Jaguar X-Type Sedan and Estate (Wagon). Service manual — part 14
Term(s)
Acronym / Unit /
Abbreviation
Definition
Heated Oxygen Sensor
HO2S
Electrically heated oxygen sensor which induces fueling corrections
Hertz (frequency)
Hz
Frequency, one cycle per second
High Mounted Stoplamp
HMSL
High tension
HT
Hour
hour
Hydrocarbon
HC
Idle Air Control
IAC
Stepper motor driven device which varies the volume of air by-passing the throttle to
maintain the programmed idle speed
Ignition amplifier
IA
Device which amplifies the ignition system output
Ignition ground
IGN GND
Injection Pressure Sensor
IPS
Inertia Fuel Shut-off
IFS
An inertia system that shuts off the fuel supply when activated by pre-determined force
limits brought about by (e.g.) collision
Inertia Fuel Shut-off Switch IFS Switch
Shuts down fuel and ignition systems in the event of a vehicle impact
Intake air
Air drawn through a cleaner and distributed to each cylinder for use in combustion
Intake Air Temperature
IAT
Temperature of intake air
Intake Air Temperature
Sensor
IAT Sensor
Device used to measure IAT
Intake Air Temperature
Sensor Ignition
IAT Sensor Ignition
Thermistor which signals the ECM to retard the ignition timing in response to high inlet air
temperatures
Intake Air Temperature
Sensor Injection
IAT Sensor Injection Thermistor which inputs air density information to the ECM
Internal diameter
i.dia
International Standards
Organisation
ISO
Kilogramme (mass)
kg
Kilogramme (force)
kgf
Kilogramme force per
square centimeter
kgf/cm²
Kilometer
km
Kilometer per hour
km/h
Kilopascal
kPa
Kilovolt
kV
Knock Sensor
KS
Sensor which detects the onset of detonation, and signals the ECM to retard the ignition
Left-hand
LH
Left-hand drive vehicle
LHD
Left-hand thread
LHthd
Liquid Crystal Display
LCD
Optical digital display system, applied voltage to which varies the way the crystals reflect
light, thereby modifying the display
Litre
L
Low Tension
LT
Primary circuit of the ignition system, linking the battery to the primary winding in the
ignition coil
Malfunction Indicator Lamp MIL
A required on-board indicator to alert the driver of an emission related malfunction
Manifold Absolute Pressure MAP
Absolute pressure of the intake manifold air
Manifold Absolute Pressure
Sensor
MAP Sensor
Sensor located in the ECM and ported to the intake manifold
Manifold Surface
Temperature
MST
Mass Air Flow
MAF
System which provides information on the mass flow rate of the intake air to the engine
Mass Air Flow Sensor
MAF Sensor
Hot-wire sensor which monitors air flow into the intake manifold for fueling and ignition
control
Maximum
max.
Meter (measurement)
m
Metric (screw thread, e.g.
M8)
M
Microfarad
MFD
Unit of electrical capacitance, one millionth of a farad
Millimeter
mm
Millimeter of mercury
mmHg
Millisecond
ms
Minimum
min.
Minute
minute
Model year
MY
Motorized In-Car Aspirator MIA
Device which constantly samples cabin temperature by passing air over a sensor, and
communicates with the A/CCM to modify A/C system performance to suit
Multi Protocol Adapter
MPA
An interpreter for the various data languages present on a vehicle
National Institute of
Occupational Safety and
Health (US)
NIOSH
Newton
N
SI unit of force. 1 N = 0.2248 pounds force
Newton Meter
Nm
SI unit of torque. Must not be confused with nm (nanometer)
Nox
Compounds of nitrogen and oxygen formed at high temperatures. Major source of
exhaust-gas air pollution
Non-Volatile Random
Access Memory
NVRAM
RAM which retains memory even if power supply is interrupted
Normally aspirated
N/A
Fueling system using intake air at atmospheric pressure; not supercharged or
turbocharged
Normally Closed
NC
Normally Open
NO
North American
Specification
NAS
Vehicles for sale in the USA and Canadian markets
Number
No.
Occupational Safety and
Health Administration (US)
OSHA
Term(s)
Acronym / Unit /
Abbreviation
Definition
On-Board Diagnostic
OBD
A system that monitors some or all computer input and output control signals. Signal(s)
outside the pre-determined limits imply a fault in the system or a related system
Original Equipment
Manufacturer
OEM
Outside Diameter
o. dia
Oxides of nitrogen
Nox
Oxygen Sensor
O2S
A sensor which detects oxygen content in the exhaust gases
Parameter Identification
PID
An index number referring to a parameter within a module without knowledge of its
storage location
Park Neutral Position
PNP
Park Neutral Position
Switch
PNP Switch
Indicates the selected non-drive modes of the (automatic) transmission
Part number
part no.
Pulse W idth Modulated
PWM
Programmable Electronic
Control Units System
PECUS
Process whereby a common ECM is programmed on the production line to suit the market
requirements of a particular vehicle
Programmable Read-only
Memory
PROM
ROM with some provision for setting the stored data after manufacture
Random Access Memory
RAM
Fast access memory store which is accessible for entry or extraction of data
Read-Only Memory
ROM
Fast access memory in which data is fixed and may not be changed
Reservoir
RES
Container, usually for oils, coolants or hydraulic fluids
Rest Of The World
ROW
Return
RTN
A dedicated sensor ground circuit
Revolutions Per Minute
RPM
Shaft speed of a device, usually an engine or motor
Right-hand
RH
Right-hand drive
RHD
Scan Tool
ST
Device that interfaces with and communicates information on a data link
Seat Control Module
SCM
Module controlling the seat motor systems (not electric raise/lower-only seats)
Secondary Air
Air provided to the exhaust system
Secondary Air
AIR
System used for a period of time each time the engine is started, unless certain
temperature criteria are met. Pumps air directly into the exhaust system which generates
extra heat and reduces the time taken for the catalytic converters to reach operating
temperature
Secondary Air Injection
Bypass
AIR Bypass
Vents secondary air to atmosphere
Secondary Air Injection
Check Valve
AIR Check Valve
Valve which prevents back-flow of exhaust gas to the AIR system when the system is
inoperative
Secondary Air Injection
Diverter
AIR Diverter
Diverts secondary air to either the catalyst or exhaust manifold
Secondary Air Injection
Magnetic Clutch
AIR Clutch
Clutch mounted on the AIRP drive shaft
Secondary Air Injection
Pump
AIR Pump
Mechanically driven rotary vane pump, driven through the AIRPC
Secondary Air Injection
Relay
AIR Relay
Controls the injection of air into the exhaust system
Secondary Air Injection
Switching Valve
AIR Switching Valve Vacuum operated valve backing-up the AIRC
Security & Locking Control
Module
SLCM
Module controlling the vehicle's security and closure-locking functions
Sensor
S
Generic name for a device that senses either the absolute value or a change in a physical
quantity such as temperature, pressure or flow rate, and converts that change into an
electrical quantity signal
Service Repair Operation
(number)
SRO
Number generated by Jaguar Methods & Techniques system which relates to the time
allowed to complete a repair operation. Further information on the system can be found in
the separate Jaguar Publications (for each model range) entitled 'Repair Operation Times'
Shift Solenoid
SS
Controls shifting in an automatic transmission
Signal return
SIG RTN
Sliding Roof Control Module SRCM
Society of Automotive
Engineers
SAE
Speed Control Control
Module
SCCM
Module controlling Speed Control System
Square centimeter
cm²
Standard
std
Standard Corporate
Protocol
SCP
A high-speed, serial communications system linking all body system control modules.
Control messages and data are passed between modules at up to 786 messages per
second
Supercharger
SC
An intake system which utilizes a supercharger (mechanically driven device that
pressurizes intake air, thereby increasing density of charge air and the consequent power
output from a given displacement)
Supercharger Bypass
SCB
Tachometer
TACH
A circuit that provides input for an electronic tachometer display
Thermal Vacuum Valve
TVV
Controls vacuum levels or routing based on temperature
Throttle Body
TB
Device containing the throttle
Throttle Position
TP
Throttle Position Sensor
TP Sensor
Interprets throttle position and movement to identify idle, acceleration and full-power
demands
Throttle Manifold Absolute
Pressure Sensor
TMAP
Combines the inlet air temperature and manifold pressure sensor in one component
Top Dead Center
TDC
Torque Converter Clutch
TCC
Transmission Control
Module
TCM
Controls the shifting pattern of the (automatic) transmission
Transmission Control
Switch
TCS
Modifies the operation of electronically controlled transmissions
Term(s)
Acronym / Unit /
Abbreviation
Definition
Transmission Oil
Temperature
TOT
Indicates temperature of transmission fluid
Transmission Range
TR
The range in which the transmission is operating
Turbine Shaft Speed
TSS
Indicates rotational speed of transmission output shaft or turbine shaft
Vacuum Solenoid Valve
VSV
Vacuum operated valve used in the speed control system
Vacuum Solenoid Valve
(atm)
VSV(VA)
Vacuum atmospheric valve used in the speed control system
Vacuum Solenoid Valve
(rel)
VSV(VR)
Vacuum release valve used in the speed control system
Vacuum Solenoid Valve
(vac)
VSV(VV)
Vacuum valve used in the speed control system
Variable Valve Timing
VVT
A system by which the relationship of the crankshaft and camshaft may be altered during
engine running
Vehicle Battery Adapter
VBA
Provides electrical power to the Jaguar approved diagnostic system and supplies a battery
reference level
Vehicle Control Monitor
VCM
Instrument panel display which warns of faults
Vehicle Emission Control
Information Label
VECI Label
Vehicle Identification
Number
VIN
Number assigned to the vehicle by the manufacturer, primarily for licensing and
identification purposes
Vehicle Interface Adapter
VIA
Extends the Jaguar approved diagnostic system capability and provides a parallel interface
to vehicle harnesses and ECMs
Vehicle Speed Sensor
VSS
Sensor which provides vehicle speed information
Viscosity Index
VI
Voltage Regulator
VR
Device which regulates the variable output voltage of a generator
W att
W
SI unit of power (1 hp = 745.7 watts)
W ide Open Throttle
W OT
Full throttle position
Published: 11-May-2011
General Information - Health and Safety Precautions
Description and Operation
Prolonged and repeated contact with mineral oil will result in the removal of natural oils from the skin, leading to dryness, irritation and
dermatitis. In addition, used engine oil contains potentially harmful contaminants which may cause skin cancer. Washing facilities and
adequate means of skin protection should be provided.
Observe these recommendations:
Wear protective clothing, including impervious gloves where practicable.
Do not put oily rags in pockets. Avoid contaminating clothes, particularly underwear, with oil.
Overalls must be cleaned regularly. Discard oil impregnated clothing and footwear which cannot be washed or cleaned.
First Aid treatment should be obtained immediately for open cuts or wounds.
Use barrier creams, applying before each work period, to enable easier removal of dirty oil and grease from the skin.
Wash with soap and water to make sure that all oil is removed (skin cleaner and a nail brush will help). The use of preparations
containing lanolin will help to replace the natural skin oils which have been removed.
Do not use petrol, kerosene, gas oil, thinners or solvents for washing skin.
If skin disorders develop, obtain medical advice immediately.
Where practical, degrease components prior to handling.
Where there is a risk of fluids coming into contact with the eyes, eye protection should be worn, for example, goggles or a face
shield. An eye wash facility should be provided.
The Health and Safety Precautions subsection refers to some commonly used chemicals and materials, hazards associated with their use,
and safety measures to be taken. Some of these chemicals may be included in the following list either in their own right or as an ingredient
in a sealer or adhesive.
Acids and Alkalis
See also Battery Acids.
e.g. caustic soda, sulphuric acid.
Used in batteries and cleaning materials.
Irritant and corrosive to the skin, eyes, nose and throat. Cause burns. Can destroy ordinary protective clothing.
Avoid splashes to the skin, eyes and clothing. W ear suitable protective impervious apron, gloves and goggles. Do not breath mists.
Ensure access to eye wash bottles, shower and soap are readily available for splashing accidents.
Display Eye Hazard sign.
Air Bags
See also Fire, Chemical Materials - General
Highly flammable, explosive – observe No Smoking policy.
Used as a safety restraint system mounted in the steering wheel.
The inflator contains a high - energetic propellant which, when ignited, produces a VERY HOT GAS (2500º C).
The gas generant used in air bags is Sodium Azide. This material is hermetically sealed in the module and is completely consumed during
deployment. No attempt should be made to open an air bag inflator as this will lead to the risk of exposure to Sodium Azide. If a gas
generator is ruptured, full protective clothing should be worn when dealing with the spillage.
After normal deployment, gloves and safety goggles should be worn during the handling process.
Deployed air bags should be disposed of in a plastic bag in accordance with local regulations at an approved chemical waste site.
Following any direct contact with gas generant.
Wash affected areas thoroughly with water.
Seek medical assistance if necessary.
Air Bags - Do's
Do store in an airbag safe when not fitted to the vehicle.
Do store modules in an upright position.
Do keep modules dry.
Do carry modules with the cover side pointing away from the body.
Do place modules with their cover side upwards.
Do carefully inspect modules for damage.
Do stand to one side when connecting modules.
Do make sure all test equipment is properly calibrated and maintained.
Do wash you hands after handling deployed air bags.
Air Bags - Do Nots
Do not store highly flammable material together with modules or gas generators.
Do not store gas generators at temperatures exceeding 80º C.
Do not store modules upside down.
Do not attempt to open a gas generator housing.
Do not expose gas generators to open flame or sources of heat.
Do not place anything on top of a module cover.
Do not use damaged modules.
Do not touch a fired module or gas generator for at least 10 minutes.
Do not use any electrical probes on the wiring circuit.
Air Conditioning Refrigerant
See also Chlorofluorocarbon, Chemical Materials
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