Automotive terms/abbreviations/definitions

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==Resources==
 
*[http://www.motorera.com/dictionary/index.htm Dictionary of Automotive terms]
 
*[http://www.archtoolbox.com/representation/abbreviations/99-electabbrev.html Electrical abreviations] from archtoolbox.com
 
  
==Automotive terms==
 
 
; "A"
 
 
A - Amperes
 
 
ABS - Anti-Lock Brakes
 
 
ABRS - Air Bag Restraint System
 
 
AC - Alternating Current
 
 
A/C - Air Conditioning
 
 
ACCS - A/C Cycling Switch
 
 
ACCUM - Accumulator
 
 
ACCY - Accessory
 
 
ACT - Air Charge Temperature Sensor
 
 
ADV - Advance
 
 
AFS - Airflow Sensor
 
 
AFR - Air Fuel Ratio (also see below)
 
 
A/F - Air/Fuel Ratio
 
 
AI - Air Injection
 
 
AIR or A.I.R. - Air Injection Reactor
 
 
AIS - Air Injection System
 
 
Alt. - Alternator or Altitude
 
 
ALDL - Assembly Line Data Link
 
 
Amp - /amp/amps: Ampere
 
 
APS - Absolute Pressure Sensor
 
 
APPS - Accelerator Pedal Position Sensor
 
 
ASCS - Air Suction Control Solenoid
 
 
ASD - Auto Shutdown
 
 
ASDM - Air Bag System Diagnostic Module
 
 
ASV - Air Suction Valve
 
 
A/T - Automatic Transmission/Transaxle
 
 
ATC - Automatic Temperature Control
 
 
ATDC - After Top Dead Center
 
 
ATF - Automatic Transmission Fluid
 
 
ATS - Air Temperature Sensor
 
 
AWD - All Wheel Drive
 
 
 
; "B"
 
 
B+ - Battery Positive Voltage
 
 
BAC - By-Pass Air Control
 
 
BAP - Barometric Absolute Pressure Sensor
 
 
BARO - Barometric
 
 
Batt. - Battery
 
 
Bbl. - Barrel (Example: 4-Bbl.)
 
 
BCM - Body Control Module
 
 
BHP - Brake Horsepower
 
 
BMAP - Barometric and Manifold Absolute Pressure Sensor
 
 
BOO - Brake On-Off Switch
 
 
B/P - Backpressure
 
 
BPS - Barometric Pressure Sensor
 
 
BPT - Backpressure Transducer
 
 
BTDC - Before Top Dead Center
 
 
BTU - British Thermal Unit
 
 
 
; "C"
 
 
C - Celsius (Degrees)
 
 
CAN - Controller Area Network
 
 
CANP - Canister Purge
 
 
CAS - Crank Angle Sensor
 
 
CARB - California Air Resources Board
 
 
CAT - Catalytic Converter
 
 
CB - Circuit Breaker
 
 
CBD - Closed Bowl Distributor
 
 
CC - cubic centimeter
 
 
CCC - Computer Command Control
 
 
CCD - Computer Controlled Dwell
 
 
CCOT - Cycling Clutch Orifice Tube
 
 
CCW - Counterclockwise
 
 
CDI - Capacitor Discharge Ignition
 
 
CEC - Computerized Engine Control
 
 
CID - Cubic Inch Displacement
 
 
CM - Centimeter
 
 
CMP - Camshaft Position Sensor
 
 
CO - Carbon Monoxide
 
 
CO2 - Carbon Dioxide
 
 
Cont. - Continued
 
 
CONV - Convertible
 
 
CP - Canister Purge
 
 
CKP - Crankshaft Position Sensor
 
 
COP - Coil On Plug Ignition
 
 
CPI - Central Port Injection
 
 
CPU - Central Processing Unit
 
 
CSSA - Cold Start Spark Advance
 
 
CSSH - Cold Start Spark Hold
 
 
CTS - Coolant Temperature Sensor
 
 
CTVS - Choke Thermal Vacuum Switch
 
 
Cu. In. - Cubic Inch
 
 
CVC - Constant Vacuum Control
 
 
CVCC - Controlled Vortex Combustion Chamber
 
 
CVR - Control Vacuum Regulator
 
 
CV - Check Valve or Constant Velocity
 
 
CVVT- Continuous Variable Valve Timing
 
 
CW - Clockwise
 
 
CYL or Cyl. - Cylinder
 
 
 
; "D"
 
 
D - Drive
 
 
dB - Decibels
 
 
DC - Direct Current Or Discharge
 
 
DDD - Dual Diaphragm Distributor
 
 
Def. - Defrost
 
 
Defog. - Defogger
 
 
DEFI - Digital Electronic Fuel Injection
 
 
DERM - Diagnostic Energy Reserve Module
 
 
DFI - Digital Fuel Injection
 
 
DFS - Deceleration Fuel Shutoff
 
 
Diag. - Diagnostic
 
 
DIC - Driver Information Center
 
 
DIS - Distributorless Ignition System
 
 
DIST - Distribution
 
 
DLC - Data Link Connector
 
 
DMM - Digital Multi Meter
 
 
DOHC - Double Overhead Cam
 
 
DTC - Diagnostic Trouble Code
 
 
DOT - Department of Transportation
 
 
DRB-II - Diagnostic Readout Box
 
 
DVOM - Digital Volt-Ohmmeter
 
 
 
; "E"
 
 
EACV - Electronic Air Control Valve
 
 
EBCM - Electronic Brake Control Module
 
 
EBL - Electronic Back Light
 
 
EBM - Electronic Body Module
 
 
ECA - Electronic Control Assembly
 
 
ECM - Engine Control Module
 
 
ECT - Engine Coolant Temperature
 
 
ECU - Electronic Control Unit
 
 
EDIS - Electronic Distributorless Ignition System
 
 
EEC - Electronic Engine Control
 
 
EECS - Evaporative Emission Control System
 
 
EEPROM - Electronically Erasable Programmable Read Only Memory
 
 
EFC - Electronic Fuel Control
 
 
EFCA - Electronic Fuel Control Assembly
 
 
EFE - Early Fuel Evaporation
 
 
EFI - Electronic Fuel Injection
 
 
EGO - Exhaust Gas Oxygen Sensor
 
 
EGR - Exhaust Gas Recirculation
 
 
EGRPS - EGR Valve Position Sensor
 
 
EGRT - EGR Temperature
 
 
EGT - Exhaust Gas Temperature
 
 
EI - Electronic Ignition
 
 
EMI - Electromagnetic Interference
 
 
EMR - Electronic Module Retard
 
 
EOS - Exhaust Oxygen Sensor or Engine Oil Suppliment
 
 
EOBD - European Onboard Diagnostics
 
 
EPOS - EGR Valve Position Sensor
 
 
EPROM - Erasable Programmable Read Only Memory
 
 
ESA - Electronic Spark Advance
 
 
ESC - Electronic Spark Control
 
 
EST - Electronic Spark Timing
 
 
ETC - Electronic Throttle Control
 
 
EVAP - Evaporative Emission System
 
 
EVIC - Electronic Vehicle Information Center
 
 
EVP - EGR Valve Position
 
 
 
; "F"
 
 
F - Fahrenheit
 
 
F/B - Fuse Block
 
 
FCS - Fuel Control Solenoid
 
 
Fed - Federal
 
 
FDC - Fuel Deceleration Valve
 
 
FI - Fuel Injection
 
 
FIPL - Fuel Injector Pump Lever
 
 
FPR-VSV - Fuel Pressure Regulator Vacuum Switching Valve
 
 
FLS - Fluid Level Sensor
 
 
ft.lb. - Foot Pound
 
 
FWD - Front-Wheel Drive
 
 
 
; "G"
 
 
G - Grams
 
 
GALS - Gallon
 
 
GDI - Gasoline Direct Injection
 
 
GEN - Generator
 
 
GND or GRND - Ground
 
 
GPS - Global Positioning System
 
 
GVW - Gross Vehicle Weight
 
 
 
; "H"
 
 
H20 - Water
 
 
HAC - High Altitude Compensation
 
 
HC - Hydrocarbons
 
 
H/D - Heavy Duty
 
 
HEGO - Heated Exhaust Gas Oxygen Sensor
 
 
HEI - High Energy Ignition
 
 
Hg - Mercury
 
 
HGT - Height
 
 
HLDT - Headlight
 
 
HO - High Output
 
 
HO2S - Heated Oxygen Sensor
 
 
HP - High Performance or Horsepower
 
 
HSC - High Swirl Combustion
 
 
HSO - High Specific Output
 
 
HT - High Tension
 
 
HTR - Heater
 
 
Hz - Hertz(Cycles Per Second)
 
 
 
; "I"
 
 
IAC - Idle Air Control Valve
 
 
IAT - Intake Air Temperature
 
 
IATS - Intake Air Temperature Sensor
 
 
IC - Integrated Circuit
 
 
ICM - Ignition Control Module
 
 
ICS - Idle Control Solenoid
 
 
I.D. - Inside Diameter
 
 
ID - Identification
 
 
IFI - Indirect Fuel Injection
 
 
IGN - Ignition
 
 
In. - Inches
 
 
Inch Lbs. - Inch Pounds
 
 
in. Hg - Inches of Mercury
 
 
Inj. - Injector
 
 
IMRC - Intake Manifold Runner Control
 
 
IP - Instrument Panel (also see below)
 
 
IP - Injector Pump (diesel applications)
 
 
ISC - Idle Speed Control
 
 
ISO - International Standards Organization
 
 
ITCS - Ignition Timing Control System
 
 
ITS - Idle Tracking Switch
 
 
IVSV - Idle Vacuum Switching Valve
 
 
 
; "J"
 
 
JAS - Jet Air System
 
 
J/B - Junction Block
 
 
 
; "K"
 
 
k/ohms - kilo-ohms or Kilohms (1000 ohms)
 
 
kg - kilograms (weight)
 
 
kg/cm - Kilograms Per Square Centimeter
 
 
kHz - Kilohertz
 
 
Km - Kilometers
 
 
KM/H - Kilometers Per Hour
 
 
KOEC - Key On, Engine Cranking
 
 
KOEO - Key On, Engine Off
 
 
KOER - Key On, Engine Running
 
 
kPa - kilopascals
 
 
KS - Knock Sensor
 
 
kV - Kilovolt
 
 
kW – Kilowatt
 
 
 
; "L"
 
 
L - Liter
 
 
lbs. - Pounds
 
 
lb./ft. - Pound Feet
 
 
LCD - Liquid Crystal Display
 
 
L/D - Light Duty
 
 
LED - Light Emitting Diode
 
 
LHD - Left-Hand Drive
 
 
LTFT - Long Term Fuel Trim
 
 
LWB - Long Wheel-Base
 
 
 
; "M"
 
 
mA - Milliamps
 
 
MA/MAF - Mass Air Flow
 
 
MAFS - Mass Air Flow Sensor
 
 
MAP - Manifold Absolute Pressure
 
 
MAT - Manifold Air Temperature
 
 
MCS - Mixture Control Solenoid
 
 
MCT - Manifold Charge Temperature
 
 
Mem. - Memory
 
 
MEM/CAL - Memory Calibration Chip
 
 
mfd. - Microfarads
 
 
MFI - Multiport Fuel Injection
 
 
MIL - Malfunction Indicator Light
 
 
mm - Millimeters
 
 
MPG - Miles Per Gallon
 
 
MPH - Miles Per Hour
 
 
MPI - Multi-Point (Fuel) Injection
 
 
MPV - Multi-Purpose Vehicle
 
 
ms - Millisecond
 
 
mV - Millivolts
 
 
 
; "N"
 
 
NA - Not Available
 
 
NBO2 - Narrow Band Oxygen Sensor
 
 
NGC - New Generation Controller
 
 
NGS - New Generation Star
 
 
N.m - Newton Meter
 
 
No. - Number
 
 
Nos. - Numbers
 
 
NOx - Oxides of Nitrogen
 
 
NVRAM - Nonvolatile Random Access Memory
 
 
 
; "O"
 
 
O2 - Oxygen
 
 
O2S - Oxygen Sensor
 
 
OBD - On-board Diagnostics
 
 
OBD I - On-board Diagnostics One
 
 
OBD II - On-board Diagnostics Two
 
 
OBD III - On-board Diagnostics Three
 
 
OC - Oxidation Catalyst
 
 
OD - Overdrive
 
 
O.D. - Outside Diameter
 
 
OE - Original Equipment
 
 
OEM - Original Equipment Manufacturer
 
 
OHC - Over Head Camshaft
 
 
OHV - Over Head Valve
 
 
O/S - Oversize
 
 
OS - Oxygen Sensor
 
 
oz. - Ounce
 
 
ozs. - Ounces
 
 
 
; "P"
 
 
P - Park
 
 
P/B - Power Bakes
 
 
P/C - Printed Circuit
 
 
P/N - Part Number
 
 
PA - Pressure Air
 
 
PAS - Power-Assisted Steering
 
 
PCM - Powertrain Control Module
 
 
PCS/PC/SOL - Purge Control Solenoid
 
 
PCV - Positive Crankcase Ventilation
 
 
PECV - Power Enrichment Control Valve
 
 
PFI - Port Fuel Injection
 
 
PGM-FI - Programmed Fuel Injection
 
 
PID - Parameter Identification
 
 
PIP - Profile ignition pick-up
 
 
PNP - Park Neutral Position Switch
 
 
P/N - Park/Neutral
 
 
PPM - Parts Per Million
 
 
PRNDL - Park Reverse Neutral Drive Low
 
 
PROM - Program Read Only Memory (chip)
 
 
P/S - Power Steering
 
 
PSI - Pounds Per Square Inch
 
 
PSP - Power Steering Pressure
 
 
PSPS - Power Steering Pressure Switch
 
 
pts. - Pints
 
 
Pwr. - Power
 
 
PWR - Power to Weight Ratio
 
 
 
; "R"
 
 
R/A - Resume or Accelerate
 
 
RAC - Remote Accessory Controller
 
 
RAM - Random Access Memory
 
 
RAM - Ride Air Module
 
 
RAM - Remote Anti-theft Module
 
 
RAP - Retained Access Power
 
 
RAV - Remote Activation Verification
 
 
RBC - Rotary Blade Coupling
 
 
RCC - Rear Climate Control
 
 
RCC - Remote Climate Control
 
 
RCM - Restraint Control Module
 
 
RDM - Rear Door Module
 
 
RDS - Radio Display System
 
 
REC - Receive
 
 
RECAL - Recalibrate
 
 
RECIRC - Recirculation
 
 
RF - Radio Frequency
 
 
RF - Right Front
 
 
RFA - Remote Function Actuator
 
 
RFF - Roller Finger Followers
 
 
RFI - Radio Frequency Interference
 
 
RFID - Radio Frequency Identification
 
 
RFWS - Right Front Wheel Speed
 
 
RH - Right Hand
 
 
RIM - Radio Interface Module
 
 
RIM - Rear Integration Module
 
 
RKE - Remote Keyless Entry
 
 
Rly - Relay
 
 
RM - Relay Module
 
 
ROM - Read Only Memory
 
 
RPM - Revolutions Per Minute
 
 
RPO - Regular Production Option
 
 
R&R - Remove and Replace
 
 
RR - Right Rear
 
 
RSA - Rear Seat Audio
 
 
RSC - Roll Stability Control
 
 
RSS - Road Sensing Suspension
 
 
R/T - Road/Track
 
 
RT - Right
 
 
RTD - Real Time Dampening
 
 
RTN - Return
 
 
RV - Recreational Vehicle
 
 
RWAL - Rear Wheel Anti-lock
 
 
RWD - Rear Wheel Drive
 
 
RWS - Rear Wheel Steer
 
 
 
; "S"
 
 
SBC - Single Bed Converter
 
 
SBD - Strategy Base Diagnostics
 
 
SC - Supercharged
 
 
SEFI - Sequential Electronic Fuel Injection
 
 
SES - Service Engine Soon
 
 
SFI - Sequential Fuel Injection
 
 
SIR - Supplemental Inflatable Restraint
 
 
SIPS - Side Impact Protection System
 
 
SOHC - Single Overhead Cam
 
 
SPFI - Sequential Port Fuel Injection
 
 
SPOUT - Spark Output
 
 
SPK - Spark Control
 
 
SOL/Sol. - Solenoid
 
 
SRI - Service Reminder Indicator
 
 
SRS - Secondary Restraint System
 
 
SRS - Supplemental Restraint System
 
 
SSI - Solid State Ignition
 
 
STAR - Self-Test Automatic Readout
 
 
STFT - Short Term Fuel Trim
 
 
STO - Self-Test Output
 
 
Sw. - Switch
 
 
SWB - Short Wheel-Base
 
 
Sys. - System
 
 
 
;  "T"
 
 
TACH - Tachometer
 
 
TBI - Throttle Body Injection
 
 
TCC - Torque Converter Clutch
 
 
TCM - Transmission or Transaxle Control Module
 
 
TCS - Traction control solenoid
 
 
TD - Turbo Diesel
 
 
TDC - Top Dead Center
 
 
TDI - Turbo Direct Injection
 
 
Temp. - Temperature
 
 
THERMAC - Thermostatic Air Cleaner
 
 
TIV - Thermactor Idle Vacuum Valve
 
 
TKS - Throttle Kicker Solenoid
 
 
TPI - Tuned Port Injection
 
 
TPP - Throttle Position Potentiometer
 
 
TPS - Throttle Position Sensor/Switch
 
 
TPT - Throttle Position Transducer
 
 
TS - Temperature Sensor
 
 
TSP - Throttle Solenoid Positioner
 
 
TV - Throttle Valve
 
 
TV - Thermovalve
 
 
TVS - Thermal Vacuum Switch
 
 
TWC - Three Way Catalyst
 
 
 
; "U"
 
 
U/S - Undersize
 
 
 
; "V"
 
 
Vac. - Vacuum
 
 
VAF - Vane Airflow
 
 
VAPS - Variable Assist Power Steering
 
 
VCC - Viscous Converter Clutch
 
 
VCRM - Variable Control Relay Module
 
 
VIN - Vehicle Identification Number
 
 
VM - Vacuum Modulator
 
 
VOLT. - Voltage
 
 
VOM - Volt/Ohmmeter
 
 
VRV - Vacuum Regulator Valve
 
 
VSS - Vehicle Speed Sensor
 
 
VSV - Vacuum Switching Valve
 
 
VVC - Variable Valve Control
 
 
VVT - Variable Valve Timing
 
 
VVT-i - Variable Valve Timing with intelligence (controlled by the ECM)
 
 
 
; "W"
 
 
W/ - With
 
 
WB02 - Wide Band Oxygen Sensor
 
 
W/O - Without
 
 
WAC - Wide Open Throttle A/C Switch
 
 
WOT - Wide Open Throttle
 
 
==British to American==
 
Around the world there are some differences in the words used to describe things in the automotive field.
 
*Accumulator = battery, car battery
 
*Bonnet = hood
 
*Boot = trunk
 
*Dynamo = generator 
 
*Earth wire = ground wire
 
*Follower or tappet = lifter (tappet also used in the US, mostly in reference to the type of cam, i.e. "flat tappet"). 
 
*Harmonic balancer/damper = crankshaft pulley
 
*Inlet manifold = intake manifold
 
*Lorry = truck
 
*Number plate = license plate
 
*Petrol = gasoline
 
*Saloon = "sedan" or 4-door car
 
*"Semi" = duplex, duplex house; U.S. "semi" = tractor-trailer truck rig
 
*Windscreen (automotive) = windshield
 
*Wing (older vehicles) = fender, bumper
 
 
 
[[Category:Identification and decoding]]
 

Latest revision as of 07:21, 16 December 2024

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