1998 JAGUAR X308 steering wheel

8. Conne
ct key interlock solenoid harness multiplug.

9. Connect key t
ransponder exciter
coil multiplug and using new
tie straps, secure mu ltiplug to harness.

10 . Conne
ct wiper/washer switch mu
ltiplug, and fit multiplug onto
retaining bracket.
11. Fit driver side underscu ttle. Refer to 76.46.11.
12. Fit steering column uppe r cowl. Refer to 76.46.02.
13. Fit steering column lower cowl. Refer to 76.46.03
14. Fit steering wheel.
15. Fit driver airbag module. Refer to 76.73.39.

16. Fit groun
d cable to battery te
rminal and fit battery cover.
Refer to 86.15.15.

Supplemental Restraint System - Air Bag Supplemental Restraint System
(SRS)
Description and Operation
Supplementary Restraint Air Bag System

Airbag/SRS units provided for driver and fro nt seat passemger protection, are installed in the center of the steering wheel,
the passenger side fascia and the oute r wing of each front seat. A single point sensing unit (SPS) mounted on the
transmission tunnel, below the ra dio, provides fully electronic impact sensing, control and diagnostics for the front airbags
Deployment of each side airbag is initia ted by a side impact sensing module (SISM) installed in the adjacent 'B' post. Each
SISM senses and electronically processes a crash pulse and if this exceeds the 'must fire' threshold, transmits a fire signal
to the SPS unit. The SPS unit monitors wh ole vehicle motion and on confirmation of a crash condition, transmits a firing
current pulse to the appropriate airbags. In the event of a side only impact, the SPS will send a current pulse to the airbag
on the struck only. Neither th e non-struck side airbag nor the frontal restraint system will be deployed under these
conditions. The airbag system can only be activated wh en the ignition switch is in position II or III.
Side Air Bags

Supplemental Restraint System - Driver Air Bag Module
Removal and Installation
Removal
• WARNINGS:
FOLLOWING DISCONNECTION OF THE BATTERY, A PERIOD OF AT LEAST ONE MINUTE MUST BE ALLOWED TO ELAPSE
BEFORE ANY WORK IS CARRIED OUT ON AN AIR BAG MODULE.
FOLLOWING TEN YEARS IN SERVICE, AN AIR BAG MO DULE MUST BE REMOVED AND DISPOSED OF IN THE
APPROVED MANNER, AND A NEW AIR BAG MUST BE FITTED.
AIR BAGS CONTAIN A CHEMICAL IRRITANT. IF AN AIR BAG IS RENEWED, THE ORIGINAL UNIT MUST BE DISPOSED
OF IN ACCORDANCE WITH CURRENT SAFETY PROCEDURES.
IN THE EVENT OF A FAULT RUPTURING THE 10A BATTERY SUPPLY FUSE (F4 LOCATED IN THE FUSE-BOX AT THE
DRIVER'S END OF THE FASCIA), THE FUSE MUST NOT BE RENEWED UNTIL THE AIRBAG/SRS SYSTEM HAS BEEN DE-
ACTIVATED. FUSES OF ANY OTHER VALUE MUST NEVER BE USED, AS THIS CAN CAUSE DISARM FAILURE.
Installation
1. Remove battery cover and disc onnect ground cable from
battery terminal. Refer to 86.15.19.

2. Remove air bag module securing bolts.
1. Turn steering wheel 90 degrees to the left to
provide access to module LH securing bolt.
2. Fully slacken captive securing bolt
Turn steering whee l 180 degrees to the right to provide
access to module RH securing bolt.
Fully slacken captive securing bolt.

3. Remove air bag module from steering wheel.
1. Carefully withdraw airbag module from steering wheel
and position for access.
2. Release air bag harness mu ltiplug from retaining clip
and disconnect multiplug.
1. Position air bag module and connect harness multiplug.
2. Fit multiplug onto retaining clip.
3. Carefully install airbag mo dule in steering wheel.
4. Turn steering wheel 90 degrees to right an d partially tighten
module RH securing bolt.

5.
Turn steering wheel 90 degrees to left and partially tighten
module LH securing bolt.
6. Repeat steps 3 and 4 to fully ti ghten securing bolts and return
steering wheel to central position.
7. Fit ground cable to battery terminal. Refer to 86.15.15.

The body is pre-treated to ensure high resistance to corrosion and stone chip dama ge. Prior to the first major pre-treatment process, the body shell is high-pressure washed to remove any metal dust and residual oil.
The first major pre-treatment process consists of phosphate and electro-paint deposition, which together with zinc coating,
forms the basis of the corrosion protection. This process includes high pressure knock-off, alkali de-greasing, zinc phosphate
conversion of body steel (dissolving iron and coating with zinc phosphate crystals), trivalent chrome rinsing and
demineralized water rinsing, seal ing all chemicals and impurities.
Both dip and spray techniques are employed and the bodies are submerged to the waistline during the first and third rinses
of the main phosphate clean. Chemical strengths and soluti on temperatures are continuously monitored and accurately
controlled throughout the process.
An 80% water primer is then cathodic elec tro-deposition applied to the thoroughly cleansed bodies in a uniform 'sag-free'
film 18 to 32 micron thick. Optimum durabi lity of the electroprimer is achieved by finally curing in a stoving oven at 165 °C
for a period of 20 minutes.
All underbody seams of the fully primed bo dies are then manually sealed, to prevent water and dust ingress into the vehicle
and to enhance corrosion protection.
An 800 to 1000 g/m2 PVC coating is semi-automatic airless sp ray applied to the underside of the main floor panels, trunk
floor and rear wheel arches (ref. illustration above).
The upper panels of primed and external ly sealed bodyshells are next lightly scuffed to remove imperfections and a PVC
coating is applied to all internal seams by an airless spray technique. A PVC bead seal is also applied to the doors, hood and
trunk clinch joints.
Following anti-corrosion, sealing and primin g treatment, the bodies enter the first stage of 'cosmetic' painting. This consists
of the application of two coats of a highly chip resistant po lyester surfacer, employing high voltage electrostatic 'spinning
bells', to achieve a final film thickness of 35 to 50 micron. Between surfacer coats, a polyurethane coat is automatically
applied to the sills to impart even greater resistance to stone chipping.
All interior panels are then painted us ing a color keyed sealer, wet-on-wet wi th a surfacer material, after which the
bodyshells are stoved at 160 °C for a period of 20 minutes. Further protection agai nst corrosion is provided by a medium
solids black pigmented wax which is airless spray applied to vehicle undersides.
Wax Injected Box Sections
Critical body box-sections are si milarly protected by spray injecting a high solids wax. This is then re-flowed at 70 to 90 °C
to achieve optimum seam/joint penetratio n and form a resilient and durable internal coating (ref. illustration above).
After full wet sanding, rinsing and drying to provide a good su bstrate, a color-keyed semi-matt sealer co at is applied using
electrostatic bells to achieve a film build of 25 to 35 micron . The bodies are then stoved for a further 20 minutes at a
temperature of 145 °C and subjected to a local 'seek-and-find' de -nib operation prior to the final two coat process. The final
top coat finish is achieved by using poly ester base coat colors and an acrylic sag resistant clear coat. This clear over base
(COB) process produces a high gloss, durabl e paint finish with a film thickness of 50 to 65 micron, which is finally cured at a
temperature of 135°C for 20 minutes.
The Munsell three dimensional system of color management is em ployed to achieve highly accurate control of vehicle colors.
This system ensures that paint pigmentations are accurately maintained and facilitates vigorous final checking of finished
vehicles for color match. The hu e of individual panels such as trunk lids, doors and hoods is in some instances adjusted to
offset the effects of differing light angles. Where applicable, coachlines are manually applied and radiant heat cured on the
completed and valeted vehicle prior to hand spray applic ation of a protective wax coat.
Introduction
All repairs, whether structural or cosmetic must return the vehicle to the original manufactured condition with regard to
occupant safety, dimensional accuracy, fi nish and corrosion protection, and ensure continuation of the Paint Surface and
Corrosion warranty where applicable.
Similarly, repaired vehicles must be fu lly checked, and where appropriate reset, with regard to steering, suspension,
braking, and occupant restraint systems.

1. Sever and discard tiestraps securing front wheel
speed sensor harness to upper wishbone.
2. Disconnect harness connector from sensor.
Repeat procedure to disconnect opposite side wheel speed
sensor harness.

16. CAUTION: Do not suspend caliper from brake hose as
this will damage the hose.
Remove brake calipers from carriers.
1. Remove caliper spring clip.
2. Remove guide pin dust caps.
3. Slacken and withdraw guide pins.
4. Remove caliper from carrier and tie to suspension mounting bracket.
Repeat procedure to remove opposite side front brake
caliper.

17. Remove filler cap from power steering fluid reservoir.

18. Disconnect steering rack transducer harness front connector.
Release harness connector from body retaining clip.
Disconnect connector.
19. Sever and discard tiestrap secu ring return pipe, harness (RHD
only) and rubber support to steering rack.

30. Connect steering harness.
Route harness connector to body front location.
Connect steering ha rness connector.
Install connector in body retaining clip.

31. Connect wheel speed sensor harness.
1. Connect wheel speed sensor harness to sensor.
2. Using new tiestraps secure wheel speed sensor harness to upper wishbone.
Repeat procedure to connect opposite side wheel speed
sensor.

32. Install brake calipers.
1. Install caliper on carrier.
2. Install guide pins.
3. Install guide pin dust caps.
4. Install caliper spring clip.
Repeat procedure to install opposite side front brake
caliper.
33. Install both front road sp rings. Refer to 60. 20.02.
34. Using screws or new scrivets , secure undertray to front
bumper cover.

41. Ensuring graduation mark remains aligned, finally tighten
wishbone front eccentric bolt to 113-153Nm.
42. Install air intake tube/meter/ cleaner cover assembly. Refer
to 19.10.30

43. Install both engine co vers (normally aspirated vehicles only).
Position covers over engine.
Install securing pegs.
44. Fill power steering system. Refer to Section 211-02.
45. Remove fender covers and close hood.
46. Connect ground cable to batt ery terminal and fit battery
cover. Refer 86.15.19.
47. Carry out steering geometry an d wheel alignment checks and
adjust as necessary. Refer to 57.65.03