1994 JAGUAR XJ6 ESP

12.1.9
The TMC primary circuit (item 1) applies brake pressure to the front brakes. Individual control of the front wheels is
provided by solenoid valves, Valves (items
15 and 18) control the front left brake circuit (item 21). Valves (items 16and 19) control the front right brake circuit (item 22). The TMC secondary circuit (item 2) applies brake pressure to the rear
brake circuit (item 20) via valves (items 14 and 17), on a 'select low' principle.
Hydraulic Operation - A BS CM
8
I I + I
I t 1
'0281
1. TMC 1 (primary circuit) 9. Low pressure accumulator 17. Outlet valve NC 2. TMC 2 (secondary circuit 10. Electric pump motor 18. Outlet valve NC
3. Tandem master cylinder 11. Two circuit hydraulic pump 19. Outlet valve NC 4. Vacuum booster 12. Damping chamber 20. Rear brake circuit 5. Central valve 13. Valve block 21. Front brake circuit (left)
6. Fluid reservoir 14. Inlet valve NO 22. Front brake circuit (right) 7. Fluid level indicator 15. Inlet valve NO 8. Pump motor unit 16. Inlet valve NO
Fig.
1
Should the ABS be initiated by a locking tendency of any wheel during braking, the pump unit (item 8) is started and
the appropriate NO inlet valve (item 14, 15 or 16) closes in response to signals from the control module. This action
prevents further increase of brake pressure by blocking the supply of brake fluid from the TMC (item 3). If excessive
deceleration continues, the appropriate NC outlet valves (item 17,18 or 19) opens, releasing brake pressure to the low
pressure accumulators (item 9) until the wheel accelerates again.
Issue 1 August 1994 12 X300 VSM

12.1.1 0 Hydrauric Operation - ABS 1 TC CM
ABS/TC CM hydraulic modules incorporate inlet valves (items 16 and 17) and outlet valves (items 20 and 21) for each
driven wheel. This enables individual pressure modulation to the rear brakes under wheel spin conditions, i.e. traction
control.
Increased wheel spin of
a driven wheel under acceleration causes the NO isolation valve (item 14) to be closed and the
pump (item 10) to be switched on. This in response to signals from the control module.
Closing of the isolation valve blocks delivery of the pump to the secondary circuit (item
2) of the TMC. The pump now
draws fluid from the reservoir via the open hydraulically operated inlet valve (item 13). Increased pressure is now avail-
able at the inlet valves (items 16 and 17) for actuating the rear brakes, thus decreasing the tendency of wheel spin.
The hydraulic inlet valve (item
13) switches when traction control is initiated to change the suction connection
of the pump from the accumulators (item 9) to the fluid reservoir (item 6) via the TMC.
1. TMC 1 (primary circuit)
8
I 1-
I
10. Electric DumD motor 19. Inlet valve NO
170 280
2. TMC 2 (secondary circuit) 11. Two-cirh hydraulic pump 20. Outlet valve NC
3. Tandem master cylinder 12. Damping chamber 21. Outlet valve NC
4. Vacuum booster 13. Hydraulic inlet valve 22. Outlet valve NC
5. Central valve 14. Isolation valve NO 23. Outlet valve NC
6. Fluid reservoir 15. Relief valve 7. Fluid level indicator 16. Inlet valve NO 8. Motor pump unit 17. Inlet valve NO 9. Low pressure accumulator 18. Inlet valve NO
Fig.
1 24.
Rear
brake circuit (left) 25. Rear brake circuit (right) 26. Front brake circuit (left) 27. Front brake circuit (right) ~
Issue 1 August 1994 14 X300 VSM

Brakes
The pressure at the inlet valves corresponds to the opening pressure of the relief valve (item 15) incorporated in the
isolation valve. Excess brake fluid is drained to the suction side of the pump via the relief valve and returns either to
the TMC secondary circuit and on to the
fluid reservoir, or is directly drawn on by the pump.
As soon as the spinning wheel has been braked down into the normal range of wheel spin, the NO valves (items
16 or 17) close to prevent any further increase in brake pressure. Depending upon the acceleration of the wheel, the NC
valve (item
20 or 21) may open to decrease thesecondary circuit brake pressure. NCvalves (item 17 or 18) may remain
closed in orderto achieve a brake pressure holding phase. If the pressure in the secondarycircuit needs to be increased
again, the NC valve closes again (if open) and the NO valve opens, diverting the necessary volume flow. This control
action, keeps the wheel in the range of optimum slip until the spinning tendency ceases.
The NO isolation valve
(14) remains closed throughout the traction control cycle.
An actuation of the brake, sensed by the control module, causes the traction control mode to be terminated and the
isolation valve (item
14) to be opened. The TMC pressure simultaneously closes the hydraulic inlet valve (item 13) so that the pump can no longer draw fluid from it. The ABS / TC CM now operates in normal ABS mode.
m: When traction control is initiated, speed control is deactivated (if in operation) and requires re-setting after
the traction control mode has terminated. Gear shift is inhibited on automatic transmission vehicles; no down- shifts are allowed and upshifts occur at 4800 RPM.
X300 VSM 15 Issue 1 August 1994

Body Components & Trim d-!P
13.3.15 Cupholder, Renew
SRO 76.25.22
. Remove the cupholder trim panel, see sub-section 13.3.1 4.
. Displace and reposition the cupholder assembly from
base (cupholder remains captive by spring).
. Using a suitable hook, disconnectthespringfromthe base
and remove the cupholder.
. Disconnect the return spring from the cupholder.
. Place the cupholder aside.
9 Place the new cupholder to the front.
. Connect the return spring to the cupholder.
. Place the cupholder into position.
. Using a suitable hooktool, connect the return spring to the
. Reposition and fit the cupholder assembly to the base.
. Refit the cupholder trim panel.
base.
13.3.16
Cupholder Latch, Renew
SRO 76.25.23
. Remove the console glove box lid, see sub-section
Undo and remove the inner lid securing screws.
Displace and remove the inner lid.
. Open the cupholder.
. Undo and remove the cupholder latch securing screw.
. Displace and remove the latch assembly.
. Fit and align the new latch assembly to the lid.
. Fit and tighten the latch securing screw.
. Fit and align the lid inner to the lid.
. Fit and tighten the inner lid securing screws.
. Close the cupholder.
. Refit the the console glove box lid.
13.3.12.
issue 1 August 1994 20 X300 VSM

Body Components & Trim a
13.7.4
Localized stains caused by accidental spillage may be one of three types:
0 Water based stainscaused byfoodstuffs,starches, sugars, soft drinks,fruit stains, washable inketc. These stains
adhere readily to the pile and do not respond to vacuum cleaning. They are best removed immediately using
the procedure detailed below.
0 Oil /grease based stains caused by spillage or other contamination by butter, grease, hand cream, ball point pen
ink, crayon, lipstick etc.
0 A combination of both these types.
Spot Cleaning - Localized Stains
To remove water based stains:
. Blot up liquids and /or scrape off semi-solids using a spatula.
. Sponge the affected area with clean luke-warm water. Use a clean, damp, undyed, cotton cloth to absorb as much
. If the stain persists, apply a suitable carpet shampoo solution made up to the manufacturers instructions, again work-
= Rinse with clean, warm water, taking care not to over-wet the carpet.
Absorb excess moisture by laying dry, undyed cloths or white paper towels over the moist carpet under light pres-
. When the carpet is thoroughly dry, vacuum clean the area to lift the carpet pile.
CAUTION: When liquids are applied to the pile, use only a clean cloth or sponge. Do not apply liquids directly to the
carpet - when attempting to remove stains, blot the pile as heavy rubbing can destroy the yarn structure of the carpet.
of the moisture as possible, working from the edge to the centre of the stain.
ing from the edge to the centre of the stain.
sure; replace when necessary.
To remove oil /grease based stains:
. Using a suitable aerosol containing solvent loaded with absorbent powder, spray the affected areas of the carpet.
= Allow the solvent to evaporate and remove the powder containing the grease by using a vacuum cleaner or brush.
m:
CAUTION: Solvents must only be used in well-ventilated areas where naked lights and smoking are prohibited.
The solvent loosens the grease from the fibre and the powder then absorbs the grease-carrying solvent.
Neat solvent, eg dry cleaning
fluid, may be used, but should be used sparingly from a clean white cloth.
To remove stains which are a combination of oil and water based contamination (usually resulting from food or drink):
. Treat combination stains as for water based stains.
. Allow to dry out.
. Treat as for grease based stains.
Issue 1 August 1994 46 X300 VSM

Body Components & Trim
la 'Fi brefresh'
Ib '1001 Foam Shampoo'
Ic 'Novatreat'
13.7.5 Carpet Cleaning and Stain Removal Materials
The carpet cleaning and stain removal materials listed in the table below must be used according to manufacturer's
instructions.
Servicemaster
308
Melton Road, Leicester LE4 7SL
(Tel. 0533 6107610)
P C Products
Swinton, Manchester
(Tel. 061 792 61
11)
British Nova Works
57
/ 61 Lea Road, Southall, Middx
(Tel. 081 574 6531)
Trichloroethane - 'Genklene'
'Spot Remover' ~
ICI
R.P.M. Marketing
(Sussex)
11 Chaucer Industrial Estate
Dittons Road, Polegate, East Sussex BN26 6JF
(Tel. 0424 21 1427)
13.7.6 Repair of Damaged Carpet
The most common cause of accidental damage to carpets is cigarette burns (especially to polypropylene carpet).
These can be repaired easily on new carpets by cutting out the face material in the affected area and replacing with new face material with a latex locking coat of approximately 100g/m2 dry then incorporating a P.S.A.B. (pressure sensi- tive adhesive backing) which would be applied to roll carpet in the form of a laminate film at Firth Furnishings subsidi- ary Textile Bonding, Higham Ferrers, Northampton, UK.
The
film has a peelable release paper, which means that the new material would simply be cut to size, the release paper
removed and then the new carpet pressed into position.
The problem
in replacing areas in old or soiled carpets is that the replacement of damaged areas with new carpet would
create a visual difference, ie un-worn pile, clean appearance, which would then cause the repaired area to stand out
from the rest of the carpet. The only answer would be to abrade the rest of the new carpet to the same degree as the
old carpet.
3a
UK
3b Continental Europe
3c UK
3d Continental Europe
X300 VSM 47 Issue 1 August 1994
SEBO (UK) Ltd.
Baker Street, High Wycombe,
HPll 2RX
(Tel. 0494 534801)
Stain
& Co. GmbH
Wulfrather Strasse 49 - 49,
D
-5620 Velbert
Germany
HOST
(UK)
Unit 1, Ranch House,
Normanton Lane, Bottesford, Nottingham NG 13
OEL (Tel. 0949 43372)
Mr Alex de Roeper
Sanfresh BV
Dotterbloemstraat 1,
3053 JV Rotterdam, Holland
(Tel. 31
10 422 5455)

Climate Control Systems
14.1 WORKING PRACTICES
14.1.1 General
o Be aware of, and comply with all health and safety requirements, whether they be legislative or common sense.
This applies to conditions set both for the operator and workshop.
o Before commencing any repair or service procedure, disconnect the vehicle battery ground connection and
protect the vehicle where appropriate, from dirt or damage.
0 Work in a well ventilated, clean and tidy area (Fig. 1).
0 Keep all components and tools clean.
0 Recovery / Recycle and Recharge equipment must comply with, or exceed the standard detailed in the
preliminary pages.
Fig.
1
14.1.2 Handling Refrigerant
0 Wear eye protection at all times. Use gloves, keep skin that may come into contact with HFC 134A covered.
Should refrigerant come into contact with your eyes or skin; wash the affected area with cool water and seek
medical advice, do not attempt to treat yourself.
o Avoid breathing refrigerant vapour, it may cause ir- ritation to your respiratory system.
0 Never use high pressure compressed air to flush out
a system. Under certain circumstances HFC 134A +
compressed air + a source of combustion (welding
and brazing operations in the vicinity), may result in
an explosion and the release
of potentiallytoxiccom-
pounds.
0 HFC 134A and CFC 12 must never come into contact
with each other (Fig. 21, they will form an inseparable
mixture which can only be disposed of by inciner
-
ation.
0 Do not vent refrigerant directly to atmosphere, al- ways use Jaguar approved recovery equipment. Re-
member, HFC 134A is costly but recycleable.
continued
1 Issue 1 August 1994 X300 VSM

Climate Control Systems
0 Because HFC 134A is fully recycleable it may be 'cleaned' by the recovery equipment and re-used following
removal from a system.
0 Leak tests should only be carried out with an electronic analyzer which is dedicated to HFC 134A. Never use a CFC 12 analyzer or naked flame type.
0 Do not attempt to 'guess' the amount of refrigerant in a system, always recover and recharge with the correct
charge weight. In this context do not depress the charge or discharge port valves to check for the presence of
refrigerant.
14.1.3 Handling Lubricating Oil
0 Avoid breathing lubricant mist, it may cause irritation to your respiratory system.
0 Always decant fresh oil from a sealed container and do not leave oil exposed to the atmosphere for any reason
other than to fill or empty a system. PAG oil is very hygroscopic (absorbs water) and will rapidly become con-
taminated by atmospheric moisture.
PAG oil is
NOTcompatible with previously used mineral based oils and must NEVER be mixed (Fig. 1). Do not
re
-use oil when it has been separated from refrigerant, following a recovery cycle. Dispose of used oil safely.
14.1.4 System Maintenance
0 When depressurizing a system do not vent
refrigerant directlyto atmosphere, always use Jaguar
approved recovery equipment.
0 Always decant compressor oil from a sealed con- tainer and do not leave oil exposed to the atmosphere
for any reason other than to fill or empty
a system.
PAG oil is very hygroscopic and will rapidly become
contaminated by atmospheric moisture.
0 Plug pipes and units immediately after disconnection
and only unplug immediately priorto connection. Do
not leave the system open to atmosphere.
0 It is not necessary to renew the receiver drier when- ever the system has been 'opened' as previously ad-
vised - see note this page. However,if a unit or part
of the system is left open for more than five minutes,
it may be advisable to renew the receiver drier. This
guidance is based on
U.K average humidity levels;
therefore, locations with lower humidity will be less
critical to moisturecontamination of the unit.
It must
be stressed that there is not
a 'safe' period for workto
be carried out in: ALWAYS plug pipes and units im-
mediately after disconnection and only remove plugs
immediately prior to connection.
J82-387
Fin. 1
U: The receiver / drier MUST be renewed if the compressor has failed or if it is suspected that debris may be in
the system.
0 If replacement parts are supplied without transit plugs and seals DO NOT use the parts. Return them to your
supplier.
0 Diagnostic equipment for pressure, mass and volume should be calibrated regularly and certified by a third
party organization.
0 Use extreme care when handling and securing aluminium fittings, always use a backing spanner and take
special care when handling the evaporator.
0 Use only the correct or recommended tools for the job and apply the manufacturer's torque specifications.
Issue 1 August 1994 2 X300 VSM