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Powertrain Diagnostic Procedures: Acronyms

A/C  Air Conditioning

ABS  Anti-Lock Brake System

ASD Relay  Auto Shutdown Relay

APPS  Accelerator Pedal Position Sensor

Baro  Barometric Pressure

BCM  Body Control Module

BTS  Battery Temperature Sensor

CAA  Clean Air Act

CAB  Controller Antilock Brakes

CARB  California Air Resources Board

CCD Bus  Chrysler Collision Detection Bus

CKP Sensor  Crank Position Sensor

CMP Sensor  Camshaft Position Sensor

CO  Carbon Monoxide

DCP Solenoid  Duty-Cycle Purge Solenoid

DLC  Data Link Connector

DRBIII®  Diagnostic Readout Box - 3rd Generation

DTC  Diagnostic Trouble Code

DVOM  Digital Volt Ohm Meter

EATX II  Electronic Automatic Transmission Controller - 2nd Generation

EC  European Community

ECT Sensor  Engine Coolant Temperature Sensor

EEPROM  Electrically Erasable Programmable Read Only Memory

EGR Valve  Exhaust Gas Recirculation Valve

EMCC  Electronic Modulated Converter Clutch

EMI  Electro-Magnetic Interference

EOBD  European OBD (based upon Euro Stage III)

EPA  Environmental Protection Agency

EPP  Engine Position Pulse

EU  European Union

EVAP  Evaporative Emission System

EVR  Electronic Voltage Regulator

EWMA  Exponentially Weighted Moving Average

FTP  Federal Test Procedure

HC  Hydrocarbons

HO2S  Heated Oxygen Sensor

Generator  Previously called "alternator"

IAC Motor  Idle Air Control Motor

IAT Sensor  Intake Air Temperature Sensor

I/M  Inspection and Maintenance Testing

JTEC  Jeep/Truck Engine Controller

LDP  Leak Detection Pump

LSIACV  Linear Solenoid Idle Air Control Valve

MAF  Mass Air Flow

MAP Sensor  Manifold Absolute Pressure Sensor

MDS2®  Mopar Diagnostic System - 2nd Generation

MIL  Malfunction Indicator Lamp

MTV  Manifold Tuning Valve

NGC  Next Generation Controller

NTC  Negative Temperature Coefficient

NVLD  Natural Vacuum Leak Detection

2  Sensor  Oxygen Sensor

O2S  Oxygen Sensor

OBD I  On Board Diagnostics - 1st Generation

OBD II  On-Board Diagnostics - 2nd Generation

ORVR  On-Board Refueling Vapor Recovery

PCI Bus  Programmable Communications Interface BUS (J1850)

PCM  Powertrain Control Module

PCV  Positive Crankcase Ventilation

PDC  Power Distribution Center

PEP  Peripheral Expansion Port

P/N  Park/Neutral

PPS  Proportional Purge Solenoid

PS  Power Steering

PSP  Power Steering Pressure (Switch)

PTC  Positive Temperature Coefficient

PWM  Pulse-Width Modulation

RAM  Random Access Memory

RFI  Radio Frequency Interference

RKE  Remote Keyless Entry

RPM  Revolutions Per Minute

SAE  Society of Automotive Engineers

SBEC  Single Board Engine Controller

SCW  Similar Conditions Window

SKIM  Sentry Key Immobilizer Module

SRV  Short Runner Valve

TCC  Torque Converter Clutch

TCM  Transmission Control Module

TDC  Top Dead Center

TPS  Throttle Position Sensor

TRS  Transmission Range Sensor

VSS  Vehicle Speed Sensor

WOT  Wide Open Throttle