A. Description of Terms and Acronyms

^ CHT - Cylinder Head Temperature Sensor or PID

^ CKP - Crankshaft Position Sensor or PID

^ DTC - Diagnostic Trouble Code

^ ECT - [1][2]Engine Coolant Temperature Sensor or PID

^ EGR - Exhaust Gas Recirculation

^ EEC - Electronic Engine Control

^ EVR - EGR Vacuum Regulator

^ FMEM - Failure Mode Effects Management

^ GND - Ground

^ HC - Hydrocarbons

^ HO2S - Heated Oxygen Sensor or PID

^ IAT - Inlet Air Temperature Sensor or PID

^ KAM - Keep Alive Memory

^ KOEO - Key On Engine Off

^ KOER - Key On Engine Running

^ LONGFT - Long Term Fuel Trim

^ MAF - Mass Air Flow Sensor or PID

^ MIL - Malfunction Indicator Lamp ("Check Engine")

^ NGS - New Generation Star Tester (Scan Tool)

^ OBD II - On-Board Diagnostics II

^ OSM - Output State Monitor

^ PC/ED - Powertrain Control/Emissions Diagnosis

^ PCM - Powertrain Control Module

^ PCV - Positive Crankcase Ventilation

^ PID - Parameter Identification Display

^ RAM - Random Access Memory

^ RPM - Revolutions Per Minute

^ SHRTFT - Short Term Fuel Trim

^ Stoichiometric - 14.7:1 Air/Fuel Ratio (Gasoline Engines)

^ TP - Throttle Position Sensor or PID

^ VMV - Vapor Management Valve

^ VPWR - Vehicle Power (Battery Voltage)

^ VREF - Vehicle Reference Voltage (5 volts)