can pair with the SYNC system, although functionality varies. To determine if a Bluetooth® device is supported, retrieve the Consumer Interface Processor (CIP) software level using the ACCESSORY PROTOCOL INTERFACE MODULE (APIM) SOFTWARE LEVEL CHECK in this information, and verify the customer device is 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 a unique Personal Identification Number (PIN) that must be entered on the Bluetooth® device in order for the pairing process to be successful. There are also some device-specific actions that must take place. For additional information on the pairing process, refer to the Owner's Literature.

This pinpoint test is intended to diagnose the following

1. Incompatible Bluetooth® device
2. Customer error
3. Customer Bluetooth® device
4. APIM

The Text-To-Speech (TTS) and voice prompt features speak certain text information and interaction requests in order to minimize driver distraction while driving. 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 to the Owner's Literature for further information on voice interaction.

The audio signals for the TTS and voice prompt features, the ringtones, and audio from an outside device during a phone call, are sent from the Accessory Protocol Interface Module (APIM) to the Audio Control Module (ACM).

This pinpoint test is intended to diagnose the following

1. Customer setting
2. Wiring, terminals or connectors
3. ACM
4. APIM

Several audio system modules receive network messages from the Body Control Module (BCM) via the Medium Speed Controller Area Network (MS-CAN). The following information is included in the messages

1. Light and chime request
2. Illumination dimmer control

As more than one module receives these messages, all modules receiving a particular message should exhibit a symptom if the message is missing.

1. DTC U0140:00 (Lost Communication With Body Control Module: No Sub Type Information) - set by the Audio Control Module (ACM), the Front Control/Display Interface Module (FCDIM), the Accessory Protocol Interface Module (APIM), or the Global Positioning System Module (GPSM) when network messages are missing from the BCM for greater than 5 seconds with the ignition in RUN.

This pinpoint test is intended to diagnose the following

1. Communication network concern
2. Audio system concern
3. BCM

1. DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) - set by the Audio Control Module (ACM) as a continuous or on-demand DTC when 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.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. High circuit resistance
3. ACM

1. DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) - set by the Audio Control Module (ACM) when the supply voltage is greater than 15.8 volts for more than 250 milliseconds during normal operation or the self-test.

This pinpoint test is intended to diagnose the following

1. Charging system concern
2. ACM

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

1. Date/time data
2. Ignition switch position
3. Vehicle speed data
4. Warning indicator status

As more than one module receives these messages, all modules receiving a particular message can exhibit a symptom if the message is missing.

1. DTC U0155:00 (Lost Communication With Instrument Panel Cluster ( IPC ) Control Module: No Sub Type Information) - set by the Front Control/Display Interface Module (FCDIM), the Accessory Protocol Interface Module (APIM), or the Global Positioning System Module (GPSM) when network messages are missing from the IPC for greater than 5 seconds with the ignition in RUN.

This pinpoint test is intended to diagnose the following

1. Communication network concern
2. Audio system concern
3. IPC

All of the displays on the Front Control/Display Interface Module (FCDIM) screen are controlled through network messages. The modules sending display data to the FCDIM are

1. Audio Control Module (ACM): audio system information (including satellite radio information)
2. Instrument Panel Cluster (IPC): warning messages and indicators
3. Accessory Protocol Interface Module (APIM): SYNC system information

If the FCDIM loses the signal from any of these modules, only those specific displays are inoperative.

This pinpoint test is intended to diagnose the following

1. Communication network concern
2. ACM
3. IPC
4. APIM (if equipped)
5. FCDIM

The speed sensitive volume function adjusts the volume based on the Vehicle Speed Sensor (VSS) signal, which is received over the Controller Area Network (CAN) Other modules also receive this signal and should exhibit symptoms if the signal is lost.

This pinpoint test is intended to diagnose the following

1. Speed sensitive volume setting
2. VSS signal concern
3. Communication network concern
4. ACM

Several audio system modules receive network messages from the Audio Control Module (ACM). These messages consist mainly of audio setting information.

As more than one module receives each of these messages, all modules receiving a particular message can exhibit a symptom if the message is missing.

1. DTC U0184:00 (Lost Communication With Radio: No Sub Type Information) - set by the Accessory Protocol Interface Module (APIM) when network messages are missing from the ACM for greater than 5 seconds with the ignition in RUN.
2. DTC U0193:00 (Lost Communication With "Digital Audio Control Module A": No Sub Type Information) - set by the Front Control/Display Interface Module (FCDIM) when network messages are missing from the ACM for greater than 5 seconds with the ignition in RUN.

This pinpoint test is intended to diagnose the following

1. Communication network concern
2. Audio system concern
3. ACM

The Front Controls Interface Module (FCIM) exchanges information with the Front Control/Display Interface Module (FCDIM) over the Local Interconnect Network (LIN). This information includes (among others) button press data and display data.

1. DTC U1A00:00 (Private Communication Network: No Sub Type Information) - sets when the FCDIM does not receive information from the FCIM over the LIN for greater than 2 seconds. This does not necessarily indicate a fault in the LIN wiring, as a loss of power or ground to the FCIM can also cause a lack of communication.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. FCIM
3. FCDIM

The 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 can exhibit a symptom if the message is missing.

1. DTC U0100:00 (Lost Communication With ECM /PCM "A": No Sub Type Information) - set by the APIM when it is missing messages from the PCM over the HS-CAN for greater than 5 seconds with the ignition in the RUN position.

This pinpoint test is intended to diagnose the following

1. Communication network concern
2. PCM

The Accessory Protocol Interface Module (APIM) receives the emergency call notification message from the Restraints Control Module (RCM) via the High Speed Controller Area Network (HS-CAN). The APIM uses this message to activate the emergency call system.

As other modules outside of the audio system also receive this message, all modules receiving it can exhibit a symptom if the message is missing.

1. DTC U0151:00 (Lost Communication With Restraints Control Module: No Sub Type Information) - set by the APIM when it is missing the air bag deployment notification message from the RCM over the HS-CAN for greater than 5 seconds with the ignition in the RUN position.

This pinpoint test is intended to diagnose the following

1. Communication network concern
2. Restraints system concern

1. DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) - set by the Accessory Protocol Interface Module (APIM) when the supply voltage falls below 10 volts for at least 10 seconds during normal operation, or for more than 250 ms during the self-test.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. High circuit resistance
3. APIM

1. DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) - set by the Accessory Protocol Interface Module (APIM) when the supply voltage is greater than 15.8 volts for greater than 250 milliseconds during normal operation or the self-test.

This pinpoint test is intended to diagnose the following

1. Charging system concern
2. APIM

1. DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) - set by the Front Control/Display Interface Module (FCDIM) when the supply voltage falls below 9 volts for greater than 1 second during normal operation.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. High circuit resistance
3. FDIM

1. DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) - set by the Front Control/Display Interface Module (FCDIM) when the supply voltage is greater than 16 volts for greater than 1 second during normal operation.

This pinpoint test is intended to diagnose the following

1. Charging system concern
2. FCDIM

1. DTC U3003:16 (Battery Voltage: Circuit Voltage Below Threshold) - set by the Global Positioning System Module (GPSM) when 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.

This pinpoint test is intended to diagnose the following

1. Wiring, terminal or connectors
2. High circuit resistance
3. GPSM

1. DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) - set by the Global Positioning System Module (GPSM) when the supply voltage is greater than 15.8 volts for greater than 250 milliseconds during normal operation or the self-test.

This pinpoint test is intended to diagnose the following

1. Charging system concern
2. GPSM