phone JAGUAR XFR 2010 1.G Owner's Manual

NO SPEECH
DETECTED None
Jaguar Voice system is expecting a voice
command . Repeat required voice command. STORING None
Jaguar Voice system is storing input telephone information. None COMMAND
CANCELLED None
Jaguar Voice button has been pressed
and held. Previous command cancelled. SEARCHING None
Jaguar Voice system is searching for requested information from phone book. None HOLD BUTTON TO CANCEL None
Jaguar Voice system has requested a
command to be cancelled. None FUEL LEVEL LOW
Amber warning triangle
illuminated LCD. Fuel level in fuel tank has fallen below
low fuel warning limit. Replenish fuel tank. FUEL PUMP
SYSTEM FAULT Amber warning triangle
illuminated LCD. Fuel pump or FPDM fault has occurred.
Investigate cause of fault. Interrogate
ECM for faults and diagnose using an approved Jaguar Diagnostic System. WASHER FLUID
LOW Amber warning triangle
illuminated LCD. Fluid level has fallen below low level
switch in windshield washer reservoir. Replenish reservoir. DOOR OPEN
Red text is illuminated in
LCD and vehicle view Door is open or incorrectly closed. Close open door. showing open luggage
compartment lid is
displayed. BOOT OPEN
Red text is illuminated in
LCD and vehicle view Luggage compartment lid is open or incorrectly closed. Close open luggage compartment lid. showing open door location
is displayed. COLUMN ADJUST None
Manual column adjust has been selected
on steering column adjustment switch. None COLUMN ADJUST
AUTO None
Automatic column adjust has been
selected on steering column adjustment
switch. None MEMORY 1 / 2 / 3 / 4 SETTINGS
RECALLED None
Memory button has been pressed to
recall memory positions for seat, steering column and mirrors. None MEMORY 1 / 2 / 3 / 4 SETTINGS
SAVED None
Memory has been saved for one of the
memory button positions. None SEAT BELT
MINDER None
Engine has been started and driver
and/or front passenger seat belt has not
been fastened. Fasten seat belt(s). CHECK
PEDESTRIAN
SYSTEM Red warning triangle
illuminated in LCD. A fault has occurred with the pedestrian
protection system. Investigate cause of fault. Interrogate
pedestrian protection system control
module for faults and diagnose using
an approved Jaguar Diagnostic System. INERTIA SWITCH TRIPPED Amber warning triangle
illuminated LCD. Message appears when the crash status
signal from the RCM (restraints control
module) changes to crash detected or a
fault in the restraints system prevents
the message from being transmitted. RCM can be rest with an ignition on/off cycle. If fault has occurred, then
investigate cause of fault and
interrogate the RCM for faults and diagnose using an approved Jaguar
Diagnostic System. VALET MODE None
Confirmation that valet mode has been
entered. None VEHICLE ARMED None
Confirmation that alarm and
immobilization has been achieved. None SMART KEY NOT
FOUND PLEASE
INSERT IN SLOT Red warning triangle
illuminated in LCD. Smart key has not been detected by the
passive system inside the vehicle. Smart key not present in vehicle. May
be caused by a flat smart key battery.
Replace internal battery in smart key.
May also be due to a communications problem. CHECK SMART
KEY None The smart key detected is not the
correct smart key for the vehicle. Use the correct smart key coded to the
vehicle. REMOVE SMART
KEY None
Smart key is in the start control module
and has been recognized by the passive
start system. Remove smart key from the start
control module. SMART KEY
BATTERY LOW None
Battery voltage in smart key is
becoming low, resulting in a decrease in
effective range of the smart key
transmitter. Replace smart key internal battery. PRESS BRAKE
WHEN STARTING None The stop/start button has been pressed
without the brake pedal depressed. This
will turn on the ignition power mode 6. To start engine, press brake pedal,
then press stop/start button. GEARBOX NOT IN
PARK None The transmission is not in the 'park'
position. Engine starting will be prohibited until 'park' is selected. Put transmission in the park position. www.JagDocs.com

Published: 11-Jul-2014
Information and Entertainment System - General Information - Information
and Entertainment System
Diagnosis and Testing

Principle of Operation

For a detailed description of the Information and Entertainment System, refer to the relevant Description and Operation
sections in the workshop manual. REFER to: (415-01A Information and Entertainment System)

Audio System (Description and Operation), Audio System (Description and Operation), Audio System (Description and Operation).
Inspection and Verification


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.
1. Verify the customer concern.

2. Visually inspect for obvious signs of damage and system integrity.

Visual Inspection
Mechanical Electrical
Information and entertainment module
Audio amplifier module
Integrated audio module
Portable audio interface module
Digital audio broadcast module
Integrated control panel
Touch screen display
Satellite radio module
Television module
Navigation system module
Telephone module
Compact disc player jammed, not loading
Scratched/dirty compact discs
Speakers
Fuses
Loose or corroded connector(s)
Information and entertainment module
Audio amplifier module
Integrated audio module
Portable audio interface module
Digital audio broadcast module
Integrated control panel
Touch screen display
Satellite radio module
Television module
Navigation system module
Telephone module
Speakers
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. If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the relevant DTC Index.

Symptom Chart

Symptom Display Possible Causes Action Poor audio quality (all
sources) Display normal
MOST harness
connections loose
MOST harness
connections
contaminated
MOST harness
misrouted
- Too many
bends
- Bend radius
less than
25mm
Check MOST harness connectors for
security
Check MOST harness connectors for
contamination
Check the routing of the MOST harness Information and
entertainment system
inoperative Touch screen blank or
displaying a flashing
logo
MOST network fault
REFER to: Communications Network (418-00 Module Communications Network,
Diagnosis and Testing).
DTC Index

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Section 100-00. REFER to:
(100-00 General Information)

Published: 11-May-2011
Information and Entertainment System - General Information - Cellular
Phone
Diagnosis and Testing

Principle of Operation

For a detailed description of the Cellular Phone System, refer to the relevant Description and Operation sections in the
workshop manual.

Inspection and Verification


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.
1. Verify the customer concern.
2. Visually inspect for obvious signs of damage and system integrity.

Visual Inspection
Mechanical Electrical
Microphone
Bluetooth antenna
Electrical connectors
Wiring harness for damage or corrosion
Fuses
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. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for
Diagnostic Trouble Codes (DTCs) and refer to the relevant DTC Index.
Symptom Chart

Symptom Action Unable to pair
GO to Pinpoint Test A. Not Auto Connecting
GO to Pinpoint Test B. No Audio to 3rd Party
GO to Pinpoint Test C. No Audio from 3rd Party
GO to Pinpoint Test D. No Audio
GO to Pinpoint Test E. DTC Index


CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part
number 3548-1358-00
NOTES:


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to
the installation of a new module/component.


Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan
tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give extra information read by
the manufacturer-approved diagnostic system).


When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places and
with a current calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.

Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.


If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the
cause. Always check for loose connections and corroded terminals.

DTC Description Possible Cause Action B1A5613 Antenna
Bluetooth antenna circuit -
open circuit Refer to the electrical circuit diagrams and check blue tooth
antenna circuit for open circuit B1D7984 Microphone Input
Signal amplitude <
minimum Refer to the electrical circuit diagrams and test microphone
input circuit for short/open circuit. Check integrated audio
module for related DTCs and refer to relevant DTC Index U1A0088
Private
Communication
Network
Bluetooth phone module
internal communications
failure Suspect the module. Check and install a new telephone
module as required, refer to the new module/component
installation note at the top of the DTC Index U210000
Initial
Configuration Not
Complete
Initial configuration not
complete Re-configure the RJB using the manufacturer approved
diagnostic system. If DTC remains, carry out CAN network
integrity tests using the manufacturer approved diagnostic system U210100
Control Module
Configuration
Incompatible
Configuration incompatible Re-configure the RJB using the manufacturer approved
diagnostic system. If DTC remains, suspect the telephone
module. Check and install a new telephone module as
required, refer to the new module/component installation note
at the top of the DTC Index U300044 Control Module
Data memory failure Re-configure the telephone module. If the DTC remains,
suspect the telephone module. Check and install a new
telephone module as required, refer to the new
module/component installation note at the top of the DTC
Index U300045 Control Module
Program memory failure Re-configure the telephone module. If the DTC remains,
suspect the telephone module. Check and install a new
telephone module as required, refer to the new
module/component installation note at the top of the DTC
Index U300055 Control Module
Incorrect car configuration
data received Re-configure the RJB using the manufacturer approved
diagnostic system. Clear DTC and re-test. If the DTC remains
suspect the telephone module. Check and install a new
module as required, refer to the new module/component
installation note at the top of the DTC Index U300098 Control Module
Component or system over
temperature Check for additional DTCs and refer to DTC Index. Clear DTC
and re-test/monitor condition for re-occurrence U300362 Battery Voltage
Mis-match in battery
voltage, of 2 volts or more,
between telephone module
and RJB Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system
Pinpoint Tests

PINPOINT TEST A : UNABLE TO PAIR TEST
CONDITIONS DETAILS/RESULTS/ACTIONS A1: 'NO PHONE FITTED' DISPLAY
NOTE: Prior to continuing with any diagnosis, ensure that the Customer telephone and level of software is included on
the JLR approved list, the telephone battery is fully charged and in a serviceable condition, the bluetooth function is activated
and the telephone handset is placed within the vehicle cabin area. 1 Carry out checks to determine if 'No Phone Fitted' is shown on vehicle display. Is 'No Phone Fitted' displayed? Yes
GO to A2. No
Locate the connected telephone and if not Customer telephone, disconnect from the system. A2: TELEPHONE BLUETOOTH DEVICE SEARCH 1 Carry out Bluetooth device search using Customer handset. www.JagDocs.com

Is 'Jaguar' identified in Bluetooth device list? Yes
Select device from list, then continue with diagnosis.GO to A3. No
Carry out further Bluetooth device search, to a maximum of 4 times, waiting approximately 20 seconds
between searches. If 'Jaguar' still not identified in Bluetooth device list, set ignition status to OFF, wait
approximately 30 seconds and set ignition status to ON. Carry out further Bluetooth device search, to a
maximum of 4 times, waiting approximately 20 seconds between searches. If 'Jaguar' still not identified in
Bluetooth device list, contact your local in market support for further assistance. A3: TELEPHONE HANDSET ERROR 1 Check for any error shown on the telephone handset when 'Jaguar' is selected from the Bluetooth device list. Was an error immediately shown on the telephone handset? Yes
Wait approximately 10 seconds then re-attempt selection, to a maximum of 4 times, waiting
approximately 10 seconds between each attempt. If error still being displayed, contact your local in
market support for assistance.
No
Enter PIN '1313' then continue with diagnosis.GO to A4. A4: PIN ENTRY STATUS 1 Check for successful PIN entry. Was PIN entry successful? Yes
GO to A5. No
Wait approximately 10 seconds then re-attempt PIN entry, to a maximum of 4 times, waiting
approximately 10 seconds between each attempt. If PIN entry is still un-successful, contact your local in
market support for assistance. A5: 'NO PHONE FITTED' DISPLAY 1 Carry out checks to determine if 'No Phone Fitted' is still shown on vehicle display. Is 'No Phone Fitted' still displayed? Yes
From the telephone handset, select the connect option for the 'Land Rover' device identified in the
Bluetooth device list. If 'No Phone Fitted' is still displayed, suspect a telephone handset fault. Carry out
Pinpoint test again using known good telephone handset.
No
The telephone is paired and connected to the system. No further action is required for this symptom.
PINPOINT TEST B : NOT AUTOMATICALLY CONNECTING TEST
CONDITIONS DETAILS/RESULTS/ACTIONS B1: BLUETOOTH MODULE PAIRED DEVICE LIST
NOTE: Prior to continuing with any diagnosis, ensure that the Customer telephone and level of software is included on
the JLR approved list, the telephone battery is fully charged and in a serviceable condition, the bluetooth and auto connect
functions are activated and the telephone handset is placed within the vehicle cabin area. 1 Carry out checks to determine if the Customer telephone is shown in the Bluetooth Module paired device list. Is the Customer telephone in the Bluetooth Module paired device list?
Yes
GO to B2. No
Carry out Unable to Pair Pinpoint Test.GO to A. B2: CUSTOMER HANDSET PAIRED DEVICE LIST 1 Carry out checks to determine if the Bluetooth Module is shown in the Customer telephone paired device list. Is the Bluetooth Module in the Customer telephone paired device list?
Yes
GO to B3. No
Carry out Unable to Pair Pinpoint Test.GO to A. B3: CUSTOMER TELEPHONE IN POSITION 1 1 Carry out checks to determine if the Customer telephone is in position 1 in the Bluetooth Module paired device list. Is the Customer telephone in position 1?
Yes
GO to B4. No
Advise Customer that auto connection will only be attempted with the device that is shown in position 1
in Bluetooth Module paired device list. B4: CHECK FOR DTC B1A56-13 1 Using Manufacturer approved diagnostic system, check for DTC B1A56-13.

Is DTC B1A56-13 logged?
Yes
Carry out remedial actions as outlined in DTC Index. If symptom remains, contact your local in market
support for assistance.
No
GO to B5. B5: BLUETOOTH CONNECTION 1 Carry out checks to determine if Bluetooth connection icon is shown on Customer Bluetooth telephone screen but shows 'No Phone Fitted' on vehicle screen. Is Bluetooth connection icon shown on the Customer handset but 'No Phone Fitted' displayed on vehicle
screen?
Yes
GO to B9. No
GO to B6. B6: 'LAND ROVER' AUTHORISATION
NOTE: Some handsets may require operator intervention to manually authorise connection. 1 Carry out checks to determine if 'Land Rover' is authorised in the Customer Bluetooth telephone device list menu. Is 'Land Rover' authorised in the Customer Bluetooth telephone device list menu?
Yes
GO to B7. No
Advise customer that 'Land Rover' needs to be authorised in the Customer Bluetooth telephone device
list menu, or operator intervention may be required to manually authorise connection. B7: SEARCH FOR DEVICES SCREEN 1 Select the search for devices button on the vehicle display. Does pressing the search for devices button bring up the searching screen on the vehicle display?
Yes
Contact your local in market support for assistance.
No
GO to B8. B8: CYCLE IGNITION AND CHECK SEARCH FOR DEVICES SCREEN 1 Lock vehicle (wait 60s) before unlocking and turning Ignition status back to ON. Does pressing the search for devices button bring up the searching screen on the vehicle display?
Yes
No further action required for this Symptom. Possible intermitent fault.
No
Contact your local in market support for assistance. B9: PAIRED DEVICE 1 Check Customer telephone paired device list to establish which device the Customer telephone is connected to. Is the Customer telephone connected to the vehicle?
Yes
Lock vehicle (wait 60s) before unlocking and turning Ignition status back to ON. If Not Automatically
Connecting, contact you local in market support for assistance.
No
Using the Customer telephone controls, disconnect from the currently connected device and delete from
paired device list. Lock vehicle (wait for 60s) before unlocking and turning Igition status to ON. If Not Automatically Connecting, contact your local in market support for assistance.
PINPOINT TEST C : NO AUDIO TO THIRD PARTY TEST CONDITIONS DETAILS/RESULTS/ACTIONS C1: MICROPHONE DIAGNOSTIC TROUBLE CODES (DTCS)
NOTE: Prior to continuing with any diagnosis, ensure that the Customer telephone and level of software is included on
the JLR approved list, the telephone battery is fully charged and in a serviceable condition, the telephone is placed within the
vehicle cabin area and is connected to the vehicle via bluetooth. 1 Using the Manufacturer approved diagnostic system, check for any logged microphone DTCs in Audio Front Control module. Is DTC B1D79-01 logged? Yes
Carry out diagnosis of electrical failure as advised in Action column of DTC Index.
No
Contact your local in market support for assistance.
PINPOINT TEST D : NO AUDIO FROM THIRD PARTY TEST CONDITIONS DETAILS/RESULTS/ACTIONS D1: 'IN CALL' DISPLAY

NOTE: Prior to continuing with any diagnosis, ensure that the Customer telephone and level of software is included on
the JLR approved list, the telephone battery is fully charged and in a serviceable condition, the telephone is placed within the
vehicle cabin area and is connected to the vehicle via bluetooth. 1 Carry out checks to determine if 'In Call' is shown on the vehicle display. Is vehicle display showing 'In Call'?
Yes
Contact your local in market support for assistance.
No
Call has ended. No further action is required for this symptom.
PINPOINT TEST E : NO AUDIO TEST CONDITIONS DETAILS/RESULTS/ACTIONS E1: AUDIO FROM THIRD PARTY
NOTE: Prior to continuing with any diagnosis, ensure that the Customer telephone and level of software is included on
the JLR approved list, the telephone battery is fully charged and in a serviceable condition, the telephone is placed within the
vehicle cabin area and is connected to the vehicle via bluetooth. 1 Establish from Customer feedback/symptom if there is Audio from the Third Party. Is there Audio from the Third Party? Yes
GO to E2. No
Refer to the 'No Audio From Third Party' Pinpoint test.GO to D. E2: AUDIO TO THIRD PARTY 1 Establish from Customer feedback/symptom if there is Audio to the Third Party. Is there Audio to the Third Party? Yes
GO to E3. No
Refer to the 'No Audio To Third Party' Pinpoint test.GO to C. E3: CD OR RADIO AUDIO 1 Establish from Customer feedback/symptom if there is Audio from the CD or Radio. Is there Audio from the CD or Radio? Yes
GO to E4. No
Suspect MOST ring fault, refer to electrical circuit diagrams and check/rectify MOST ring as necessary. E4: TELEPHONE HANDSET AUDIO 1 Establish from Customer feedback/symptom if there is Audio from the telephone handset. Is there Audio from the telephone handset? Yes
Ensure vehicle is parked. Disconnect and reconnect handset. If issue not resolved, contact your
local in market support for assistance.
No
Contact you local in market support for assistance.

Published: 11-May-2011
Information and Entertainment System - General Information - Navigation
System
Diagnosis and Testing

Principle of Operation

For a detailed description of the Navigation System, refer to the relevant Description and Operation sections in the workshop
manual. REFER to: (415-01 Information and Entertainment System)

Navigation System (Description and Operation),
Navigation System (Description and Operation),
Navigation System (Description and Operation),
Video System (Description and Operation),
Video System (Description and Operation),
Video System (Description and Operation).

Inspection and Verification


CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not
guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.
1. Verify the customer concern.

2. Visually inspect for obvious signs of damage and system integrity.

Visual Inspection
Mechanical Electrical
Information and entertainment module
Audio amplifier module
Integrated audio module
Portable audio interface module
Digital audio broadcast module
Integrated control panel
Touch screen display
Satellite radio module
Television module
Navigation system module
Telephone module
Compact disc player jammed, not loading
Scratched/dirty compact discs
Speakers
Fuses
Loose or corroded connector(s)
Information and entertainment module
Audio amplifier module
Integrated audio module
Portable audio interface module
Digital audio broadcast module
Integrated control panel
Touch screen display
Satellite radio module
Television module
Navigation system module
Telephone module
Speakers
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. If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the relevant DTC Index.

DTC Index

Navigation System Module


CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part
number 3548-1358-00
NOTES:


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to
the installation of a new module/component.


Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan
tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give extra information read by
the manufacturer-approved diagnostic system).


When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places and
with a current calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.

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)

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.