Jaguar XJ (X350). Manual — part 19

EGR Valve

Position

EVP

An EGR system that directly monitors

EGR valve position to control EGR flow

Electrically

Erasable

Programmable

Read-Only Memory

EEPROM

Electrically

Programmable

Read-Only memory

EPROM

Electronic

Secondary Air

Injection

EAIR

A pump-driven system for providing

secondary air using an electric air pump

Engine Control

Module

ECM

Engine Coolant

Level

ECL

Engine Coolant

Temperature

ECT

ECT Sensor

ECTS

Thermistor which provides engine

coolant temperature signal to the ECM

to trigger enrichment circuits which

increase injector 'on' time for cold start

and warm-up

Engine speed

RPM

Environmental

Protection Agency

EPA

Evaporative

Emission

EVAP

System designed to prevent fuel vapor

from escaping into the atmosphere.

Typically includes a charcoal filled

canister to absorb fuel vapor

Evaporative

Emission Control

Valve

EVAPP

Exhaust Gas

Recirculation

EGR

System which reduces NOx emissions

by adding exhaust gases to the

incoming fuel/air charge

Exhaust Gas

Recirculation

Solenoid Vacuum

Valve

EGRS

Exhaust Gas

Recirculation

Temperature

Sensor

EGRT Sensor

Exhaust Gas

Recirculation Valve

EGR Valve

Fan Control

FC

Engine cooling fan control

Federal Motor

Vehicle Safety
Standard (US)

FMVSS

Figure

Fig.

Illustration reference

Flash Electrically

Erasable

Programmable

Read-Only Memory

FEEPROM

Flash Erasable

Programmable

Read-Only Memory

FEPROM

Flywheel Sensor

CKFS

Sensor mounted so as to be triggered

by each flywheel ring gear tooth to give

an engine speed signal

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Fuel Injection

FI

Solenoid operated devices that spray a

metered quantity of fuel into the inlet

ports

Fuel Pressure

Regulator Control

FPRC

Controls fuel pressure regulator; used

primarily to give extra fuel at cold start-

up

Fuel Pump

FP

Pumps fuel from the fuel tank to the fuel

injection system

Fuel Pump Monitor

FP Module

Monitors operation of fuel pump

Fuel Pump Relay

FP Relay

Relay which controls electrical current

to fuel pump

Fuel rich/lean

Qualitative evaluation of air/fuel ratio

based on a ratio known as

stoichiometry,or 14.7:1 (Lambda)

Generic Electronic

Module

GEM

Generator

GEN

Rotating machine which converts

mechanical energy into electrical

energy

Gramme

centimeter

gcm

Gramme (force)

gf

Gramme (mass)

g

Ground

GND

Electrical conductor used as a common

return for an electrical circuit or circuits,

and with a relative zero potential

Hard fault

A fault currently present in the system

Headlamp

HL

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

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