ignition JAGUAR XJ6 1994 2.G Workshop Manual

Terrn(s1 Abbreviation Definition Previously used (if applicable) term(s) (or Eng- lish Eauivalentl
5
Babbitt metal
backlight
back
-up lamp
balk ring
t
battery positive Voltage B+
Barometric Absolute Pressure BARO
Sensor
base Idle
base timing
battery
before bottom dead center BBDC
before top dead center BTDC
blower BLR
Body Processor Module BPM
British Standards BS
I British Standards Automotive BSAu
brake horsepower
brake mean effective pressure BMEP
brake
ontoff BOO
brake rotor
I bottom dead center BDC
bypass air BPA
bumper guard
I
bushing I
rotating component of manual transmission
which prevents premature engagement of
gears
The positive Voltage from
a battery or any
circuit connected directly to it.
sensor measuring the pressure of
surrounding air at any given temperature
and altitude
Idle
rpm determined by the throttle lever
being hard
-set on the throttle body with the
IAC solenoid disconnected
Spark advance in degrees before top dead
center of the base engine without any control
from the PCM
Electrical storage device producing DC
Voltage by means of electrochemical
reaction
event occurring before BDC
event (usually ignition) occurring before TDC
Device which supplies a current of air at
moderate pressure, e.g. heater or
AJC blower
Control module for body electrical systems,
e.g. interior lamps, windshield wash wipe
control etc..
standard specification issued by the British
Standards Institution
effective horsepower developed by an
engine or motor, as measured by a brake
applied to its output shaft
that part of the effective pressure developed
in a cylinder that would result in a cylinder
output equal to the bhp of the engine
indicates the position of the brake pedal
process of bedding
-in the internal working
surfaces of e.g. an engine by avoiding excess
build
-up of heat
lowest point of piston travel in a
reciprocating engine
mechanical control of throttle bypass air
cylindrical plain bearing white
metal
backlight,
rear screen reversing lamp
baulk ring
B+,
+ve, VSS
BARO, APS
CCM (Central
Control Module).
CPU
brake disc
running
-in
overrider bush
Issue 1 August 1994 8 X300 VSM

Term(s) Abbreviation Definition (if applicable)
direct current dc current which flows in one direction only,
though it may have appreciable pulsations in
its maanitude
disk. disc
I I
Distributor Ignition DI
Distributor Ignition Cap DIC
Distributor Ignition Carbon Brush
DlCB
Distributor Ignition Leads DIL
Distributor Ignition Rotor Arm
DlRA
Previously used term(s) (or Eng- lish Equivalent)
disc
distributor
distributor cap
distributor car
-
bon brush
distributor leads
distributor rotor
arm
X300 VSM Issue 1 August 1994 12

Introduction
Term(s) Abbreviation Definition Previously used (if applicable) term(s) (or Eng
lish Equivalent)
i
1 Idle Air Control
1 Idle Air Control Valve
ignition amplifier
ignition ground
Inertia Fuel Shut
-off
Inertia Fuel Shut
-off Switch
1 intake
Intake Air
Intake Air Temperature Sensor
Ignition
Intake Air Temperature Sensor
Injection
internal diameter
International Standards Organiz
-
ation
I interrupter IAC
IACV
IA
IGN GND
IFS
IFSS
I AT
IATS
IATSI
IATSF
i.dia
IS0
electrical control of throttle bypass air
stepper motor driven device which varies the
volume of air by
-passing the throttle to
maintain the programmed idle speed
device which amplifies the ignition system
OUtDUt
an inertia system that shuts off the fuel
supply when activated by pre
-determined
force limits brought about by (e.g.) collision
shuts down fuel and ignition systems in the
event of a vehicle impact
air drawn through a cleaner and distributed
to each cylinder for use in combustion
temperature of intake air
device used to measure IAT
thermistor which signals the ECM to retard
the ignition timing
in response to high inlet
air temperatures
thermistor which inputs air density
information to the ECM idle
speed con.
trol actuator, idle
air bypass con.
trol, idle speec
control valve
inertia switch
inlet
ACT,
airtempera. ture sensor, MAT:
ATSD, VAT, TBT
interruptor
Issue 1 August 1994 17 X300 VSM

Term(s) Abbreviation Definition Previously used (if applicable) term(s) (or Eng- lish Eauivalent)
K
kilogrammes (mass) kg
kilogrammes (force) kgf
kilogrammes force per square kgf/cm2 centimeter
kilometers
km kilometres
kilometers per hour
km/h km/h, kph
kilopascals
kPa
kilovolt kV
knock
I
the sharp metallic produced sound when two
pressure fronts collide in a combustion
1 chamber (see also ping)
I sensor which detects the onset of detonation I knock sensor KS I and signals the ECM to retard the ignition I
L
lash
left
-hand LH
left
-hand drive vehicle LH D
left-hand thread LH Thd
levelina
I
license I
license plate
liquid crystal display LCD
Liter
I L
louver
lowered beam
lug nut free
play, end-float
optical digital display system, applied
voltage to which varies the way the crystals
reflect liaht,
thereby modifvina the display
primary circuit
of the ignition system, linking
the battery to the primary winding in the
ignition coil levelling
licence
registration
plate,
number
date
Litre
louvre
diooed beam
wheel nut
Issue 1 August 1994 18 X300 VSM

- .. I lish Equivalent)
M
Malfunction Indicator Lamp MIL
Manifold Absolute Pressure MAP
Manifold Absolute Pressure Sen
- MAPS
sor
Manifold Surface Temperature MST
manual transmission,
M/T transmission
Mass Air Flow MAF
Mass Air Flow Sensor MAFS
maximum max.
metal inert gas MIG ~
meters (measurement) m
metric
(screw thread, e.g. M8) M
MFD I Microfarad
millimeters mm
millimeters
of mercury mmHg
minimum min.
minute minute
Model Year MY
Module
M
mold
Motorized In
-Car Aspirator MIA
muffler
multiport fuel injection MFI a required
on
-board indicator to alert the
driver of an emission related malfunction
absolute pressure of the intake manifold air
sensor located in the PCM and ported to the
intake manifold
transmission which is manually, externally
controlled
system which provides information on the
mass flow rate of the intake air to the engine
hot
-wire sensor which monitors air flow into
the intake manifold for fueling and ignition
control
electric welding system in which a stream of
inert gas
shielbs~the electrode, preventing
oxidation
unit of electrical capacitance, one millionth of
a farad
self contained group of electrical/electronic
components which is designed as a single
replaceable unit
device which constantly samples cabin
temperature by passing air over a sensor,
and communicates with the
NCCM to modify
NC system performance to suit
device which causes exhaust gas flow to
expand and thereby reduce its pressure and
hence its noise fuelling failure
gearbox
air flow meter
metres
min.
mould
motorized aspi
-
rator
silencer ~~
X300 VSM 19 Issue 1 August 1994

(if applicable) term(s) (or Eng-
lish Equivalent)
paragraph para
parking brake
Park Neutral Position PNP
Park Neutral Position Switch PNPS
Dart number I Dartno.
I pin boss
ping, pinging
piston pin
(also wrist pin)
power assisted steering
power steering pressure
. powertrain
program
Droaramable or Droarammable I
Droaramed or Droarammed I
Droaramer or Droarammer I
programing or programming
Programmable Electronic Control
I PECUS
Units System
I Programmable Read-only Mem- I PROM
on/ Prussian blue
Pump
purge cock I
indicates the selected non-drive modes of
the (automatic) transmission
boss in the piston wall (two per piston) which
is bored to
accept one end of the piston pin
metallic pinging sound caused by detonation
in the combustion chamber, usually caused
by incorrect grade of fuel (too low octane) or
over
-advanced ignition timing (see also knock)
pin which connects the connecting rod to the
piston, and permits articulation between the
two.
hvdraulic
DumD-assisted steerina svstem
the elements of
a vehicle by which motive
power is generated and transmitted to the
driven axle
sequence of events to be performed by
a
control module/comDuter
process whereby a common ECM is programmed on the production line to suit
the market requirements of
a particular vehicle
ROM with some provision for setting the
stored data after manufacture
device used to raise, transfer, or compress
fluids by suction, pressure or both handbrake
NDS, NGS, TSN,
gearbox sensor
piston pin boss
pinking
gudgeon pin
Dower steerina
drive line
programme, pro
-
gram
programmable
programmed
programmer
programming
enaineer's blue
drain plug, drain
tap
Issue 1 August 1994 X300 VSM 21

2.2 VEHICLE RECOVERY
8 2.2.1 General
m: Prior to vehicle recovery, always ensure the vehicle
keys are available and the vehicle security system is
'OFF'.
The safest and preferred method of vehicle recovery is by
flat bed transporter, although a rear suspended tow may
also be used.
The front and rear towing eyes are provided for use only in
an emergency to move the vehicle
if it is causing an
obstruction, on police instructions, or, when winching the
vehicle onto a recovery transporter.
m: A towing shackle cannot be fastened to the front
towing eye until the grille vane has been removed.
To do this, remove the (three) quarter
-turn fasteners
securing the grille vane (Fig. I), and place the vane
safely to one side. The towing shackle may now be
secured to the towing eye.
0 When thevehicle is being towed (see Towing Recovery), the
gear lever must be set to neutral, 'N' (see Gear-shift Inter- lock) and the ignition key turned to position 'II'to release the
steering lockand renderthe indicators, horn and brake lights
operational.
2.2.2 Gear-shift Interlock
The gear selector lever may only be moved from the park 'F" position by turning the ignition key to position '11' on the key
switch and applying pressure to the footbrake pedal.
To remove the ignition key from the key switch, the gear
selector lever must be moved to park
'P. With the key removed, the gear selector lever will be locked
in park
'P'.
2.2.3
In the event of electrical failure or when moving the vehicle
without power, the gear selector lever can be manually
unlocked from park
'P'. Below the left-hand side of the 'J' gate (Fig. Z), is the gear- shift interlock manual release catch. With a flat bladed
screwdriver, remove the plug, arrowed (Fig. 2). Insert
ignition key and press down catch whilst simultaneously
moving the gear
-shift lever from 'P' position.
Gear-shift Interlock - Manual Override
U: Gear-shift lever can only be moved approximately
25mm with the key still inserted.
Remove key and replace plug. Fig.
1
Fin. 2

Jacking, lifting & Vehicle Recovery gg
2.2.7 Suspended Towing
CAUTION: Do not tow with sling-type equipment as damage to the bodywork may result. Do not front suspend tow vehides with automatic transmission.
2.2.8 Rear Suspended Tow
Remove the ignition key from the ignition /steering lock.
. Raise the vehicle using a lifting device with a cradle. This should be positioned under each rear wheel as indicated
in Fig. 1.
0
0
0
J08-026
Fig. 1
Issue 1 August 1994 5 X300 VSM

3.1.1 ENGINE, GENERAL
The 3.2 /4,0 liter normallv aspirated
and the 4.0
Engine (AJ16)
liter supercharged engined vehicles are equipped with the AJ 16family of six cylinder in-line engines. The engines have a fully mapped engine management system with digital ignition and
individual on-plug ignition coils.
This section describes the service procedures to be carried out with the engine in situ.
It also covers the renewal of the engine / transmission unit.
For information relating to strip
-down, inspection, fault diagnosis, renovation and rebuild work, refer to the AJ16
Engine Service Manual.
X300 VSM 1 Issue 1 August 1994

Engine (V12)
3.2.1 ENGINE, GENERAL
The twelve cylinder, vee formation engine has a capacity of 6.0 liters. Each cylinder bank has a single overhead
camshaft and two valves percylinder. The engine has a fully mapped engine management system with digital ignition
and two ignition coils.
This section describes the service procedures to be carried out with the engine in situ.
It also covers the renewal of
the engine / transmission unit.
For information relating
tostrip-down, inspedion,fault diagnosis, renovation and rebuild work, referto the VI2 Engine
Service Manual.
X300 VSM 1 Issue 1 August 1994