2009 JAGUAR XF Control module

53
Supplementary restraints system

PRINCIPLE OF OPERATION
Introduction
In the event of a collision, the airbag control
unit monitors the rate of deceleration caused
by the collision. This information is then used
to determine whether airbags should be
deployed.
Airbag deployment is de pendent on the rate at
which the passenger compartment changes
velocity following the collision. The
circumstances affecting different collisions
(vehicle speed, angle of impact, type and size
of object hit, etc.), vary considerably and will
affect the rate of de celeration accordingly.
The Supplementary Restraint System (SRS)
components include:-
• SRS warning indicator.
• Rotary coupler.
• Airbag modules.
• Seat belt pre-te nsioners (front seat belts).
• Restraints control module.
• Crash sensors.
• Airbag wiring harnesses. The SRS is not designed to
operate as a result
of:
• Rear impacts.
• Minor front impacts.
• Minor side impacts.
• Heavy braking.
• Driving over bumps and pot holes.
Therefore, it follows that considerable
superficial damage to the vehicle can occur,
without causing the airbags to deploy.

55
Supplementary restraints system

Note: The general location of airbags fitted to
the vehicle are marked by the word AIRBAG.
Always contact your Dealer/Authorised
repairer if:-
• An airbag inflates.
• The front or sides of the vehicle are
damaged.
• Any part of the SRS shows signs of
cracking or damage, including trim
covering airbags.
Airbag operation
Airbags cannot deploy co rrectly if they are
obstructed. Examples of obstructions are:-
• Any part of an occu pants body in contact
with, or close to, an airbag covering.
• Objects placed on, or close to, an airbag
cover.
• Clothing, sun screens, or other material
hanging from grab handles.
• Clothing, cushions, or other material,
covering seat mounted airbags.
• Seat covers which are not approved by
Jaguar, or specifical ly designed for use
with seat mounted airbags.
• Luggage that intrudes into the area that
will be occupied by a deploying airbag
system.
This list is not exhausti ve and it remains the
responsibility of the driv er and passengers to
ensure that the airbags are not obstructed in
any way.
Deployment and deflation
In the event of a collisi on, the restraints control
system monitors the rate and direction of
deceleration. If required to supplement the seat
belts, airbags will be deployed as appropriate.
After operation, frontal airbags do not retain
pressure.
Front airbags
The front passenger’s and driver’s airbags are
able to deploy in two stages, depending on the
severity of the frontal impact. In a severe
impact, the airbags inflate fully to offer
maximum protection. In a lower severity
impact, less inflation ma y be required, so the
airbags inflate in a different manner.
WARNINGS
Phone systems should only be
installed by qualified persons familiar
with the operation of, and
requirements for, vehicles fitted with SRS. If
you are in any doubt, seek advice from your
Jaguar Dealer/Authorised repairer.
WARNINGS
For the airbags to operate correctly
the roof lining and door post trims
must be in good condition, correctly
fitted, and free from obstruction. Any damage,
wear, or incorrect fitmen t should be referred to
your Dealer/Authorised repairer as soon as
possible for examination and repair.
Do not allow passe ngers to obstruct
the operation of the airbags by
placing any part of their person, or
any objects, in contact with, or close to, an
airbag module. Airbags deploy at very high
speeds and can cause se rious injury or death
if objects or occupants are within the area of
deployment.

245
Fuses

FUSE SPECIFICATION CHART
Engine compartment fuse box
Fuse No Rating (amps) Fuse
Colour Circuit
F1 - - Not used.
F2 - - Not used.
F3 20A Blue Emissions system (petrol only).
F4 20A Blue Emissions system (petrol only).
F5 40A Green Anti-lock brake pump.
F6 30A Pink Power wash pump.
F7 - - Not used.
F8 - - Not used.
F9 50A Red Engine management.
F10 - - Not used.
F11 - - Not used.
F12 50A Red Secondary air in jection (petrol only).
F13 30A Pink Wipers.
F14 30A Pink Starter solenoid.
F15 40A Green Screen heater.
F16 40A Green Screen heater.
F17 80A Black Radiator fan. (V6 petrol only)
F18 60A Yellow Glow plugs (diesel only).
F19 - - Not used.
F20 15A Blue Horn.
F21 25A Clear Anti-lock brakes.
F22 15A Blue Cigar lighter.
F23 - - Not used.
F24 5A Tan Adaptive cruise control.
F25 10A Red Anti-lock brakes.
F26 10A Red Engine manage ment. JaguarDrive selector. Transmission
control module.
F27 5A Tan Diesel - Engine management.
F27 5A Tan Petrol - Secondary air injection.

Status after a collision
252

When driving
When driving a vehicle which has been
involved in a collision use caution and pay extra
attention to the operation of the vehicle. If any
changes in vehicle operation after the collision
are noted when compared to it's operation
before the collision, do not continue to drive
the vehicle. Stop the vehi cle as soon as it is
safe to do so, and have the vehicle recovered.
Pay particular attent ion to changes in:-
• Steering.
• Braking.
• Unusual noises.
• Warning lights or messages displayed.
• Problems with electrical systems.
INSPECTING SAFETY SYSTEM
COMPONENTS
Following a collision the seat belt and
Supplementary Restrain t System components
should be inspected for damage and/or
deformity. The inspection and any subsequent
repair work should only be carried out by a
Dealer/Authorised Repair er, or other suitably
qualified personnel.
Components which require inspection
include:-
• Seat belt webbing and mechanisms.
• Seat belt pre-tensioners.
• Airbag covers and modules.
• Seat frames a nd mounting points.
• Child seats.
• Child seat anchor points.
• Pedestrian prot ection system.
Note: This list is not exhaustive.
In addition to the physical items checked, the
electronic control system and its associated
wiring should also be checked thoroughly. This
process will include a diagnostic check which
can only be carried out by a Dealer/Authorised
repairer or suitably qualified and equipped
persons.
WARNING
It is not recommended that the
vehicle be driven or used until all of
the occupant protection systems
have been checked.

Index
382
Bulb changing . . . . . . . . . . . . . . . . . . . . . . 83direction indicator bulb (front) . . . . . . . 84
headlamp unit bulbs . . . . . . . . . . . . . . . 83
high level brake lamp . . . . . . . . . . . . . . 86
number plate lamp bulb . . . . . . . . . . . . 86
rear lamp bulbs . . . . . . . . . . . . . . . . . . . 85
side lamp bulb . . . . . . . . . . . . . . . . . . . 85
side repeater lamp . . . . . . . . . . . . . . . . 85
Bulb specification chart . . . . . . . . . . . . . . . 87
C
Cancel guidance . . . . . . . . . . . . . . . . . . . 350
Car wash . . . . . . . . . . . . . . . . . . . . . . . . . 187
Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Changing a bulb . . . . . . . . . . . . . . . . . . . . 83 general information . . . . . . . . . . . . . . . . 83
Changing a fuse. . . . . . . . . . . . . . . . . . . . 241 checking or renewing a blown fuse . . . 241
Changing a road wheel . . . . . . . . . . . . . . 225
locking wheel nuts . . . . . . . . . . . . . . . 226
spare wheel location . . . . . . . . . . . . . . 226
temporary use spare wheel . . . . . . . . . 225
tightening the wheel nuts . . . . . . . . . . 229
wheel changing procedure . . . . . . . . . 228
wheel changing safety. . . . . . . . . . . . . 227
Changing the remote cont rol battery . . . . . 24
Changing the vehicle battery . . . . . . . . . . 215
battery disposal. . . . . . . . . . . . . . . . . . 215
Changing the wiper blades . . . . . . . . . . . . 91 changing the wiper blades . . . . . . . . . . 92
service position . . . . . . . . . . . . . . . . . . . 91
Channel automatic tuning . . . . . . . . . . . . 284
Channel options. . . . . . . . . . . . . . . . . . . . 284 DAB search . . . . . . . . . . . . . . . . . . . . . 286
finding a channel. . . . . . . . . . . . . . . . . 285
finding a subchannel . . . . . . . . . . . . . . 285
finding an ensemble . . . . . . . . . . . . . . 286
Charging the vehicle battery . . . . . . . . . . 215
Checking the wiper blades . . . . . . . . . . . . . 90
Child safety locks . . . . . . . . . . . . . . . . . . . 65
Child seat anchor points . . . . . . . . . . . . . . 62 installing an ISOFIX child seat. . . . . . . . 63
ISOFIX anchor points . . . . . . . . . . . . . . 62
tether anchorage points . . . . . . . . . . . . 64
Child seat positioning . . . . . . . . . . . . . . . . 60 Child seats . . . . . . . . . . . . . . . . . . . . . . . . . 59
child restraint check list . . . . . . . . . . . . . 60
Cleaning the alloy wheels . . . . . . . . . . . . . 187
Cleaning the exterior . . . . . . . . . . . . . . . . . 187
bird droppings . . . . . . . . . . . . . . . . . . . 189
cleaning the rear screen . . . . . . . . . . . . 189
glass surfaces . . . . . . . . . . . . . . . . . . . 189
polishing . . . . . . . . . . . . . . . . . . . . . . . 189
removing grease and tar. . . . . . . . . . . . 189
underbonnet cleaning . . . . . . . . . . . . . . 188
using an automatic wash . . . . . . . . . . . 188
washing the vehicle paintwork . . . . . . . 187
Cleaning the interior . . . . . . . . . . . . . . . . . 189 airbag module covers . . . . . . . . . . . . . . 191
carpet and mats . . . . . . . . . . . . . . . . . . 191
cloth and fabric . . . . . . . . . . . . . . . . . . 190
instrument pack, clock, and audio equipment . . . . . . . . . . . . . . . . . . . . 190
leather . . . . . . . . . . . . . . . . . . . . . . . . . 190
removing stains . . . . . . . . . . . . . . . . . . 190
seat belts . . . . . . . . . . . . . . . . . . . . . . . 191
Climate seats . . . . . . . . . . . . . . . . . . . . . . . 48 backrest ventilation only. . . . . . . . . . . . . 48
cooled ventilation . . . . . . . . . . . . . . . . . . 48
heated ventilation . . . . . . . . . . . . . . . . . . 48
Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 setting the clock as the screensaver . . . 124
Compact disc display options . . . . . . . . . . 296
Compact disc pause . . . . . . . . . . . . . . . . . 295
Compact disc player CD compatibility . . . . . . . . . . . . . . . . . . 292
loading CDs . . . . . . . . . . . . . . . . . . . . . 292
Compact disc selection . . . . . . . . . . . . . . . 294
Compass view. . . . . . . . . . . . . . . . . . . . . . 360
Condensation - lamps . . . . . . . . . . . . . . . . . 76
Controls overview . . . . . . . . . . . . . . . . . . . . 12
Coolant check . . . . . . . . . . . . . . . . . . . . . . 204
Cornering lamps . . . . . . . . . . . . . . . . . . . . . 79
Cruise control . . . . . . . . . . . . . . . . . . . 74, 156
principle of operation . . . . . . . . . . . . . . 156
Cup holders . . . . . . . . . . . . . . . . . . . . . . . 126 twin cup holder . . . . . . . . . . . . . . . . . . 127