API SH JAGUAR X308 1998 2.G Workshop Manual

Electrically Programmable
R
ead-Only memory
EPROM
Ele
c
tronic Secondary Air
Injection
EAIRA p
ump-driven system for providing seco
ndary air using an electric air pump
Engine C
ontrol Module
ECM
End of dashEODR
e
ferring to a vehicle fascia, eg EOD air vent
Engine
C
oolant Level
ECL
Engine
C
oolant
Temperature
ECT
ECT Sen s
or
ECTSTherm
i
stor which provides engine coolant temperature signal to the ECM to
trigger enrichment circuits which increase injector 'on' time for cold start and
warm-up
Engine s
peed
RP
M
Environ m
ental Protection
Agency
EPA
Evaporative EmissionEVAPSy stem designed to prevent fu
el vapor from escaping into the atmosphere.
Typically includes a charcoal filled canister to absorb fuel vapor
Evaporative Emission
Control ValveEVAPP
Exhaust G
as Recirculation
EGRSys
t
em which reduces NOx emissions by adding exhaust gases to the
incoming fuel/air charge
Exhaus t G
as Recirculation

Solenoid Vacuum Valve
EGRS
Exhaus t G
as Recirculation

Temperature Sensor
EGRT Sen s
or
Exhaus
t G
as Recirculation

Valve
EGRV
F
F a
n Control
FCEngine

cooling fan control
F
e
deral Motor Vehicle
Safety Standard (US)
FMV S
S
Fi
gur
e
Fi
g.Illustrati
on reference
Flash
E
lectrically Erasable

Programmable Read-Only
Memory
FEE PR
OM
Flash
E
rasable
Programmable Read-Only
Memory
FEP R
OM
Flywhee
l
Sensor
CKFSSens
or moun
ted so as to be
triggered by each flywheel ring gear tooth to give
an engine speed signal
Fue l
Injectors
FISol
e
noid operated devices that spray a metered quantity of fuel into the inlet
ports
F u
el Pressure Regulator
Control
FP RCControls fuel pressure regu l
ator; used primarily to
give extra fuel at cold
start-up
Fue l
Pump
FP
Fue
l
Pump Monitor
FP
MMonitors operation of fuel pump
Fue l
Pump Relay
FP
R
Fu
el rich/lean
Q
u
alitative evaluation
of air/fuel ratio based on a ratio known as
stoichiometry, or 14.7:1 (Lambda)
F u
ll Scale Deflection
FSDTh
e
maximum indication point on
an analogue meter or gauge
G
Gene
rator
GENRot
a
ting machine which converts mechanical energy into electrical energy
G
r
amme centimeter
gcm
Gramm
e
(force)
gf
Gramm
e
(mass)
g
GroundGNDEle
c
trical conductor used
as a common return for an electrical circuit or
circuits, and with a relative zero potential
H
Hard f a
ult
A
fau
lt currently present in the system
HeadlampHL
Heat
ed Oxygen
Sensor
HO2SElectrically
h
eated oxygen sensor which induces fueling corrections
Hertz (frequency)HzFrequ
e
ncy, one cycle per second
High
Moun
ted Stoplamp
HMSL

W
heels and Tires - Wheels and Tires
D
iagnosis and Testing
General Not

es
1.
1. Factory in
stalled tires and wheels are designed to provide optimum ride and ha
ndling characteristics when inflated
to the recommended inflation pressures, with vehicle loads not exceeding the full-rated load capacity.
2. 2. Correct tire pressures and driv ing technique have an important influence on tire life. Heavy cornering, excessively
rapid acceleration and unnecessary sharp braking increase tire wear.
3. 3. Replacement tires should follow the recommended:
Size
.
Speed

rating.
Load range. Radial c

onstruction type.
4. 4. The use of any other size or type of wheel / tire may seriously affect:
Safety. Ri
de.
Handlin

g.
Speed

ometer / odometer calibration.
Vehi

cle ground clearance.
Ti

re clearance between
body and chassis.
Wh
eel bearing life.
Brake cooli

ng.
5. 5. Wheels must be renewed when:
Impact damaged. Heavil
y corroded.
Porous W

heel stud holes or se
ats become damaged.
They h
ave excessive radial or lateral runout.
Safety Notes
• WAR

NINGS:
DO NOT MIX DIFFERENT TYPES OF TIRES ON THE SAM E VEHICLE, HANDLING MAY BE SERIOUSLY AFFECTED
RESULTING IN LOSS OF CONTROL.
DO NOT MIX DIFFERENT TYPES OF TIRES ON THE SAM E VEHICLE, HANDLING MAY BE SERIOUSLY AFFECTED
RESULTING IN LOSS OF CONTROL.
A TIRE AND WHEEL MUST ALWAYS BE CORRECTLY MATCHED. WIDER OR NARROWER TIRES THAN RECOMMENDED
COULD CAUSE DANGER THROUGH SUDDEN DEFLATION.
WHEN USING THE TEMPORARY SPARE WHEEL, SPEED MUST NOT EXCEED 80 KM/H (50 MPH). DRIVE WITH CAUTION
AND REPLACE WITH THE SPECIFIED WHEEL / TIRE ASSEMBLY AS SOON AS POSSIBLE.
TRACTION CONTROL (IF AVAILABLE) MUST NOT BE ENGAGED WITH THE TEMPORARY SPARE WHEEL FITTED.

D4: CHECK
BRAKE FLUID LEVEL
Check the brake master cyli
nd
er reservoir fluid level.
1
Is the fl
ui
d level OK?
Yes BLEED the brake system. For additional information, re fer to General Procedures in this section. TEST
the system for normal operation.
No CHECK brake master cylinder reservoir sealing points. For additional information, refer to Brake
Master Cylinder in this section. ADD fluid and BL EED the brake system. For additional information,
refer to General Procedures in this section. TEST the system for normal operation. REPEAT road test if
necessary.
P I
NPOINT TEST E : THE
PEDAL GOES DOWN FAST
TES
T
CONDITIONS
D E
TAILS/RESULTS/ACTIONS
E1
:
ROAD TEST VEHICLE
Road test and apply th
e brake peda
l.
1
Is th
e brake pedal ef
fort an
d brake pedal travel normal?
Yes Vehicle is OK.
No GO to E2
.
E2: CHECK BRAK
E FLUID LEVEL
Check the brake master cyli
nd
er reservoir fluid level.
1
Is
t
he fluid level within specification?
Yes GO to E3
.
No
CH
ECK the brake master cylinder reservoir sealing po
ints. For additional information, refer to Brake
Master Cylinder Component Test in this section. ADD fluid and BLEED brake system. For additional
information, refer to General Proc edures in this section. TEST the system for normal operation.
REPEAT road test if necessary.
E3 : CHECK BRAK
E PEDAL TRAVEL-PRESSURIZE SYSTEM
Pump th
e brake pedal rapidly (f
ive times).
1
Does th
e brake pedal trav
el build up and then hold?
Yes BLEED the brake system. For additional information, re fer to General Procedures in this section. TEST
the system for normal oper ation. REPEAT road test.
No GO to E4
.
E4: CHECK FOR
BRAKE SYSTEM LEAKS
Chec
k for e
xternal brake system leaks. For additional information, refer to Master Cylinder in this
section.
1
Are le aks foun
d?
Yes REPAIR as necessary, ADD fluid and BLEED brake syst em. For additional information, refer to General
Procedures in this section. TEST the system for normal operation. REPEAT road test.
No System is OK.
PINPOINT TEST
F : THE PEDAL GOES DOWN SLOWLY
TES
T
CONDITIONS
DE
TAILS/RESULTS/ACTIONS
F1
:
ROAD TEST VEHICLE - CHECK BRAKE PEDAL OPERATION
Chec
k
if the condition occurs duri
ng actual stopping application by applying the brake pedal while
the vehicle is moving.
1
Doe s
the condition occur when the vehicle is moving?
Yes GO to F2
.
No
GO to F
3
.
F2:
CHECK
FOR BRAKE SYSTEM LEAKS
Chec
k for e
xternal brake system leaks. For additional information, refer to Master Cylinder in this
section.
1

Anti-Lock Control - Anti-Lock Control
Description and Operation


Wheel Spe
ed Sensors
Each
wheel is monitored by a wheel speed se n
sor, to detect the speed of movement of
a toothed gear that is driven by the
wheel. Signal's generate d by the toothed gear passing th e sensor are sent to the ABS/TCCM to communicate the speed of
wheel rotation and any rapid change of wheel speed.
The frequency of the sinusoidal output voltag e signal from the sensor, is proportional to road wheel rotational speed and the
number of teeth on the toothed gear. The amplitude of the volt age is dependent upon the 'air gap' between the sensor and
toothed wheel, therefore it is important that this preset gap remains clear and undisturbed.
Ite
m
De
scr
iption
1Pe
dal Housi
ng / Booster - refer to 206-07
2Vac
u
um Hose - refer to 206-07
3Mas
t
er Cylinder / Reservoir - refer to 206-06
4Pri
m
ary Brake Circuit - refer to 206-06
5Sec

ondary Brake Circuit - refer to 206-06
6Hydraulic

Pump / Motor Unit
7ABS/Traction

Control Control Module (ABS/TCCM)
8Hydraulic Cont

rol Unit (HCU)
6/
7/
8
Br
ak
e Control Modulator
9Brake
Di
sc - refer to 206-03 or 206-04
10Brake
Cali
per - refer to 206-03/206-04
11Wh
ee
l Speed Sensor
12ABS Warning Lamp
13Brake
Fl
uid Level Warning-Lamp - refer to 206-06

It is a reciprocating two
-circuit pu
mp in which one brake circuit is as signed to each pump circuit.
It supplies th
e fluid pressure and vo
lume to supply the brake circuits under ABS and Traction control.
The pump is driven by an electri
c motor, with the pump
housing incorporating two lo w pressure accumulators and
damping chambers for each brake circuit.
The ac cu
mulator stores the pressure and smooths out the output pu
lses from the pump.
ABS Warning Lamp
The sys
tem will be set in a fail-safe mode if a problem is de
tected; a warning lamp on the instrument panel will notify the
driver there is a problem.
Anti-Lock Braking Sy
stem (ABS)
The AB
S components are combined with
an hydraulic booster and a tandem master cylinder to provide a two circuit braking
system. The system comprises, four wheel speed sensor s, a brake control modulator and an ABS warning lamp.
Should a wheel start to lock-up during braking a signal tr ansmitted from the wheel speed sensor to the brake control
modulator will start the hydraulic pump. The brake control modula tor will close the input valve of the line connected to the
locked-wheel to stop any increase in fluid pressure to the br ake caliper. If this fails to prevent the wheel locking, the
pressure in the caliper will be decreased by opening the return valve until th e wheel starts accelerating again. The fluid
pressure from the return va lve is directed into the low pressure accumulator, housed in the pump.
From the low pressure accumulator, fl uid is pumped through the damping cham ber to the brake master cylinder. The
pressure to the brake caliper will then be increased in small steps to maintain maximum adhesion between the tire and road
surface. This is achieved by closing the return valve, and opening the input valve and using the hydraulic pump to increase
the pressure.
Although the system senses all four wheels independently, the rear wheels are regulated as a pair. If a sensor on a rear
wheel detects a wheel decelerating rapidly, then the fluid pressure to both wheels is reduced. The fluid pressure is then
dictated by the wheel having the lowe st adhesion with the road surface.
The ABS system will be set in a fail-safe mode if a problem is detected; a warn ing lamp on the instrument panel will notify
the driver there is a problem. The brake system will still operate conventionally and with the same standard of performance
as a vehicle not equipped with ABS.
Automa tic Stability Control (ASC)

Th
e ASC utilizes the ABS sensing arrangement to provide the maximum traction force to propel the vehicle.
The ASC is switched on when the engine is started. The system can be switched off by pressing the 'ASC OFF' (the switched
is marked 'TRAC OFF' on vehicles fitted with traction control). The switch, which is situated in the center console switchpack,
lights up to warn that the system is sw itched off. An 'ASC' amber warning light flashes on the instrument panel when the
system detects a spinning wheel.
The ASC system uses engine intervention to reduce the torque delivered to the drive wheels to prevent them spinning.
Engine torque is re duced in three ways:
The
throttle is moved towards the closed position.
The ignition is retarded. F
u
el is cut-off at the cylinder injectors.
Wheel spin is detected by the wheel sp eed sensors and communicated to the AB S/TCCM. The ABS/TCCM uses information
from the controller area network (CAN) to calculate the torque that the engine should produce to stop the wheel spinning.
Torque reductions are then requested from the engine control module (ECM ) through the CAN. The throttle is then
positioned to provide the target torque, which has been calculated to prevent wheel spin. During the transient phase of
torque reduction the fuel is cut-off and th e ignition retarded Both the fuel cut-off an d ignition retard will be restored to
normal when the throttle is set to its new position.
The ASC uses a brake control modulator with six solenoid va lves: three normally open inlet valves and three normally

Fo
r additional information, REFER to the
Electrical Checks and Tests in this section.
Steering control
module
(SCM) defective.
CHECK
the SCM and INSTALL a new SCM as

necessary.
Power steeri ng f
luid
delivery pressure or flow too low.
CHECK
the power stee
ring pressure. For
additional information, REFER to the Power Steering Pressure Test in this section.
INSTALL a ne
w power steering pump as
necessary. For additi onal information,
REFER to Section 211
-0 2
Power Steering
.
Internal steering gear
leakage.
CHECK
the power stee
ring pressure. For
additional information, REFER to the Power Steering Pressure Test in this section.
INSTALL a ne
w steering
gear as necessary.
For additional information,
REFER to Section 211
-0 2
Power Steering
.
Steeri
ng operati
on is very
heavy when driving, but when stationary
manoeuvring is good
Steering transducer open earl
y.
CHECK

steering transducer and INSTALL a
new steering transducer as necessary.
Carry out th
e electrical checks and tests.
For additional information, REFER to the
Electrical Checks and Tests in this section.
Steering transducer open
early,
steering control
module (SCM) fault.
CHECK
SCM and INSTALL a new SCM as
necessary.
Steering transducer open
earl
y, speedo signal error.
CHECK
speedo
circui
t. For additional
information, REFER to the wiring diagrams.

Steeri ng operati
on is very
light when driving, but when
stationary manoeuvring is good
Steering transducer not
o
pen, (no power steering
fluid flow).
CHECK
the power steering fluid condition.
For additional information, REFER to the
Power Steering Fluid condition check in this section.
Steering transducer not o
pen, steering control
module (SCM) fault.
CHECK
the SCM and INSTALL a new SCM as

necessary.
Carry out th
e electrical checks and tests.
For additional information, REFER to the
Electrical Checks and Tests in this section.
Steering transducer not
o
pen, speedo signal error.
CHECK

the speedo circ
uit. For additional
information, REFER to the wiring diagrams.

CHECK
the power steering
fluid low pressure pipe for restricted flow.
INSTALL a ne
w power steering fluid low
pressure pipe.
S t
eering heavy operation
during rapid manoeuvring
Ai r i
n power steering
system.
CHECK for an air l
eak into the power
steering system and re pair as necessary.
BLEED the
power steering system. For
additional information,
REFER to Power Steering System Bleeding
- in t hi
s section.
Fluid loss at the power
steering pump shaft seal.
CHECK the power steer
ing pump for signs o
f steering fl
ui
d loss.
INST
ALL a ne
w power steering pump as
necessary. For additi onal information,
REFER to Section 211
-0 2
Power Steering
.
Power steeri
ng f
luid
delivery pressure or flow too low.
CHECK the power steer
ing pump for signs o
f steering fl
ui
d loss.
CHECK

the power stee
ring pressure. For
additional information, REFER to the Power Steering Pressure Test in this section.
INSTALL a ne
w power steering pump as
necessary. For additi onal information,
REFER to Section 211
-02
Power Steering
.
Lower steeri
ng col
umn
interference.
CHECK
the steering co
lumn is free from
interference from the en gine harness, sound
proofing or the floor covering.
Incorrect steering geometry. CHE
CK the front wheel alignment. For
additional information,
REFER to Section 204
-00 Sus
pension
Sy
ste
m
- General

Information
.
CHECK

the power stee
ring pressure. For

Description of General Stee
ring System Noises
Boom
Rh
ythmic sound like a drum roll or distant
thunder. May cause pressure on the ear drum.
Buzz
Low-pitched soun
d, like a bee. Usually associated with vibrations.
Chatt

er
Rapidly rep

eating
metallic sound.
Chuckle
Rapid noise that soun
ds like
a stick against the spokes of a spinning bicycle wheel.
F
eedback (knocking noises in the
steering gear) - condition where roughness is felt in the steering
wheel by the driver when the vehicle
is driven over rough surfaces
REF
ER to Section 211
-0
3 Steering Linkage
.
Steeri

ng gear
retaining bolts
loose or damaged.
CAU
TION: DO NOT attempt to adjust the
steering gear yoke. Failure to follow this instruction
will result in the steering gear warranty to become
invalid.
CHECK
and TIGHTEN the steering gear
retaining bolts.
INST
ALL new retaining bolts as necessary.
For additional information,
REFER to Section 211
-0
2 Power Steering
.
L

oose suspension
bushing, bolts or ball joints.
TIGHTE
N or INSTALL new components as
necessary. For additi onal information,
REFER to Section 204
-01
Front Suspension
.
Steeri

ng column
retaining bolts loose.
CAU
TION: DO NOT attempt to adjust the
steering gear yoke. Failure to follow this instruction
will result in the steering gear warranty to become
invalid.
CHECK
and TIGHTEN the steering column
retaining bolts/nuts and pinch bolts if required. For additional information,
REFER to Section 211
-0
4 Steering Column
.
Exce

ssive wear in
steering column assembly.
CHECK
for steering column for wear in the
universal joints and be arings. If wear is
present, INSTALL a new steering column as
necessary. For additi onal information,
REFER to Section 211
-0
4 Steering Column
.
Ni

bble (Shimmy) Oscillation of the
steering wheel (not vertical which is SHAKE). This is driven by road wheel imbalance.
Road wh
eel
imbalance.
CHECK
for road wh
eel imbalance.
CHECK for
rele
vant SERVICE
BULLETINS/SERVICE ACTIONS for the
vehicle on Jaguar Communications Online (JCOL) or in hard copy form.
S
teering wheel
replacement.
CHECK for
rele
vant SERVICE
BULLETINS/SERVICE ACTIONS for the
vehicle on Jaguar Communications Online (JCOL) or in hard copy form.
Rac
k replacement.

CHECK for
rele
vant SERVICE
BULLETINS/SERVICE ACTIONS for the
vehicle on Jaguar Communications Online (JCOL) or in hard copy form.

High pitched rapidly repea
ting sound, like chirping birds.
Cli
c
k
Ligh
t sou
nd, like a ball point pen being clicked.
Click
/
Thump
Heav
y
metal-to-metal sound, li
ke a hammer striking steel.
Grin
d
Abrasiv
e
sound, like a grinding wheel or sandpaper rubbing against wood.
Gr
oan
/Moan
Continu
o
us, low-pitched humming sound.
Groan

/Howl
Low, guttural sound, like an an
gry do
g.
Hiss
Continuous sound

like air escaping from a tire valve.
Hum

Continu o
us sound of varying frequencie
s, like a wire humming in the wind.
Knock

Heavy, loud repeat
ing sound like a knock on a door.
Pi
n
g
Si
mi
lar to knock, except at higher frequency.
Ratt
le
A s
ound suggesting looseness, such as marbles rolling around in a can.
Roar

Deep, long, prolonged sou
nd like an
animal, or winds and ocean waves.
Rumble

Low, he
avy cont
inuous sound like that made by wagons or thunder.
Scrape


Grating no
ise l
ike one hard plastic ru
bbing part rubbing against another.

Chir
p

Steering System - General Information - Power Steeri
ng System Flushing
Gen
e
ral Procedures
• NOTE: If heavy steering or contamination within the power steering system is found, it is necessary to carry out the
system flush procedure as detailed below. If any components have been replaced in the power steering system the
procedure below must be carried out in full.
• NOTE: Some variation in the illustrations may occur, but the essential information is always correct.
1. Remove the power steering fluid reservoir cap.
2. Using a suitable syringe, remove the power steering fluid from
the power steering fluid reservoir.

3. CAUTIO
N: Be prepared to
collect escaping fluids.
• NOTE: Note the orientation of the clip. Detach the power steeri ng fluid reservoir.
De
tach but do not remove the power steering fluid
reservoir.
Re lea
se the power steering fluid return hose from the
power steering fluid reservoir.
If a qui
ck release coupling is fitted to the power
steering return ho se, release the powe r steering fluid
return hose from the coupling by removing the clip.

4. CAUTIO
N: Be prepared to
collect escaping fluids.
• NOTE: Make sure that all openings are sealed. Use new
blanking caps.
Using a suitable blanking cap, cap the power steering
reservoir return pipe.
5. CAUTIO
N: Be prepared to
collect escaping fluids.
• NOTE: Make sure the extended pipe is not kinked or twisted
and is correctly secure d with hose clips.
Attach a suitable pipe to the power steering return hose to
allow the fluid to drain.

6. NO
TE: The suitable funnel should have the a capacity of 4
litres and O-ring seal
• NOTE: The suitable funnel must be tightly sealed to the
power steering fluid reservoi r to avoid fluid leakage.
Install a suitable funnel onto the power steering fluid
reservoir.
7. WARNING: Do not work on or under a vehicle supported
only by a jack. Always support the vehicle on safety stands.
Raise and support the vehicle with the wheels just clear of the
ground.
8. CAUTI
ONS:
Steps 8 and 9 must be carried out within 2 - 3 seconds of
each other. Failure to follow this instruction may result in damage
to the power steering system.
Be prepared to collect escaping fluids.
Using the suitable funnel, top up the power steering system
with the specified fluid. Make su re the fluid level is maintained
at two thirds full in the funnel.
9. CAUTI
ONS:
Be prepared to collect escaping fluids.