airbag JAGUAR S TYPE 2005 1.G Technical Guide Update

JAGUARS-TYPE
D.418.233
Occupant Protection
36
Restraints Control Module (RCM)
The RCM:
¥ Houses the electro-mechanical safing sensor
and electronic discrimination sensor which
detect a frontal impact.
¥ Houses the electronic safing sensor to detect
a side impact.
¥ Identifies severity and direction of impact
and makes decision on deployment of airbags
and pre-tensioners.
¥ Provides firing signals to all airbags and pre-
tensioners.
¥ Performs on board testing of the airbag and
pretensioner firing circuits, warning indicator
circuits and module status (Side Impact
Sensor performs its own internal checks).
¥ Stores fault codes in non-volatile memory.
¥ Drives the airbag warning lamp on the
instrument pack: if the warning lamp is
faulty (fault code recorded) an audible
warning tone is sounded.
¥ In the event of an impact, sends a signal to
the vehicle emergency message system
(VEMS) and the PCM to indicate that a crash
has occurred.
¥ Is connected to the data link connector via
the SCP data bus to enable communication
with an external PDU or scan tool.
¥ Provides temporary back-up power to operate
the airbags in the event of loss of battery
supply in an impact.
¥ In the event of an impact, records certain
data for subsequent access via the data link
connector. This data includes deceleration
information, firing delay and fault codes.
The RCM is bolted to the top of the driveshaft
tunnel below the center stack. Due to the
importance of the module being securely fixed to
the vehicle body, the ground connection is made
via the fixing bolts and is monitored by the
diagnostic system. A bad connection causes a fault
code to be generated.
Note:The torque settings are safety critical and
the figures given in the JTIS Service instructions
must be adhered to. RESTRAINTS CONTROL MODULE
D.418.233
detection signal received from either the LH or RH
Side Impact Sensor in order to deploy the
corresponding airbag.
Note:An impact at an oblique angle may cause
both frontal and side airbags to deploy, depending
on how much lateral acceleration is sensed.

JAGUARS-TYPEOccupant Protection
37
D.418.445
SIDE IMPACT SENSORSide Impact Sensor
The side impact sensors are mounted on brackets
attached to each inner sill.
The side impact sensor contains an electronic
discriminator sensor which detects side impacts
above a set threshold and signals a deployment
request to the RCM. Bag deployment only occurs
if the side safing sensor in the RCM has also
detected an impact.
The side impact sensor monitors its own internal
state, including correct ground connection, and
sends a regular ÔheartbeatÕ signal to the RCM
indicating that it is functioning correctly and is
available.
A 2 wire cable is connected between the RCM
and the side impact sensor. The cable has a dual
function, supplying power to the side impact
sensor and transmitting digital data to the RCM.
Diagnostics
The restraints control module (RCM) performs all
SRS diagnostics except those relating to the side
impact sensor internal faults and grounding faults.
When the ignition is switched on, the RCM carries
out a system Ôprove outÕ over an 8 second period
during which the airbag warning lamp on the
instrument pack is lit for the first 6 seconds.
During the prove out period all circuits connected
to the RCM are tested and also the state of the
RCM and side impact sensors (including ground
resistance and supply voltage).
If no faults are detected, the airbag warning lamp
remains off after the 8 second period.
If a fault is detected the warning lamp flashes a
two digit code five times and then remains lit until
the ignition is switched off. This is repeated on
each ignition cycle until the fault is cleared. Fault
codes are allocated a priority and if more than
one fault is stored in the RCM memory, the
highest priority fault is flashed. When this fault is
rectified, the next priority fault is indicated.
If the warning lamp itself is inoperative, the RCM
stores a fault code but no other action occurs. If a
system fault occurs when the lamp is inoperative,
a five ÔbleepÕ audible warning is sounded five
times with 5 second intervals. The audible
warning is repeated every 30 minutes and on
subsequent ignition cycles until the fault is
cleared.
If no faults are found during the system prove out
period the RCM continues to test the SRS system
during the remainder of the ignition cycle.Fault diagnosis of the side impact sensor is
normally carried out using the portable diagnostic
unit (PDU). Where the PDU is not available, the
flashing code on the airbag warning lamp indicates
the likely circuit or component fault.

JAGUARS-TYPEChassis
59
D.211.248
FRONT STEERING ARM requires a Service tool to assist removal. Low-
pressure hose connections are made using
Constant Tension (CT) clamps. Pinion hydraulic
connections are orientated with the bottom
connector low pressure with the longer nut, as
current vehicles.
The PAS fluid is for PAS only; it is not to be used
for transmissions. After manual filling, the system
must be bled using a vacuum pump to remove all
the air from the system to prevent system noises.
Fluid level is checked through a sight window on
the reservoir.
Components replaceable are complete pump,
steering rack, reservoir or hose assembly.
A non-serviceable 10-micron filter is located
within the reservoir to maintain fluid cleanliness
throughout the life of the vehicle. It is essential as
with all Jaguars that the system does not become
contaminated. Cap all ports on disassembly to
prevent contamination ingress. As with current
vehicles, the fluid and reservoir must be renewed
if any major component is replaced i.e. Rack,
pump or cooler.
The road wheels should be set straight ahead and
the steering wheel locked (using service tool
F7LC-3F732-BF) when removal and assembly of
the steering gear or intermediate shaft is required.
This is necessary to prevent damage to the air bag
clock spring within the steering upper column
assembly. The intermediate shaft can only be
assembled to its mating components in one
location. Steering wheel alignment can only be
achieved by adjustment at the tie-rods. A
dimensional check of the steering rack position
may be necessary to verify rack centre.
Steering Column
The steering column assembly is completely new
and uses no parts from previous Jaguar
assemblies:
¥ Construction of the upper column assembly is
based on the use of aluminium extrusions and
castings.
¥ A two shaft lower column assembly is used.
¥ The electronically controlled steering lock, the
steering column lock module (SCLM), is a
physically separate component from the
ignition switch which is fascia mounted.
¥ The dynamic stability control (DSC) steering
wheel position sensor is fitted to the upper
column assembly.
Steering Wheel
The steering wheel consists of a magnesium
armature with a central steel insert. The steering
column and wheel insert are splined with a flat so
that the wheel can only be fitted in one position.
Any misalignment of the steering wheel is
corrected by adjusting the tie rods. The splined
fitting also has a locking taper which requires the
use of a 2 legged puller to remove the wheel.
The steering wheel incorporates the the airbag
module, horn mechanism and the optional cruise
control and audio/phone switches.

JAGUARS-TYPEElectrical/Electronic
76Air Conditioning Control Module (A/CCM)
The A/CCM is connected to the SCP
communication network. The A/CCM controls
automatic climate functions that maintain the
vehicle at a constant temperature setting.
Instrument Pack
The instrument pack is connected to the SCP
communication network. The instrument pack
displays information received on the SCP
including speedometer, odometer, fuel, and
message center warnings. The instrument pack
also controls the passive anti-theft system (PATS).
General Electronic Control Module (GECM)
The GECM is connected to the SCP
communication network. This module is located
behind the LH ÔAÕ post trim panel below the
fascia. The GECM controls many of the bodysystems, being directly linked to the interior
lighting, wiper and security systems. It is a support
module for other systems including exterior
lighting, locking, remote entry, mirrors
(passenger), seat/mirror/steering column memory
recall and windows.
Rear Electronic Control Module (RECM)
The RECM is connected to the SCP
communication network. This module is located in
the passenger side luggage compartment behind
the trim panel. The RECM controls the
locking/unlocking of the front passenger and rear
doors and provides power control of the fuel
pump.
Powertrain Control Module (PCM)
The PCM is connected to the SCP communication
network. For the location of this module see the S-
TYPE Powertrain Technical Guide The PCM
controls the engine performance, electronic
ignition, emission controls, speed control,
transmission and on board diagnostics.
Steering Column Lock Module (SCLM)
The SCLM is connected to the SCP communication
network. The module is an integrated unit
containing the steering column lock and lock drive
and is controlled remotely from the separate
ignition barrel.
Restraints Control Module (RCM)
The RCM is connected to the ISO 9141
communication network. The RCM controls the
deployment of the air bags based on sensor
inputs.
Vehicle Emergency Control Module (VECM)
The VECM is connected to the SCP
communication network. The module allows a
user to request emergency assistance (police,
ambulance, fire, wrecker) or directions to a
desired location at the touch of a button. Also, if
any of the vehicleÕs airbags are deployed while the
VEMS system is powered ON, the system
automatically issues a call for emergency
assistance.
Voice Activation Control Module (VACM)
The VACM is connected to the SCP
communication network. This module is located in
the driver side luggage compartment behind the
trim panel. The VACM controls and processes all
D.418.229
GENERAL ELECTRONIC CONTROL MODULE (GECM)
Inertia Switch
Secondary
Junction Box
General Electronic
Control Module

JAGUARS-TYPEElectrical/Electronic
95
Instrumentation and Controls
1. Instruments pack
2. Wipers/washers and headlamp power
wash switches,
3. Trip computer switches,
4. Hazard warning switch,
5. Audio system control panel,
6. Cassette stowage, telephone presenter or
navigation display,
7. Climate control panel,
8. Ashtray and cigar lighter,
9. Traction control or dynamic stability
control switch,
10. Sports mode switch,
11. Front seat heater switches,
12. Coin tray,
13. Cruise control switches,
14. Horn and driverÕs airbag,
15. Audio switches,
16. Dimmer switch,
17. Bonnet release lever,
18. Headlamp levelling switch,
19. Fuel filler flap release switch,
20. Luggage compartment release switch,
21. Exterior lighting switch,
22. Direction indicators and main beam
switches,
1
7
8
9 10 11 12 13 19
16 17 18 20 21 22
142
3
45
6
15
Instrument Pack
Vehicle instrumentation is installed on the
instrument pack on the fascia. The calibration of
the odometer and speedometer, the language of
the message center and the composition of the
indicator lamps are tailored to suit the destination
market. The instrument pack acts as a system
monitor for the audible and visual warnings.When the ignition switch is turned to position II,
the following visual warnings (telltales) are
illuminated for three seconds to provide a bulb
prove out function:
¥ ABS telltale
¥ Airbag telltale (six seconds prove out)
¥ Catalyst over temperature telltale (Japan only)
¥ Charging system telltale

JAGUARS-TYPEElectrical/Electronic
96
JOL.002
1. Engine temperature gauge
2. Direction indicators
3. Tachometer
4. Front fog lamps on
5. Traction control/DSC warning light
6. Main beam on
7. Rear fog lamps on
8. Speedometer
9. Fuel gauge
10. Overspeed Warning (Middle East markets
only)
11. Airbag system warning light
12. Seat belt warning light - driverÕs seat belt not
fastened13. Anti-lock braking system warning light
14. Brake warning light
15. Message center warning light - primary
warning
16. Message center display - displays odometer,
trip, status/warning messages
17. Message center amber warning light -
secondary warning
18. Check engine warning light
19. Charge indicator warning light - high or low
battery voltage or faulty generator
20. Low oil pressure warning light
21. High engine temperature warning light INSTRUMENT PACK
126 5 4
3
109 8 7
112
13 12 18 20 19 1416 15 17 21
¥ Low brake fluid / Park brake telltale
¥ Fail safe cooling / Engine overtemperature
telltale
¥ Check engine telltale
The driver warning chime provides the driver with
an audible warning for the ignition on, key in
ignition, all doors open and the headlamps on,
hood open, trunk open, lamps on and safety belt
not engaged. A chime will sound every one
second when a fault in the air bag circuit is
detected.
The driver is also provided with a visual message
or warning displayed in the information message
center.

JAGUARS-TYPEElectrical/Electronic
111 Steering Column Lock
The steering column lock is remote from the
ignition switch and controlled electronically.
When the ignition key is removed from the
ignition switch the steering column lock is
engaged. The lock is disengaged when the key is
placed in the ignition switch.
The lock can be clearly heard as it engages and
disengages.
In rare circumstances it may be necessary to
gently turn the steering wheel from side to side to
release the steering column lock.
Ignition Switch
The fascia-mounted ignition switch, on the right-
hand side of the steering column, has four key
positions:
0Ignition OFF, and the only position in which
the key can be inserted or removed. When
the key is removed the steering lock is
engaged.
IAuxiliary position: this position allows use of
some electrical circuits, for example, window
operation.
The airbag system is activated when the
switch is turned to position ÔIÕ.
II Ignition ON: all electrical circuits except the
starter motor are activated. The key remains
in this position when driving.
III Start position: the starter motor is operated
for as long as the key is held in this position,
against spring pressure.
Smart Locking
This feature helps prevent locking the key in the
vehicle.
If the driverÕs door is open and an attempt is
made to lock the doors using the driverÕs door
interior locking lever, all doors will lock and the
driverÕs door only, will then become unlocked.
If the front passenger door locking lever is used to
lock the doors then all doors will become locked
and then unlocked. The vehicle can then be
locked using the key in the driverÕs door lock or a
key-ring transmitter.
Child Safety Locks
Child safety locks are fitted to the rear doors. The
operating lever is fitted above the door lock
mechanism.
To operate: Open the door and move the lever a
quarter turn. This immobilises the interior handle.
JOL.050
IGNITION SWITCH
JOL.048
The door can then only be opened using the
exterior door handle.
Open the door and move the lever to its original
position to remove the child lock feature.CHILD SAFETY LOCK

JAGUARS-TYPEElectrical/Electronic
123
JOL.136
Quarter-turn Fastener
CD Load Cover
NAVIGATION CONTROL UNIT/CD MAP LOADER controls are incorporated into the Navigation
Head Unit, there is no remote control. Antennas
are integrated into the front and rear bumpers.
Harnesses for the TV are incorporated in all
Japanese vehicles.
Jaguar Assist (North America only)
Assist is an integrated vehicle emergency message
system (VEMS) that uses the Jaguar security
response center for emergency roadside
assistance via the Jaguar in-car telephone
installation. The global positioning system (GPS) is
used to identify the position, direction of travel
and speed of the vehicle. Access to the Assist
feature is through the use of the Navigation
system. The emergency assistance feature allows
rapid access to the emergency services (police,
fire or ambulance) and roadside assistance. Once
assistance has been requested and the vehicle
location confirmed, the appropriate services are
contacted for assistance to be dispatched. In the
unfortunate event of an airbag deployment, the
system will automatically place an emergency call.
Access to the system is gained by pressing the
information button on the Navigation front panel
screen (the ignition must be in position ÔIÕ or ÔIIÕ).
While in use, a sequence of messages is displayed
on the LCD.
Note: If an Assist call is initiated and the operator
cannot establish voice communication, police
assistance will be dispatched to the vehicle.
The system can be used wherever a cellular
phone service is available. The Jaguar phone must
be connected to the vehicle, working correctly
and registered with a cellular network. A roaming
airtime agreement is required so that the system
can be used in all areas.
Diagnostic Light
A diagnostic light is integrated into the
information (ASSIST) button. The diagnostic light
flashes throughout an activation but stays on
continuously when a failure is detected. A
message is given on the display: ÔASSIST
FAILUREÕ. There are four potential failure modes:
1. No VEMS menu is displayed when the
information ASSIST button is pressed
2. No activation is performed when the enter
button is pressed to make a selection3. VEMS is unable to compute the location of
the vehicleÕs current position
4. The Navigation system is unable to display
any VEMS messages or would display the
wrong VEMS messages.
Real Time Traffic Information (RTTI)
In the UK the provider for RTTI is ÔTrafficmasterÕ.
Information is collected from their own unique
network of infra-red road sensors which monitor
the average speed of traffic. This information is
sent by radio data link to TrafficmasterÕs
operational headquarters. After processing and
editing the information, it is transmitted in real
time, in words and graphics to Trafficmaster
control modules installed in vehicles. RTTI will not
be available on early vehicles but could be Dealer
fitted retrospectively.
Other markets will use different traffic congestion
information services which will depend on market
infrastructure and service provider support. Japan
will use the ÔVehicle Information and
Communications SystemÕ (VICS).