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Abbreviations and AcronymsA/C = Air ConditioningA/F = Air/Fuel RatioA/T = Automatic Transmission or TransaxleABS = Antilock Braking SystemABSV = Air Bypass Solenoid Valve

AC = Alternating CurrentACTS = Air Charge Temperature SensorAFC = Air Flow ControlAFM = Air Flow MeterAFS = Air Flow SensorALCL = Assembly Line Communications LinkALDL = Assembly Line Data LinkAPS = Absolute Pressure SensorAPS = Atmospheric Pressure SensorASDM = Airbag System Diagnostic ModuleATDC = After Top Dead CentreATF = Automatic Transmission FluidATS = Air Temperature Sensor

AWD = All Wheel DriveB+ = Battery Positive VoltageBARO = Barometric PressureBAT = BatteryBCM = Body Control ModuleBHP = Brake Horse PowerBMAP = Barometric/Manifold Absolute Pressure SensorBPS = Back pressure SensorBPT = Back Pressure TransducerBTDC = Before Top Dead CentreBtu = British Thermal UnitsC = CelsiusC3I = Computer Controlled Coil IgnitionCALPAK = Calibration PackCAN = Controller Area NetworkCANP = Canister Purge Solenoid ValveCAS = Crank Angle SensorCC = Cubic CentimetresCDI = Capacitor Discharge IgnitionCEAB = Cold Engine Air BleedCECU = Central Electronic Control UnitCER = Cold Enrichment RodCESS = Cold Engine Sensor SwitchCFI = Central Fuel InjectionCFI = Continuous Fuel Injectioncfm = Cubic Feet Per MinuteCID = cylinder identification sensor

CID = Cubic Inch DisplacementCIS = Continuous Injection SystemCKP = Crankshaft Position SensorCMP = Camshaft Position SensorCO = Carbon MonoxideCO2 = Carbon DioxideCOP = Coil On Plug ignitionCPI = Central Port InjectionCPU = Central Processing UnitCSSA = Cold Start Spark AdvanceCSSH = Cold Start Spark Hold

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CTS = Coolant Temperature SensorCTVS = Choke Thermal Vacuum SwitchCVR = Control Vacuum RegulatordB = DecibelsDC = Direct CurrentDEFI = Digital Electronic Fuel InjectionDFS = Deceleration Fuel ShutoffDIS = Distributorless Ignition System

DIS = Direct Ignition SystemDLC = Data Link ConnectorDOHC = Double Over Head CamshaftDPF = Diesel Particulate FilterDTC = Diagnostic Trouble CodeDVOM = Digital Volt Ohm MeterE2PROM = Electrically Erasable Programmable Read Only MemoryEACV = Electronic Air Control ValveEBCM = Electronic Brake Control ModuleEBM = Electronic Body ModuleECA = Electronic Control AssemblyECM = Engine Control ModuleECT = Engine Coolant Temperature

ECU = Electronic Control UnitEDIS = Electronic Distributorless Ignition SystemEEPROM = Electronically Erasable Programmable Read Only MemoryE2PROM = Electronically Erasable Programmable Read Only MemoryEFC = Electronic Fuel ControlEFCA = Electronic Fuel Control AssemblyEFI = Electronic Fuel InjectionEGO = Exhaust Gas Oxygen SensorEGR = Exhaust Gas RecirculationEGRPS = EGR Valve Position SensorEGRT = EGR TemperatureEI = Electronic IgnitionEMI = Electromagnetic Interference

EMR = Electronic Module RetardEOS = Exhaust Oxygen SensorEOBD = European Onboard DiagnosticsEPOS = EGR Valve Position SensorEPROM = Erasable Programmable Read Only Memory (chip)ESC = Electronic Spark ControlEST = Electronic Spark TimingEVAP = Evaporative Emission SystemEVP = EGR Valve Position SensorF = FahrenheitFBC = Feedback Carburettor SystemFBCA = Feedback Carburettor ActuatorFCS = Fuel Control SolenoidFDC = Fuel Deceleration Valve

FI = Fuel InjectionFLS = Fluid Level Sensorft.lb. = Foot PoundFWD = Front-Wheel Drivegal = GallonGDI = Gasoline Direct InjectionGEN = GeneratorGND = GroundGPM = Grams Per MileGVW = Gross Vehicle WeightH20 = Water

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HC = HydrocarbonHEGO = Heated Exhaust Gas Oxygen SensorHEI = High Energy IgnitionHg = MercuryHO2S = Heated Oxygen Sensorhp = HorsepowerHT = High TensionIAC = Idle Air Control

IAT = Intake Air TemperatureIATS = Intake Air Temperature SensorIC = Integrated CircuitICM = Ignition Control ModuleICS = Idle Control SolenoidID = Inside DiameterIFI = Indirect Fuel InjectionIGN = IgnitionISC = Idle Speed ControlISO = International Standards OrganizationITCS = Ignition Timing Control SystemITS = Idle Tracking SwitchJAS = Jet Air System

kHz = KilohertzKm = KilometresKOEC = "Key On, Engine Cranking"KOEO = "Key On, Engine Off"KOER = "Key On, Engine Running"kPa = KilopascalsKS = Knock SensorKV = KilovoltsL = Litreslb. ft. = Pound FeetLCD = Liquid Crystal DisplayLED = Light Emitting DiodeLHD = Left-Hand Drive

LTFT = Long Term Fuel TrimLWB = Long Wheel-BaseMAF = Mass Air FlowMAP = Manifold Absolute PressureMAT = Manifold Air TemperatureMCS = Mixture Control SolenoidMCT = Manifold Charge TemperatureMFI = Multi Port Fuel InjectionMIL = Malfunction Indicator Lightmm = MillimetresMPFI = Multi Point Fuel InjectionMPG = Miles Per GallonMPH = Miles Per HourMPI = Multi Port Injection

MPV = Multi-Purpose Vehiclems = MillisecondmV = MillivoltsNm = Newton MetresNOX = Oxides of NitrogenNVRAM = Non-volatile Random Access MemoryO2 = OxygenO2S = Oxygen SensorOBD = Onboard DiagnosticsOBD I = Onboard Diagnostics OneOBD II = Onboard Diagnostics Two

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OD = Outside DiameterOE = Original EquipmentOEM = Original Equipment ManufacturerOHC = Over Head CamshaftOHV = Over Head ValveOS = Oxygen SensorP/B = Power BakesP/N = Part Number

PA = Pressure AirPAIR = Pulsed Secondary Air InjectionPAS = Power-Assisted SteeringPCM = Powertrain Control ModulePCV = Positive Crankcase VentilationPECV = Power Enrichment Control ValvePFI = Port Fuel InjectionPID = Parameter IDPIP = Profile ignition pickupPNP = Park/Neutral SwitchPPM = Parts Per MillionPROM = Program Read Only Memory (chip)PS = Power Steering

PSI = Pounds Per Square InchPSP = Power Steering Pressurept. = PintPTC = Pending Trouble CodePTC = Positive temperature coefficient Additional : This is applied to the way the resistance of a thermistorvaries with temperature. In this case, the resistance will increase as the temperature raisesPWR = Power to Weight RatioQt. = QuartRAM = Random Access MemoryRFI = Radio Frequency InterferenceRHD = Right-Hand DriveROM = Read Only MemoryRON = Rated Octane Number

RPM = Revolutions Per MinuteRWD = Rear-Wheel DriveSC = SuperchargedSEFI = Sequential Electronic Fuel InjectionSES = Service Engine Soon (light)SFI = Sequential Fuel InjectionSIPS = Side Impact Protection SystemSOHC = Single Over Head CamshaftSRS = Secondary Restraint SystemSRS = Supplemental Restraint System (air bag)SRT = System Readiness TestSS = Speed SensorSSI = Solid State IgnitionSTFT = Short Term Fuel Trim

SWB = Short Wheel-BaseTACH = TachometerTB = Throttle BodyTBI = Throttle Body InjectionTC = TurbochargedTCC = Torque Converter ClutchTCM = Transmission or Transaxle Control ModuleTCS = Traction control solenoid (SAAB 9000)TD = Turbo DieselTDC = Top Dead CentreTDI = Turbo Direct Injection (A turbo charged direct injected diesel engine)

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TIV = Thermactor Idle Vacuum ValveTKS = Throttle Kicker SolenoidTPI = Tuned Port InjectionTPP = Throttle Position PotentiometerTPS = Throttle Position SensorTPT = Throttle Position TransducerTSP = Throttle Solenoid PositionerTV = Throttle Valve

TVS = Thermal Vacuum SwitchTWC = Three Way CatalystTWC+OC = Three Way + Oxidation Catalytic ConverterV = VoltsVAC = VacuumVAC = Volts Alternating CurrentVAF = Volume AirflowVAF = Vane Airflow SensorVCC = Viscous Converter ClutchVCM = Vehicle Control ModuleVDC = Volts Direct CurrentVIN = Vehicle Identification NumberVR = Voltage Regulator

VS = Vehicle SensorVSS = Vehicle Speed SensorVVC = Variable Valve ControlVVT = Variable Valve TimingWOT = Wide Open Throttle