2005 JAGUAR S TYPE engine

JAGUARS-TYPEChassis
53
Driveline
Introduction
The driveline is a standard type with the engine
position at the front and driven rear axle. This will
be the first time that Jaguar has used in-plant
driveline balancing to improve noise, vibration
and handling. The driveline is finely balanced at
the rear driveshaft joint. The centre bearing is
laser aligned during initial factory build.
The alloy rear engine mountings have two
variants, one for automatic transmission and one
for manual transmission. They are both
serviceable items. The V6 auto is the same as the
V8 but rotated in plan by 180 degrees. The rubber
mountings are carry over concept from the
current XJ and XK Series vehicles but are not
D.307.322
DRIVELINE ARRANGEMENTinterchangeable with them. Both automatic
transmission rubber mountings are common but
with a softer unique mount for the manual V6
transmission.
In service if they are replaced, ensure that there
are buffer gaps and that they are approximately
equal. Neither will be contaminated by lubricant
or automatic transmission fluid.
Driveshaft
The S-TYPE has a two-piece welded steel tube
driveshaft with a splined centre slip joint and
locking collar, the whole being aligned with the
body centreline. The driveshaft has rubber flex
couplings and a rubber, body-mounted, centre
bearing. For safety, the front tube is collapsible.

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-TYPEChassis
58
Power Assisted Steering
Introduction
The Jaguar S-TYPE has a variable assist rack and
pinion steering gear and variable rack ratio. The
variable steering rack ratio reduces the number of
turns from lock to lock (2.8) to enhance parking
manoeuvrability whilst maintaining the on-centre
steering precision required at high speed. Full
power assistance is provided for parking. Steering
assistance decreases smoothly at a calibrated rate
to raise driver steering efforts as vehicle speed
increases.
Servicing
There are no carry over parts from XK or XJ Series
vehicles.
The rack is mounted to the rear of cross member
Number 2. The PAS pump is belt driven. A PAS
cooler matrix is located within the radiator
package.
Low PAS pump speeds problems are prevented by
increasing engine speed. A power steering
pressure (PSP) switch senses the demand on the
pump at low engine speeds and increases the
speed to a pre-set minimum.
Hose connections to the pump and the steering
gear are quickfit connectors. The quick connect
tube must be pushed into the existing tube nut
port, along the centreline. The assembly is
complete when the tube end bottoms out in the
port with an audible click/snap. Correct assembly
should be verified by pulling the quickfit tube end.
Servicing of the PAS line involves removal of the
quickfit nut. Replacement PAS lines are supplied
complete with quickfit nut and sealing washer. If
the joint is disturbed it is compulsory to replace
the PTFE sealing ring otherwise leaks are
inevitable. Replacement sealing washers may be
installed with the use of Service tool
D90P-3517-A.
Care must be taken when removing the quickfit
nut from the V6 engine pump as the pulley is
PHENOLIC and is susceptible to damage. The V8
pump installation provides a short jumper tube
from the pump to improve accessibility to the
high-pressure hose connection. The PAS pulley
D.211.247
PA S R AC K
D.211.258
POWER STEERING PRESSURE SWITCH

JAGUARS-TYPEClimate Control
64Control Panel
The control panel is a combined unit
incorporating the air conditioning control module
(A/CCM).
Heater/Evaporator and Blower
A single blower, heater and evaporator are fitted
to the passenger side of the vehicle behind the
fascia. Air intake is from the passenger side via
leaf screen slots (see page 16). A particle filter is
mounted forward of the bulkhead in a rain/water
collector box. Mounting of the heater/evaporator
unit and blower assembly is by three bulkhead
fixings and one locator pin.
Condensate drainage is integral with the
heater/evaporator unit and therefore has no
separate drain tubes. The heater matrix is a dual
heater unit with three heater pipes, two inlets of
16mm diameter and one outlet of 19mm
diameter.
D.412.217
Underbonnet Components
Both V6 and V8 engine configurations include a
water valve controlled heating (dual) system and
the valve is mounted behind the right-hand side
headlamp. The V8 engine system, as with current
cars, has a water pump to supplement idle water
flow through the heater and this is mounted on
the right-hand side of the cooling pack. The pump
is held in a mounting rubber, which is pushed
over two pillars on the rear of the fan shroud and
held with two screws.
Condenser
The black-painted aluminium condenser is located
to the front of the combi-cooler and mounts to its
end tanks. The condenser end tubes push into two
grommets, which are in turn held in two steel
brackets, screwed to the radiator end tanks. The
bottom of the condenser is screwed directly into
the radiator tanks. A radiator cooling duct clips
onto the condenser end tanks and also pushes
onto the lower radiator channel. The duct ensures
that all available airflow is directed through the
cooling module.
HEATER/EVAPORATOR AND BLOWER
Blower
Heater/Evaporator

JAGUARS-TYPEClimate Control
67 Pipework
The suction hose and liquid line are a one-piece
assembly. A single screw connects them to the air
conditioning unit manifold at the bulkhead. A
further screw fixing and push-in clip secures them
at the side of the engine bay. The liquid line fixed
to the cooling module then joins with a block
fitting and the suction hose connects with a quick
connect fitting and routes across the underneath
of the cooling module to the compressor. The
compressor suction and discharge hoses are also a
one piece assembly.
A pressure transducer is fitted to the discharge
hose as it connects to the rear of the condenser.
The high side charge port is situated on the
manifold connecting to the receiver drier whilst
the low side is adjacent to the compressor behind
the LH front wheel.
The compressor is a 9Occ scroll, which is variable
from 100% to 30%. Compressor is standard
specification to all vehicles although package
makes them unique to V6 and V8.
Air Distribution
Air distribution is as follows:
¥ Defrost duct integral with the fascia.
¥ Face vents, plenum, manifold, centre face
duct, side face duct, side window demist duct
are all sub-assembled into the fascia.
¥ Driver and front seat passenger foot ducts are
installed in the fascia after it has been fitted
to the vehicle.
¥ Rear foot ducts are fitted to the underframe.
¥ Rear face duct fitted to transmission tunnel.
¥ Rear face vent fitted to console.
¥ Extractor boxes fitted in rear quarter panels.
All flaps are electric servo controlled and
comprise:
¥ Fresh/recirculation - heater/evaporator unit.
¥ Cold air bypass - heater/evaporator unit.
¥ Foot flap - mounted on plenum.
¥ Defrost flap - mounted on plenum.
¥ Face flap - mounted on plenum.
Sensors, for operation of the system, are:
¥ Ambient temperature sensor - located behind
the lower front grille.
¥ Solar sensor - fitted to the top centre of the
fascia at the defrost grille
¥ In-car sensor - aspirated from the plenum
venturi sensor mounted inboard of the
steering column.¥ Two heater air outlet sensors
¥ One evaporator air outlet sensor
Servicing
Routine servicing consists of particle filter
replacement.
Replaceable items on the climate control system
are:
¥ Servo complete with linkages
¥ Sensors
¥ Evaporator and seals
¥ Heater core and seals
¥ Blower motor
¥ Impeller/blower motor wheel
¥ Hoses
¥ Registers/vents
¥ Ducts, except the defrost
¥ Defrost and side window demist grilles
¥ Control unit
¥ Compressor
¥ Water pump
¥ Water valve
¥ Receiver/drier
¥ Condenser
There are no panel diagnostics but PDU facility is
available with extensive capability, similar to
current XJ and XK Series.
System refrigerant is R134a. Vehicle charge weight
is 800 gms and charging is through the high side
charge port only.
Oil type is WSH-MIC231-B and refill quantity is
180 cc -220 cc.
Special tools are hose clamp pliers and air-
conditioning hoses spring lock de-coupler.
General information
Ensure that the grille at the base of the windshield
is kept clear of leaves, snow or other obstructions.
A solar sensor is mounted on top of the fascia, in
the centre of the defrost grille, and this should not
be covered.
The air conditioning system should be run briefly
at least once each week with a cold setting to
prevent the seals from drying out with subsequent
refrigerant leaks.
When the engine and vehicle interior are cold the
fan speed may be low until the engine has warmed
up, this avoids excessively cold air being blown
into the cabin.

JAGUARS-TYPEClimate Control
68Heated wiper park or (where optionally fitted)
heated front screen.
With the engine running, due to the high current
draw, press to switch on the heated wiper park to
defrost the wiper park area, or where fitted, press
to switch on the heated front screen for rapid
defrost/demist.
Heated wiper park automatically operates in cold
weather, and may stay on continuously. It is
automatically switched on when ÔDEFROSTÕ is
selected. If manually selected, the heated wiper
park will automatically switch off after 10
minutes.
Heated front screen is automatically switched on
when ÔDEFROSTÕ is selected. It will automatically
switch off after 4 minutes. The heaters will switch
off, or not operate, if low battery voltage is
detected.
Heated Rear Screen
With the engine running due to the high current
draw, press to switch on the heated rear screen
for rapid defrost/demist. The rear screen heater
will be automatically switched off after 10
minutes.
In cold conditions, the heated rear screen
operates automatically. Selecting ÔDEFROSTÕ will
also turn the heated rear screen ON. The heaters
will switch off, or not operate, if low battery
voltage is detected.
Air Distribution
Air distribution is automatically controlled when
ÔAUTOÕ is selected. Manual control can be
achieved using the air distribution buttons.
Heat at Rest Feature (V8 engine vehicles
only)
Interior heating may be continued after the
engine has been switched off by turning the
ignition to position ÔIIÕ. The climate control system
will continue to provide heat to the vehicle
interior until the engine cools down. Excessive use
will cause a low battery voltage, which may
prevent the vehicle from being started.
Voice Activated Control
Some functions of the climate control system can
be operated with the Voice Activation System
(when fitted).
A full operating description is given in the Voice
Activation Handbook included with the vehicle
literature pack.

JAGUARS-TYPEElectrical/Electronic
70

BATTERY AND FUSE BOX POWER DISTRIBUTION
1. Front power distribution box (fusebox)
2. Primary junction box (fusebox)
3. Power stud
4. Battery Positive cable
5. Rear power distribution box (fusebox)
6. Battery Negative cable
7. Battery8. Clean power fuse (Megafuse)
9. Clean power feed
10. Secondary junction box.
11. Starter motor
12. Alternator/starter positive cable
13. Alternator
Power Distribution Cables
Heavy duty power distribution cables connect the
battery to the body and to the engine starter and
the vehicle fuse boxes. The distribution cable from
the clean power fuse to the front fusebox is
routed on the LH side of the vehicle and along
part of the main body wiring harness.
Harnesses
The vehicle harnesses plug directly into
components or component flying leads using
locking connectors. The main harness layout is
shown in the illustration on the following page.
12
10
4
1113
3
9
8
65
7
12

JAGUARS-TYPE
J.418.426
Electrical/Electronic
71 HARNESS LAYOUT
Main Body Harness
Front Harness
Roof Harness
Engine Management
Harness
Instrument Pack/Fascia
Harness