1994 JAGUAR XJ6 heating

Climate Control Systems
8. AUTO selection display.
9. EXTERIOR temperature selection button. There are two modes:
a) Press and immediate release; provides timed display of four (4) seconds.
b) Press and hold for two (2) seconds; 'latches' the mode until operator over-ride.
10. A/C push-on / push-off button will either engage or disengage (as indicated by the state lamp) the refrigeration
system compressor. The state lamp is also used as a compressor speed fault indicator,see System protection, this
section.
11. AUTO push-on button and state lamp. When selected and the state lamp lit, the A/C mode is selected and control
of demand temperature, fans speed, and air distribution is automatic. AUTO is cancelled by selection of any 'dis- tribution' button, A/C off, or manual FANS SPEED.
12. DEFROST push
-on / push-off button and state lamp. When engaged, air is distributed to the screen at maximum
fans speed and the heated front screen elements (where fitted) are ener ized. The heated front screen is automati- cally timed for a six (6) minute cycle but may be cancelled by pressing tfe HEATED FRONT SCREEN button. Auto- matic temperature control is retained and the fans speed may be manually reduced. Deselection will return the
system to the previous state and selection of AUTO will resume automatic system control.
13. The push
-on / push-off (F) button with state lamp manually controls the HEATED FRONT SCREEN (where fitted).
This facility allows rapid screen de-icing using laminated electrical heating elements to supplement the hot air
defrost.
14. The push-on / push-off (R) button with state lamp manually controls the HEATED REAR SCREEN and door mirror
glass heating elements for a timed cycle of; screen twenty (20) minutes and mirrors eleven (1 1) minutes.
m: The state lamp will remain lit after the mirror timer has gone through its 11 minute cycle and will not go out
until either completion of the 20 minute screen cycle or manual override.
15. TEMPERATURE decrease button
in IoC or I0F steps.
16. TEMPERATURE increase button in
IoC or I0F steps.
w: Automatic temperature control operates over the range 17OC to 31OC (61OF to 90OF). Extreme limits selected
by items 15 and 16 ('Lo' and 'Hi') provide maximum cooling or heating at maximum fans speed.
17. FACE level manual distribution over
-ride push-on / push-off button and state lamp.
0 18. Bi LEVEL (foot and face) manual distribution over-ride push-on / push-off button and state lamp.
19. FOOT level manual distribution over
-ride push-on / push-off button and state lamp.
20. DEMIST (screen and foot) level manual distribution over
-ride push-on / push-off button and state lamp.
!Y&Q: Selection of AUTO will over-ride any manual setting and deselection of any manual distribution will revertthe
system to AUTO distribution.
21. FACE VENTTEMPERATURE CONTROL thumb
-wheel. Situated between dash centre face level vents to reduce face
air outlet temperature relative to that of the foot-well.
Issue 1 August 1994 X300 VSM 5

Climate Control Systems
lnsufficent Cooling
0 Sluggish blower motor(s).
0 Restricted blower inlet or outlet passage
0 Blocked or partially restricted condenser matrix or fins.
0 Blocked or partially restricted evaporator matrix.
0 Blocked or partially restricted filter in the receiver drier.
0 Blocked or partially restricted expansion valve.
0 Partially collapsed flexible pipe.
0 Expansion valve temperature sensor faulty (this sensor is integral with valve and is not serviceable).
0 Excessive moisture in the system.
0 Air in the system.
0 Low refrigerant charge - possible code 23.
0 Compressor clutch slipping.
0 Blower flaps or distribution vents closed or partially seized - possible codes 41 or 46.
0 Coolant flow valve not closed.
0 Evaporator sensor incorrectly positioned
m: Should a leakor low refrigerant be established as the cause of /NSUff/C/€NTCOOL/NG,followthe procedures
Recovery / Recycle / Recharge, this section, and observe all refrigerant and oil handling instructions.
lntermiffent Cooling
0 Is the electrical circuit to the compressor clutch consistent?
0 Is the electrical circuit to the blower motor(s) consistent?
0 Compressor clutch slipping?
0 Motorized in-car aspirator or evaporator temperature sensor faulty, causing temperature variations - possible
codes 11 or 13.
0 Blocked or partially restricted evaporator or condenser.
Noisy System
0 Loose or damaged compressor drive belt.
0 Loose or damaged compressor mountings.
0 Compressor oil level low, look for evidence of leakage.
0 Compressor damage caused by low oil level or internal debris.
0 Blower motor(s) noisy.
0 Excessive refrigerant charge, witnessed by vibration and 'thumping' in the high pressure line (may be indicated
by high HIGH & high LOW side pressures).
0 Low refrigerant charge causing 'hissing' at the expansion valve (may be indicated by low HIGH side pressure).
0 Excessive moisture in the system causing expansion valve noise.
0 Air-lock in water pump*.
lnsufficent Heating
0 Coolant flow valve stuck in the closed position.
0 Motorized in-car aspirator seized.
0 Cool air by-pass damper stuck or seized - possible code 43.
0 Blocked or restricted blower inlet or outlet.
0 Low coolant level.
0 Blower fan speed low.
0 Coolant thermostat faulty or seized open.
0 Water pump inoperative or blocked
0 Air-lock in matrix*.
m: * Please see Sections 4.1 and 4.2 for specific coolant fill / bleed procedures.
Electrical faults may be more rapidly traced using
(JDE), please refer to the (EDM).
Issue 1 August 1994 16 X300 VSM

Climate Control Systems
Action
Simultaneously hold AUTO and RECIRC - Switch
ignition to ON
Press AUTO
Press FACE
Simultaneously press FACE and HRW
Press
RECIRC (Press FAN to skip actuator check)
Press FAN
14.11 SYSTEM SE1 F-TEST
14.11. I Interrogation Procedure via the Control Panel
Result
Display element check
Any stored fault NUMERIC code
(If ZERO appears there are
no stored codes)
Scroll through stored faults (maximum of
5)
Clear stored fault codes (may need to be repeated for each
fault)
Initiate actuator check (Actuator codes
20 through 27*)
Exit error check mode
Fault Code
0
11
12
13
14
15
21
22
0
23
14.1 1.2 Control Panel Fault Code Key
Item Description
Normal Operation No
fault codes present, wait 30 seconds for system self-
check.
Motorized In
-car Aspirator Open /short in sensor circuit. Panel fault codes are not stored
for motorized in
-car aspirator motor failure.
Ambient Temperature Sensor Open
/ short circuits.
Evaporator Temperature Sensor Open
/ short circuits.
Water Temperature Input Instrument pack output.
Heater Matrix Temperature Sensor Open
/ short circuits.
Solar Sensor Open
/ short circuits.
Compressor Lock Signal
- 12 cylin- Open /short circuits. Low gas charge, low compressor oil,
der and supercharged
6 cylinder loose belt.
engines only.
Refrigerant Pressure Switch Open /short circuits. Low gas charge*
31
32
33
34
35
36 0
I 24 1 Face Vent Demand Potentiometer. 1 Open / short circuits
LH Fresh
/ Recirc. Potentiometer
RH Fresh / Recirc. Potentiometer
cool ~i~ by-pass potentiometer
Defrost Vent Potentiometer
Centre Vent Potentiometer
Foot Vent Potentiometer Open
/short circuit
in potentiometer. feed.
w: and log further faults. Cycling the ignition two or three times
after rectification of the fault will cure this.
In certain circumstances, the motor can over-travel
43
44
I Defrost Vent Motor
I Cool Air by-pass Motor
I 41 I LH Fresh / Recirc. Motor I
Check for short / open circuits in motor drive lines. Motor flap
sticking
/ jammed.
1 42 I RH Fresh / Recirc. Motor I
1 45 I Centre Vent Motor I
46 I Foot Vent Motor
w: In ambient temperatures below Oo C, the system may log fault code 23 because the low ambient causes a tem-
porary low gas pressure. Where the ambient temperature rise above 40" C, and if the engine is close to over- heating, feed to the compressor clutch may be cut and code 23 registered.*
X300 VSM 17 Issue 1 August 1994

Routine Maintenance
Service intervals
Check power steering system for leaks and hydraulic
pipes
/ unions for chafing /corrosion
Check Cooling
/ heating system for leaks / security
Check visually hydraulic hoses
/ pipes / unions for
leaks
/ chafing / cracks / corrosion
Check condition of steering rack joint covers
Check speed control vacuum hoses for security and
general condition
Grease door check
-arm side edges
Check parking brake cable adjustment
Miles (X 1000)
7.5 15
X X
xx
xx
xx
xx
X
xx
xxxxxx
xxxxxx
x
X X X
xxxxxx
X X X
xxxxxx
XIX x x x
-
Clean out radiator matrix and condenser (where fitted)
to remove dirt accumulation
Clean antenna mast
xx
Carry out road / roller test Ix
i
0
0
0
X
x
issue 1 August 1994 A2-95MY 6 X300 VSM

General Fitting Instructions
J51 051
A3.3 TAPER ROLLER BEARINGS,
FAULT DIAGNOSIS
I
Fault
Bent cage.
Cause
Improper handling or use of tool.
Remedy
Renew the bearing.
Fault
Bent cage.
Cause
Improper handling or use of tool.
Remedy
Renew the bearing.
Fault
Galling.
Cause
Marks on roller ends due to overheating, lubricant failure or
overloading.
Remedy
Renew the bearing. Check the seals and ensure that the
bearing is properly lubricated.
Fault
Step wear.
Cause
Wear on the roller ends caused by fine abrasives.
Remedy
Clean all components and housings. Check the seals and
bearings, and renew if leaking, rough or noisy.
Fault
Fretting.
Cause
Corrosion caused by small movement of components with
no lubrication.
Remedy
Renew the bearing. Check the seals for leakage and ensure
that there is adequate lubrication.
J51 050
J51 052
X300 VSM Issue 1 August 1994 8

General Fitting Instructions
I
Fault
Roller wear.
Cause
Marks on track and rollers caused by fine abrasives.
Remedy
Clean all components and housings. Check the seals and
bearings, and renew if leaking, rough or noisy.
Fault
Cracked race.
Cause
Race cracked due to incorrect fitting to shaft, tipping or poor
seating.
Remedy
Renew the bearing and check the condition of the seals.
Fault
Discolouration.
Cause
Discolouration ranging from black to light brown caused by
moisture or incorrect use of lubricants.
Remedy
Reuse bearings if stains can be removed by light polishing
or if no evidence of overheating is apparent. Checkthe seals
and other component part condition. Renew as necessary.
51 060
[pzq-j - ..., .... *au
....... ........ e L. U
1
Fault
Discolouration.
Cause
Heat discolouration ranging from blue to faint yellow,
resulting from overload or incorrect lubricant. As excessive
heat can cause softening of tracks and rollers, check by
drawing a fine
file over a softened area. If faulty, the file will
grab and cut metal. If still hard, the file will skid over the
surface without removing any material.
Remedy
Renewthe bearings and seals if any heat damage is evident.
51 062
Issue 1 August 1994 X300 VSM 10

6 Fault
Seizure.
Cause
Seizure caused by lack of lubrication, excessive loads or the
ingress of foreign matter.
Remedy
Renew the bearings. Check the seals for wear and ensure
that there is adequate lubrication.
Fault
Etching.
Cause
The bearing surfaces are grey or greyish black, with the
rollers and track material being etched away. This is usually
related to uneven spacing of the rollers.
Remedy - Renew the bearings. Check the seals for wear and ensure
that there is adequate lubrication.
Fault
Rotating track and inner race material removal.
Cause
Removal of material due to slippage. This can be caused by
poor fit, incorrect lubrication, overheating, overloading and
poor assembly.
Remedy
Renew the bearings and clean all related parts. Check the fit
and ensure the replacement bearings are the correct type.
Renew the shaft or housing if damaged.
J51 OS6
Issue 1 August 1994 11 X300 VSM

Body Systems & Body Repair
Optimum temperature 6OoC - 7OoC
Minimum temperature 35%
Maximum Temperature 7 5oc
A4.5 GLAZING
A4.5.1 Special notes
In order that the design condition of the vehicle is preserved when direct glazing repairs are carried out, it is essential
that both the applied materials and processes are as stipulated.
Application time - including
positioning
4 minutes
Will not bond
A4.5.1.1 Glass and Body Preparation
The preparation methods and materials, as used with the Betaseal HV3 system on previous Jaguar vehicles, are fully
compatible with the current sedan range.
Ease of working and extended process time may be gained by ensuring that the vehicle body and replacement glass
are 'soaked
at room temperature, a minimum of 2OoC, prior to adhesive application and fitting.
Should damage occur to the body flange finish, rectify as appropriate with the full paint refinishing process as de
- scribed in the 'Paint Refinishing Manual' see section 4.4.1.1.
A4.5.1.2 Adhesive Application Temperature
The specified adhesive has a high viscosity and is not easily applied at 'room temperature' using conventional
methods. When the adhesive is applied it chills rapidly on contact with the body and reverts to the hard condition, thus
providing full retention (not full strength) within minutes.
Raising the temperature of the adhesive lowers the viscosity and speeds up the flow.
It is recommended therefore that
the adhesive is pre-warmed in a heated cabinet for a minimum of 20 (twenty) minutes and the extrusion gun has inte- gral heating elements, see Preliminary pages for details.
A4.5.1.3 Adhesive Application
CAUTION: The glass will not bond to the body if the time
taken to apply the adhesive AND position the glass. exceeds the stated limit.
It is recommended that the bead of adhesive conforms tothe shape and dimensions as shown in Fig. 1 and is positioned
along the edge of the rubber.
m: The depth of the glass and thus the thickness of the
adhesive, is controlled by the screen rubber 'bot- toming' on the body flange.
A4.5.1.4 Adhesive Curing
The specified polyurethane adhesive cures by exposure to
moisture and NOT by heat. Cure times may vary consider- ablyand are dependant upon ambient humidity levels, how- everthe initial 'chill off will occur within l to4 minutes, after
which the screen may not be moved (this is entirely depend- ant upon the application temperature and rate of cooling). 1
12nnrl6mnr
J76-1031
1.
Fitted condition
2. Bead application
Fig. 1
X300 VSM Issue 1 August 1994 34