NOTE:
This article is intended for general information purposes only. This information may not apply to all makes and models. Not all abbreviations are covered as manufacturers add new ones every day.
Amperes
Anti-Lock Brakes
Air Bag Restraint System
Alternating Current
Air Conditioning
A/C Cycling Switch
Accumulator
Accessory
Air Charge Temperature Sensor
Adjust or Adjustable
Advance
Airflow Sensor
Air Injection
Air Injection Reactor
Air Injection System
Alternator or Altitude
Ampere
Air Suction Control Solenoid
Auto Shutdown
Air Bag System Diagnostic Module
Air Suction Valve
Automatic Transmission/Transaxle
Automatic Temperature Control
After Top Dead Center
Automatic Transmission Fluid
Air Temperature Sensor
Auxiliary
Average
Automatic Transaxle Overdrive (Ford Models Only)
By-Pass Air Control
Barometric Absolute Pressure Sensor
Barometric
Battery
Barrel (Example: 4-Bbl.)
Body Control Module
Brake Horsepower
Barometric and Manifold Absolute Pressure Sensor
Brake On-Off Switch
Backpressure
Barometric Pressure Sensor
Backpressure Transducer
Before Top Dead Center
Brake Transmission Shift Interlock
British Thermal Unit
Bimetallic Vacuum Switching Valve
Celsius (Degrees)
California
Canister Purge
California Air Resources Board
Catalytic Converter
Circuit Breaker
Closed Bowl Distributor
cubic centimeter
Close Coupled Catalyst
Computer Command Control
Computer Controlled Dwell
Cycling Clutch Orifice Tube
Counterclockwise
Capacitor Discharge Ignition
Computerized Engine Control
Cubic Inch Displacement
Centimeter
Camshaft Position Sensor
Carbon Monoxide
Carbon Dioxide
Continued
Convertible
Canister Purge
Crankshaft Position Sensor
Coolant Temperature Sensor
Cubic Inch
Constant Vacuum Control
Check Valve or Constant Velocity
Clockwise
Cylinder
Computer Controlled Coil Ignition
Computer Controlled Catalytic Converter
Drive
Direct Current Or Discharge
Dual Diaphragm Distributor
Defrost
Defogger
Diagnostic Energy Reserve Module
Digital Fuel Injection
Diagnostic
Diagnostic Trouble Code
Driver Information Center
Distributorless Ignition System
Distribution
Data Link Connector
Diesel Oxidation Catalyst
Double Overhead Cam
Department of Transportation
Diesel Particulate Filter
Diagnostic Readout Box
Digital Volt-Ohmmeter
Electric Air Control Valve
Electronic Automatic Transaxle
Electronic Brake Control Module
Electronic Back Light
Engine Control Module
Engine Coolant Temperature Sensor
Electronic Distributorless Ignition System
Electronic Engine Control
Evaporative Emission Control System
Electronically Erasable PROM
Early Fuel Evaporation
Exhaust Gas Oxygen Sensor
Exhaust Gas Recirculation
Engine Oil Temperature
Electronic Spark Advance
Electronic Spark Control
Electronic Spark Timing
Fuel Evaporative System
Electronic Vehicle Information Center
EGR Valve Position Sensor
Exponentially Weighted Moving Average (MODE 6)
Except
Fahrenheit (Degrees)
Fuse Block
Federal
Fuel Injection
Fuel Injection Control Unit
Fuel Injector Pump Lever
Fuel Level Indicator
Fuel Pressure Regulator Vacuum Switching Valve
Foot Pounds
Front Wheel Drive
grams
gallons
Ground
High Altitude Compensation
Hydrocarbons
Heavy Duty
Heated Exhaust Gas Oxygen Sensor
Mercury
Height
Headlight
High Output
Heated Oxygen Sensor
High Performance
High Swirl Combustion
High Specific Output
Heater
Hertz (Cycles Per Second)
Idle Air Control
Idle Air Control Valve
Intake Air Temperature
Integrated Circuit
Identification
Inside Diameter
Independant Front Suspension
Inertia Fuel Shutoff (Ford)
Ignition
Intake Manifold Runner Control
Inches
Inch Pounds
Inches of Mercury
Injector
Instrument Panel
Independant Rear Suspension
Idle Speed Control
Interactive Vehicle Dynamics (Ford)
Idle Vacuum Switching Valve
Junction Block
Keep Alive Power
kilo-ohms (1000 ohms)
Kilograms (weight)
Kilograms Per Square Centimeter
Kilometers Per Hour
Key On, Engine Off
Key On, Engine Running
Knock Sensor
Kilowatt
Kilovolt
Liter
Pounds
Liquid Crystal Display
Light Duty
Leak Detection Pump (Part of EVAP system.)
Light Emitting Diode
Left Hand
Milliamps
Mass Airflow
Mass Airflow Sensor
Manifold Absolute Pressure
Manifold Air Temperature
Memory
Memory Calibration Chip
Microfarads
Multiport Fuel Injection
Multiplex Integrated Control Unit (Acura/Honda)
Malfunction Indicator Light
Multi-Point (Fuel) Injection
Millimeters
Miles Per Hour
Millivolts
Not Available
NOx Adsorber Catalyst
No Color Available (Wiring Diagrams)
New Generation Star
Newton Meter
Number
Numbers
Oxides of Nitrogen
Oxygen
On-Board Diagnostics
Oxidation Catalyst
Overdrive
Outside Diameter
Overhead Camshaft
Output Speed Sensor
Oversize
Ounce
Ounces
Park
Printed Circuit
Powertrain Control Module
Purge Control Solenoid
Purge Control Solenoid
Positive Crankcase Ventilation
Port Fuel Injection
Programmed Fuel Injection
Parameter Identification
Profile Ignition Pick-up
Park Neutral Position Switch
Park/Neutral
Park Reverse Neutral Drive Low
Programmable Read-Only Memory
Pounds Per Square Inch
Power Steering
Power Steering Pressure Switch
Positive Temperature Coefficient
Power Take-Off
Pints
Power
Quarts
Rear Anti-Lock Brake System
Recirculation
Right Hand
Revolutions Per Minute
Rear Wheel Anti-Lock Brake
Rear Wheel Drive
Steering Angle Sensor
Single Bed Converter
Single Board Engine Controller
Satellite Digital Audio Radio Service
Service Engine Soon
Sequential (Port) Fuel Injection
Shift Indicator Light
Supplemental Inflatable Restraint
Single Overhead Cam
Solenoid
Sequential Port Fuel Injection
Spark Control
Spark Output
Service Reminder Indicator
Supplemental Restraint System (Air Bag)
Self-Test Automatic Readout
Self-Test Output
Sub Oxygen Sensor
Switch
System
Thermactor Air By-Pass
Throttle Actuator Module
Thermactor Air Diverter
Body Control Module (General Motors)
Throttle Body Injection
Torque Converter Clutch
Top Dead Center
Temperature
Thick Film Ignition
Thermostatic Air Cleaner
Tire Pressure Monitor
Tire Pressure Monitor System
Throttle Position Sensor/Switch
Temperature Sensor
Thermovalve
Three-Way Catalyst
Valve
Vacuum
Vane Airflow
Variable Assist Power Steering
Viscous Converter Clutch
Variable Control Relay Module
Vehicle Identification Number
Vacuum Modulator
Voltage
Volt-Ohmmeter (Analog)
Vacuum Regulator Valve
Vehicle Speed Sensor
Vacuum Switching Valve
With
Without
Wide Open Throttle A/C Switch
Wide Open Throttle