1994 JAGUAR XJ6 airbag

i Introduction
GLOSSARY OF TERMS
0 [if applicable)
ss
Term(s) term(s) (or Eng-
lish Equivalent)
part of the shift mechanism of a manual selectorfork
transmission, mounted on the shift rail, and
relaying movement in the shift lever to the
sleeve coupling which moves gears in and
out of engagement
rail which carries the shift fork
controls shifting in an automatic
transmission
part engine, usually the cylinder block, short engine
crankshaft
I connecting rod I piston
assemblv. suDDlied as a reconditioned unit selector
rod
shift
fork
an undesirable connection between a
(usually electrical) circuit and any other point
in
-line engine which is mounted in the
vehicle at an angle from the perpendicular, as
AJ6
shift rail
shift
solenoid
inclined engine
short
block
SRCM
SIG RTN
short circuit
sun roof
sun roof control
module
slant engine
buffer block, usually of a rubber compound,
which fits between the axle and the body unit,
and absorbs any excess travel
device consisting of an electrical coil which,
when energized, produces a magnetic field
in
a plunger which is pulled to a central
position. A solenoid may be used as an
actuator
in a valve or switch
SAE
sliding roof
sliding roof control module
ci rcl
ip
bump stop
signal return
sc
snap ring
ing brake
brake lamp
sulphur,
-ic
an intake system which utilizes a
snubber
SCB
SRS
Society of Automotive Engineers
solenoid
supercharger (mechanically driven device
that pressurizes intake air, thereby increasing
density of charge air and the consequent
power output from a given displacement)
airbag restraint system for driver and front
splash
guard
speed
Speed Control Control Module
square centimeters
stabilizer bar
standard
station wagon
stop lamp
sulfur, sulfuric
supercharger
- - __. . . . ... - . Supercharger Bypass
Supplementary Restraint System Abbreviation
I Definition 1 Previously used
I mud flap
I the
magnitude of velocity (regardless of I I direction)
SCCM
I Module controlling Speed Control System I Cruise Control
cm2
std
1 seat passenger
SP I supply port of valve I
0
0
0
Issue 1 August 1994 24 X300 VSM

SECTION CONTENTS 0
Sub-Section Title SRO Page
i to iii ............ Preliminary Pages ................................................................ i To iv
10.1
............. Steering System Description ........................................................... 1
10.1.1 ............ Steering System Description. Steering Column Major Components ........................... 1
10.1 .2 ............ Steering System Description. Steering Column Operating Principle ........................... 1
10.1.3 ............ Steering System Description. Hydraulic System Major Components .......................... 2
10.1.4
............ Steering System Description. Hydraulic System Features .................................... 2
10.1.5
............ Steering System Description. Hydraulic System Operating Principle .......................... 2
10.2 ............. Service Procedures-Safety Related ...................................................... 5
10.2.1
............ Service ProceduresSafety Related. Airbag ............................................... 5
10.3
............. Service Procedures ................................................................... 5
10.3.1
............ Service Procedures Working Practices ................................................... 5
10.3.2
............ Service Procedures Working Practices. Fluid Level Check & Topup .......................... 5
10.3.3
............ Service Procedures Working Practices. System Bleed ...................................... 5
10.3.4
............ Service Procedures Working Practices. Fluid Reservoir ..................................... 5
10.3.5.
........... Service Procedures Working Practices. Hydraulic Connections .............................. 5
10.4
............. Diagnostic Procedure ................................................................. 6
10.4.1 ............ Diagnostic Procedure. introduction ..................................................... 6
10.4.2. ........... Diagnostic Procedure. Preliminary Action ................................................ 6
10.4.3 ............ Diagnostic Chart 1 ................................................................... 6
10.4.4. ........... Diagnostic Chart 2 ................................................................... 7
10.4.5 ............ Diagnostic Chart3 ................................................................... 8
10.5
............. Outer Track Rod Ball Joint. Renew ................................ 57.55.02 ............. 9
10.6 ............. Front Hub Assembly, Renew ..................................... 60.25.01 ............. 9
10.7
............. Front Hub Bearing End Float. Check & Adjust ...................... 60.25.12 ............. 9
10.8
............. Front Hub Bearing. Renew ...................................... 60.25.16 ............. 9
10.9
............. Front Hub Oil Seal. Renew ...................................... 60.25.17 ............. 9
X300 VSM i Issue 1 August 1994

10.1 STEERING SYSTEM DESCRIPTION
10.1.1 Steering Column Major Components
Integrated column assembly incorporating power, or manual, reach /tilt mechanism and lock.
Ignition switch.
Ignition interlock solenoid.
Key transponder coil.
Body attachment points.
Depending upon model, the steering column may be adjusted for
tilt and reach, either by electrical or manual means.
Power variants may be either automatically or manually adjusted and all types have the entry / exit feature.
10.1.2 Steering Column Operating Principle
Power Adjust: Two independent motor / gearbox assemblies provide infinite adjustment for reach and height within
approximate ranges of 35mm and
13O respectively. Adjustments may be automatically made in conjunction with the
seat memory facility or manually when the adjustment switch is used. It should be noted that selection of 'Off will
disable the automatic entry / exit mode.
Manual Adjust: The cable operated reach adjustment is infinite within a range of 35mm, with the desired position being
fixed
by a rack and wedge. Tilt variations are stepped at approximately 3O intervals with 6 positions being available,
the uppermost being unlatched.
From the uppermost position the column may be pulled down to engage the first detent without using the
tilt lever.
WARNING: MANUAL ADJUST ONLY: TO AVOID PERSONAL INJURY, COLUMN UPWARD TRAVEL SHOULD BE MAN- UALLY RESTRAINED TO CHECK UPWARD SPRING ASSISTANCE. THIS IS ESPECIALLY IMPORTANT IF
THE STEERING WHEEL HAS BEEN REMOVED FOR MAINTENANCE REASONS.
WARNING: ALL TYPES; DO NOT REMOVE THE STEERING COLUMN FROM THE VEHICLE WITH THE STEERING
WHEEL ATTACHED UNLESS THE STEERING
IS CENTERED AND THE COLUMN LOCK IS ENGAGED. IFTHE
SERVE THIS MAY RESULT IN AN INOPERATIVE AIRBAG SYSTEM. SEE LABEL ON STEERING WHEEL
HUB. LOCK IS TO BE RENEWED, 'LOCK-WIRE THE ASSEMBLY TO PREVENT ROTATION. FAILURE TO OB-
0
X300 VSM 1 Issue 1 August 1994
J57-27L
3 Ignition switch 1 1 Tilt motor 2 Tilt motor flexible coupling 4 Reach motor
Fig.
1 Major components Power operated steering column

10.2 SERVICE
PROCEDURES - SAFETY RELATED
10.2.1
Airbag
The electrically activated driver's side airbag is attached to the steering wheel hub and is fed by two wires from the
column stalk assembly. Electrical input to the column stalk assembly for the airbag is provided by a dedicated harness
which is encased in a yellow sleeve. A mechanism in the stalk assembly called the 'cable reel cassette' provides conti
-
nuity from the static column to the steering wheel. The 'cable reel cassette' is driven by a tang which locates in the
steering wheel. Because the connection is by wires, and the cassette assembly is only capable of approximately five
(5) full turns,
it is critically important that initial positioning is correct, see Section 15. It is equally important that fitting of the steering wheel, connection of the column, lower shaft and steering rackshould
ONLY be made with the steering rack in the center of its travel.
WARNING: DO NOT REMOVE THE STEERING COLUMN FROM THE VEHICLE WITH THE STEERING WHEEL AT- TACHED UNLESS THE STEERING IS CENTERED AND THE COLUMN LOCK IS ENGAGED. IF THE LOCK
BARREL
IS TO BE RENEWED, 'LOCK-WIRE THE ASSEMBLY TO PREVENT ROTATION. FAILURE TO OB- SERVE THIS AND CONSEQUENT DAMAGE TO THE 'CABLE REEL CASSETTE MAY RESULT IN AN INOP- ERATIVE AIRBAG SYSTEM. SEE LABEL ON STEERING WHEEL HUB.
10.3 SERVICE PROCEDURES
10.3.1 Working Practices
It is not recommended that either the steering rack or engine driven pump assemblies are repaired in any way other
than in accordance with the repair procedures described in this manual. The fluid reservoir and filter is a disposable
assembly and no attempt should be made to clean it internally. Genuine replacement units must be fitted following
routine service or diagnostic confirmation of the failure of any component.
The importance of cleanliness cannot be over
-stressed, not only with new parts but also those which may havefailed.
In-service contamination of the hydraulic system is a major cause of failures and may be avoided with good working
practices and care. All new units and pipes must be supplied with suitable blanks in every orifice. Should a unit not
have blanks fitted, do not use
it - return it to the supplier with an appropriate reason for your action.
To help the manufacturer diagnose problems and avoid post-removal contamination; provide full details of the fault
and plug all connections as soon as they are released. All suspect units must be returned to Jaguar Cars complete
with relevant documentation.
CAUTION: It is imperative that the power steering system does not become contaminated in any way. Always de- cant fluid from afresh sealed container and clean the area around the reservoir neck both before and after topping-up. Never return drained fluid to the system.
10.3.2
Position the vehicle on a level surface with the engine sta- tionary and fluid cold. Add fluid, if required, so that the level
falls BETWEEN the marks
Fig.1.
10.3.3 System Bleed (following maintenance)
To avoid fluid aeration and possible pump damage, the in- itial fill process must be carried out with the ignition OFF.
Set the fluid level approximately 20 mm above the upper
dipstick level, and cycle the steering no less than three (3) times from lock to lock (this may be best achieved with the
front wheels off the ground). As air is expelled thefluid level
will fall, the level should be corrected. Start the engine and
further cycle thesteering until the fluid level becomes stable.
Stop the engine and finally set the level in accordance
with the fluid level check procedure.
10.3.4 Fluid Reservoir
The reservoir has an integral, non-serviceable, return-side
filter. Should any component be renewed or the system
'broken into' for any reason,
it is essential that the reservoir and the fluid are changed. Under normal operating condi- tions it is not necessary to change the fluid.
10.3.5 Hydraulic Connections
Fluid
Level Check and
Top-up
Jf7-281
Fig. 1
All hydraulic connections and surrounding areas should be scrupulously cleaned before and after work. Please note
that the steering rack valve block connections for FEED and RETURN are common in size. Ensure that the pipes are
correctly fitted, the uppermost one being the high pressure FEEDfrom the steering pump and the lower (RETURN) hav- ing a double depth hexagon tube nut.
X300 VSM 5 issue 1 August 1994

1. SERVICE TOOLS & EQUIPMENT
Illustration Jaguar Number Description Notes
not illustrated JD 188 Underscuttle pad securing SRO 76.46.1 1/90 and
not illustrated JD
202 Fascia center vent removal SRO 76.46.06
clip removal tool SRO 76.46.15190
tool
11. TORO U€ TIGHTEN1 NG SPEC1 FlCA TlONS
Fixing Tightening Torque (Nm) 1
Fascia I I
Instrument pack to support panel I 1.8 I
Fascia to support bracket
Fascia to console
3
Tunnel bracket to body
22 - 28
22
- 28
Bolster to tunnel bracket 1.5
Instrument pack to fascia
3.0
Strut to fascia 2.0
Fascia support strut to body 7 - 10
CPU bracket to fascia 5
-7
Fascia demister bracket to fascia
1.5
1 .o
1 .o
5-7
5
-7
Fascia
and air con. location to body
Air dist. box duct to air dist. box
Airbag carrier mounting bracket to fascia
Instrument pack support bracket to fascia
Airbag bracket to fascia
2.0
Air dist. box to fascia 2.0
Inst. pack support bracket to fascia 5-7
22 - 28 Fascia assembly to body
Airbag door brackets to fascia 5-7
4.0
4.0
Airbag door bracket to fascia and strut
Airbag door bracket to door frame assembly
Hood
Hood lock to body
Hood buffer assembly 7
-10
Gas strut - ball pin to weld nut
7 - 10
7
- 10
Hood lever 5
-7
Clamp
- hood adjust cable 6-8
Interior
Sun Visor fixings 1.8
Sunblind to parcel shelf
Sunblind bezel assembly
1 .o
Coat hook 3.0
Tighten to prevailing torque

Body Components & Trim
13.1 GENERAL DESCRIPTION
This section covers the following areas of the vehicle body:
0 Battery cover
0 Carpets - passenger compartment, trunk
0 Console - including radio, glovebox
0 Doors -frames, sealing, locks, trim, glazing
0 Fascia
0 Fuel filler flap assembly
0 Footrest
0 Hood - liners, gas strut, locking,
0 Illuminated sunvisor - inc mirror
0 Interior trim - trim pads, finishers, veneers
0 Mirrors - internal, external
0 Rear parcel tray
0 Roof console
0 Roof lining (headlining)
o Seats -front, rear -
0 Seat belts - front, rear
0 Sliding roof
0 Steering column cowl
0 Underscuttle pad
Refer to Appendix
A4 - Body Systems & Body Repair for information relating to crash-damage repairs and to the fol- lowing external components: exterior trim, bumpers, windscreen and rear screen, closures and sealing.
Refer to Section 15, Electrical for details of the following motors and solenoids: driver's and interior mirrors, window
lift, sunroof, seat / headrest and locking mechanisms (doors, trunk and filler cap).
Refer to Section 15, Electrical and Electrical Diagnostic Manual (EDM) for details of the passenger and driver airbags.
X300 VSM 1 Issue 1 August 1994

Body Components & Trim ~
issue 1 August 1994 X300 VSM 21
13.3.17 Fascia Board, Renew
SRO 76.46.01
. Remove
the battery cover and disconnect the battery.
Remove the drivers side and passenger side underscuttle
pads, see sub
-sections 13.3.19 and 13.3.20.
. Remove the drivers airbag module, see section 15.5.
Remove the steering wheel, section 10.
Remove the drivers side and passenger side fascia closing
. Remove the fascia center veneer panel, see subsection
Remove the fascia board for access, see subsection
. Disconnect the air conditioning differential potentiometer
Remove the differential potentiometer assembly.
. Displace and reposition the through panel connectors
from the fascia assembly.
. Displace the fascia vent motor / gearbox assemblies har- ness multi-plug from the mounting bracket.
. Disconnect and reposition the fascia harness to console
harness
multi-plug from the mounting bracket.
. Disconnect the BPU harness multi-plugs.
Remove the tiestraps securing the harness to the fascia.
. Reposition the fascia on a bench.
= Displace and reposition the solar sensor assembly from
Disconnect the solar sensor harness multi-plug.
Remove the solar sensor assembly.
= Undo and remove the defrost vents securing screws.
Displace and reposition the defrost vent assemblies.
. Disconnect the tweeter speaker harness multi-plugs.
. Remove the defrost vent assemblies.
. Displace the fascia harness grommet from the fascia.
. Route the harness through the aperture.
Remove the fascia harness assembly.
. Undo and remove passenger airbag deployment door to
fascia securing bolts ( one bolt is removed with the fascia).
. Displace and remove the deployment door assembly.
. Undo and remove the passenger airbag module to fascia
. Displace and remove the airbag module assembly.
. Undo and remove the airbag module I BPU mounting
bracket assembly to fascia securing nuts 1 bolts.
= Displace and remove the mounting bracket assembly.
. Retrieve the spacing washers.
. Displace and remove the side vent outlets from the fascia.
. Displace and remove the side vent ducts securing clips.
. Displace and remove the side vent ducts.
. Undo and remove the center vent flap assembly to fascia
. Displace and remove the center vent flap assembly.
Undo and remove fascia location bracket securing nuts.
Displace and remove the location bracket.
panels, see
sub
-sections 13.3.22 and 13.3.21.
13.3.23. 13.3.17.
harness multi
-plug.
the fascia.
securing bolts.
securing nuts.

Body Components & Trim -
. Undo and remove the defrost vents clip location bracket
9 Displace and remove the clip location brackets.
Remove the defrost vent spire clips from the fascia.
Place the fascia aside.
. Place a new fascia on the bench.
. Fit and fully seat the defrost vent spire clips.
. Fit and align the defrost vent clip location brackets.
Fit and tighten the location brackets securing screws.
. Fit and align the fascia location brackets to the fascia.
. Fit and align the location bracket securing nuts.
. Fit and align the center vent flap assembly.
. Fit and tighten the flap assembly securing nuts.
. Fit and align the side vent ducts to the fascia assembly.
. Fit and fully seat the side vent ducts securing clips.
Fit and fully seat the side vent outlets to the fascia.
Fit and align the airbag module/BPU mounting bracket as-
. Fit and tighten the airbag module/ BPU mounting bracket
. Fit and align the airbag module to the fascia.
. Fit and tighten the airbag module securing bolts.
. Fit and align the airbag deployment door assembly to the
. Fit but do not fully tighten the door securing bolts.
. Align the door assembly to the fascia.
. Finally tighten the door securing bolts.
. Position the harness. Route the harness speaker / solar
sensor multi-plugs through the aperture in the fascia.
. Fully seat the harness grommet to the fascia aperture.
. Route the tweeter speaker harnesses along the defrost
vent aperture.
. Place the defrost vent assemblies to the fascia.
. Connect the speaker harness multi-plugs to the speakers.
Reposition and fit the vent assemblies to the fascia.
. Fit and tighten the vent securing screws.
Place the solar sensor assembly to the fascia.
. Reconnect the solar sensor harness multi-plug.
. Fully seat the solar sensor assembly to the fascia.
. Reposition the fascia assembly on the bench.
. Secure the harness to the fascia assembly using tiestraps.
. Reconnect the BPU harness multi-plugs.
. Reposition and fit the fascia harness to console harness
. Reconnect the fascia vent motor/gearboxassemblies har-
securing screws.
sembly and align the spacers.
securing nuts
/ bolts.
fascia.
multi
-plug to the mounting bracket.
ness
multi-plug.
X300 VSM Issue 1 August 1994 22