1994 JAGUAR XJ6 ignition

Climate Control Systems
CONTROL MODULE FAULT & CONDITION SELF-ANALYSIS
0 14.6 14.6.1 System Health
The climate control system has a 'self-test' facility, accessible from the control panel. The self test sequence has two
basic modes:
0 System error information is stored in the A/CCM up to a maximum of five faults. Should a fault occur there will
be an audible 'beep' and the message 'Er' will be displayed on the control panel LCD for approximately five (5)
seconds after ignition on. Please note that this will happen only once in any ignition switch cycle. The error
source may be accessed by the procedure described in 'Self Test System Diagnosis', this section.
0 Panel communication check may be initiated by following the instruction in 'Self Test System Diagnosis', this
section.
Nsfe: Displayed error codes are NOT directly related to Jaguar Diagnostic Equipment (JDE) but more detailed fault
related information may be accessed using Portable Diagnostic Unit (PDU).
14.6.2 System Protection
Power to the compressor clutch may be cut should either the engine management or air conditioning control systems
detect certain conditions; these conditions may be caused by Fault or Demand and can be classified thus:
0 Engine coolant overheat,
0 Refrigerant excessive pressure.
0 Refrigerant, insufficient pressure or low charge weight.
0 Speed differential between compressor and crankshaft caused by belt slippage or compressor seizure (indi-
cated by A/C state lamp flashing once per second) - 12 cylinder engine only. This feature, 'lock sensing' is fully
explained
in the EDM.
Demand
0 Engine maximum power requirement
0 Electrical system drain at engine idle.
X300 VSM 9 Issue 1 August 1994

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

15.1.2 Handling Undeployed Modules
The electrically-activated airbag module contains sodium azide and sodium nitrate which are poisonous and
extremely flammable substances.
Their contact with acid, water or heavy metals may produce harmful and irritating gases or combustible compounds.
The airbag module is
non-serviceable and must not be dismantled, punctured, incinerated or welded.
WARNING: DO NOT ATTEMPT ANY REPAIRS TO THE AIRBAG MODULE.
Never measure the resistance of the airbag module, as this may cause the airbag to deploy. Suspect modules must be returned to Jaguar Cars Ltd. or their importer for replacement.
Tampering or mishandling can result in personal injury.
Keep away from heat, sparks and open flames. Do not store
at temperatures exceeding 93O Celsius (200OF).
Keep away from electrical equipment as electrical contact may cause ignition.
Do not drop or impact airbag module.
Always position module 'cover
-up'.
Ensure that the connector is protected to prevent damage.
J76-1058
Fig. 1 The Driver-side Airbag
Store modules in a secure lockable cabinet.
Never position projectile material over the undeployed airbag as this can cause injury in the event of inadvertent
deployment.

Do not wrap arms around module when carrying and always carry module with cover and ventsfacing awayfrom body
to avoid personal injury in the event of inadvertent deployment.
Never carry airbag module by wires or the connector.
The chemical propellant mixture deploying the airbag is
a solid and therefore inhalation exposure is unlikely even if module is ruptured without deployment.
As far as practicable, avoid skin contact with, or ingestion of, the materials present after combustion. Exposure to high
concentrations of propellant mixture may cause headache, nausea, blurred vision, faintness, cyanosis, lowering of
blood pressure, tachycardia and shortness of breath.
WARNING:SODlUM AZlDE HAS BEEN LISTED AS AN 'EXTRAORDINARY HAZARDOUS SUBSTANCE OR
CARCINOGEN BY THE STATE OF MASSACHUSETTS, USA. SODIUM AZlDE HAS BEEN LISTED ON THE 'RIGHT TO KNOW HAZARDOUS SUBSTANCE LIST' BY THE STATE OF NEW JERSEY AND IS ALSO
REGARDED AS A 'SPECIAL HEALTH HAZARD SUBSTANCE BY THE STATE. THE PROPELLANT MIXTURE IS SENSITIVE TO PREMATURE IGNITION BY ELECTRICAL SOURCES IF NOT PROPERLY PROTECTED AND
ISOLATED.
15.1.3 Emergency First Aid Procedures
If the airbag is ruptured without deployment and exposure to the propellant mixture occurs, observe the following
first-aid treatments:
0 Ingestion - Do not induce vomiting and seek prompt medical attention.
0 Skin contact- Immediately wash skin with soap and water and seek medical attention.
0 Eyes - Immediately flush eyes with water for at least 20 minutes and seek prompt medical attention.
0 Inhalation - Immediately move victim to fresh air and seek medical attention.
0 Physical trauma, eg burns, abrasions, or impact due to premature ignition or deployment of the inflator
assembly - Treat symptomatically and seek prompt medical attention.
0
15.1.4
See 'Emergency First Aid Procedures' above.
Prevent contact of the inflator with liquids, combustibles and flammable materials. Failure to followthese instructions
could result in chemical burns and personal injury.
Ensure modules are cool before handling.
After deployment the airbag surface contains small deposits of sodium hydroxide which can cause irritation to the skin
and eyes.
When handling deployed airbags, always wear rubber gloves to
BS 1651 grade 2 or equivalent, and chemical resistant
goggles to BS 2092 grade 2 or equivalent.
After handling deployed airbags, immediately wash hands and exposed skin surface areas with mild soap and water.
Sakty Procedures For Handling Depbyed (Fid) Modules
15.1.5 Safety Procedures For Handling Undeployed Damaged Modules
The material inside the module is hermetically sealed and is completely consumed during deployment.
No attempt should be made to open the module
as this leads to a risk of exposure to sodium azide.
In the unlikely event of
a gas generator being damaged, it must be examined by trained personnel before any attempt
is made to remove and/or deploy.
Full protective clothing must be worn when dealing with any spillage.
Ruptured units must be stored away from acids, halogens, heavy metals and metal salts. Damaged units may produce
hydrazoic acid if exposed to liquids.
Failure to comply with these instructions may result in fire, noxious fumes and severe personal injury or death.
X300 VSM 3 Issue 1 August 1994

rl Electrical
15.1.6 Fire Hazard Infonnath
Thermal decomposition or combustion may produce dense smoke and other dangerous fumes which in fire situations
form
a highly toxic explosive.
In the event of fire the surrounding area must be evacuated and
all personnel kept well upwind of the area.
Full fire fighting protective gear and
a self contained breathing apparatus operating in the positive pressure mode must
be worn for combating fire. Material near fires must be cooled with water spray to prevent ignition.
Fires should be allowed to burn themselves
out if not threatening to life or property. If fire is threatening to life or prop- erty use copious quantities of water to extinguish.
15.1.7 Ventilath
Local exhaust ventilation designed by a professional engineer should be provided if vapours, fumes, or dusts are gen- erated whilst working with airbag module.
The latest issue of the manual for recommended practices on 'Industrial Ventilation' is available from the
ACGIH Com- mittee on Industrial Ventilation, PO Box 16153, Lansing, MI 48910, USA.
The need for local exhaust ventilation should be evaluated by a professional industrial hygienist.
15.1.8 Respiratory Precauth
To prevent the inhalation of dangerous fumes and dusts, an approved mask should be worn.
15.1.9 Eye Protection
Chemical protective goggles are recommended where there is a possibility of eye contact with the propellant.
Safety glasses with side shields are recommended for
all other operations.
15.1. I0 Protective Clothing
Approved protective gloves, overalls and shoes / boots should be worn.
15.1.1 1 Handling and Storage Precautions
Do not store airbag module near live electrical equipment or circuitry. Store in a dry environment at ambient tempera-
tures.
Good housekeeping and engineering practices should be employed to prevent the generation and accumulation of
dusts. Store in compliance with
all local state and federal regulations.
15.1.12 Driver And Passenger Airbag Modules Assembly / Removal / Service Instructions
Before starting work, ensure ignition switch is in 'IocK position, key is removed and negative terminal cable
is disconnected from the battery.
As the airbag is equipped with a back up power source and due to the risk of airbag being inadvertently
deployed, wait one minute or longer before starting work.
0 Disconnecting the battery cancels the memory for clock, radio, seats, mirrors, steering column and any other
components using battery power. Reset memory after work is completed.
0 Never use airbags from other vehicles, always use new parts.
0 After work is completed, reconnect battery and perform warning light check see diagnostic manual.
0 Never use electrical probes to check voltage or electrical resistance.
0 Disconnect the airbag before carrying out any work on, or in the vicinity of module, or when using electric weld- ing equipment.
0 Always ensure that battery negative has been disconnected for one minute or longer before commencing any
removal procedure.
EB
Issue 1 August 1994 4 X300 VSM

31
30
29
28 27
26
4 26 24 21 23 22 7 20 19 18 18 17 8
a
10
11
12
13
14
1s
1M-137
1. Tachometer 2. Speedometer
3. Battery Condition 4. FuelGauge 5. Oil Pressure 6. Coolant Temperature 7. Odometer /Trip Computer Display 8. Primary Warning Indicators (RED) 9. Exhaust Temperature 10. Low Oil Pressure 11. Seat Belt Not Fastened 12. Boot Open 13. DoorOpen 14. Coolant Level 15. Air Bag Fault 16. Status / Warning Lamps
17. Hand Brake On (RED) 18. Brake System Fault (RED)
19. Main Beam On (BLUE) 20. Direction Indicator Right (GREEN) 21. Status / Warning Lamps 22. Direction Indicator Left (GREEN) 23. Traction Control Off (GREEN) 24. Transmission Sport Mode (GREEN) 25. Charging Fault (RED) 26. Check Engine (AMBER)
27. Low Fuel Level (AMBER) 28. Anti - Lock Fault (AMBER) 29. Traction Control Fail (AMBER) 30. Bulb Fail (AMBER) 31. Washer Fluid Level (AMBER) 32. Transmission Fault (AMBER)
Fig.
1 Instrument Panel, Front Mew
w: The 'Premium Unleaded Fuel Only' caution is added to the Federal Market vehicles, also 'PARK BRAKE and
'BRAKE' replace international symbols used in all other markets.
m: Six cylinder vehicle version shown; the tachometer red-line on 12 cylinder vehicles starts at 6000 RPM.
The front of the
PECUSprogrammable instrument panel features 6 analog gauges, 22 warning lamps /tell tales and
a Liquid Crystal Display (LCD), the rear of the panel accommodates two PCB mounted connectors, one 24-way
connector, one 48-way connector, one instrument panel identification label and 14 light bulbs arranged in groups of
seven on either side. Three power inputs and two ground inputs are provided for 'POWER UP' and 'POWER DOWN'
sequence, the three power inputs comprising battery, ignition and auxiliary. The instruments are protected by a
housing
/ lens assembly.
15.2.7 Gauges
The two major gauges are tachometer and speedometer, and the four minor gauges indicate battery condition, fuel
level, oil pressure and coolant temperature.
Each gauge is contained
in a sealed non-serviceable can and must be renewed as a complete unit in case of any
damage.
CAUTION: Extreme care should be exercised when renewing instrument pand components to avoid damago to the delicate indicator needles.
X300 VSM 9 Issue 1 August 1994

IT Electrical
15.2.8 Odometer
With the ignition 'OFF' the odometer is permanently dis-
played but not illuminated. With the ignition 'ON' the odo- meter is displayed and also illuminated.
Trip information or driver information messages may be dis
-
played instead of the 'ODO'. By pressing the 'ODO' button
once or twice the trip and driver information messages can
be deleted and the
'ODO rdisplayed.
W. The odometer value is not stored within the LCD
module.
15.2.9 Trip Computev
This provides information on the vehicle's speed, fuel usage
and distance traveled
all of which are calculated by a micro
processor.
The controls, part of the fascia switch assembly, are located
on the right
-hand side pod positioned to the right-hand side
of the steering column.
I
/
J86-192L
Fig. 1
15.2.10 Driver Information Messages
Two fault messages, FLUID - AIRBAG are displayed via the LCD in conjunction with relevant warning lamps.
If an
airbag fault exists or the brake fluid is low, a message will automatically be displayed on the LCD and the relevant
warning lights illuminated. Should both faults exist at the same time, each message is displayed alternatively for ap
- proximately 2 seconds.
Messages may becancelled
by pressing the 'ODO button which allowsthe LCD to return to its last displayed message.
The warning lamps will not be extinguished. If the fault is not repaired the message(s) and the warning lamp(s) will
be redisplayed when the ignition is switched on.
15.2.11 /llumination
Warning indicator lamp illumination is controlled by a microprocessor located inside the instrument panel.
The seven right
-hand warning indicators are primary warning lamps illuminating 'RED and the seven left-hand warn-
ing indicators are secondary warning lamps illuminating 'AMBER'
The eight lower lamps are
a mixture of status and warning lamps.
With the ignition
'OFF' the LCD is not illuminated.
With ignition
'ON' and side lights 'OFF' the LCD is illuminated at maximum brightness.
With the ignition on and side lights
'OFF' the LCD is dimmed as are the gauges.
The long
life type bulbs are enclosed by orange and brown coloured bulb holders which must never be interchanged.
Replacement bulbs must always be of the same colour.
CAUTIQN: Always dwonnect the battery ground lead before commencing with any instrument rsimwal procedure.
15.2.12 General Repair Notes
0 After lens removal do not rest instrument panel face down as this causes damage to the delicate gauge needles.
Avoid scratching the gauge faces and ensure cleanliness when handling the panel.
0 To minimize the risk of damage and contamination to the instrument panel, all repairs must be carried out in a non - static and dust -free environment. Avoid touching connector pins and pcb components to minimize
risk of static damage.
0 The instrument panel has two different types of bulb holders each of which must be located correctly when
changing the bulbs.
Issue 1 August 1994 10 X300 VSM

15.5.8 wific Gravity Test
The specific gravity of the electrolyte determines the level of the float in the liquid. With the float in a high position
the specific gravity is high and when the specific gravity is low the float sinks to the lower position.
Using
a hydrometer the specific gravity readings are taken when the liquid level crosses the scale on float. This should
give a accurate indication of the state charge of the battery.
The volume and the specific gravity of the electrolyte varies with the change in temperature.
15.5.9 Electrolyte Temperature Correctkm
For every 10- below 15% subtract 0.007 from the hydrometer reading, and for every 10°C above 15OC add 0.007 to
the hydrometer reading.
Note: Use only distilled water for topping up electrolyte. The electrolyte must not exceed 51.66OC during charging.
If after 30 minutes charging the battery current is not equal or greater than 3A, dispose of the battery.
15.5.10 Heahh and Sakty Precautions
As batteries contain sulphuric acid and explosive mixtures of hydrogen and oxygen gases, it is strongly recommended
that protective clothing is worn.
Avoid spilling acid to prevent damage to clothing and skin bums.
If accidentalty spilled or splashed on clothing or skin, rinse with cold water. As a neutralizer, a solution of baking soda
or ammonia and water may be used.
In the event of skin or eye contact rinse the affected areas with water and should this not
be sufficient seek medical
attention.
Any trace of acid spilled or splashed on the vehicle should be rinsed with clean water.
BEFORE AND WHILST WORKING WITH THE BATTERY BE AWARE OF THE FOLLOWING SAFETY PRECAUTIONS
o particularly during charging, highly explosive hydrogen is emitted.
0 do not smoke when working near the battery.
o avoid sparks, short circuits or other sources of ignition.
o switch off current before connecting or disconnecting any electrical terminals.
o always disconnect battery ground lead first and reconnect last.
o ensure battery is charged in a well ventilated area.
o switch off the charger before disconnecting.
WARNING: WHEN PREPARING ELECTROLYTE OF A DESIRED SPECIFIC GRAVITY, ALWAYS POUR THE
CONCENTRATED ACID SLOWLY INTO THE WATER AND NOT WATER INTO THE ACID.
HEAT IS GENERATED WHEN MIXING ACID WITH WATER, HENCE ADD SMALL AMOUNTS OF ACID AND
STIR SLOWLY INTO THE WATER. ALLOW TO COOL IF NOTICEABLE HEAT DEVELOPS. EXCEPT FOR LEAD
DO NOT STORE ACID
IN EXCESSIVELY WARM LOCATIONS OR DIRECT SUN LIGHT.FUEL VAPOUR IS EXTREMELY FLAMMABLE, HENCE GREAT CARE MUST BE TAKEN WHILST WORKING ON THE FUEL
SYSTEM. LINED
CONTAINERS, ALWAYS USE NON
- METALLIC CONTAINERS AND / OR FUNNELS.
Issue 1 August 1994 14 X300 VSM