1994 JAGUAR XJ6 sensor

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

Electrical rl
15.2 INSTRUMENTS
15.2.1 General Description
The instruments measure, monitor and display data relevant to the vehicle’s performance. Data is received from
sensors positioned at various locations around the vehicle via two multi-pin sockets located at the rear of the
instrument panel and is than presented using three different visual display methods described as follows:
15.2.2 Analog Display
This is used to display road speed, engine speed, oil pressure, battery condition, fuel level and coolant temperature.
15.2.3 Indicator Lamps
These indicate the presence of any hazard /fault conditions or operational actions.
15.2.4 LCD (Liquid Crystal Disp/ay)
This single line, six digit seven segment display is normally used to display the odometer reading but can also be used
to display vehicle condition messages associated with particular warning lamps and trip computer information.
15.2.5 Transducers
These devices listed as follows transmit vehicle condition to the instruments:
0 Engine Coolant Temperature Transmitter
0 Low Coolant Level Probe
0 Oil Pressure Transmitter - AJ16N12
0 Fuel Gauge Tank Unit - AJlW12
Fault conditions and their causes displayed by the instruments and warning lamps are covered in more detail
by further information contained within the
Electrical Diagnostic Manual.
15.2.6 Instrument Panel, General
2 I I 3 1
1. 24 Way Connector 3. Identification Label 2. 4% Way Connector 4. Bulb Holder
Fig.
1 Instrument Panel, Rear View
X300 VSM Issue 1 August 1994 8
c

15.6
15.6.1
The single windscreen wiper blade is controlled by a windscreen wiper/washer switch located on the right-hand side
of the steering column switchgear (see Fig.
1).
POWER WASH & SCREEN WASH/ WlPE
Windscreen Washers & Wipers, General Description
The windscreen wiper motor, part of the wiper motor
assembly operates at slow or fast speeds and drives the
lever assembly, a single arm and blade via a crank.
On
V12 engined vehicles the wiper motor assembly is
mounted to the front of the bulkhead with the motor
protruding into the plenum chamber, whilst on AJ16 engined vehicles the wiper motor assembly is mounted into
the same position, but with the motor protruding into the
engine compartment.
For wipe and wash operation
a mixture of water and special
'Jaguar Windscreen Fluid' is drawn from the PVC reservoir
assembly by
two electrically controlled pumps and is then
distributed via flexible feeder hoses interconnected using
'TEE' pieces to the screen wash jets and to heated power
wash jets (where fitted). The ends of power wash hoses are
fitted with 'quick
fit' fluid connectors.
The
two pumps, one for screen wash and one for headlamp
power wash are externally fitted to the reservoir located at
the front right
-hand side of the engine compartment.
Contained within the reservoirs pull-up neckis a serviceable
filter.
The screen wash jets with independently adjustable
eyeballs are mounted on the plenum chamber finisher and
the temperature of the fluid passing through the jets is
controlled from an ambient temperature sensor fitted near
the inlet of the right
-hand side air duct. Fig.
1
The
fluid temperature for each of the headlamp wipe wash operation is controlled by self regulating, heated power
wash jets mounted on to either side of the bumper.
Each powerwash jet is protected by
a cover supplied with an integral cover-to-bumperseal. The cover snap fixes into
the bumper.
15.6.2
This switch only operates with the ignition switch in position '11' and has the following functions:
windscreen Wiper and Washer Switch
Position 0 The wind screen wiper is switched 'OFF' and parked.
Position 1: Normal speed wiper operation is obtained by pushing the switch lever up one position.
Position 2: High speed wiper operation is obtained by pushing the switch lever fully up.
Position D: To obtain intermittent wiper operation the switch lever is pushed down and released.
The delay period will vary with vehicle speed. To cancel the function repeat the procedure.
15.6.2.1 Single Wipe Operation
To obtain a single sweep of the wiper blade, the lever is pulled towards the steering wheel and released.
W The intermittenmick wipe operations are both at slow speed and they are controlled by a Central Control
Module (CCM), which also controls the headlamp power wash operation.
Issue 1 August 1994 X300 VSM

SPECIFICATION - 1995 MODEL YEAR VEHICLES
Engine See relevant engine service manual
Engine Management System
VI2 ............................................................... Nippondenso
6cyl. .............................................................. LucasGEMS
Cooling System
Water pump
type
............................................................... Centrifugal
Cooling fans
- 6 cyl. ................................................ Two electric fans controlled by
Cooling fans
- VI2 ................................................. One engine driven fan and two
Cooling system control
............................................. Thermostat (two on V12)
Thermostat opening temperature .................................... 88OC
Fully open at ....................................................... 93,5 to 96OC
Filler cap pressure rating ........................................... 1,2 bar
drive
.............................................................. Belt
temperature sensor in radiator
electric fans controlled by
temperature sensor
in radiator
Fuel System Pump
one fitted on 6 cyl. (3.2 Liter and 4.0 Liter normally aspirated)
two fitted on 6
cyl. (4.0 Liter supercharged) and VI2
Electrical, module type, fitted in the tank. Integral 70 micron filter.
Make
.............................................................. Nippondenso
Fuel pressure (nominal)
............................................ 3,O bar
Second
pump switches at:
Pump
type
......................................................... Regenerative turbine
Fuel pressure (supercharged)
....................................... 3,7 bar max.
4.0 Liter supercharged ........................................... in at 4000 RPM
out at 3200 RPM
VI2 ............................................................ load sensitiveswitching
Clutch
Plate diameter .....................................................
Clutch hydraulic fluid ............................................... DOT 4
280mm single plate, LUK
Manual Transmission Ratios (Gefragl
First gear .......................................................... 3,553:l
Second gear ....................................................... 2,041: 1
Third gear ......................................................... 1,400 : 1
Fourth gear
........................................................ 1,000 : 1
Fifth gear
.......................................................... 0,755:l
Reverse ........................................................... 3,553: 1
Issue 1 August 1994 X300 VSM AI-95MY 1

e LmmJ
Power assisted, ventilated discs,
sliding calipers: FN60 single piston
60mm Power assisted, ventilated discs,
FN48 single piston sliding calipers
48mm Mechanical, operating
on rear
drums within bell of the rear brake
discs.
291mm
305mm
28mm. wear limit 27mm
20mm, wear limit 18,5mm
Vacuum power, hydraulic operation
Bore diameter:
25,4mm
Jurid 518
Jurid 101
Ferodo 3612
6,51 vacuum
Electrical inductive sensors at the
wheels which detect rotational
speed.
Hydraulic: vehicles
with traction
control - contains four solenoid
valves, one for each wheel; vehicles
without traction control
- contains
three solenoid valves, one for each front wheel and one for both rear
wheels.
Solid state digital
unit (integral with hydraulic module).
Specification
Braking System
Front brakes: all vehicles.. ........ .................... ........... ...
Caliper piston diameter: ..........
Rear brakes: all vehicles ..........
...
...
....................
....................
...........
...........
Caliper piston diameter ...........
Parking brake ....................
...
...
....................
....................
...........
...........
Disc diameter:
Front
.........................
Rear .........................
Front .........................
Rear .........................
Brake operation .................
Master cylinder ..................
Main brake friction pad material:
Front
........................
Rear ........................
Parking brake friction shoe material
Brake
servo booster assembly
Boost ratio
......................
Disc thickness:
...
... ....................
....................
...........
...........
...
...
...
...
....................
....................
....................
....................
...........
...........
...........
...........
...
...
.. ....................
....................
....................
...........
...........
...........
... .................... ...........
Anti-lock braking system (ABSI
Wheel sensors ................... ... .................... ...........
ABS modulator .................. ... .................... ...........
0
0
Control module type ............. ... .................... .........
Issue 1 August 1994 X300 VSM AI-95MY 3

page e
Sub-Section Title SRO
A5.7 ............. System Testing ...................................................................... 77
A5.7.1
........... Locking (key) ....................................................................... \
17
A5.7.2 ........... Unlocking (key) .................................................................... 17
A5.7.3 ........... Locking / unlocking (key-ring transmitter) ............................................... 18
A5.7.4
........... Locking (key-ring transmitter) ......................................................... 18
A5.7.5
........... Unlocking (key-ring transmitter) ....................................................... 19
A5.7.6
........... Panic feature (key-ring transmitter only) ................................................ 19
A5.7.7
........... Centrallocking ..................................................................... 20
A5.7.8
........... Passivearming ...................................................................... 20
A5.7.9
........... Trunk release ....................................................................... \
20
A5.7.7
0 .......... Trunk valet isolate ................................................................... 20
A5.7.11
.......... Flushsillbuttons .................................................................... 20
A5.9
............. Pin-point Tests ...................................................................... 24
A5.8
............. Diagnostic
Sub-Routines ............................................................. 21
A5.9.1
........... Central locking switch ............................................................... 25
A5.9.2
........... Door ajar switches .................................................................. 26
A5.9.3
........... Door locks ........................................................................\
. 27
A5.9.4
........... Door lock actuators and switch ........................................................ 28
A5.9.5
........... Hood switch ....................................................................... \
29 e
A5.9.6 ........... Horns ........................................................................\
..... 30
A5.9.7
........... Inclinationsensor ................................................................... 31
A5.9.8
........... Intrusionsensors .................................................................... 32
A5 . 9.7 0 .......... Reader exciter coil and module ....................................................... 34
A5.9.12
.......... Sounder ........................................................................\
... 36
A5.9.14
.......... Trunk lid release switches ............................................................ 38
A5.9.15
.......... Valetswitch ........................................................................\
39
A5 . 10 ............ Inclination Sensor - Renew ...................................... 86.52.2 1 ............ 40
A5 . 12 ............ Intrusion Sensor - Renew ........................................ 86.52.20 ............ 41
A5 . 14 ............ Valet Switch - Renew ........................................... 86.52.08 ............ 41
A5.9.9
........... Key
barrel switches .................................................................. 33
A5.9.11
.......... Security active indicator .............................................................. 35
A5.9.73
.......... Trunk lid release actuator and relay .................................................... 37
A5 . 11 ............ Security and Locking Control Module (SLCM) - Renew ............... 86.52.01 ............ 40
AS
. 73 ............ Hand Transmitter Battery - Renew ................................ 86.52.28 ............ 41
A5 . 15 ............ Security Siren (12 Cyl) - Renew .................................. 86.52.03 ............ 42
A5 . 16 ............ Security Siren (6 Cyl) - Renew ................................... 86.52.03 ............ 42
A5 . 17 ............ Front Door Lock Assembly - Renew ............................... 86.25.45 ............ 43
A5 . 18 ............ Rear Door Lock Assembly - Renew ............................... 86.25.47 ............ 44
Trunk Lid Lock Actuator - Renew ................................. 86.25.49 ............ 44
Clock Module - Renew ......................................... 86.80.73 ............ 44
Reader Exciter Coil and Module - Renew ............................................... 44
e
A5 . 19 ............
A5.20 ............
A5.2 1 ............
e
X300 VSM Issue 1 August 1994 ii

I 03 I Door lock actuators (4 off) 1 part of door assemblv I I
Issue 1 August 1994 X300 VSM 3 I
1 04 I Door lock switches (2 off) I part of door latch assembly I I
1 05 IHoodswitch 1 located above siren I I
1 06 IHorn 1 located on front RH side of en(
1 07 I Inclination sensor I behind luggage compartment LH liner I I
I 08 I Intrusion sensor (LH) I located above LH door behind roof lining I
I 09 I intrusion sensor (RH) 1 located above LH door behind roof lining I
I
1 1 part of door latch assembly I 10 I Key barrel switches (2 off)
1 11 I Key fob transmitter 1 part of key fob I I
I 12 I Key transponder 1 part of key I I
I 13 I Reader exciter coil 1 part of ignition switch I I
I 14 I Reader exciter module 1 part of steering column assembly I I
1 15 I Relays (deadlock) I I I
1 18 I Security active indicator part of central locking switch I I
I 19 I Securitv and lockina control module (SLCM) located in luaaaae compartment behind LH liner I I
1 20 ISounder , located on front RH side of engine bay I I
1 25 IValet switch 1 in centre console compartment I I
A5.2 COMPONENT DESCR/PT/O NS I
stem - RESTRICTED ISSUE
Key to Component Locations
Item No. Description Access details
01 Central locking switch part of clock module
02
1 I
Door ajar switches (4 off)
I I
part of rear screen
I 21 I Trunk release actuator located in trunk latch mechanism
22 I Trunk release relay
23
24 I Trunk lid release switch (external)
I Trunk lid release switch (internal) part of
fascia switchpack ,
A5.2.1 Central locking switch
A5.2.2 Door ajar switches
Located in each front door lock mechanism to indicate door not closed correctly.
-
The central locking switch is located on the driver'sfascia switchpack and allows locking / unlocking and all close from
inside the vehicle when all doors are closed.
A5.2.3
Located within each front door panel assembly to provide automatic lock / unlock operation.
Door lock actuator and switch
A5.2.4 Door lock switch
Located in each front door lock mechanism to indicate door lock/ unlock state.
A5.2.5 Hood switch
Located underhood adjacent to the horn to give indication of hood not closed correctly.
A5.2.6 Horns
Located adjacent to each headlight unit and utilized as part of the full alarm application.