Automotive Definitions

Discussion in 'FAQs & Tips' started by admin, Jul 24, 2016.

  1. admin

    admin Administrator Staff Member

    Nov 13, 2006
    Likes Received:
    ABS Anti-lock Braking System
    ABDC After Bottom Dead Center
    A/C Air Conditioning
    Acc Accessories
    ACL Automatic Chassis Lubrication System
    ACP Air Conditioner Pressure sensor
    ACT Air Charge temperature
    A.I.R. Air Injection Reaction system
    AIS Automatic Idle Speed
    AICS Air Induction Control System
    A/F Air to Fuel ratio
    ALDL Assembly Line Data Link
    APS Atmospheric Pressure Sensor
    ARCS Active Roll Control system
    AS Airflow Sensor
    ASD Automatic Slip-Control Differential
    ASR Anti Slip Regulation
    ATC Automatic Temperature Control
    ATDC After Top Dead Center
    ATF Automatic Transmission Fluid
    ATS Air Temperature Sensor
    AWD All Wheel Drive
    AWS All Wheel Steering
    BARO Barometric Pressure Sensor
    B+ Battery Positive terminal
    BATT + Battery Positive
    BATT - Battery Negative
    BBDC Before Bottom Dead Center
    BCS Boost Control Solenoid
    BDC Bottom Dead Center
    BHP Brake Horse Power
    BMEP Brake Mean Effective Pressure
    Bearing Oil Film Thickness

    BSFC Brake Specific Fuel Consumption
    BTDC Before Top Dead Center
    CAND Canister Purge Solenoid
    CAFE Corporate Average Fuel Economy
    CAG Computer Aided Gearshift
    CAS Crank Angle Sensor
    CB Contact Breaker
    CBE Cab Behind Engine
    CC Cruise Control
    CCC Computer Command Control (GM)
    CCS Coast Clutch Solenoid
    Cod Coefficient of Drag
    CD Capacity Discharge
    CFC Chlorofluorocarbon
    CI Compression Ignition
    Cid Cubic Inch Displacement
    CIS Continuous Injection System
    CIS-E Continuous Injection System electronic controls
    CIS-Lambda above w/ O2 sensor
    CKP Crank Position Sensor
    CO Carbon Monoxide
    COE Cab Over Engine
    CPS Crank Position Sensor
    CR Compression Ratio
    CTX Continuously Variable
    CV Constant Velocity joints
    DC Direct Current
    DCA Dessicant Coolant Additive
    DI Direct Injection
    DIS Direct Injection System
    DLC Data Link Connector
    DOHC Double Overhead Camshafts
    DTC Diagnostic Trouble Codes
    DVOM Digital Volt/Ohm Meter
    EBS Electronic Braking System
    ECI Electronically Controlled Injection
    ECM Electronic Control Module
    ECS Evaporative Control System
    ECS Electronically Controlled Suspension
    ECT Engine Coolant Temperature
    ECU Electronic Control Unit
    EDC Electronic Diesel Control
    EFC Electronic Feedback Carberator
    EFI Electronic Fuel Injection
    EGO Exhaust Gas Oxygen Sensor
    EGR Exhaust Gas Recirculation
    EMS Engine Management System
    EP Extreme Pressure (lubrication)
    EPAS Electrical Power Assisted Steering
    EPHS Electrically Powered Hydraulic Steering
    EPROM Eraseable Programmable Read Only Memory (GM)
    EPS Electric Power Steering
    ESS Engine Speed Sensor
    EST Electronic Spark Timing
    EUI Electronic Control Unit
    EVAP Evaporative Emission System
    EVC Exhaust Valve Close
    EVO Exhaust valve Open
    FCS Fuel Cutoff Solenoid
    FWD Front Wheel Drive
    GCW Gross Combination Weight
    GRP Glass Reinforced Plastics
    GTW Gross Train Weight
    GV Governor Valve
    GVW Gross Vehicle Weight
    HC Hydrocarbons
    HFC HydroFlouoroCarbons
    HGV Heavy Goods Vehicle
    HO2S Heated Oxygen Sensor
    HUCR Highest Useful Compression Ratio
    HVAC Heating, Ventilation and Air Conditioning
    IAC Idle Air Control valve
    ID Inside Diameter
    IFS Independent front Suspension
    IHP Indicated Horse Power
    INJ Injection (timing)
    IOE Inlet Over Exhaust (valve layout)
    IRS Independent Rear Suspension
    ISC Idle Speed Controller
    ISCV Idle Speed Control Valve
    IVC Inlet Valve Close
    IVO Inlet Valve Open
    KNOCK Detonation Sensor
    KPI King Pin Inclination
    LGV Large Goods vehicle
    LI Load Index
    LS Leading Shoe ( brakes )
    MAF Mass Air Flow
    MAP Manifold Absolute Pressure
    MAT Manifold Air Temperature
    MFI Multiport Fuel Injection
    MIL Malfunction Indicator Lamp
    MOFT Minimum Oil Film Thickness
    MON Motor Octane Number
    MPI Multi Point Injection
    MPV Multi Purpose Vehicle
    MRL Maintenance Reminder Light
    NO Nitrogen Oxide
    NOS New Old Stock
    NOX Nitrogen Oxide
    NO2 Nitrous Oxide (GO FAST)
    NVH Noise Vibration Harshness
    O2 Oxygen sensor
    OBD On Board Diagnostics
    OD Outside Diameter
    OD Over Drive
    ODP Ozone Depletion Potential
    OHC Overhead Camshaft
    OHV Overhead Valve
    ON Octane Number
    PAS Power Assisted System
    PBD PolyButaDiene ( tires)
    PCM Power Control Module
    PCV Positive Crankcase ventilation
    PFE Pressure Feedback EGO
    PFI Port Fuel Injection
    PIP Profile Ignition Pickup
    PR Ply Rating
    PSI Pounds per Square Inch
    PTFE PolytetraflouoroEthylene
    PTO Power Take Off
    RC Roll Center
    RON Research Octane Number
    RTV Room Temperature Vulcanizing
    RWD Rear Wheel Drive
    SAMT Semi Automated Mechanical Transmission
    SBR Styrene Butadiene (tires)
    SCA Supplemental Coolant Additives
    SCS Stop Control System
    SEFI Sequential Electronically controlled Fuel Injection
    SFC Specific Fuel Consumption
    SFI Sequential Fuel Injection
    SI Spark Ignition
    SIL Shift Indicator Light
    SLA Short and Long Arm suspension
    SM Step Motor
    SOHC Single Overhead Camshaft
    SPI Single Point Injection
    SPOUT Spark Output Signal
    SRI Service Reminder Indicator
    SS Speed Sensor
    STAR Self-test Automatic Readout
    STO Self Test Output
    SV Side Valves
    TAC Thermostatic Air Cleaner
    TADS Thermactor Air Diverter Solenoid
    TAS Throttle Angle Sensor
    TBI Throttle Body Injection
    TC Twin Carburetors
    TCC Torque Converter Solenoid
    TCI Transistorized Coil Ignition
    TCM Transmission Control Module
    TCS Transmission Controlled Spark
    TDC Top Dead Center
    TDI Turbocharged Direct Injection
    TEL Tetraethyl Lead
    TML TetraMethylLead
    TPS Throttle Position Sensor
    TS Trailing shoe
    TSS Transmission Speed Sensor
    TV Throttle Valve
    TVS Thermal Vacuum Switch
    TWC Three Way Catalyst
    TXV Thermostatic expansion Valve
    UJ Universal Joint
    VAF Vane Overflow Sensor
    VAT Vane Air Temperature Sensor
    VCP Variable Cam Phasing
    VCU Viscous Coupling Unit
    VDC Vehicle Dynamics Control
    VI Viscosity Index
    VIVT Variable Inlet Valve
    VOM Volt/Ohm Meter
    VSS Vehicle Speed Sensor
    WDS Wastegate Duty Solenoid
    WOT Wide Open Throttle
  2. nickb2

    nickb2 Wrench. I help when I can

    Nov 22, 2008
    Likes Received:
    Diagnostic tech
    St-Hyacinthe, Quebec, Canada

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