Control module JAGUAR XFR 2010 1.G Workshop Manual
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player is only compatible with standard CD's. All other versions of CD player are compatible with standard CDs and CDs with MP3 or WMA (windows media audio) files. 
 
A portable audio module allows for the connection of a range of portable audio devices to the car’s audio system. The portable 
audio module is controlled through the IAM (integrated audio module) and Touch-screen with play back through the car’s 
speaker system. The introduction of this system allows the user to import their personal portable media player to interface 
with the car, including iPod and other MP3 players, or USB mass storage devices such as memory sticks. MP3 players can also 
be controlled through the Touch-screen if they are configured as mass storage devices. Details of how to do this will be 
contained in the manufacturers instructions. 
 
The chosen audio device can be plugged into the car using an interface panel located in the floor console between the front 
seats. The interface includes a 3.5mm auxiliary jack-plug socket, a 12-volt power supply, a dedicated iPod connector with 
charging function, plus a USB2 connector which allows connectivity for a wide variety of USB devices. The USB port also 
provides a charging function although it does not support a USB hub. The maximum charging current supplied is 500ma. The 
user can connect an iPod and USB device at the same time, changing the source via the Touch-screen. The non selected source 
will still charge. 
 
The Jaguar Sound System is the basic audio system which comprises of an IAM (integrated audio module) with no external 
amplifier and 8 speakers. 
The Jaguar 320W Premium Sound System has the addition of an AUD 8 power amplifier and a 9 speaker system. 
 
The Bowers & Wilkins 440w Surround Sound System additions include an AUD 12 power amplifier, a Dolby Pro-Logic 2 7.1 
Surround Sound System, and 14 speakers. 
 
DAB (digital audio broadcasting) is available for most European markets and gives access to digital radio channels for better 
sound quality and enhanced functionality depending on local service availability. The DAB (digital audio broadcasting) module 
is located in the luggage compartment. The system receives reception signals from the following sources to ensure optimum 
signal strength. 
 
DAB band L antenna located in the roof pod antenna module 
DAB band III antenna located in the heated rear window. 
 
For NAS vehicles the digital format adopted is satellite radio which specifically links to the Sirius network. The system operates 
in the S-band frequency range, and as a result of the use of satellite transmission, has the ability to provide CD quality audio broadcasts over very large areas (typically continents). The satellite radio receiver is located in the luggage compartment. The 
system receives reception signals from the satellite radio antenna located in the roof pod module. 
 
Primary user control of the audio system is via the ICP (integrated control panel) and the Touch-screen which are located in the 
center of the instrument panel. Control signals from the ICP (integrated control panel) are relayed on the medium speed CAN 
(controller area network) bus to the ICM (information control module). The ICM (information control module) relays the control 
signals to the rest of the audio system on the MOST (media oriented systems transport) ring. The ICM (information control 
module) is the timing master for the MOST (media oriented systems transport) ring and also hosts a gateway function between 
the medium speed CAN bus and the MOST (media oriented systems transport) ring. Audio output signals on the Jaguar 320W Premium Sound System and Bowers & Wilkins 440W Surround Sound System are sent on the MOST (media oriented systems 
transport) ring from the IAM (integrated audio module) to the power amplifier for speaker output. www.JagDocs.com 
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Published: 11-May-2011 
Information and Entertainment System - Audio System - System Operation 
and Component Description 
Description and Operation 
 
Control Diagram 
 
NOTE: A = Hardwired; N = Medium Speed CAN (controller area network) bus; O = LIN bus; P = MOST ring; T = Coaxial 
 
 
 
Item Description 1 Battery 2 BJB (battery junction box) 3 RJB (rear junction box) 4 CJB (central junction box) 5 ICM (information control module) 6 ICP (integrated control panel)  
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8 Clock spring 9 Steering wheel remote audio controls 10 Portable audio interface panel 11 Microphone 12 Touch-screen 13 Power amplifier 14 Diversity antenna module 15 IAM (integrated audio module) 16 DAB receiver/Satellite Radio receiver (Note: There is no co-axial link from the diversity antenna module to the satellite radio receiver) 17 Roof pod  
 
Item Description 1 Navigation computer (Optional) 2 DAB (digital audio broadcasting) radio receiver (Optional - Europe only)  
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3 Satellite Radio digital receiver (Optional - NAS only) 4 Telephone control module (Optional) 5 Touch-screen 6 TV tuner (Optional) 7 Power amplifier (Not fitted to the Jaguar Sound System) 8 IAM (integrated audio module) 9 Portable audio module (Optional) 10 ICM (information control module)  
 
 
AUDIO SYSTEM OPERATION System Operation 
 
The components of the audio/infotainment system are all connected on the MOST (media orientated systems transport) ring. 
The MOST (media orientated systems transport) ring is a fibre optic communications bus for multimedia applications. Audio   
and control information is passed around the MOST (media orientated systems transport) ring and can be picked up by any of 
the systems units. For example, radio station tuning/selection input by the vehicle user into the Touch-screen is sent along the 
MOST (media orientated systems transport) ring and collected by the IAM (integrated audio module) which then selects the 
requested radio station. 
 
MOST (media orientated systems transport) technology uses a plastic optical fibre which forms a network connecting the audio 
and multimedia system components. Each component in the ring is connected to the plastic optical fibre through a device 
known as a FOT (fibre optical transceiver). Each FOT (fibre optical transceiver) has two optical connections; one connection is 
sensitive to light and is the input, the second connection forms the light source and is the output. The system operates by 
connecting the output from one FOT (fibre optical transceiver) to the input of another FOT (fibre optical transceiver). 
The light signals are sent in one direction only and are formed in the following way: 
Electrical signals are converted into an electrical current 
The current then drives an LED (light emitting diode) in the FOT (fibre optical transceiver) to produce a high intensity 
red light 
The LED transmits the light through a fibre optic cable A photo diode in the FOT (fibre optical transceiver) at the opposite end of the fibre optic cable detects the light. 
The following components may be connected to the MOST ring dependant on the vehicle equipment level: 
IAM (integrated audio module) 
Touch-screen 
ICM (information control module) 
DAB (digital audio broadcasting) radio receiver (Optional - Europe only) 
Satellite radio digital receiver (Optional - NAS only) 
Power amplifier (Not fitted to the Jaguar Sound System) 
Portable audio module (Optional) 
Telephone control module (Optional) 
Navigation computer (Optional) 
TV tuner (Optional) 
 
 
NOTE: Do not view the red light directly 
 
MOST is a synchronous network. A timing master supplies the clock information and all other devices on the network 
synchronize their operation to this clock. The timing master for the MOST (media orientated systems transport) network on this 
vehicle is the ICM (information control module). This unit also controls and manages the MOST (media orientated systems 
transport) ring and the system components. 
 
An Optical Bus tester is used in conjunction with the Jaguar diagnostic system to diagnose the MOST (media orientated 
systems transport) system. The Optical Bus tester emits a visible, high intensity red light which can be connected into the ring 
at any point to test the ring integrity. Disconnecting a MOST (media orientated systems transport) connector will reveal if the 
high intensity red light is visible. 
 
If a break occurs in the MOST (media orientated systems transport) ring fault codes are stored in the ICM (information control 
module) which can be retrieved using the Jaguar diagnostic system equipment. 
 
With reference to the audio system information and signal transfer the instrument cluster is the gateway between the high 
and medium speed CAN bus communication protocols. The ICM (information control module) is the gateway between medium speed CAN and the MOST (media orientated systems transport) systems.  
A typical example of information transfer is vehicle speed information from the ABS (anti-lock brake system) module used to 
control the automatic volume control function. The vehicle speed information from the ABS module is sent on the high speed  CAN network and collected by the instrument panel gateway. The signal is passed to the medium speed CAN network and onto the ICM (information control module) gateway. The ICM (information control module) calculates the volume adjustment 
required. The corrected audio volume level signal is sent on the MOST (media orientated systems transport) network to the  
IAM (integrated audio module) or Power amplifier (dependant on vehicle equipment level) for output to the speaker system.  
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systems. 
 
A typical example of information transfer is vehicle speed information from the ABS (anti-lock brake system) module used to 
control the automatic volume control function. The vehicle speed information from the ABS module is sent on the high speed  
CAN network and collected by the instrument panel gateway. The signal is passed to the medium speed CAN network and onto the ICM gateway. The ICM calculates the volume adjustment required. The corrected audio volume level signal is sent on the 
MOST network to the IAM or Power amplifier (dependant on vehicle equipment level) for output to the speaker system. 
 
AUDIO SYSTEM USER CONTROLS 
 
Touch-Screen 
 
 
 
Item Description 1 Touch-screen 2 Home menu button 3 Touch-screen on/off button The Touch-screen forms the basis of the audio system. It communicates with the rest of the audio/infotainment system on the 
MOST ring and allows control of the audio system and other infotainment systems from a single point. 
 
The Touch-screen communicates with the IAM on the MOST ring and provides the primary user interface and display of the 
audio system controls. No configuration procedure is required if the touch-screen is replaced. 
 
Calibration of the Touch-screen using the Jaguar approved diagnostic equipment enables updates to be downloaded as new 
technology becomes available or any fault concerns require software updates. 
The touch-screen provides user control of the following systems: 
 
System Functions Audio Radio display AM/FM or DAB, auxiliary and portable audio, digital TV or CD (compact disc) Climate 
control Air conditioning, distribution, seats, heated steering wheel, automatic air recirculation Telephone Digit dialer, phone book, last ten calls (made, received, missed) Navigation Destination, stored locations, navigation setup, route options Vehicle 
Security, parking, valet mode, trip computer, clock, brightness, contrast, system settings, vehicle settings, display settings  
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1 Volume adjustment 2 Change pre-set radio stations or CD tracks 3 Select audio source 4 Audio mute control/JaguarVoice control Additional control of the audio system is available in the form of steering wheel mounted switches which are located on the 
left hand side of the steering wheel. The four switches provide for volume adjustment, change pre-set radio stations or CD tracks, select audio source and finally audio mute control. The mute control is also used for JaguarVoice control. 
 
The steering wheel audio control switches are hardwired through the clock spring to the ICM. The ICM processes the analogue 
signals from the switches into digital signals. The digital signals are then passed from the ICM onto the MOST system to 
control the requested audio functions. 
 
AVC (automatic volume control) controls the audio volume in relation to vehicle speed. As vehicle speed increases the audio 
level is adjusted to compensate for extra road and vehicle noise. There are three settings for AVC: 
 
Low 
Medium 
High 
Setting of the AVC level is made using the audio controls. The default setting is medium. 
 
The vehicle speed signal is used to enable the ICM to calculate the volume adjustment required. The vehicle speed signal is 
received over the CAN. The signal is an average of the four wheel speed sensor signals. Should an invalid speed signal be received the AVC will not alter the output volume. 
 
 
 
INTEGRATED AUDIO MODULE Component Description 
 
 
 
The IAM is located in the center console behind the ICP faceplate, and combines the radio tuner and CD player. The head unit controls which of the two sources is routed to the speakers. All tuner versions have AM/FM reception. Each audio system 
features auto-store, with a press and hold function to store selected channels as pre-sets. The standard search facility finds 
the nine strongest channels currently available, while search and manual tuning allow channels to be stored as above. 
 
The Jaguar Sound System IAM uses an internal amplifier which directly drives the system speakers. The Jaguar 320W Premium 
Sound System and Bowers & Wilkins 440W Surround Sound System differs from the Jaguar Sound System with the addition of 
an external amplifier. Audio output signals from the IAM are sent on the MOST system to the external amplifier which drives 
the system speakers.  
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7 Triple TV antenna module 8 RF filter The diversity antenna module, located on the left hand side of the heated rear window, receives signals from four antennas 
located in the heated rear window, where one antenna is dedicated as an AM antenna. 
 
The diversity tuning system ensures that the strongest signals are used by the radio system to ensure the best possible FM 
reception. Using the three remaining receiving antennas serves to eliminate multipath signal distortion. Typically, the signal 
from the antenna with the least noise is chosen, and the other antennas are ignored. 
 
The diversity antenna module is an interface between the antenna aerials in the heated rear window and audio system 
modules/tuners. It provides antenna signals to the AM/FM tuner in the IAM, to the DAB receiver and to the VICS (vehicle 
information and communication systems) or TMC (traffic message channel) in the navigation computer. 
 
There are three different types of diversity antenna module fitted depending on the vehicle market and infotainment 
equipment specification: 
AM/FM with one co-axial output 
AM/FM and VICS/TMC with two co-axial outputs 
AM/FM, VICS/TMC and DAB band III with three co-axial outputs 
The diversity antenna module receives a power supply from the IAM. 
 
Vehicle or other component generated electromagnetic interference may cause unwanted disturbances in the radio and TV 
reception signals. The disturbance may interrupt, obstruct, or otherwise degrade or limit the effective performance of the 
circuit. It frequently affects the reception of AM radio in urban areas and can also affect FM radio and television reception, 
although to a lesser extent. 
 
The RF filters, which act as RF isolators, are located on both sides of the heated rear window and are used to reduce the 
electromagnetic interference. The left hand side RF filter is connected across the heated rear window power supply and used to 
separate the DC (direct current) interference from the RF signals. The right hand side RF filter is used in conjunction with the  
TV antenna module (if fitted). If the TV system is not fitted the filter is linked directly to ground. 
 
INFORMATION CONTROL MODULE 
 
 
 
The ICM is located beneath the IAM in the center console. The unit performs a range of infotainment and some climate-control 
functions. 
 
The ICM, which is the timing master of the MOST system; supplies clock information to all other devices on the network which 
synchronize their operation to this clock. 
 
The unit also controls and manages the MOST ring and provides the allocations of channels, system power management, 
functionality and co-ordination of the other system components. 
 
The system becomes operational when the vehicle is unlocked and a 'wake up' signal is received by the ICM on the medium 
speed CAN. The ICM 'wakes up' all the control modules on the MOST system ready for immediate operation by the vehicle user. If the ICM is replaced it must be configured as a new module using the Jaguar approved diagnostic equipment. 
 
Calibration of the ICM using the Jaguar approved diagnostic equipment enables updates to be downloaded as new technology 
becomes available or any fault concerns require software updates.  
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controlled through the device itself. 
 
 
NOTE: The system will support devices with a storage capacity up to 256 GB which is approximately 65,000 audio tracks. 
 
The wiring link harness between the portable audio module and interface panel consists of hardwired and digital connections  
for data and signal exchange. The MOST carries the communication signals and information between the portable audio module 
to the IAM and touch-screen. Audio output to the speaker system is controlled by the IAM or power amplifier depending on the 
audio system specification. 
 
POWER AMPLIFIER 
 
 
The audio system has three amplification options dependant on the audio system specification: 
IAM internal amplifier 
Alpine AUD 8 
Alpine AUD 12 
 
The power amplifier is located in the left hand side of the luggage compartment and is connected to the audio system via the 
MOST bus. Speaker connections are hardwired. 
If the power amplifier is replaced it must be configured as a new module using the Jaguar diagnostic equipment. 
 
Calibration of the power amplifier using the Jaguar approved diagnostic equipment enables updates to be downloaded as new 
technology becomes available or any fault concerns require software updates. 
 
DIGITAL AUDIO BROADCASTING 
 
DAB is a digital radio network designed to provide reliable, multi-service broadcasting for reception by mobile, portable and 
fixed receivers. 
 
DAB provides a clear signal with minimal interference, hiss or fading. After a channel (or station) has been tuned and stored, it 
does not need retuning. 
 
 
NOTE: Radio signals travel in a straight line so large obstacles, such as tall buildings, can shield the vehicle from the 
signal causing temporary loss of reception (known as dead spots). 
 
Digital radio is transmitted from regional terrestrial transmitters. Some local digital radio channels are not available outside 
the range of a transmitter. To receive new local channels during vehicle movement around a country, the auto-tune function is 
used to build new channel lists.  
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NOTE: When the vehicle DAB radio is first used the system will not receive any digital stations until the auto-tune 
function has been completed. 
 
Digital radio channels are organized into groups called ensembles (also known as multiplexes). Some individual channels may 
also provide a number of subchannels. For example, if several sports events are being held simultaneously, the channel may 
temporarily choose to broadcast each different event on a separate subchannel. 
 
DAB is broadcast across Europe, Canada and parts of Asia. System transmission is via a terrestrial network, on two separate 
broadcasting bands: 
 
DAB band-L 
DAB band III 
 
The DAB system requires additional components to be added to the audio system. DAB antennas and a receiver are fitted to 
allow reception of the service. 
 
Operation of the DAB system is the same as the radio operation with selections made through the touch-screen and ICP to 
access and navigate the system functions. 
 
The DAB receiver is a dedicated tuner which is controlled by the ICM on the MOST ring. The receiver processes the signals from 
the DAB antennas. Information is transmitted on the MOST ring and processed by the ICM. The processed information is sent 
out to the power amplifier or IAM (with internal amplifier) and broadcast through the speaker system. 
 
No configuration procedure is required if the DAB receiver is replaced. Calibration of the DAB receiver using the Jaguar 
approved diagnostic equipment enables updates to be downloaded as new technology becomes available or any fault concerns 
require software updates. 
Digital Audio Broadcasting Antennas 
 
 
 
Item Description 1 Roof pod 2 Diversity antenna module The DAB band III antenna is located in the heated rear window and is part of the diversity antenna module circuit. The two 
antenna circuits each have a co-axial connection to the DAB module. 
 
DAB signals are transmitted on either DAB band III (174 - 240 MHz) or DAB band-L (1452 - 1492 MHz). Some countries may 
only use the band III signals, while others may only use the band-L signals. Some countries use both frequency ranges within 
the same geographical area. The type of DAB signal received depends on the vehicle market location. 
 
The DAB antennas are designed with 50 ohm output impedance. The DAB receiver is fitted with 50 ohm fakra II connectors to 
ensure compatibility with the antenna. For optimum performance 50 ohm low loss coaxial cable is used between the antenna 
and receiver.  
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Information and Entertainment System - Speakers - System Operation and
Component Description
Des cript ion and Operat ion
Control Diagram
• NOTE: A = Hardwi red
CONTROL DIAGRAM - JAGUAR SOUND SY STEMItemDescription
Bat tery
BJB (batt ery junct ion box)
RJB (rear junct ion box)
IAM (i nt egrat ed audi o module)
RH (right -hand) rear mid-bass  speakerRH rear t weet er s peakerRH front mid-bas s  s peakerRH front tweet er s peaker
LH (l eft -hand) front  mid-bas s  s peakerLH front  t weeter s peaker