Acronyms Abbreviations and Symbols

A - Ampere(s)

A-h - Ampere Hour

A/T – Automatic Transmission

ABS – Anti-Lock Brakes

AC - Alternating Current

A/C - Air Conditioning

ACCEL - Accelerator

AIR - Air Injection Reaction System

ALDL - Assembly Line Diagnostic Link

Alt. – Alternator

AMP - Ampere(s)

ANT - Antenna

ASM - Assembly

AT - Automatic Transmission

ATDC - After Top Dead Center

ATF – Automatic Transmission Fluid

Auto - Automatic

AWD – All Wheel Drive

BARO - Barometric

Bat - Battery

Bat + - battery Positive Terminal

bbl - Barrel

BCM – Body Control Module

BDC - Bottom Dead Center

BS - Bump Stop (aka Jounce Bumper)

BP - Back Pressure

BTDC - Before Top Dead Center

BTU – British Thermal Unit

CARB - California Air Resources Board

Carb. - Carburetor

Calif. - California

CAT or Cat. Conv. - Catalytic Converter

CCA - Cold Cranking Amps

CID - Cubic Inch Displacement

CKP - Crank Position Sensor

CL - Closed Loop

CO - Carbon Monoxide

CMP - Camshaft Position Sensor

CO2 - Carbon dioxide

CPI - Central Port Fuel Injection

Crank - Crankshaft

CTS - Coolant Temperature Sensor

DC - Direct Current

DIC – Driver Information Center

Diff - Differential

DIS – Direct Ignition System

Dist - Distributor

DLC - Diagnostic Link Connector

DOHC – Double Overhead Camshaft

DRL – Daytime Running Lamps

DVM - Digital Volt Meter

ECM – Engine Control Module

ECT – Engine Coolant Temperature

EFI – Electronic Fuel Injection

EGR – Exhaust Gas Re-circulation

EOP - Engine Oil Pressure

ESC - Electronic Spark Control

EST - Electronic Spark Timing

EVO - Electronic Variable Orifice

FI – Fuel Injection

FED - Federal (all states except California)

FWD – Front-Wheel Drive

GAL - Gallon

Gen - Generator

Gov - Governor

GPS – Global Positioning System

GVW – Gross Vehicle Weight

Harn - Harness

HD – Heavy Duty

HEI - High Energy Ignition

HID – High Intensity Discharge

HiAlt - High Altitude

HO - High Output

Hz - Hertz

I/C - Instrument Cluster

IC - Integrated Circuit

I/P – Instrument Panel

IPC - Instrument Panel Cluster

IAC – Idle Air Control

ICE – Internal Combustion Engine

ICM - Ignition Control Module

ID - Inside Diameter

IGN - Ignition

INJ - Injection

kg - Kilogram

kHz - Kilohertz

km - Kilometer

km/h - Kilometers per Hour

kPa - Kilopascal

kV - Kilovolt

kW - Kilowatt

L - Liter

L4 – Four Cylinder Inline Engine

LAPS - Local Area Parts Store

LCD – Liquid Crystal Display

LED – Light Emitting Diode

L/S - Liters per Second

LSD – Limited Slip Differential

LWB – Long Wheel-Base

MAF -Mass Air Flow

MAP – Manifold Absolute Pressure

MAT - Manifold Air Temperature

Max - Maximum

MFI – Multiport Fuel Injection

MIL – Malfunction Indicator Light (AKA Check Engine Light)

MPFI - Multi Port Fuel Injection

MPG – Miles per Gallon

MPGe – Miles per gallon equivalent (for electric vehicles)

MPV – Multi-Purpose Vehicle

mV - Milli Volt

NC - Normally Closed

N.m - Newton Meters

NO - Normally Open

NOx - Oxides of Nitrogen

O2 – Oxygen

OBD – On-board Diagnostics

OD - Outside Diameter

OD – Overdrive

OE – Original Equipment

OEM – Original Equipment Manufacturer

OL - Open Loop

P/B - Power Brakes

P/N – Part Number

PCM – Powertrain Control Module

PCV - Positive Crankcase Ventilation

P/N – Park/Neutral

PRNDL – Park, Reverse, Neutral, Drive, Low

PROM - Programmable Read Only Memory

P/S – Power Steering

PSI – Pounds per Square Inch

Pt - Pint

Qt - Quart

R-12 - Dichlorodifluoromethane Refrigerant(Brand name Freon-12)

R-134a - 1,1,1,2-Tetrafluoroethane Refrigerant

RDS – Radio Display System

RF – Radio Frequency

RF – Right Front

RFI – Radio Frequency Interference

RKE – Remote Keyless Entry

RPM – Revolutions Per Minute

RPO – Regular Production Option

R&R – Remove and Replace

RV – Recreational Vehicle

RWAL – Rear Wheel Anti-lock

RWD – Rear Wheel Drive

SAE - Society of Automotive Engineers

SCPI - Sequential Central Port Fuel Injection

Sec - Secondary

SES - Service Engine Soon

SI - System International

SIR – Supplemental Inflatable Restraint (AKA Airbags)

SO2 - Sulfur Dioxide

SPEC - Specification

Speedo - Speedometer

SRS – Supplemental Restraint System

SWB – Short Wheel-Base

TACH – Tachometer

TB – Throttle Body

TBI - Throttle Body Injection

TCC - Transmission Converter Clutch

TDC - Top Dead Center

Term - Terminal

TEMP - Temperature

TPS - Throttle Position Sensor

TV - Throttle Valve

TVS - Thermal Vacuum Switch

U-Joint - Universal Joint

V - Volt(s)

Vac. or VAC – Vacuum

VCM - Vehicle Control Module

VIN – Vehicle Identification Number

VOM – Volt-Ohmmeter

VSS – Vehicle Speed Sensor

V-4 - Four Cylinder "V" Engine

V-6 - Six Cylinder "V" Engine

W - Watt

w/ - With

w/o - Without

WOT - Wide Open Throttle

Symbols:

° - Degrees

Ω - Ohm

∞ - Infinity

< - Less than

> - Greater than

∠ - Angle