Yandex MC
GENERAL INFORMATION Commonly Used Abbreviations <meta name="InColGX" content=""> </head> <body bgcolor="white" text="black"> <h1>GENERAL INFORMATION</h1> <h1>Commonly Used Abbreviations</h1><a name="S04356880162007120600000"></a><h2 class="clsHeadOne">* PLEASE READ THIS FIRST *</h2> <p><span class="clsNote"><table> <tr> <td class="clsNoteLabel"><span>NOTE:</span></td> <td>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.</td> </tr> </table></span></p><a name="S20933953482000031700000"></a><h2 class="clsHeadOne">"A"</h2> <dl> <dt><span class="clsTermLabel">A</span></dt> <dd> <p>Amperes</p> </dd> <dt><span class="clsTermLabel">ABS</span></dt> <dd> <p>Anti-Lock Brakes</p> </dd> <dt><span class="clsTermLabel">ABRS</span></dt> <dd> <p>Air Bag Restraint System</p> </dd> <dt><span class="clsTermLabel">AC</span></dt> <dd> <p>Alternating Current</p> </dd> <dt><span class="clsTermLabel">A/C</span></dt> <dd> <p>Air Conditioning</p> </dd> <dt><span class="clsTermLabel">ACCS</span></dt> <dd> <p>A/C Cycling Switch</p> </dd> <dt><span class="clsTermLabel">ACCUM</span></dt> <dd> <p>Accumulator</p> </dd> <dt><span class="clsTermLabel">ACCY</span></dt> <dd> <p>Accessory</p> </dd> <dt><span class="clsTermLabel">ACT</span></dt> <dd> <p>Air Charge Temperature Sensor</p> </dd> <dt><span class="clsTermLabel">ADJ</span></dt> <dd> <p>Adjust or Adjustable</p> </dd> <dt><span class="clsTermLabel">ADV</span></dt> <dd> <p>Advance</p> </dd> <dt><span class="clsTermLabel">AFS</span></dt> <dd> <p>Airflow Sensor</p> </dd> <dt><span class="clsTermLabel">AI</span></dt> <dd> <p>Air Injection</p> </dd> <dt><span class="clsTermLabel">AIR or A.I.R.</span></dt> <dd> <p>Air Injection Reactor</p> </dd> <dt><span class="clsTermLabel">AIS</span></dt> <dd> <p>Air Injection System</p> </dd> <dt><span class="clsTermLabel">Alt.</span></dt> <dd> <p>Alternator or Altitude</p> </dd> <dt><span class="clsTermLabel">Amp./amp/amps</span></dt> <dd> <p>Ampere</p> </dd> <dt><span class="clsTermLabel">ASCS</span></dt> <dd> <p>Air Suction Control Solenoid</p> </dd> <dt><span class="clsTermLabel">ASD</span></dt> <dd> <p>Auto Shutdown</p> </dd> <dt><span class="clsTermLabel">ASDM</span></dt> <dd> <p>Air Bag System Diagnostic Module</p> </dd> <dt><span class="clsTermLabel">ASV</span></dt> <dd> <p>Air Suction Valve</p> </dd> <dt><span class="clsTermLabel">A/T</span></dt> <dd> <p>Automatic Transmission/Transaxle</p> </dd> <dt><span class="clsTermLabel">ATC</span></dt> <dd> <p>Automatic Temperature Control</p> </dd> <dt><span class="clsTermLabel">ATDC</span></dt> <dd> <p>After Top Dead Center</p> </dd> <dt><span class="clsTermLabel">ATF</span></dt> <dd> <p>Automatic Transmission Fluid</p> </dd> <dt><span class="clsTermLabel">ATS</span></dt> <dd> <p>Air Temperature Sensor</p> </dd> <dt><span class="clsTermLabel">Aux.</span></dt> <dd> <p>Auxiliary</p> </dd> <dt><span class="clsTermLabel">Avg.</span></dt> <dd> <p>Average</p> </dd> <dt><span class="clsTermLabel">AXOD</span></dt> <dd> <p>Automatic Transaxle Overdrive (Ford Models Only)</p> </dd> </dl><a name="S28712749562000031700000"></a><h2 class="clsHeadOne">"B"</h2> <dl> <dt><span class="clsTermLabel">BAC</span></dt> <dd> <p>By-Pass Air Control</p> </dd> <dt><span class="clsTermLabel">BAP</span></dt> <dd> <p>Barometric Absolute Pressure Sensor</p> </dd> <dt><span class="clsTermLabel">BARO</span></dt> <dd> <p>Barometric</p> </dd> <dt><span class="clsTermLabel">Batt.</span></dt> <dd> <p>Battery</p> </dd> <dt><span class="clsTermLabel">Bbl.</span></dt> <dd> <p>Barrel (Example: 4-Bbl.)</p> </dd> <dt><span class="clsTermLabel">BCM</span></dt> <dd> <p>Body Control Module</p> </dd> <dt><span class="clsTermLabel">BHP</span></dt> <dd> <p>Brake Horsepower</p> </dd> <dt><span class="clsTermLabel">BMAP</span></dt> <dd> <p>Barometric and Manifold Absolute Pressure Sensor</p> </dd> <dt><span class="clsTermLabel">BOO</span></dt> <dd> <p>Brake On-Off Switch</p> </dd> <dt><span class="clsTermLabel">B/P</span></dt> <dd> <p>Backpressure</p> </dd> <dt><span class="clsTermLabel">BPS</span></dt> <dd> <p>Barometric Pressure Sensor</p> </dd> <dt><span class="clsTermLabel">BPT</span></dt> <dd> <p>Backpressure Transducer</p> </dd> <dt><span class="clsTermLabel">BTDC</span></dt> <dd> <p>Before Top Dead Center</p> </dd> <dt><span class="clsTermLabel">BTSI</span></dt> <dd> <p>Brake Transmission Shift Interlock</p> </dd> <dt><span class="clsTermLabel">BTU</span></dt> <dd> <p>British Thermal Unit</p> </dd> <dt><span class="clsTermLabel">BVSV</span></dt> <dd> <p>Bimetallic Vacuum Switching Valve</p> </dd> </dl><a name="S01417327092000031700000"></a><h2 class="clsHeadOne">"C"</h2> <dl> <dt><span class="clsTermLabel">° C</span></dt> <dd> <p>Celsius (Degrees)</p> </dd> <dt><span class="clsTermLabel">Calif.</span></dt> <dd> <p>California</p> </dd> <dt><span class="clsTermLabel">CANP</span></dt> <dd> <p>Canister Purge</p> </dd> <dt><span class="clsTermLabel">CARB</span></dt> <dd> <p>California Air Resources Board</p> </dd> <dt><span class="clsTermLabel">CAT</span></dt> <dd> <p>Catalytic Converter</p> </dd> <dt><span class="clsTermLabel">CB</span></dt> <dd> <p>Circuit Breaker</p> </dd> <dt><span class="clsTermLabel">CBD</span></dt> <dd> <p>Closed Bowl Distributor</p> </dd> <dt><span class="clsTermLabel">cc</span></dt> <dd> <p>cubic centimeter</p> </dd> <dt><span class="clsTermLabel">CCC</span></dt> <dd> <p>Close Coupled Catalyst</p> </dd> <dt><span class="clsTermLabel">CCC</span></dt> <dd> <p>Computer Command Control</p> </dd> <dt><span class="clsTermLabel">CCD</span></dt> <dd> <p>Computer Controlled Dwell</p> </dd> <dt><span class="clsTermLabel">CCOT</span></dt> <dd> <p>Cycling Clutch Orifice Tube</p> </dd> <dt><span class="clsTermLabel">CCW</span></dt> <dd> <p>Counterclockwise</p> </dd> <dt><span class="clsTermLabel">CDI</span></dt> <dd> <p>Capacitor Discharge Ignition</p> </dd> <dt><span class="clsTermLabel">CEC</span></dt> <dd> <p>Computerized Engine Control</p> </dd> <dt><span class="clsTermLabel">CID</span></dt> <dd> <p>Cubic Inch Displacement</p> </dd> <dt><span class="clsTermLabel">cm</span></dt> <dd> <p>Centimeter</p> </dd> <dt><span class="clsTermLabel">CMP</span></dt> <dd> <p>Camshaft Position Sensor</p> </dd> <dt><span class="clsTermLabel">CO</span></dt> <dd> <p>Carbon Monoxide</p> </dd> <dt><span class="clsTermLabel">CO<sub>2</sub> </span></dt> <dd> <p>Carbon Dioxide</p> </dd> <dt><span class="clsTermLabel">Cont.</span></dt> <dd> <p>Continued</p> </dd> <dt><span class="clsTermLabel">CONV</span></dt> <dd> <p>Convertible</p> </dd> <dt><span class="clsTermLabel">CP</span></dt> <dd> <p>Canister Purge</p> </dd> <dt><span class="clsTermLabel">CKP</span></dt> <dd> <p>Crankshaft Position Sensor</p> </dd> <dt><span class="clsTermLabel">CTS</span></dt> <dd> <p>Coolant Temperature Sensor</p> </dd> <dt><span class="clsTermLabel">Cu. In.</span></dt> <dd> <p>Cubic Inch</p> </dd> <dt><span class="clsTermLabel">CVC</span></dt> <dd> <p>Constant Vacuum Control</p> </dd> <dt><span class="clsTermLabel">CV</span></dt> <dd> <p>Check Valve or Constant Velocity</p> </dd> <dt><span class="clsTermLabel">CW</span></dt> <dd> <p>Clockwise</p> </dd> <dt><span class="clsTermLabel">CYL or Cyl.</span></dt> <dd> <p>Cylinder</p> </dd> <dt><span class="clsTermLabel">C<sup>3</sup> I</span></dt> <dd> <p>Computer Controlled Coil Ignition</p> </dd> <dt><span class="clsTermLabel">C<sup>4</sup> </span></dt> <dd> <p>Computer Controlled Catalytic Converter</p> </dd> </dl><a name="S37507674212000031700000"></a><h2 class="clsHeadOne">"D"</h2> <dl> <dt><span class="clsTermLabel">"D"</span></dt> <dd> <p>Drive</p> </dd> <dt><span class="clsTermLabel">DC</span></dt> <dd> <p>Direct Current Or Discharge</p> </dd> <dt><span class="clsTermLabel">DDD</span></dt> <dd> <p>Dual Diaphragm Distributor</p> </dd> <dt><span class="clsTermLabel">Def.</span></dt> <dd> <p>Defrost</p> </dd> <dt><span class="clsTermLabel">Defog.</span></dt> <dd> <p>Defogger</p> </dd> <dt><span class="clsTermLabel">DERM</span></dt> <dd> <p>Diagnostic Energy Reserve Module</p> </dd> <dt><span class="clsTermLabel">DFI</span></dt> <dd> <p>Digital Fuel Injection</p> </dd> <dt><span class="clsTermLabel">Diag.</span></dt> <dd> <p>Diagnostic</p> </dd> <dt><span class="clsTermLabel">DTC</span></dt> <dd> <p>Diagnostic Trouble Code</p> </dd> <dt><span class="clsTermLabel">DIC</span></dt> <dd> <p>Driver Information Center</p> </dd> <dt><span class="clsTermLabel">DIS</span></dt> <dd> <p>Distributorless Ignition System</p> </dd> <dt><span class="clsTermLabel">DIST</span></dt> <dd> <p>Distribution</p> </dd> <dt><span class="clsTermLabel">DLC</span></dt> <dd> <p>Data Link Connector</p> </dd> <dt><span class="clsTermLabel">DOC</span></dt> <dd> <p>Diesel Oxidation Catalyst</p> </dd> <dt><span class="clsTermLabel">DOHC</span></dt> <dd> <p>Double Overhead Cam</p> </dd> <dt><span class="clsTermLabel">DOT</span></dt> <dd> <p>Department of Transportation</p> </dd> <dt><span class="clsTermLabel">DPF</span></dt> <dd> <p>Diesel Particulate Filter</p> </dd> <dt><span class="clsTermLabel">DRB-II</span></dt> <dd> <p>Diagnostic Readout Box</p> </dd> <dt><span class="clsTermLabel">DVOM</span></dt> <dd> <p>Digital Volt-Ohmmeter</p> </dd> </dl><a name="S26182773632000031700000"></a><h2 class="clsHeadOne">"E"</h2> <dl> <dt><span class="clsTermLabel">EACV</span></dt> <dd> <p>Electric Air Control Valve</p> </dd> <dt><span class="clsTermLabel">EATX</span></dt> <dd> <p>Electronic Automatic Transaxle</p> </dd> <dt><span class="clsTermLabel">EBCM</span></dt> <dd> <p>Electronic Brake Control Module</p> </dd> <dt><span class="clsTermLabel">EBL</span></dt> <dd> <p>Electronic Back Light</p> </dd> <dt><span class="clsTermLabel">ECM</span></dt> <dd> <p>Engine Control Module</p> </dd> <dt><span class="clsTermLabel">ECT</span></dt> <dd> <p>Engine Coolant Temperature Sensor</p> </dd> <dt><span class="clsTermLabel">EDIS</span></dt> <dd> <p>Electronic Distributorless Ignition System</p> </dd> <dt><span class="clsTermLabel">EEC</span></dt> <dd> <p>Electronic Engine Control</p> </dd> <dt><span class="clsTermLabel">EECS</span></dt> <dd> <p>Evaporative Emission Control System</p> </dd> <dt><span class="clsTermLabel">EEPROM</span></dt> <dd> <p>Electronically Erasable PROM</p> </dd> <dt><span class="clsTermLabel">EFE</span></dt> <dd> <p>Early Fuel Evaporation</p> </dd> <dt><span class="clsTermLabel">EGO</span></dt> <dd> <p>Exhaust Gas Oxygen Sensor</p> </dd> <dt><span class="clsTermLabel">EGR</span></dt> <dd> <p>Exhaust Gas Recirculation</p> </dd> <dt><span class="clsTermLabel">EOT</span></dt> <dd> <p>Engine Oil Temperature</p> </dd> <dt><span class="clsTermLabel">ESA</span></dt> <dd> <p>Electronic Spark Advance</p> </dd> <dt><span class="clsTermLabel">ESC</span></dt> <dd> <p>Electronic Spark Control</p> </dd> <dt><span class="clsTermLabel">EST</span></dt> <dd> <p>Electronic Spark Timing</p> </dd> <dt><span class="clsTermLabel">EVAP</span></dt> <dd> <p>Fuel Evaporative System</p> </dd> <dt><span class="clsTermLabel">EVIC</span></dt> <dd> <p>Electronic Vehicle Information Center</p> </dd> <dt><span class="clsTermLabel">EVP</span></dt> <dd> <p>EGR Valve Position Sensor</p> </dd> <dt><span class="clsTermLabel">EWMA</span></dt> <dd> <p>Exponentially Weighted Moving Average (MODE 6)</p> </dd> <dt><span class="clsTermLabel">Exc.</span></dt> <dd> <p>Except</p> </dd> </dl><a name="S12738390192000031700000"></a><h2 class="clsHeadOne">"F"</h2> <dl> <dt><span class="clsTermLabel">° F</span></dt> <dd> <p>Fahrenheit (Degrees)</p> </dd> <dt><span class="clsTermLabel">F/B</span></dt> <dd> <p>Fuse Block</p> </dd> <dt><span class="clsTermLabel">Fed.</span></dt> <dd> <p>Federal</p> </dd> <dt><span class="clsTermLabel">FI</span></dt> <dd> <p>Fuel Injection</p> </dd> <dt><span class="clsTermLabel">FICU</span></dt> <dd> <p>Fuel Injection Control Unit</p> </dd> <dt><span class="clsTermLabel">FIPL</span></dt> <dd> <p>Fuel Injector Pump Lever</p> </dd> <dt><span class="clsTermLabel">FLI</span></dt> <dd> <p>Fuel Level Indicator</p> </dd> <dt><span class="clsTermLabel">FPR-VSV</span></dt> <dd> <p>Fuel Pressure Regulator Vacuum Switching Valve</p> </dd> <dt><span class="clsTermLabel">Ft. Lbs.</span></dt> <dd> <p>Foot Pounds</p> </dd> <dt><span class="clsTermLabel">FWD</span></dt> <dd> <p>Front Wheel Drive</p> </dd> </dl><a name="S09735981402000031700000"></a><h2 class="clsHeadOne">"G"</h2> <dl> <dt><span class="clsTermLabel">g</span></dt> <dd> <p>grams</p> </dd> <dt><span class="clsTermLabel">Gals.</span></dt> <dd> <p>gallons</p> </dd> <dt><span class="clsTermLabel">GND or GRND</span></dt> <dd> <p>Ground</p> </dd> </dl><a name="S39912360682000031700000"></a><h2 class="clsHeadOne">"H"</h2> <dl> <dt><span class="clsTermLabel">HAC</span></dt> <dd> <p>High Altitude Compensation</p> </dd> <dt><span class="clsTermLabel">HC</span></dt> <dd> <p>Hydrocarbons</p> </dd> <dt><span class="clsTermLabel">H/D</span></dt> <dd> <p>Heavy Duty</p> </dd> <dt><span class="clsTermLabel">HO2S</span></dt> <dd> <p>Heated Exhaust Gas Oxygen Sensor</p> </dd> <dt><span class="clsTermLabel">Hg</span></dt> <dd> <p>Mercury</p> </dd> <dt><span class="clsTermLabel">Hgt.</span></dt> <dd> <p>Height</p> </dd> <dt><span class="clsTermLabel">HLDT</span></dt> <dd> <p>Headlight</p> </dd> <dt><span class="clsTermLabel">HO</span></dt> <dd> <p>High Output</p> </dd> <dt><span class="clsTermLabel">HO2S</span></dt> <dd> <p>Heated Oxygen Sensor</p> </dd> <dt><span class="clsTermLabel">HP</span></dt> <dd> <p>High Performance</p> </dd> <dt><span class="clsTermLabel">HSC</span></dt> <dd> <p>High Swirl Combustion</p> </dd> <dt><span class="clsTermLabel">HSO</span></dt> <dd> <p>High Specific Output</p> </dd> <dt><span class="clsTermLabel">HTR</span></dt> <dd> <p>Heater</p> </dd> <dt><span class="clsTermLabel">Hz</span></dt> <dd> <p>Hertz (Cycles Per Second)</p> </dd> </dl><a name="S13204140292000031700000"></a><h2 class="clsHeadOne">"I"</h2> <dl> <dt><span class="clsTermLabel">IAC</span></dt> <dd> <p>Idle Air Control</p> </dd> <dt><span class="clsTermLabel">IACV</span></dt> <dd> <p>Idle Air Control Valve</p> </dd> <dt><span class="clsTermLabel">IAT</span></dt> <dd> <p>Intake Air Temperature</p> </dd> <dt><span class="clsTermLabel">IC</span></dt> <dd> <p>Integrated Circuit</p> </dd> <dt><span class="clsTermLabel">ID</span></dt> <dd> <p>Identification</p> </dd> <dt><span class="clsTermLabel">I.D.</span></dt> <dd> <p>Inside Diameter</p> </dd> <dt><span class="clsTermLabel">IFS</span></dt> <dd> <p>Independant Front Suspension</p> </dd> <dt><span class="clsTermLabel">IFS</span></dt> <dd> <p>Inertia Fuel Shutoff (Ford)</p> </dd> <dt><span class="clsTermLabel">Ign.</span></dt> <dd> <p>Ignition</p> </dd> <dt><span class="clsTermLabel">IMRC</span></dt> <dd> <p>Intake Manifold Runner Control</p> </dd> <dt><span class="clsTermLabel">In.</span></dt> <dd> <p>Inches</p> </dd> <dt><span class="clsTermLabel">INCH Lbs.</span></dt> <dd> <p>Inch Pounds</p> </dd> <dt><span class="clsTermLabel">in. Hg</span></dt> <dd> <p>Inches of Mercury</p> </dd> <dt><span class="clsTermLabel">Inj.</span></dt> <dd> <p>Injector</p> </dd> <dt><span class="clsTermLabel">IP</span></dt> <dd> <p>Instrument Panel</p> </dd> <dt><span class="clsTermLabel">IRS</span></dt> <dd> <p>Independant Rear Suspension</p> </dd> <dt><span class="clsTermLabel">ISC</span></dt> <dd> <p>Idle Speed Control</p> </dd> <dt><span class="clsTermLabel">IVD</span></dt> <dd> <p>Interactive Vehicle Dynamics (Ford)</p> </dd> <dt><span class="clsTermLabel">IVSV</span></dt> <dd> <p>Idle Vacuum Switching Valve</p> </dd> </dl><a name="S25722498772000031700000"></a><h2 class="clsHeadOne">"J"</h2> <dl> <dt><span class="clsTermLabel">J/B</span></dt> <dd> <p>Junction Block</p> </dd> </dl><a name="S35473245102000031700000"></a><h2 class="clsHeadOne">"K"</h2> <dl> <dt><span class="clsTermLabel">KAPWR</span></dt> <dd> <p>Keep Alive Power</p> </dd> <dt><span class="clsTermLabel">k/ohms</span></dt> <dd> <p>kilo-ohms (1000 ohms)</p> </dd> <dt><span class="clsTermLabel">kg</span></dt> <dd> <p>Kilograms (weight)</p> </dd> <dt><span class="clsTermLabel">kg/cm<sup>2</sup> </span></dt> <dd> <p>Kilograms Per Square Centimeter</p> </dd> <dt><span class="clsTermLabel">KM/H</span></dt> <dd> <p>Kilometers Per Hour</p> </dd> <dt><span class="clsTermLabel">KOEO</span></dt> <dd> <p>Key On, Engine Off</p> </dd> <dt><span class="clsTermLabel">KOER</span></dt> <dd> <p>Key On, Engine Running</p> </dd> <dt><span class="clsTermLabel">KS</span></dt> <dd> <p>Knock Sensor</p> </dd> <dt><span class="clsTermLabel">kW</span></dt> <dd> <p>Kilowatt</p> </dd> <dt><span class="clsTermLabel">kV</span></dt> <dd> <p>Kilovolt</p> </dd> </dl><a name="S00763740222000031700000"></a><h2 class="clsHeadOne">"L"</h2> <dl> <dt><span class="clsTermLabel">L</span></dt> <dd> <p>Liter</p> </dd> <dt><span class="clsTermLabel">lbs. (Lbs. when used in table)</span></dt> <dd> <p>Pounds</p> </dd> <dt><span class="clsTermLabel">LCD</span></dt> <dd> <p>Liquid Crystal Display</p> </dd> <dt><span class="clsTermLabel">L/D</span></dt> <dd> <p>Light Duty</p> </dd> <dt><span class="clsTermLabel">LDP</span></dt> <dd> <p>Leak Detection Pump (Part of EVAP system.)</p> </dd> <dt><span class="clsTermLabel">LED</span></dt> <dd> <p>Light Emitting Diode</p> </dd> <dt><span class="clsTermLabel">LH</span></dt> <dd> <p>Left Hand</p> </dd> </dl><a name="S28162065112000031700000"></a><h2 class="clsHeadOne">"M"</h2> <dl> <dt><span class="clsTermLabel">mA</span></dt> <dd> <p>Milliamps</p> </dd> <dt><span class="clsTermLabel">MA or MAF</span></dt> <dd> <p>Mass Airflow</p> </dd> <dt><span class="clsTermLabel">MAFS</span></dt> <dd> <p>Mass Airflow Sensor</p> </dd> <dt><span class="clsTermLabel">MAP</span></dt> <dd> <p>Manifold Absolute Pressure</p> </dd> <dt><span class="clsTermLabel">MAT</span></dt> <dd> <p>Manifold Air Temperature</p> </dd> <dt><span class="clsTermLabel">Mem.</span></dt> <dd> <p>Memory</p> </dd> <dt><span class="clsTermLabel">MEM-CAL</span></dt> <dd> <p>Memory Calibration Chip</p> </dd> <dt><span class="clsTermLabel">mfd.</span></dt> <dd> <p>Microfarads</p> </dd> <dt><span class="clsTermLabel">MFI</span></dt> <dd> <p>Multiport Fuel Injection</p> </dd> <dt><span class="clsTermLabel">MICU</span></dt> <dd> <p>Multiplex Integrated Control Unit (Acura/Honda)</p> </dd> <dt><span class="clsTermLabel">MIL</span></dt> <dd> <p>Malfunction Indicator Light</p> </dd> <dt><span class="clsTermLabel">MPI</span></dt> <dd> <p>Multi-Point (Fuel) Injection</p> </dd> <dt><span class="clsTermLabel">mm</span></dt> <dd> <p>Millimeters</p> </dd> <dt><span class="clsTermLabel">MPH</span></dt> <dd> <p>Miles Per Hour</p> </dd> <dt><span class="clsTermLabel">mV</span></dt> <dd> <p>Millivolts</p> </dd> </dl><a name="S18828101032000031700000"></a><h2 class="clsHeadOne">"N"</h2> <dl> <dt><span class="clsTermLabel">NA</span></dt> <dd> <p>Not Available</p> </dd> <dt><span class="clsTermLabel">NAC</span></dt> <dd> <p>NOx Adsorber Catalyst</p> </dd> <dt><span class="clsTermLabel">NCA</span></dt> <dd> <p>No Color Available (Wiring Diagrams)</p> </dd> <dt><span class="clsTermLabel">NGS</span></dt> <dd> <p>New Generation Star</p> </dd> <dt><span class="clsTermLabel">N.m</span></dt> <dd> <p>Newton Meter</p> </dd> <dt><span class="clsTermLabel">No.</span></dt> <dd> <p>Number</p> </dd> <dt><span class="clsTermLabel">Nos.</span></dt> <dd> <p>Numbers</p> </dd> <dt><span class="clsTermLabel">NOx</span></dt> <dd> <p>Oxides of Nitrogen</p> </dd> </dl><a name="S08665784892000031700000"></a><h2 class="clsHeadOne">"O"</h2> <dl> <dt><span class="clsTermLabel">O<sub>2</sub> </span></dt> <dd> <p>Oxygen</p> </dd> <dt><span class="clsTermLabel">OBD</span></dt> <dd> <p>On-Board Diagnostics</p> </dd> <dt><span class="clsTermLabel">OC</span></dt> <dd> <p>Oxidation Catalyst</p> </dd> <dt><span class="clsTermLabel">OD</span></dt> <dd> <p>Overdrive</p> </dd> <dt><span class="clsTermLabel">O.D.</span></dt> <dd> <p>Outside Diameter</p> </dd> <dt><span class="clsTermLabel">OHC</span></dt> <dd> <p>Overhead Camshaft</p> </dd> <dt><span class="clsTermLabel">OSS</span></dt> <dd> <p>Output Speed Sensor</p> </dd> <dt><span class="clsTermLabel">O/S</span></dt> <dd> <p>Oversize</p> </dd> <dt><span class="clsTermLabel">oz.</span></dt> <dd> <p>Ounce</p> </dd> <dt><span class="clsTermLabel">ozs.</span></dt> <dd> <p>Ounces</p> </dd> </dl><a name="S38296904652000031700000"></a><h2 class="clsHeadOne">"P"</h2> <dl> <dt><span class="clsTermLabel">"P"</span></dt> <dd> <p>Park</p> </dd> <dt><span class="clsTermLabel">P/C</span></dt> <dd> <p>Printed Circuit</p> </dd> <dt><span class="clsTermLabel">PCM</span></dt> <dd> <p>Powertrain Control Module</p> </dd> <dt><span class="clsTermLabel">PCS</span></dt> <dd> <p>Purge Control Solenoid</p> </dd> <dt><span class="clsTermLabel">PC-SOL</span></dt> <dd> <p>Purge Control Solenoid</p> </dd> <dt><span class="clsTermLabel">PCV</span></dt> <dd> <p>Positive Crankcase Ventilation</p> </dd> <dt><span class="clsTermLabel">PFI</span></dt> <dd> <p>Port Fuel Injection</p> </dd> <dt><span class="clsTermLabel">PGM-FI</span></dt> <dd> <p>Programmed Fuel Injection</p> </dd> <dt><span class="clsTermLabel">PID</span></dt> <dd> <p>Parameter Identification</p> </dd> <dt><span class="clsTermLabel">PIP</span></dt> <dd> <p>Profile Ignition Pick-up</p> </dd> <dt><span class="clsTermLabel">PNP</span></dt> <dd> <p>Park Neutral Position Switch</p> </dd> <dt><span class="clsTermLabel">P/N</span></dt> <dd> <p>Park/Neutral</p> </dd> <dt><span class="clsTermLabel">PRNDL</span></dt> <dd> <p>Park Reverse Neutral Drive Low</p> </dd> <dt><span class="clsTermLabel">PROM</span></dt> <dd> <p>Programmable Read-Only Memory</p> </dd> <dt><span class="clsTermLabel">psi</span></dt> <dd> <p>Pounds Per Square Inch</p> </dd> <dt><span class="clsTermLabel">P/S</span></dt> <dd> <p>Power Steering</p> </dd> <dt><span class="clsTermLabel">PSPS</span></dt> <dd> <p>Power Steering Pressure Switch</p> </dd> <dt><span class="clsTermLabel">PTC</span></dt> <dd> <p>Positive Temperature Coefficient</p> </dd> <dt><span class="clsTermLabel">PTO</span></dt> <dd> <p>Power Take-Off</p> </dd> <dt><span class="clsTermLabel">Pts.</span></dt> <dd> <p>Pints</p> </dd> <dt><span class="clsTermLabel">Pwr.</span></dt> <dd> <p>Power</p> </dd> </dl><a name="S16001820102000031700000"></a><h2 class="clsHeadOne">"Q"</h2> <dl> <dt><span class="clsTermLabel">Qts.</span></dt> <dd> <p>Quarts</p> </dd> </dl><a name="S22902432342000031700000"></a><h2 class="clsHeadOne">"R"</h2> <dl> <dt><span class="clsTermLabel">RABS</span></dt> <dd> <p>Rear Anti-Lock Brake System</p> </dd> <dt><span class="clsTermLabel">RECIRC</span></dt> <dd> <p>Recirculation</p> </dd> <dt><span class="clsTermLabel">RH</span></dt> <dd> <p>Right Hand</p> </dd> <dt><span class="clsTermLabel">RPM</span></dt> <dd> <p>Revolutions Per Minute</p> </dd> <dt><span class="clsTermLabel">RWAL</span></dt> <dd> <p>Rear Wheel Anti-Lock Brake</p> </dd> <dt><span class="clsTermLabel">RWD</span></dt> <dd> <p>Rear Wheel Drive</p> </dd> </dl><a name="S07353671792000031700000"></a><h2 class="clsHeadOne">"S"</h2> <dl> <dt><span class="clsTermLabel">SAS</span></dt> <dd> <p>Steering Angle Sensor</p> </dd> <dt><span class="clsTermLabel">SBC</span></dt> <dd> <p>Single Bed Converter</p> </dd> <dt><span class="clsTermLabel">SBEC</span></dt> <dd> <p>Single Board Engine Controller</p> </dd> <dt><span class="clsTermLabel">SDARS</span></dt> <dd> <p>Satellite Digital Audio Radio Service</p> </dd> <dt><span class="clsTermLabel">SES</span></dt> <dd> <p>Service Engine Soon</p> </dd> <dt><span class="clsTermLabel">SFI</span></dt> <dd> <p>Sequential (Port) Fuel Injection</p> </dd> <dt><span class="clsTermLabel">SIL</span></dt> <dd> <p>Shift Indicator Light</p> </dd> <dt><span class="clsTermLabel">SIR</span></dt> <dd> <p>Supplemental Inflatable Restraint</p> </dd> <dt><span class="clsTermLabel">SOHC</span></dt> <dd> <p>Single Overhead Cam</p> </dd> <dt><span class="clsTermLabel">SOL or Sol.</span></dt> <dd> <p>Solenoid</p> </dd> <dt><span class="clsTermLabel">SPFI</span></dt> <dd> <p>Sequential Port Fuel Injection</p> </dd> <dt><span class="clsTermLabel">SPK</span></dt> <dd> <p>Spark Control</p> </dd> <dt><span class="clsTermLabel">SPOUT</span></dt> <dd> <p>Spark Output</p> </dd> <dt><span class="clsTermLabel">SRI</span></dt> <dd> <p>Service Reminder Indicator</p> </dd> <dt><span class="clsTermLabel">SRS</span></dt> <dd> <p>Supplemental Restraint System (Air Bag)</p> </dd> <dt><span class="clsTermLabel">STAR</span></dt> <dd> <p>Self-Test Automatic Readout</p> </dd> <dt><span class="clsTermLabel">STO</span></dt> <dd> <p>Self-Test Output</p> </dd> <dt><span class="clsTermLabel">SUB-O<sub>2</sub> </span></dt> <dd> <p>Sub Oxygen Sensor</p> </dd> <dt><span class="clsTermLabel">Sw.</span></dt> <dd> <p>Switch</p> </dd> <dt><span class="clsTermLabel">Sys.</span></dt> <dd> <p>System</p> </dd> </dl><a name="S42314179392000031700000"></a><h2 class="clsHeadOne">"T"</h2> <dl> <dt><span class="clsTermLabel">TAB</span></dt> <dd> <p>Thermactor Air By-Pass</p> </dd> <dt><span class="clsTermLabel">TAC</span></dt> <dd> <p>Throttle Actuator Module</p> </dd> <dt><span class="clsTermLabel">TAD</span></dt> <dd> <p>Thermactor Air Diverter</p> </dd> <dt><span class="clsTermLabel">TBC</span></dt> <dd> <p>Body Control Module (General Motors)</p> </dd> <dt><span class="clsTermLabel">TBI</span></dt> <dd> <p>Throttle Body Injection</p> </dd> <dt><span class="clsTermLabel">TCC</span></dt> <dd> <p>Torque Converter Clutch</p> </dd> <dt><span class="clsTermLabel">TDC</span></dt> <dd> <p>Top Dead Center</p> </dd> <dt><span class="clsTermLabel">Temp.</span></dt> <dd> <p>Temperature</p> </dd> <dt><span class="clsTermLabel">TFI</span></dt> <dd> <p>Thick Film Ignition</p> </dd> <dt><span class="clsTermLabel">THERMAC</span></dt> <dd> <p>Thermostatic Air Cleaner</p> </dd> <dt><span class="clsTermLabel">TPM</span></dt> <dd> <p>Tire Pressure Monitor</p> </dd> <dt><span class="clsTermLabel">TPMS</span></dt> <dd> <p>Tire Pressure Monitor System</p> </dd> <dt><span class="clsTermLabel">TPS</span></dt> <dd> <p>Throttle Position Sensor/Switch</p> </dd> <dt><span class="clsTermLabel">TS</span></dt> <dd> <p>Temperature Sensor</p> </dd> <dt><span class="clsTermLabel">TV</span></dt> <dd> <p>Thermovalve</p> </dd> <dt><span class="clsTermLabel">TWC</span></dt> <dd> <p>Three-Way Catalyst</p> </dd> </dl><a name="S30540336882000031700000"></a><h2 class="clsHeadOne">"V"</h2> <dl> <dt><span class="clsTermLabel">V</span></dt> <dd> <p>Valve</p> </dd> <dt><span class="clsTermLabel">Vac.</span></dt> <dd> <p>Vacuum</p> </dd> <dt><span class="clsTermLabel">VAF</span></dt> <dd> <p>Vane Airflow</p> </dd> <dt><span class="clsTermLabel">VAPS</span></dt> <dd> <p>Variable Assist Power Steering</p> </dd> <dt><span class="clsTermLabel">VCC</span></dt> <dd> <p>Viscous Converter Clutch</p> </dd> <dt><span class="clsTermLabel">VCRM</span></dt> <dd> <p>Variable Control Relay Module</p> </dd> <dt><span class="clsTermLabel">VIN</span></dt> <dd> <p>Vehicle Identification Number</p> </dd> <dt><span class="clsTermLabel">VM</span></dt> <dd> <p>Vacuum Modulator</p> </dd> <dt><span class="clsTermLabel">Volt.</span></dt> <dd> <p>Voltage</p> </dd> <dt><span class="clsTermLabel">VOM</span></dt> <dd> <p>Volt-Ohmmeter (Analog)</p> </dd> <dt><span class="clsTermLabel">VRV</span></dt> <dd> <p>Vacuum Regulator Valve</p> </dd> <dt><span class="clsTermLabel">VSS</span></dt> <dd> <p>Vehicle Speed Sensor</p> </dd> <dt><span class="clsTermLabel">VSV</span></dt> <dd> <p>Vacuum Switching Valve</p> </dd> </dl><a name="S16427487362000031700000"></a><h2 class="clsHeadOne">"W"</h2> <dl> <dt><span class="clsTermLabel">W/</span></dt> <dd> <p>With</p> </dd> <dt><span class="clsTermLabel">W/O</span></dt> <dd> <p>Without</p> </dd> <dt><span class="clsTermLabel">WAC</span></dt> <dd> <p>Wide Open Throttle A/C Switch</p> </dd> <dt><span class="clsTermLabel">WOT</span></dt> <dd> <p>Wide Open Throttle</p> </dd> </dl> </body> </html>

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COMMONLY USED ABBREVIATIONS - GENERAL INFORMATION

  • HEADINGS
    • * PLEASE READ THIS FIRST *
    • "A"
    • "B"
    • "C"
    • "D"
    • "E"
    • "F"
    • "G"
    • "H"
    • "I"
    • "J"
    • "K"
    • "L"
    • "M"
    • "N"
    • "O"
    • "P"
    • "Q"
    • "R"
    • "S"
    • "T"
    • "V"
    • "W"
  • FIGURES
  • TABLES

GENERAL INFORMATION

Commonly Used Abbreviations

* PLEASE READ THIS FIRST *

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.

"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

ADJ

Adjust or Adjustable

ADV

Advance

AFS

Airflow Sensor

AI

Air Injection

AIR or A.I.R.

Air Injection Reactor

AIS

Air Injection System

Alt.

Alternator or Altitude

Amp./amp/amps

Ampere

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

Aux.

Auxiliary

Avg.

Average

AXOD

Automatic Transaxle Overdrive (Ford Models Only)

"B"

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

BTSI

Brake Transmission Shift Interlock

BTU

British Thermal Unit

BVSV

Bimetallic Vacuum Switching Valve

"C"

° C

Celsius (Degrees)

Calif.

California

CANP

Canister Purge

CARB

California Air Resources Board

CAT

Catalytic Converter

CB

Circuit Breaker

CBD

Closed Bowl Distributor

cc

cubic centimeter

CCC

Close Coupled Catalyst

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

CTS

Coolant Temperature Sensor

Cu. In.

Cubic Inch

CVC

Constant Vacuum Control

CV

Check Valve or Constant Velocity

CW

Clockwise

CYL or Cyl.

Cylinder

C3 I

Computer Controlled Coil Ignition

C4

Computer Controlled Catalytic Converter

"D"

"D"

Drive

DC

Direct Current Or Discharge

DDD

Dual Diaphragm Distributor

Def.

Defrost

Defog.

Defogger

DERM

Diagnostic Energy Reserve Module

DFI

Digital Fuel Injection

Diag.

Diagnostic

DTC

Diagnostic Trouble Code

DIC

Driver Information Center

DIS

Distributorless Ignition System

DIST

Distribution

DLC

Data Link Connector

DOC

Diesel Oxidation Catalyst

DOHC

Double Overhead Cam

DOT

Department of Transportation

DPF

Diesel Particulate Filter

DRB-II

Diagnostic Readout Box

DVOM

Digital Volt-Ohmmeter

"E"

EACV

Electric Air Control Valve

EATX

Electronic Automatic Transaxle

EBCM

Electronic Brake Control Module

EBL

Electronic Back Light

ECM

Engine Control Module

ECT

Engine Coolant Temperature Sensor

EDIS

Electronic Distributorless Ignition System

EEC

Electronic Engine Control

EECS

Evaporative Emission Control System

EEPROM

Electronically Erasable PROM

EFE

Early Fuel Evaporation

EGO

Exhaust Gas Oxygen Sensor

EGR

Exhaust Gas Recirculation

EOT

Engine Oil Temperature

ESA

Electronic Spark Advance

ESC

Electronic Spark Control

EST

Electronic Spark Timing

EVAP

Fuel Evaporative System

EVIC

Electronic Vehicle Information Center

EVP

EGR Valve Position Sensor

EWMA

Exponentially Weighted Moving Average (MODE 6)

Exc.

Except

"F"

° F

Fahrenheit (Degrees)

F/B

Fuse Block

Fed.

Federal

FI

Fuel Injection

FICU

Fuel Injection Control Unit

FIPL

Fuel Injector Pump Lever

FLI

Fuel Level Indicator

FPR-VSV

Fuel Pressure Regulator Vacuum Switching Valve

Ft. Lbs.

Foot Pounds

FWD

Front Wheel Drive

"G"

g

grams

Gals.

gallons

GND or GRND

Ground

"H"

HAC

High Altitude Compensation

HC

Hydrocarbons

H/D

Heavy Duty

HO2S

Heated Exhaust Gas Oxygen Sensor

Hg

Mercury

Hgt.

Height

HLDT

Headlight

HO

High Output

HO2S

Heated Oxygen Sensor

HP

High Performance

HSC

High Swirl Combustion

HSO

High Specific Output

HTR

Heater

Hz

Hertz (Cycles Per Second)

"I"

IAC

Idle Air Control

IACV

Idle Air Control Valve

IAT

Intake Air Temperature

IC

Integrated Circuit

ID

Identification

I.D.

Inside Diameter

IFS

Independant Front Suspension

IFS

Inertia Fuel Shutoff (Ford)

Ign.

Ignition

IMRC

Intake Manifold Runner Control

In.

Inches

INCH Lbs.

Inch Pounds

in. Hg

Inches of Mercury

Inj.

Injector

IP

Instrument Panel

IRS

Independant Rear Suspension

ISC

Idle Speed Control

IVD

Interactive Vehicle Dynamics (Ford)

IVSV

Idle Vacuum Switching Valve

"J"

J/B

Junction Block

"K"

KAPWR

Keep Alive Power

k/ohms

kilo-ohms (1000 ohms)

kg

Kilograms (weight)

kg/cm2

Kilograms Per Square Centimeter

KM/H

Kilometers Per Hour

KOEO

Key On, Engine Off

KOER

Key On, Engine Running

KS

Knock Sensor

kW

Kilowatt

kV

Kilovolt

"L"

L

Liter

lbs. (Lbs. when used in table)

Pounds

LCD

Liquid Crystal Display

L/D

Light Duty

LDP

Leak Detection Pump (Part of EVAP system.)

LED

Light Emitting Diode

LH

Left Hand

"M"

mA

Milliamps

MA or MAF

Mass Airflow

MAFS

Mass Airflow Sensor

MAP

Manifold Absolute Pressure

MAT

Manifold Air Temperature

Mem.

Memory

MEM-CAL

Memory Calibration Chip

mfd.

Microfarads

MFI

Multiport Fuel Injection

MICU

Multiplex Integrated Control Unit (Acura/Honda)

MIL

Malfunction Indicator Light

MPI

Multi-Point (Fuel) Injection

mm

Millimeters

MPH

Miles Per Hour

mV

Millivolts

"N"

NA

Not Available

NAC

NOx Adsorber Catalyst

NCA

No Color Available (Wiring Diagrams)

NGS

New Generation Star

N.m

Newton Meter

No.

Number

Nos.

Numbers

NOx

Oxides of Nitrogen

"O"

O2

Oxygen

OBD

On-Board Diagnostics

OC

Oxidation Catalyst

OD

Overdrive

O.D.

Outside Diameter

OHC

Overhead Camshaft

OSS

Output Speed Sensor

O/S

Oversize

oz.

Ounce

ozs.

Ounces

"P"

"P"

Park

P/C

Printed Circuit

PCM

Powertrain Control Module

PCS

Purge Control Solenoid

PC-SOL

Purge Control Solenoid

PCV

Positive Crankcase Ventilation

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

PRNDL

Park Reverse Neutral Drive Low

PROM

Programmable Read-Only Memory

psi

Pounds Per Square Inch

P/S

Power Steering

PSPS

Power Steering Pressure Switch

PTC

Positive Temperature Coefficient

PTO

Power Take-Off

Pts.

Pints

Pwr.

Power

"Q"

Qts.

Quarts

"R"

RABS

Rear Anti-Lock Brake System

RECIRC

Recirculation

RH

Right Hand

RPM

Revolutions Per Minute

RWAL

Rear Wheel Anti-Lock Brake

RWD

Rear Wheel Drive

"S"

SAS

Steering Angle Sensor

SBC

Single Bed Converter

SBEC

Single Board Engine Controller

SDARS

Satellite Digital Audio Radio Service

SES

Service Engine Soon

SFI

Sequential (Port) Fuel Injection

SIL

Shift Indicator Light

SIR

Supplemental Inflatable Restraint

SOHC

Single Overhead Cam

SOL or Sol.

Solenoid

SPFI

Sequential Port Fuel Injection

SPK

Spark Control

SPOUT

Spark Output

SRI

Service Reminder Indicator

SRS

Supplemental Restraint System (Air Bag)

STAR

Self-Test Automatic Readout

STO

Self-Test Output

SUB-O2

Sub Oxygen Sensor

Sw.

Switch

Sys.

System

"T"

TAB

Thermactor Air By-Pass

TAC

Throttle Actuator Module

TAD

Thermactor Air Diverter

TBC

Body Control Module (General Motors)

TBI

Throttle Body Injection

TCC

Torque Converter Clutch

TDC

Top Dead Center

Temp.

Temperature

TFI

Thick Film Ignition

THERMAC

Thermostatic Air Cleaner

TPM

Tire Pressure Monitor

TPMS

Tire Pressure Monitor System

TPS

Throttle Position Sensor/Switch

TS

Temperature Sensor

TV

Thermovalve

TWC

Three-Way Catalyst

"V"

V

Valve

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 (Analog)

VRV

Vacuum Regulator Valve

VSS

Vehicle Speed Sensor

VSV

Vacuum Switching Valve

"W"

W/

With

W/O

Without

WAC

Wide Open Throttle A/C Switch

WOT

Wide Open Throttle

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