display JAGUAR XFR 2010 1.G User Guide
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Page 297 of 3039
Rear Suspended Tow
When the vehicle is being recovered by rear suspended tow:
The ignition key must be removed from the ignition switch to lock the steering.
The rear wheels must be correctly positioned in the lifting cradle and securely tied down.
Emergency Towing
WARNING: If the engine is not running, the steering will become heavy and the force necessary to effectively apply the
brakes will be greatly increased.
CAUTION: A vehicle with a defective transmission must be towed by rear suspended tow.
When the vehicle is being towed on its own wheels:
Local regulations for the towing of vehicles must be followed. In some countries the registration number of the towing
vehicle and an 'On Tow' sign or warning triangle must be displayed at the rear of the towed vehicle.
The gear selector lever must be in Neutral.
The ignition switch must be in position II to release the steering lock and make the direction indicators, horn and stop
lamps operate.
A distance of 0,8 km (0.5 mile) must not be exceeded.
A speed of 48 km/h (30 mph) must not be exceeded.
The tow rope must be attached to the front towing eye. www.JagDocs.com
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Published: 11-May-2011
Noise, Vibration and Harshness - Noise, Vibration and Harshness (NVH)
Description and Operation
Noise, vibration and harshness (NVH) is becoming more important as vehicles become more sophisticated and passenger
comfort levels increase. This section is designed to aid in the diagnosis, testing and repair of NVH concerns.
Noise is defined as sounds not associated with the operation of passenger compartment equipment that interface with
customer satisfaction.
Vibration is defined as impulses felt by the customer that are not caused by road surface changes.
Harshness is a ride quality issue where the customer feels that the vehicle response to the road surface is sharply
transmitted to the customer.
Diagnostic Theory
Diagnosis is more than just following a series of interrelated steps in order to find the solution to the specific condition. It is a
way of looking at systems that are not functioning the way they should and finding out why. Also it is knowing how the system
should work and whether it is working correctly.
There are basic rules for diagnosis. If these rules are followed, the cause of the condition is usually found the first time
through the system.
Know the System
Know how the parts go together.
Know how the system operates as well as its limits and what happens when the system goes wrong.
Sometimes this means checking the system against one that is known to be working correctly.
Know the History of the System
A clue in any one of these areas may save time:
How old or new is the system?
What kind of treatment has it had?
Has it been repaired in the past in such a manner that might relate to the present condition?
What is the repair history?
Know the History of the Condition
Did it start suddenly or appear gradually?
Was it related to some other occurrence such as a collision or previous part renewal?
Know how the condition made itself known; it may be an important clue to the cause.
Know the Probability of Certain Conditions Developing
Look for the simple rather than the complex.
For example:
- Electrical conditions usually occur at connections rather than components.
- An engine no-start is more likely to be caused by a loose wire or small adjustment rather than a sheared-off
camshaft.
Know the difference between impossible and improbable. Certain failures in a system can be improbable but still
happen.
New parts are just that, new. It does not mean they are always good functioning parts.
Do Not Cure the Symptom and Leave the Cause
Lowering the pressure in a front tire may correct the condition of a vehicle leaning to one side, but it does not correct the
original condition.
Be Positive the Cause is Found
Double check the findings.
What caused a worn component?
A loose transmission or engine mount could indicate that other mounts are also loose.
Diagnostic Charts
Charts are a simple way of expressing the relationship between basic logic and a physical system of components. They help
discover the cause of a condition in the least time. Diagnostic charts combine many areas of diagnosis into one visual display:
probability of certain things occurring in a system
speed of checking certain components or functions before others
simplicity of carrying out certain tests before others
elimination of checking huge portions of a system by carrying out simple tests
certainty of narrowing down the search to a small portion before carrying out in-depth testing
The fastest way to find a condition is to work with the tools that are available. This means working with proven diagnostic
charts and the correct special equipment for the system.
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1 Tire valve and pressure sensor 2 Tire fitting/removal tool initial start position 3 High tire and bead tension area 4 Low tire and bead tension area When removing the tire, the bead breaker must not be used within 90 degrees of the tire valve in each direction on each side
of the tire.
When using the tire removal machine, the fitting arm start position must be positioned as shown in the tire changing
illustration for each side of the tire. The wheel can then be rotated through 180 degrees in a counter-clockwise direction. This
will relieve tension from the tire bead allowing the remaining 180 degrees of the tire to be manually pulled from the rim.
When refitting the tire, position the fitting arm as shown. Rotate the tire and take care that the bead on the low tension side
of the tire does not damage the sensor.
Run-Flat Tires
Run-flat tires are not available on vehicles from 2011MY.
TREAD Act - NAS Only
Vehicles supplied to the North American markets must comply with the legislation of the Transport Recall Enhancement,
Accountability and Documentation (TREAD) act. Part of the requirement of the TREAD act is for the vehicle to display a label
which defines the recommended tire inflation pressure, load limits and maximum load of passengers and luggage weight the
vehicle can safely carry. This label will be specific to each individual vehicle and will be installed on the production line. The
label is positioned on the driver's side 'B' pillar on NAS vehicles and the inside rear face of the LH door on Canadian
specification vehicles.
This label must not be removed from the vehicle. The label information will only define the specification of the vehicle as it
came off the production line. It will not include dealer or owner fitted accessory wheels and tires of differing size from the
original fitment.
If the label is damaged or removed for body repair, it must be replaced with a new label specific to that vehicle. A new label is
requested from Jaguar parts and will be printed specifically for the supplied VIN of the vehicle.
Tire Pressure Monitoring System (TPMS)
The Tire Pressure Monitoring System (TPMS) is a driver assistance system which assists the driver to maintain the tire
pressures at the optimum level. TPMS is standard fitment on NAS vehicles and an optional fitment in other markets. TPMS
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The warning indications to the driver are common on all vehicles fitted with TPMS. The driver is alerted to system warnings by
a low tire pressure warning indicator in the instrument cluster and an applicable text message in the message centre.
The TPMS module passes system status information to the instrument cluster on the medium speed CAN bus. The instrument
cluster converts this data into illumination of the warning indicator and the display of an appropriate message.
When the ignition is switched on, the warning indicator is illuminated for 3 seconds for a bulb check.
NOTE: If the vehicle is not fitted with the TPMS, the warning indicator will not illuminate.
The instrument cluster checks, within the 3 second bulb check period, for a CAN bus message from the TPMS. During this time
the TPMS performs internal tests and CAN bus initialization. The warning indicator will be extinguished if the TPMS module
does not issue a fault message or tire pressure warning message.
If a TPMS fault warning message is detected by the instrument cluster at ignition on, the warning indicator will flash for 72
seconds after the 3 second bulb check period and then remain permanently illuminated.
If a tire pressure warning message is detected by the instrument cluster at ignition on, the warning indicator will extinguish
briefly after the 3 second bulb check period, before re-illuminating to indicate a tire pressure warning.
The following table shows the warning indicator functionality for given events:
Event Instrument Cluster Indications Low pressure warning limit reached in one wheel
Warning indicator illuminated. 'CHECK TYRE PRESSURE' message displayed
and applicable tire highlighted on display. Low pressure warning limit reached in one or
more wheels in low speed mode (only if programmed or learning) Warning indicator illuminated. 'CHECK ALL TYRE PRESSURES' message
displayed. TPMS fault
Warning indicator flashes for 72 seconds and is then permanently
illuminated. The flash sequence repeats after ignition on cycle. 'TYRE
PRESSURE SYSTEM FAULT' message displayed. No transmission from a specific tire pressure
sensor or Specific tire pressure sensor fault Warning indicator flashes for 72 seconds and is then permanently
illuminated. The flash sequence repeats after ignition on cycle. 'TYRE NOT
MONITORED' message displayed. No transmission from more than one tire pressure
sensor or more than one tire pressure sensor
fault Warning indicator flashes for 72 seconds and is then permanently
illuminated. The flash sequence repeats after ignition on cycle. 'TYRE
PRESSURE SYSTEM FAULT' message displayed. CAN (controller area network) signals missing
Warning indicator flashes for 72 seconds and is then permanently
illuminated. The flash sequence repeats after ignition on cycle. 'TYRE
PRESSURE SYSTEM FAULT' message displayed. Vehicle enters high speed mode (only available in
certain markets) Warning indicator illuminated. 'TYRE PRESSURE LOW FOR SPEED' message displayed.
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System Fault Message
The adaptive damping module has a high speed CAN connection to the instrument cluster. If a fault is detected by the adaptive damping module, a message is sent to the instrument cluster and the message 'ADAPTIVE DYNAMICS FAULT' is
displayed. The adaptive damping module also logs an appropriate DTC. The adaptive damping module can be interrogated using an approved Jaguar diagnostic system.
When a fault is detected, the adaptive damping module implements a strategy based on the type of fault. If there is an
electrical power fault, or the adaptive damping module cannot control the dampers, they default to the firm condition. If a
sensor fails that only affects one or more control modes then an intermediate damper setting is used as the lower threshold
and the remaining working modes can demand higher damping as required.
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Published: 11-May-2011
Ride and Handling Optimization - Ride and Handling Optimization - System
Operation and Component Description
Description and Operation
JAGUARDRIVE CONTROL OPERATION
Engine Management System System Operation
The Engine Management System (EMS) varies the accelerator pedal maps to change the amount of torque per percentage of
pedal travel. The EMS can also change the accelerator pedal response to control the allowed torque change relative to the
speed of pedal travel.
Each driving mode uses a combination of operating parameters for each sub-system. Changing between driving modes initiates
a different set of operating characteristics, which will be noticeable to the driver. The driver will notice differences in engine
response when, for example, the accelerator pedal is held in a constant position and the driving mode is changed from Winter
to Dynamic, the driver will notice the torque and engine speed increase. Similarly, if the mode is changed from Normal or
Dynamic to Winter the driver will notice a reduction in torque and engine speed.
NOTE: The change in torque and engine speed can take approximately 30 seconds and care must be taken not to confuse
the JaguarDrive Control system operation with an EMS fault.
Transmission Control
The TCM (transmission control module) changes the shift maps for the JaguarDrive Control mode selected. This changes the
shift points providing early or late upshifts and downshifts. For example, on slippery surfaces in Winter mode the transmission
will select 2nd gear for starting from a standstill on a flat surface to minimize wheel slip.
Anti-lock Braking System Control
The ABS (anti-lock brake system) module controls several vehicle functions and adjusts the operating parameters of these
functions to optimize the selected JaguarDrive Control mode. Traction control uses different slip/acceleration thresholds to
improve traction and vehicle composure. For example, the system sensitivity is increased on slippery surfaces to reduce wheel
spin.
If TracDSC is selected or DSC is switched off, then subsequently the JaguarDrive Control mode is changed, DSC is automatically
switched back on (or to TracDSC for Dynamic mode).
The stability control uses different threshold values for the selected mode, reducing the requirement for the driver to change
the DSC system mode for optimum performance in various driving scenarios.
Incorrect Mode Usage
Selection of an inappropriate mode is discouraged in the following ways:
The active mode icon is continually displayed in the instrument cluster message center
In any special mode, when the ignition has been in the off position continuously for more than 6 hours, the JaguarDrive
Control system defaults to the special modes off (DSC on).
Selection of an inappropriate mode for the conditions will not endanger the driver or immediately cause damage to the vehicle.
Continued use of an inappropriate mode may reduce the life of some components. The driver may notice a different vehicle
response, with the engine and transmission responses being different than in the special modes off.
Driver Information
The instrument cluster contains a message center, which displays vehicle information to the driver. The message center
contains the JaguarDrive Control mode icons, which display the currently selected mode. If no symbol is displayed, no special
mode is selected and the system is in special modes off.
Any required changes to the subsystems are also passed to the driver in the form of warning illumination in the instrument
cluster or appropriate messages in the message center, DSC off for example.
In Dynamic mode when the transmission is in manual mode, the gear information is displayed in amber when the appropriate
engine speed is reached for optimum sporty change point.
DIAGNOSTICS
JaguarDrive Control relies on the correct functionality of the sub-systems. If one of the sub-systems develops a fault, the
JaguarDrive Control system will not function, even though the fault is not in the JaguarDrive Control system.
The JaguarDrive Selector module and rotary control should only be investigated if there are no apparent faults in any of the
sub-systems. If a fault in a sub-system is subsequently corrected, the JaguarDrive Control system will function normally after
an ignition on and off cycle.
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JaguarDrive Control Sub-System Faults
If a fault occurs in a sub-system, the driver is alerted by the illumination of a warning indicator and/or an appropriate message
for that sub-system in the instrument cluster message center. No JaguarDrive Control message will be shown when a failed
sub-system displays its own message.
When a sub-system fault is present and the driver attempts to select a different JaguarDrive Control mode or at the next
ignition on cycle, a message 'WINTER MODE FAULT' or 'DYNAMIC MODE FAULT' will appear in the message center. This
generally implies that the JaguarDrive Control system has a fault, but only because a sub-system fault is preventing its
operation. This message will be displayed once per ignition cycle, but is repeated if a further selection is made by the driver
using the JaguarDrive Control buttons or at the next ignition on cycle.
NOTE: The message 'WINTER MODE FAULT' or 'DYNAMIC MODE FAULT' can also in very rare circumstances be generated
by a fault in the JaguarDrive Control module.
It is not possible for the JaguarDrive Control module to cause any fault behavior (warning indicator illumination or message
generation) in any of the sub-systems. Illumination of a sub-system warning indicator and/or a sub-system related message
will never be associated with a JaguarDrive Control module or JaguarDrive Control system fault.
The sub-system control modules can detect a fault with the CAN (controller area network) bus signal from the transmission
selector module. If a fault in the JaguarDrive Control system is detected, the sub-system control modules will operate in the
'special modes off' setting. The sub-system control modules will record a fault code for a failure of the JaguarDrive Control CAN signal. These faults can be retrieved using the Jaguar approved diagnostic tool and will provide useful information to indicate
investigation of the JaguarDrive Selector module or the CAN bus network. JaguarDrive Control System or Control Module Fault
If a fault occurs in the JaguarDrive Control system, all button icon LED (light emitting diode)'s will be turned off (background
illumination will remain on) and pressing of the JaguarDrive Control buttons is ignored. The instrument cluster message center
will display a message 'WINTER MODE FAULT' or 'DYNAMIC MODE FAULT' when the fault occurs, if the fault is present and the
driver attempts to select a special mode (if the control module is able to do this) or at the next ignition on cycle.
The JaguarDrive Control buttons and control module (JaguarDrive Selector module) are an integral unit. If a fault occurs in
either component, the whole unit will require replacement, however, this is extremely unlikely.
CAN Bus Faults
If a CAN bus fault exists and prevents JaguarDrive Control system operation, all of the JaguarDrive Control button icon LED's will be illuminated and rotation pressing of the JaguarDrive Control buttons is ignored.
If the instrument cluster does not receive a JaguarDrive Control system CAN bus message from the JaguarDrive Control module, the message 'SPECIAL MODE UNAVAILABLE' will be displayed when the fault occurs and will be repeated at every
ignition on cycle.
User Error
A special mode change while DSC or ABS is active (this includes ABS cycling) may be misinterpreted as a system fault.
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JAGUARDRIVE CONTROL DESCRIPTION Component Description
Item Description 1 Winter mode button 2 DSC/TracDSC mode button 3 ASL (automatic speed limiter) - Reference only, not part of JaguarDrive system 4 Dynamic mode (Supercharged models only) The system is controlled by buttons adjacent to the JaguarDrive Selector located on the floor console. The buttons allow the
selection of one of the following 3 modes:
Special modes off
Winter mode
Dynamic mode (Supercharged models only).
The instrument cluster will display the selected JaguarDrive Control mode in the message center.
The JaguarDrive Control system uses a combination of a number of vehicle sub-systems to achieve the required vehicle
characteristics for the mode selected. The following sub-systems make up the JaguarDrive Control system:
The Engine Management System (EMS)
Automatic transmission
Brake system.
The JaguarDrive Control software is stored in the JaguarDrive Selector module located below the JaguarDrive selector. The
module detects the selection made using the buttons and transmits a signal on the high speed CAN bus, which is received by each of the sub-system control modules.
Each of the affected sub-system control modules contain software, which applies the correct operating parameters to their
controlled system for the JaguarDrive Control mode selection made.
Each sub-system control module also provides a feedback for the selected mode so that the JaguarDrive Control software can
check that all systems have changed to the correct operating parameters.
NOTE: The JaguarDrive Control system is a co-ordinating system only. It CANNOT generate a fault in one of the
participating sub-systems. All participating sub-systems should be FULLY diagnosed before assuming a fault with JaguarDrive
Control. Replacing the JaguarDrive Selector module should not be done until all other options have been exhausted. JAGUARDRIVE CONTROLS
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Winter Mode
To activate winter mode, press the winter mode button briefly (not less than 300 ms) to activate or de-activate the mode.
NOTE: Winter mode cannot be active at the same time as dynamic mode (Supercharged models only).
When active the winter mode icon and message appear in the instrument cluster message center to confirm the activation.
Dynamic Stability Control (DSC)
Press the DSC mode button briefly (not less than 300 ms) to switch between DSC and TracDSC. The instrument cluster
message center will display either 'DSC ON' or 'TRAC DSC' depending on which selection is made. When TracDSC is selected,
the DSC warning lamp in the instrument cluster is illuminated and the DSC button is illuminated.
DSC can be manually switched off by pressing the DSC mode button for more than 10 seconds. Confirmation is given by a
chime from the instrument cluster, 'DSC OFF' is displayed in the instrument cluster message center and the DSC warning lamp
in the instrument cluster is illuminated.
NOTE: DSC is operational at all times when the engine is running unless manually switched off.
Dynamic Mode (Supercharged models only)
To activate Dynamic mode, press the button briefly. The dynamic mode and DSC buttons are illuminated. 'Dynamic Mode
Confirmed' message is displayed in the instrument cluster message center and the DSC off warning lamp in the instrument
cluster is illuminated (due to automatic selection of TracDSC in Dynamic mode).
NOTE: Dynamic mode cannot be active at the same time as winter mode.
Once activated, TracDSC is automatically selected. In gearbox Sport mode, the driver has full control over the transmission
shift points and the TCM will not intervene to prevent engine overspeed (for example; upshifts are inhibited in gearbox sport mode when Dynamic mode is selected). In this setting, the gear indicator in the instrument cluster will turn amber at high
rev's to indicate an appropriate manual upshift point.
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bus allows the DLM to communicate with other systems on the vehicle.
A certain amount of differential slip is required to allow the vehicle to turn corners and to remain stable under control of the
ABS. The ADM monitors the driver's demands through primary vehicle controls and automatically sets the slip torque in the differential. The system is completely automatic and does not require any special driver input.
The differential strategy in the ADM includes:
A pre-loading function, increasing locking torque with increased driving torque.
A slip controller to decrease locking torque for optimum comfort, e.g. parking.
The ADM memorizes the position of the motor when the ignition is switched off.
CAN bus messages used by the ADM include wheel speed, steering angle, automatic transmission speed, temperature information, car configuration, axle ratios and mode inputs.
The ADM also sends messages via the CAN bus to tell other control modules on the network the status of the electronic differential. The clutch torque and default mode status are some of the main signals sent out by the ADM.
If the DLM or ADM are replaced, a Jaguar approved diagnostic system must be connected to the vehicle and the differential
self-calibration procedure must be performed. This procedure must also be performed if the motor or electronic differential is
replaced.
If a fault occurs with the electronic differential, the ADM, the DLM, or one of the required input signals, the ADM records an
error code and displays a warning in the message center.
The following messages can be displayed:
Message Description Chime E-DIFF NOT
AVAILABLE Differential temperature has reached the overheat threshold. System deactivated until temperature
returns within limits. Single E-DIFF FAULT Fault has occurred with electronic differential. System deactivated until fault rectified. Single