JAGUARS-TYPEChassis
56
D.206.177
current vehicles and the 12 valve unit has a 47-
way connector with lever cam. DSC calculates the
real vehicle motion (forward and gearing) and
compares it to the direction initially chosen by the
driver. A steering rate sensor is located on the
steering column and is used to calculate steering
angle. A yaw rate sensor and lateral accelerometer
are located on a bracket behind the hand brake
lever and are used to calculate the vehicle under
or over steer and any side slip.
As soon as DSC recognises that the driver is not
reacting sufficiently to compensate a deviation,
DSC intervenes by applying brake force to each of
the four wheels individually to control yaw
Front Wheel Sensor
The front wheel active ABS speed sensors are
incorporated into the wheel bearings, connected
via a flying lead routed along the brake hose.
Rear Wheel Sensor
The rear sensors are mounted on the hub carrier
and connected by a flying lead routed along the
control arm. None of the sensors are adjustable.
Wheel speed sensors are new active sensors,
which are more sensitive at lower speeds that the
current saloon and sports wheel speed sensors.
Front and Rear Callipers
Front callipers are twin piston aluminium
construction. The ventilated disc sizes are 300 mm
x 32 mm. The rear brakes have cast iron callipers.
This is because of the hand brake operation using
the rear callipers. The ventilated disc sizes are 288
mm x 20 mm. Each rear calliper has a ball and
ramp park brake mechanism, operating on the
main calliper pads.
D.206.178
D.206.177
FRONT WHEEL SENSOR
REAR WHEEL SENSOR
D.206.178
JAGUARS-TYPEChassis
57
D.206.176
BRAKE BOOSTER Brake Booster
The brake booster is a Lucas unit mounted on the
engine bay bulkhead with a 25.4mm diameter
master cylinder and integral brake fluid reservoir.
NOTE: The reservoir is also a combined
brake/clutch reservoir for manual transmission
vehicles.
Twin vacuum boosters of 8 inch and 9 inch sizes
are fitted.
The DSC booster is different having integral
pressure transducers and solenoids with air
control valves for the booster. The transducers are
located on the brake master cylinder and are used
for pressure feedback, brake application and fail
safe operation. The booster is used to supply
brake pressure without driver input.
ABS operation is no different to current Jaguar
vehicles.
Parking Brake
The parking brake lever is mounted on the RH
side of the centre console for all models, with
conventional button operation as current XJ
sedan. It is a self-adjusting system operating on
the rear brake callipers. All models have a leather
grip.
D.206.158
PARKING BRAKE
JAGUARS-TYPEElectrical/Electronic
74The SCP communication network will remain
operational even with severing of one of the bus
wires. Communications will also continue if one
of the bus wires is shorted to ground or battery
positive voltage (B+), or if some , but not all,
termination resistors are lost.
Unlike the SCP communication network, the
ISO 9141 communication network will not
function if the wire is shorted to ground or battery
positive voltage (B+). Also, if one of the modules
on the ISO 9141 network loses power or shorts
internally, communication to that module will fail.
Control Modules
The vehicle control module functions are
described briefly below (for further information
refer to the relevant sections throughout the
Guide).
Anti Lock Brake/Traction Control and
Dynamic Stability Control, Control Modules
The anti-lock brake control module is connected
to the SCP communication network. The module
comes in two forms. The first type is the standard
equipped anti-lock brake system (ABS) with
traction control (TC). It controls the brake
pressure to the four wheels to keep the vehicle
under control while braking.
The second type of ABS is optional and is called
dynamic stability control (DSC). This control
module adds yaw sensors to the package to help
in sensing a loss of vehicle control.
Audio Control Unit
The audio control unit is connected to the SCP
communication network and also to the audio
control protocol (ACP) communication network.
The audio control unit communicates with the
compact disc and the cellular phone transceiver.
Driver Door Control Module (DDCM)
DDCM is connected to the SCP communication
network. The module controls many functions
including power windows, driver mirror, power
locks, and keyless remote entry.Driver Seat Control Module (DSCM)
The DSCM is connected to the SCP
communication network. The DSCM is located
under the driver seat and controls the seat
positions. The module also communicates with the
DDCM to control the driver seat memory
functions.
Control Module Locations
Key to illustration on following page:
1.Anti-lock brake system/Traction control
system or Dynamic stability control
(ABS/TCCM or DSCCM)
(non-handed)
2.Throttle actuator control module (TACM)
(non-handed)
3.Powertrain control module (PCM) (handed)
4.Air conditioning control module (A/CCM)
(non-handed)
5.Restraint control module (RCM) (non-handed)
6.Sliding roof control module (SRCM)
(non-handed)
7.Passenger seat heater control module
(PSHCM) (non-handed)
8.Rear electronic control module (RECM)
(non-handed)
9.Vehicle information control module (VICM)
(Japan only)
10.Adaptive damping control module (ADCM)
(non-handed)
11.Parking aid control module (PACM)
(non-handed)
12.Navigation control module (NCM)
(non-handed)
13.Vehicle emergency control module (VECM)
(non-handed)
14.Voice-activated control module (VACM)
(non-handed)
15.Cellular telephone control module (CTCM)
(non-handed)
16.Driver seat heater control module (DSHCM)
(non-handed)
17.Driver seat control module (DSCM) (handed)
18.Driver door control module (DDCM)
(handed)
19.Instrument pack (handed)
20.General electronics control module (GECM)
(non-handed)
21.Steering column lock module (SCLM) (handed)
JAGUARS-TYPEElectrical/Electronic
82No Type Rating (amps) Colour Circuit
15 mini 5 Brown Adaptive damping module (ADRC)
16 mini 5 Brown Heated seat switch module,
electrochromic mirror, rain sensor
17 mini 5 Brown RCM, Generator warning lamp
18 mini 20 Yellow Radio, cellular phone, navigation unit
19 mini 15 Blue Steering column motors
20 mini 10 Red GECM, DATC, RECM, Instrument Pack,
brake shift interlock
21 mini 10 Red Power folding mirrors, electric sunblind
22 mini 10 Red DriverÕs door mirror, driverÕs door lock
motor
23 mini 10 Red Right-front high beam
24 mini 5 Brown Passive Anti-Theft System (PATS)
25 mini 10 Red Left-front low beam headlamp
26 - - - Not used
27 mini 10 Red Navigation display, radio, phone,
navigation module, Traffic Master
28 mini 5 Brown Battery-backed security sounder
29 mini 5 Brown Voice control, reversing aid, GECM,
Trailer tow ignition sense, VEMS
30 mini 5 Brown GECM
31 - - - Not used
32 mini 20 Yellow Accessory socket, cigar lighter
33 mini 10 Red GECM illumination power
34 - - - Not used
35 mini 5 Brown Stop lamp switch
Trunk Fusebox
No Type Rating (amps) Colour Circuit
1 mini 15 Blue Luggage compartment release solenoid
2 mini 10 Red Right rear direction indicators, back up,
fog lamps, side markers
3 mini 10 Red Left stop lamp
4 mini 10 Red Fuel door release solenoid
5 mini 10 Red Courtesy and map lamps
6 mini 10 Red Left rear direction indicators, back up,
fog lamps, side markers
7 mini 10 Red Right stop lamp
8 mini 10 Red Center high mounted stop lamp
9 mini 5 Brown Heated mirror
10 mini 5 Brown Traffic Master
11 mini 15 Blue Heated seats
JAGUARS-TYPEElectrical/Electronic
85 5. Switched system power 4 relay
6. Fuel pump relay
7. Brake shift interlock relay
Transit Relay
The purpose of the Transit Relay is to prevent the
battery from being discharged during transit and
Dealer storage. It automatically isolates the
battery following ignition off.
The transit relay is installed on the Negative line
through a spur from the trunk lighting harness
and is located on the battery Negative post.
If the vehicle is to be handed over to a customer
within a period of 24 hours of completion of the
PDI, the Transit Relay MUST be removed.
If the vehicle is NOT to be handed over to a
customer within a period of 24 hours of
completion of the PDI, a Transit Relay Test Lead
must be fitted to allow the PDI to proceed.
Under no circumstances should any means other
than the test lead be used to bridge the Transit
Relay.
The Transit Relay Test Lead MUST be removed
after the completion of the PDI and stored for
further use. Under no circumstances should the
vehicle be transported with the Transit Relay Test
Lead fitted.
The procedure to fit the Transit Relay Test Lead
and remove the Transit Relay is given in the PDI
Manual.
D.418.417
D.418.418
TRANSIT RELAY
TRANSIT RELAY FITTED
JAGUARS-TYPEElectrical/Electronic
93
J.418.448
REAR EXTERIOR LIGHTING
Stop
Brake Switch
LH Rear Lamp Unit
Direction Indicator
Tail
Fog
Reverse
Rear
Electronic
Control
Module
High Mounted Stop
Lamp
Number Plate Lamp
LH Side Marker
(NAS only)
Stop
RH Rear Lamp Unit
Direction Indicator
Tail
Fog
Reverse
RH Side Marker
(NAS only)
Number Plate Lamp
From
Instrument Pack
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
100
Exterior Lighting Switch
A. Timer
B. Auto
C. Off
D. Side (parking lamps)
E. Headlamps
F. Rear fog lamps
G. Front fog lamps (where fitted)
Autolamps Delayed Exit (A)
This feature leaves the headlamps turned on after
the ignition has been switched off, allowing the
driver and passengers increased visability on
leaving the vehicle. The switch has seven positions
and varies the time from three seconds up to
three minutes. After adjustment, the newly set
delay time will be displayed on the message
center.
Auto (B)
A light sensor on top of the instrument panel,
monitors exterior light levels and automatically
switches the side lamps and dipped headlamps on
or off. When light fades to the non-adjustable
preset level, the sidelamps and headlamps switch
on automatically. As light increases to the preset
level, the sidelights and headlamps switch off
automatically.Rear Fog Lamps (F)
Turn the switch to headlamps on, pull the switch
and then turn to position (F). Turning on the rear
fog lamps will also turn on the front headlamps.
Front Fog Lamps (G)
Pull the switch in positions (A), (B), (D) or (E) to
switch on the front fog lamps. Push to turn off. If
the rotary switch is turned off (C) the switch will
be retracted to its normal position and the fog
lamps will be turned off.
Daylight Running Lamps
In certain countries it is a legal requirement for
the lamps to be on during the hours of daylight.
With the rotary switch in the off position (C),
dipped headlamps, sidelights and tail and number
plate lamps will switch on automatically when the
ignition is turned to position II, the vehicle is out
of park (automatic transmission only) and the
parking brake is released.
Battery Saver
If the dipped or main beam headlamps are
switched on and the ignition is turned to OFF or
the key is removed, the lamps will automatically
turn OFF after 10 minutes. The sidelights will
remain ON.
Bulb Failure Monitoring
The tail and brake lamp bulbs are monitored for
failure and a corresponding message is shown in
the message center, e.g ÔLEFT TAIL LAMP FAILEDÕ.
There are two tail lamp bulbs in each tail lamp.
The message that a tail lamp has failed indicates
that both bulbs in that cluster have failed. The
message will be shown, even after a bulb is
replaced, until the next time the bulb is switched
on.
JOL.069
EXTERIOR LIGHTING SWITCH
A
F E D C
B
G