Abbreviations and Symbols

A Amperes
AAP Ambient Air Pressure
AAT Ambient Air Temperature
ABDC After Bottom Dead Center
ABS Anti-Lock Brake System
ABS/TC Anti-lock Brake System/Traction Control
ac Alternating current
A/C Air Conditioning
ACE Active Cornering Enhancement
ACEA Association of Constructors of European Automobiles
AFR Air Fuel Ratio
AP Ambient Pressure
ASC Anti-shunt Control
ATC Air Temperature Control
ATDC After Top Dead Center
ATF Automatic Transmission Fluid
AUX Auxiliary
AVC Automatic Volume Control
BBDC Before Bottom Dead Center
BBUS Battery Backed Up Sounder
BCU Body Control Unit
BDC Bottom Dead Center
bhp Brake Horse Power
BP Boost Pressure
BPP Brake Pedal Position
BS British Standard
BTDC Before Top Dead Center
BUS Databus
BWD Backward
C Celsius
CAN Controller Area Network
Cav Cavity
Cct Circuit
CCU Central Control Unit
CD Compact Disc
CDC Center Differential Control
CDL Central Door Locking
CD - ROM Compact Disc - Read Only Memory
CFC Chlorofluorocarbon
CHMSL Center High Mounted Stop Lamp
CKP Crankshaft Position
CLV Calculated Load Value cm Centimeter
Sq cm Square centimeter
cubic cm Cubic centimeter
CMP Camshaft Position
CPP Clutch Pedal Position
CO Carbon Monoxide
C02 Carbon Dioxide
COB Clear Over Base
Col Colour
CR Common Rail
CVS Canister Vent Solenoid
dB Decibels
DDM Driver's Door Module
deg. Degree, angle or temperature
DI Direct Injection
dia. Diameter
DIN Deutsche Industrie Normen (German Industrial Standards)
dc Direct current
DCUEB Diagnostic Control Unit
DCV Directional Control Valve
DOHC Double Overhead Camshaft
DSP Digital Signal Processing
DTI Dial Test Indicator
DMF Dual Mass Flywheel
DVD Digital Versatile Disc
EACV Electronic Air Control Valve
EAT Electronic Automatic Transmission
EB Electronic Brake pressure Distribution
EBD Electronic Braking Force Distribution
ECD European Community Directive
ECM Engine Control Module
ECT Engine Coolant Temperature
ECU Electronic Control Unit
EDC Electronic Diesel Control
EEPROM Electronic Erasable Programmable Read Only Memory
EGR Exhaust Gas Recirculation
EKA Emergency Key Access
ELR Emergency Locking Retractor
EN European Norm
EOBD European On Board Diagnostics
EON Enhanced Other Network
ERL Electrical Reference Library
ETC Electronic Traction Control
EUI Electronic Unit Injector
EVAP Evaporative Emission
EVR Electronic Vacuum Regulator
F Fahrenheit
ft. Feet
F Fuse
FBH Fuel Burning Heater
FET Field Effect Transistor
FIP Fuel Injection Pump
FL Fusible Link
FTC Fast Throttle Control
FWD Forward
> Greaterthan
g gram or Gravity
gal. Gallons
GMT Greenwich Mean Time
GPS Global Positioning System
h Hour
hc High compression
HC Hydro Carbons
HDC Hill Descent Control
HDOP Height Dilation Of Precision
HDPE High Density Polyethylene
HFS Heated Front Screen
Hg Mercury
H02S Heated Oxygen Sensor
HMW High Molecular Weight
HRW Heated Rear Window
ht/HT High tension
HSLA High Strength Low Alloy
IACV Idle Air Control Valve
IAT Intake Air Temperature
ICE In-Car Entertainment
i.dia. Internal diameter
IDM Intelligent Driver Module
IF Intermediate Frequency
in Inch
sq in Square inch
cubic in Cubic inch
ILT Inlet Throttle
ISO International Organization for Standardization
ITS Inflatable Tubular Structure
k hThousand
kg Kilogram
kg/h kilograms per hour
km Kilometer
km/h Kilometers per hour
kPa KiloPascal
KS Knock Sensor
< Less than
l Liter
lb(s) Pounds
lbf Pounds force
lbf.in Pounds force inches
lbf/Sq in Pounds per square inch
lbf.ft Pounds force feet
Lambda Lambda
lc Low compression
LCD Liquid Crystal Display
LED Light Emitting Diode
LEV Low Emission Vehicle
LH Left-Hand
LHD Left-Hand Drive
LSM Light Switch Module
LVS Liquid Vapor Separator
m Meter
Micro Micro
MAF Mass Air Flow
MAP Manifold Absolute Pressure
MFU Multi-Function Unit
MFL Multi-Function Logic
max. Maximum
MEMS Modular Engine Management System
MIG Metal/Inert Gas
MIL Malfunction Indicator Lamp
MPa MegaPascal
MOSFET Metal Oxide Semiconductor Field Effect Transistor
min. Minimum
- Minus (tolerance)
' Minute (angle)
mm Millimeter
mph Miles per hour
MPi Multi-Point injection
MV Motorized Valve
MY Model Year
NAS North American Specification
(-) Negative (electrical)
Nm Newton meter
No. Number
N02 Nitrogen Dioxide
NOx Oxides of Nitrogen
NTC Negative Temperature Coefficient
NRV Non Return Valve
OBD On Board Diagnostics
OBM On Board Monitoring
o.dia. Outside diameter
OAT Organic Acid Technology
ORM Off-road Mode
Ohm Ohm
PAS Power Assisted Steering
PCB Printed Circuit Board
PCV Positive Crankcase Ventilation
PDC Parking Distance Control
PDOP Position Dilation Of Precision
P1 Program Information
PPS Pulse Per Second
PS Program Service
psi Pounds per square inch
pts. Pints
% Percentage
+ Plus (tolerance) or Positive (electrical)
± Plus or minus (tolerance)
PTC Positive Temperature Coefficient
PTFE Polytetrafluorethylene
PWM Pulse Width Modulation
RDS Radio Data Service
r Radius
: Ratio
ref Reference
R Relay
REG Regionalization
RES Rover Engineering Standards
rev/min Revolutions per minute
RF Radio Frequency
RGB Red/Green/Blue
RH Right-Hand
RHD Right-Hand Drive
ROM Read Only Memory
RON Research Octane Number
ROV Roll Over Valve
ROW Rest Of World
SAE Society of Automotive Engineers
SAI Secondary Air Injection
" Second (angle)
SLABS Self Levelling and Anti-Lock Brake System
SLS Self Levelling Suspension
SOHC Single Overhead Camshaft
SPE Single Point Entry
sp.gr Specific gravity
SRS Supplementary Restraint System
std. Standard
synchro Synchronizer or synchromesh
TA Traffic Announcement
TDC Top Dead Center
TM Thermostat Monitoring
TMAP Temperature, Manifold Absolute Pressure
TMC Traffic Management Channel
TP Throttle Position
TPS Throttle Position Sensor
TV Torsional Vibration
TWC Three-way Catalyst
TXV Thermostatic Expansion Valve
UK United Kingdom
US United States
US galls/h US gallons per hour
V Volt
Var. Variable
VDOP Velocity Dilation Of Precision
VICS Vehicle Information Communications System
VIN Vehicle Identification Number
VIS Variable Intake System
VRS Variable Reluctance Sensor
VSS Vehicle Speed Signal
W Watt
WOT Wide Open Throttle