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Acronyms for Automotive


A   

AAR: Automatic air recirculation 

ABS: Antilock Braking System 

ABSV: Air Bypass Solenoid Valve 

AC: Alternating Current 

A/C: Air Conditioning 

ACV: Actual cashed value 

ACTS: Air Charge Temperature Sensor 

ADC: Automatic damping control

AEV: Automatic enrichment vehicle 

AEI: Integrated electronic injection 

A/F: Air/Fuel Ratio 

AFC: Air Flow Control 

AFM: Air Flow Meter 

AFS: Air Flow Sensor 

ALCL: Assembly Line Communications Link 

ALDL: Assembly Line Data Link 

AM: Amplitude modification 

APO: All power options  

APS: Absolute Pressure Sensor 

APS: Atmospheric Pressure Sensor 

ASC: Automatic stability control 

ASCT: Automatic stability control traction  

ASDM: Airbag System Diagnostic Module 

ARAK: Active rear axle kinematics 

AT: Automatic transmission 

A/T: Automatic Transmission 

ATC: Adaptive transmission control 

ATDC: After Top Dead Center 

ATF: Automatic Transmission Fluid 

ATS: Air Temperature Sensor 

AW: Alloy wheels 

AWD: All Wheel Drive  

B 

B+: Battery Positive Voltage 

BT: British Thermal Units  

BARO: Barometric Pressure 

BAS: Braking assists system 

BAT: Battery 

BCM: Body Control Module 

BDC: Bottom dead center 

BHP: Brake Horse Power 

BMAP: Barometric/Manifold Absolute Pressure Sensor 

BPS: Back pressure Sensor

 BPT: Back Pressure Transducer 

BTDC: Before Top Dead Center 

BTU: British Thermal Units  

C

C: Celsius 

C3I: Computer Controlled Coil Ignition

CAB: Cabriolet / Convertible 

CAD: Computer aided design 

CALPAK: Calibration Pack 

CAN: Controller Area Network 

CANP: Canister Purge Solenoid Valve 

CAS: Crank Angle Sensor 

CBC: Cornering brake control 

CC: Cubic Centimeter 

CD: Drag coefficient 

CDI: Capacitor Discharge Ignition 

CEAB: Cold Engine Air Bleed 

CECU: Central Electronic Control Unit 

CER: Cold Enrichment Rod 

CESS: Cold Engine Sensor Switch 

CFI: Central Fuel Injection

CFI: Continuous Fuel Injection 

CFM: Cubic Feet Per Minute 

CID: cylinder identification sensor 

CID: Cubic Inch Displacement 

CIS: Continuous Injection System 

CKP: Crankshaft Position Sensor 

CMP: Camshaft Position Sensor 

CO: Carbon Monoxide 

CO2: Carbon Dioxide 

COP: Coil On Plug ignition 

CPE: Coupe 

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 

CVR: Control Vacuum Regulator 

CVT: Continuously variable transmission 

 D

DB: Decibels 

DBC: Dynamic brake control 

DC: Direct Current 

DDE: Digital diesel electronics 

DEFI: Digital Electronic Fuel Injection 

DFS: Deceleration Fuel Shutoff 

DIS: Distributorless Ignition System 

DIS: Direct Ignition System 

DIS: Diagnosis information system 

DLC: Data Link Connector 

DME: Digital motor electronics 

DOHC: Double Overhead Camshaft 

DPF: Diesel Particulate Filter 

DSC: Dynamic stability control 

DTC: Diagnostic Trouble Code 

DVOM: Digital Volt Ohm Meter 

 E

E: Economy 

E2PROM: Electrically Erasable Programmable Read Only Memory 

EACV: Electronic Air Control Valve 

EBCM: Electronic Brake Control Module 

EBM: Electronic Body Module 

ECA: Electronic Control Assembly 

ECC: Electronic climate control 

ECM: Engine Control Module 

ECT: Engine Coolant Temperature 

ECU: Electronic Control Unit 

EDC: Electronic damping control 

EDIS: Electronic Distributorless Ignition System 

EDTC: Engine drag torque control 

EEC: Exhaust emission control 

EEPROM: Electronically Erasable Programmable Read Only Memory E2PROM: Electronically Erasable Programmable Read Only Memory 

EFC: Electronic Fuel Control 

EFCA: Electronic Fuel Control Assembly 

EFI: Electronic Fuel Injection 

EGO: Exhaust Gas Oxygen Sensor 

EGR: Exhaust Gas Recirculation 

EGRPS: EGR Valve Position Sensor 

EGRT: EGR Temperature 

EH: Electronic-hydraulic 

EI: Electronic Ignition 

ELC: Electronic level control 

EMC: Electro-magnetic compatibility 

EMI: Electromagnetic Interference 

EMR: Electronic Module Retard 

EOS: Exhaust Oxygen Sensor 

EOBD: European Onboard Diagnostics 

EPC: Engine power control 

EPOS: EGR Valve Position Sensor 

EPROM: Erasable Programmable Read Only Memory (chip) 

ESA: Engine spark advance 

ESC: Electronic Spark Control 

EST: Electronic Spark Timing 

ET: Elapsed time

EVAP: Evaporative Emission System 

EVP: EGR Valve Position Sensor  

F 

F: Fahrenheit 

FBC: Feedback Carburetor System 

FBCA: Feedback Carburetor Actuator 

FCS: Fuel Control Solenoid 

FDC: Fuel Deceleration Valve 

FI: Fuel Injection

 F.I.R.S.T: Fully integrated road safety 

FLS: Fluid Level Sensor 

FM: Frequency modulation 

Ft.lb.: Foot Pound

FWD: Front-Wheel Drive 4

WD: Four-wheel drive  

G

Gal: Gallon 

GDI: Gasoline Direct Injection 

GEN: Generator 

GND: Ground 

GPM: Grams Per Mile 

GVW: Gross Vehicle Weight  

H

H2O: Water 

HC: Hydrocarbon 

HC: High Compression 

HD: Heavy duty 

HDC: Hill descent control 

HEGO: Heated Exhaust Gas Oxygen Sensor 

HEI: High Energy Ignition 

Hg: Mercury 

HO2S: Heated Oxygen Sensor 

HP: Horsepower 

HYD: Hydraulic 

HT: High Tension  

I

IAC: Idle Air Control 

IAT: Intake Air Temperature 

IATS: Intake Air Temperature Sensor 

IC: Integrated Circuit 

ICM: Ignition Control Module

ICS: Idle Control Solenoid 

ID: Inside Diameter 

IFI: Indirect Fuel Injection 

IGN: Ignition 

I: Injection

ISC: Idle Speed Control 

ISO: International Standards Organization 

ITCS: Ignition Timing Control System 

ITS: Idle Tracking Switch 

 J

JAS: Jet Air System  

K

KAT: Catalytic converter 

KHz: Kilohertz 

Km: Kilometers 

KOEC: "Key On, Engine Cranking" 

KOEO: "Key On, Engine Off" KOER: "

Key On, Engine Running" 

KPa: Kilopascal 

KS: Knock Sensor 

KV: Kilovolts  

L

L: Liters L: Limousine 

Lb. ft.: Pound Feet 

LC: Low compression 

LCD: Liquid Crystal Display 

LED: Light Emitting Diode 

LHD: Left-Hand Drive 

LSD: Limited slip differential 

LSR: Land speed record 

LTFT: Long Term Fuel Trim 

LWB: Long Wheel-Base  

M

MAF: Mass Air Flow 

MAP: Manifold Absolute Pressure 

MAT: Manifold Air Temperature 

Max: Maximum 

MBS: Maximum brake support 

Mch: Mechanical  

MCS: Mixture Control Solenoid 

MCT: Manifold Charge Temperature 

MFI: Multi Port Fuel Injection 

MIL: Malfunction Indicator Light 

MIN: Minimum mm: Millimeters 

MPFI: Multi Point Fuel Injection 

MPG: Miles Per Gallon 

MPH: Miles Per Hour 

MPI: Multi Port Injection 

MPV: Multi-Purpose Vehicle 

MS: Millisecond 

MT: Manual Transmission 

MV: Millivolts  

N

NEG: Negative 

Nm: Newton Meters 

NOX: Oxides of Nitrogen 

NVRAM: Nonvolatile Random Access Memory  

O

O2: Oxygen 

O2S: Oxygen Sensor 

OBD: Onboard Diagnostics 

OBD I: Onboard Diagnostics One 

OBD II: Onboard Diagnostics Two 

OD: Outside Diameter 

OD: Over Drive 

OE: Original Equipment 

OEM: Original Equipment Manufacturer 

OHC: Overhead Camshaft 

OHV: Overhead Valve 

ORV: Off road vehicle 

OS: Oxygen Sensor  

P

PA: Pressure Air 

PAIR: Pulsed Secondary Air Injection 

PAS: Power-Assisted Steering 

PB: Power brakes 

P/B: Power Bakes 

PCM: Powertrain Control Module 

PCV: Positive Crankcase Ventilation 

PDC: Park distance control 

PECV: Power Enrichment Control Valve 

PFI: Port Fuel Injection 

PID: Parameter ID 

PIP: Profile ignition pickup 

PL: Power locks 

P/N = Part Number 

PNP: Park/Neutral Switch 

POS: Positive 

PPM: Parts Per Million 

PROM: Program Read Only Memory (chip) 

PS: Power Steering 

PS: Power seats 

PSI: Pounds Per Square Inch 

PSP: Power Steering Pressure 

PTC: Pending Trouble Code 

PTC: Positive temperature coefficient  

PW: Power window 

PWR: Power to Weight Ratio 

Q

Qt.: Quart  

R

RAM: Random Access Memory 

RFI: Radio Frequency Interference 

RHD: Right-Hand Drive 

ROM: Read Only Memory 

RON: Rated Octane Number 

RPM: Revolutions Per Minute 

RUF: Adaptable to catalytic converter 

RWD: Rear-Wheel Drive  

S

SAE: Society of Automotive Engineering 

SC: Single Carburetor  

SC: Supercharged 

SEFI: Sequential Electronic Fuel Injection 

SES: Service Engine Soon (light) 

SFI: Sequential Fuel Injection 

SIPS: Side Impact Protection System 

SLS: Self leveling suspension 

SOHC: Single over head camshaft 

SR: Sunroof 

SRS: Secondary Restraint System 

SRS: Supplemental Restraint System (air bag) 

SRT: System Readiness Test 

SS: Speed Sensor 

SSI: Solid State Ignition 

STFT: Short Term Fuel Trim 

SWB: Short Wheel-Base  

T

TACH: Tachometer 

TB: Throttle Body 

TBI: Throttle Body Injection 

TC: Turbocharged 

TC: Twin Carburetor 

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 (A turbo charged direct injected diesel engine) 

TIV: Thermactor Idle Vacuum Valve 

TKS: Throttle Kicker Solenoid 

TPI: Tuned Port Injection 

TPP: Throttle Position Potentiometer 

TPS: Throttle Position Sensor 

TPT: Throttle Position Transducer 

TS: Twin spark 

TSP: Throttle Solenoid Positioner 

TUR: Turbo 

TV: Throttle Valve 

TVS: Thermal Vacuum Switch 

TWC: Three Way Catalyst 

TWC+OC: Three Way + Oxidation Catalytic Converter  

V

V: Volts 

VAC: Vacuum 

VAC: Volts Alternating Current 

VAF: Volume Airflow 

VAF: Vane Airflow Sensor 

VCC: Viscous Converter Clutch 

VCM: Vehicle Control Module 

VDC: Volts Direct Current 

VIN: Vehicle Identification Number 

VR: Voltage Regulator VS: Vehicle Sensor 

VSS: Vehicle Speed Sensor 

VVC: Variable Valve Control 

VVT: Variable Valve Timing  

W

WOT: Wide-Open Throttle  

Z

 ZEV: Zero Emissions Vehicle

Copyright © 2014 Thomas Auto Service - All Rights Reserved. 

Thomas Auto Inc. 318 Oshkosh St., Rapid City, SD 57701 

(605) 342-5422

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