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Main Content
 

A - Amperes

A/C - Air Conditioning

A/CL BIMET - Air Cleaner Bi-Metal Sensor

A/CL DV - Air Cleaner Duct and Valve Vacuum Motor

A/D - Analogue to Digital Converter

A/F - Air Fuel Ratio

A/T - Automatic Transmission

A4R70W - Automatic Overdrive Electronic Wide Ration Transmission

AAC - Auxiliary Air Control Valve

AAV - Anti-Afterburn Valve (Mazda)

ABCV - Airbleed Control Valve (Ford)

ABS - Antilock Brake System

ABSV - Air Bypass Solenoid Valve (Mazda)

ABV - Air Bypass Valve

AC - Alternating Current

ACC - Air Conditioning Clutch

ACC - Automatic Climate Control

ACCS - A/C Cycling Clutch Switch

ACD - Air Conditioning Demand Switch

ACON - Air Conditioning On Signal

ACP - Air Conditioning Pressure Signal

ACPSW - Air Conditioning Pressure Switch

ACR - Air Conditioning Relay

ACR4 - Air Conditioning Refrigerant, Recovery, Recycling, Recharging

ACT - Air Charge Temperature

ACV - Air Control Valve

ADU - Analog-Digital Unit

AFC - Air Flow Control

AFM - Air Flow Meter

AFR - Air Fuel Ratio

AFS - Air Flow Sensor (Mitsubishi)

AIR - Secondary Air Injection System

AIRB - Air Bypass Solenoid

AIRD - AIR Diverter Solenoid

AIS - Air Injection System (Chrysler)

AIS - Automatic Idle Speed

AIV - Air Injection Valve

ALC - Automatic Level Control

ALCL - Assembly Line Communications Link (GM)

ALDL - Assembly Line Data Link

ALT - Alternator (replaced with GEN)

AM1 - Air Management 1, AIR Bypass

AM2 - Air Management 2, AIR Diverter

AMB - Ambient

AOD - Automatic Overdrive

AODE - Automatic Overdrive Electronic Transmission

AODE-W - Automatic Overdrive Electronic Wide (ratio transmission)

AP - Accelerator Pedal

APC - Automatic Performance Control

APS - Atmospheric Pressure Sensor (Mazda)

APS - Absolute Pressure Sensor (GM)

APT - Adjustable part Throttle

ARC - Automatic Ride Control

ARS - Automatic Restraint System

ASARC - Air Suspension Automatic Ride Control

ASD - Automatic Shutdown Relay

ASDM - Airbag System Diagnostic Module (Chrysler)

ASE - Automotive Service Excellence

ASM - Acceleration Simulation Mode

ASR - Acceleration Slip Regulation

ATC - Automatic Temperature Control

ATDC - After Top Dead Centre

ATF - Automatic Transmission Fluid

ATM - Actuator Test Mode

ATS - Air Temperature Sensor (Chrysler)

ATX - Automatic Transaxle

AVOM - Analog Volt / Ohm Meter

AWD - All-Wheel Drive

AWD - All Wheel Drive

AWG - American Wire Gage'

AX4S - Automatic 4-Speed Trans.

AXOD - Automatic Overdrive Transaxle

AXOD-E - Automatic Overdrive Transaxle - Electronically Controlled

B/MAP - Barometric/Manifold Absolute Pressure

B+ - Battery Positive Voltage

BAC - Bypass Air Control Valve

BARO - Barometric Pressure

BAT - Battery

BC - Blower Control

BCM - Body Control Module

BHP - Brake Horsepower

BHS - Bimetal Heat Sensor (Ford)

BID - Breaker less Inductive Discharge (AMC)

BLM - Block Learn Multiplier (replaced with LT FUEL TRIM)

BMAP - Barometric/Manifold Absolute Pressure Sensor (Ford)

BOB - Breakout Box

BOO - Brake On / Off Switch

BP - Barometric Pressure

BPA - Mechanical Bypass Air

BPCSV - Bypass Control Solenoid Valve

BPP - Brake Pedal Position Switch

BPS - Back Pressure Sensor

BPT - Back-Pressure Transducer

BPV - Bypass Valve (Ford)

BPW - Brake Pulse Width

BSV - Backfire Suppressor (Ford)

BTDC - Before Top Dead Center

BTS - Battery Temperature Sensor

BTSI - Brake Transmission Shift Interlock

Btu - British Thermal Unit

BUS N - Bus Negative

BUS P - Bus Positive

BV - Bowl Vent Port (Ford)

BVSV - Bi-Metal Vent Control Valve

BVT - Backpressure Variable Transducer System (Ford)

C - Carbon

C - Celsius

C.A.R.B. - California Air Resource Board

C3 - Computer Command Control System (GM)

C3I - Computer Controlled Coil Ignition

C4 - Computer Controlled Catalytic Converter System (GM)

CAC - Charge Air Cooler

CANP - EVAP Canister Purge Solenoid

CARB - Carburettor

CAS - Clean Air System

CAS - Crank Angle Sensor

CASE - Cranking Angle Sensing Error

CBD - Closed Bowl Distributor

CC - Catalytic Converter

CC - Cruise Control

CC - Cubic Centimetres

CC - Climate Control

CCC - Converter Clutch Control

CCC - Computer Command Control System (GM)

CCD - Computer Controlled Dwell

CCD - Chrysler Collision Detection

CCDIC - Climate Control Driver Information Centre

CCEI - Coolant Controlled Idle Enrichment (Chrysler)

CCEV - Coolant Controlled Engine Vacuum Switch (Chrysler)

CCM - Central Control Module

CCM - Continuous Component Monitor

CCNT, DTC CCNT - Count Code

CCO - Converter Clutch Override

CCOT - Cycling Clutch Orifice Tube

CCP - Climate Control Panel

CCP - Controlled Canister Purge (GM)

CCRM - Constant Control Relay Module

CCS - Coast Clutch Solenoid

CCSP - Carbon Canister Storage/Purge

CCV - Canister Control Valve

CDCV - Canister Drain Cut Valve

CDI - Capacitor Discharge Ignition (AMC)

CDR - Chrysler Diagnostic Readout

CDRV - Crankcase Depression Regulator Valve

CE - Commutate End

CEAB - Cold Engine Air Bleed

CEC - Crankcase Emission Control System (Honda)

CECU - Central Electronic Control Unit (Nissan)

CEL - Check Engine Light

CER - Cold Enrichment Rod (Ford)

CES - Clutch Engage Switch

CESS - Cold Engine Sensor Switch

CFC - Chlorofluorocarbons

CFI - Central Fuel Injection

CFI - Continuous Fuel Injection

CFM - Cubic Feet Per Minute

CFV - Critical Flow Venturi

CHM - Cold Mixture Heater

CID - Cylinder Identification Signal

CID - Cubic Inch Displacement

CIS - Continuous Injection System (Bosch)

CKP - Crankshaft Position Sensor

CKP REF - Crankshaft Position Reference

CKT - Circuit

CL - Closed Loop

CLC - Converter Lockup Clutch (replaced with TCC)

CLCC - Closed Loop Carburetor Control

CLNT - Coolant

CLV - Calculated Load Value

CMFI - Central Multi-port Fuel Injection

CMP - Camshaft Position Sensor

CMP REF - Camshaft Position Reference

CO - Carbon Monoxide

CO2 - Carbon Dioxide

COC - Conventional Oxidation Catalyst (Ford)

COP - Coil On Plug Electronic Ignition

CP - Canister Purge (GM)

CP - Crankshaft Position Sensor (Ford)

CPA - Connector Position Assurance

CPI - Central Port Fuel Injection

CPP - Clutch Pedal Position

CPS - Central Power Supply

CPSOV - Canister Purge Shut Off Valve (Ford)

CPU - Central Processing Unit

CRK - Cranking Signal

CRT - Cathode Ray Tube

CSC - Coolant Spark Control (Ford)

CSE GND - PCM Case Ground

CSSA - Cold Start Spark Advance System (Ford)

CSSH - Cold Start Spark Hold System (Ford)

CTAV - Cold Temperature Actuated Vacuum Switch (Ford)

CTM - Central Timer Module

CTO - Clean Tachometer Output

CTO - Coolant Temperature Override

CTOX - Continuous Trap Oxidizer

CTP - Closed Throttle Position

CTS - Charge Temperature Switch (Chrysler)

CTS - Coolant Temperature Sensor

CTVS - Closed Throttle Vacuum Switch

CV - Constant Velocity

CV - Control Valve

CVCC - Compound Vortex Controlled Combustion System (Honda)

CVR - Control Vacuum Regulator (Ford)

CVS - Constant Volume Sampler

CWM-Ford - Cold Weather Modulator (Ford)

DAB - Delayed Accessory Bus

dB - Decibels

DC - Duty Cycle

DC - Direct Current

DCISCA - DC Motor Idle Speed Actuator

DCL - Data Communication Link

DDL - Diagnostic Data Link

DE - Drive End

DEC - Digital Electronic Controller

DEFI - Digital Electronic Fuel Injection (Cadillac)

DEPS - Digital Engine Position Sensor

DERM - Diagnostic Energy Reserve Module

DFCO - Decel Fuel Cutoff Mode

DFI - Direct Fuel Injection

DFS - Decel Fuel Shutoff

DI - Direct Ignition

DI - Distributor Ignition (System)

DIC - Driver Information Center

DICM - Distributor Ignition Control Module

DIS - Direct Ignition (Waste Spark)

DLC - Data Link Connector (OBD)

DM - Drive Motor

DMCM - Drive Motor Control Module

DMCT - Drive Motor Coolant Temperature

DMPI Module - Drive Motor Power Inverter Module

DMS - Distributor Modulator System

DOHC - Dual Overhead Cam

DOL - Data Output Line to IPC

DPC - Dynamic Pressure Control

DPFE - Differential Pressure Feedback

DPI - Fuel Plug Inhibit

DRB II - Diagnostic Readout Box (Chrysler)

DRCV - Distributor Retard Control Valve

DRL - Daytime Running Lights

DSO - Digital Storage Oscilloscope

DSR - Ford Diagnostic Subroutine

DSS - Downshift Solenoid

DSSA - Dual Signal Spark Advance (Ford)

DSV - Deceleration Solenoid Valve

DTC - Diagnostic Trouble Code

DTC FRZ - Diagnostic Trouble Code Freeze Frame

DTM - Diagnostic Test Mode

DTVS - Dual Temperature Vacuum Switch

DV - Delay Valve

DVAC - Distributor Vacuum Advance Control Valve

DVDSV - Differential Vacuum Delay and Separator Valve

DVDV - Distributor Vacuum Delay Valve

DVOM - Digital Volt-Ohmmeter

DV-TW - Relay Valve Two Way

DVVV - Distributor Vacuum Vent Valve

E4OD - Electronic 4-Speed Overdrive

EAC - Electronic Air Control (replaced with AIR)

EACV - Electronic Air Control Valve

EAIR - Electronic Secondary Air Injection

EBCM - Electronic Brake Control Module

EBP - Exhaust Back :Pressure

EBTCM - Electronic Brake T/C Module

EC - Engine Control

ECA - Electronic Control Assembly (Ford)

ECC - Electronic Climate Control

ECCS - Electronic Concentrated Control System

ECI - Extended Compressor at Idle

ECIT - Electronic Control Ignition Timing

ECL - Engine Coolant Level

ECM - Engine/Electronic Control Module

ECS - Evaporation Control System (Chrysler)

ECS - Emission Control System

ECT - Engine Coolant Temperature

ECU - Electronic Control Unit

EDF - Electro-Drive Fan

EDIS - Electronic Direct Ignition System (replaced with EI)

EDM - Electronic Distributor Modulator (Ford)

EEC - Electronic Engine Control (Ford)

EEC-I - Control of Ignition Timing

EEC-II - Control of Ignition Timing and Fuel Delivery Through a Feed Carburetor System

EEC-III - Control of Ignition Timing and Fuel Delivery Through a Central Fuel Injection System

EEC-IV - Control of Ignition Timing and Fuel Delivery Through an Electronic Fuel Injection System

EECS - Evaporative Emission Control System

EEGR - Electronic EGR (Solenoid)

EEGR Monitor - Electronic EGR Test

EEPROM - Electronically Erasable Programmable Read Only Memory

EESS - Evaporative Emission Shed System (Ford)

EEVIR - Evaporator Equalized Values in Receiver

EFC - Electronic Fuel Control

EFC - Electronic Feedback Carburetor (Chrysler)

EFCA - Electronic Fuel Control Assembly (Ford)

EFE - Early Fuel Evaporation

EFI - Electronic Fuel Injection

EFT - Engine Fuel Temperature

EFV - Early Fuel Evaporation

EGC - Exhaust Gas Check Valve (Ford)

EGO - Exhaust Gas Oxygen Sensor (Ford)

EGOR - EGO Signal Return (Ford)

EGR - Exhaust Gas Recirculation

EGR Monitor - OBDII EGR Test

EGR TVV - Exhaust Gas Recirculation Thermal Vacuum Valve

EGRB - EGR Boost Sensor

EGRC - EGR Control Solenoid (Ford)

EGRC-BPT - EGR Control Back Pressure Transducer

EGRPS - EGR Valve Position Sensor (Mazda)

EGRT - Exhaust Gas Recirculation Temperature

EGRV - Exhaust Gas Recirculation Vent Solenoid

EGTS - Exhaust Gas Temperature Switch (replaced with EGRT)

EH - Electro-Hydraulic

EI - Integrated Electronic Ignition System

EICV - Electronic Idle Control Valve

ELB - Electronic Lean Burn (Chrysler)

ELC - Electronic Level Control

ELCD - Evaporative Loss Control Device

EM - Engine Modification

EMB - Electromagnetic Brakes

EMF - Electromotive Force (voltage)

EMI - Electromagnetic Interference

EMR - Electronic Module Retard

EN - Generator (Alternator)

EOBD - European On Board Diagnostics

EOP - Engine Oil Pressure

EOS - Exhaust Oxygen Sensor

EOT - Engine Oil Temperature

EP - Exhaust Pressure

EPA - Environmental Protection Agency

EPC - Electronic Pressure Control

EPOS - EGR Valve Position Sensor (Ford)

EPROM - Erasable Programmable Read Only Memory

EPT - EGR Pressure Transducer (replaced with PFE)

ESA - Electronic Spark Advance (Chrysler)

ESC - Electronic Spark Control System (Ford)

ESD - Electrostatic Discharge

ESS - Electronic Spark Selection (Cadillac)

EST - Electronic Spark Timing

ETC - Electronic Temperature Control

ETP - EGR Pressure Transducer

ETR - Electronically Tuned Receiver

EVAP - Evaporative Emissions System

EVAP CP - Evaporative Canister Purge

EVAP CV - Evaporative Emissions System Canister Vent

EVIC - Electronic Vehicle Information Center

EVO - Electronic Vehicle Orifice

EVP - EGR Valve Position Sensor

EVR - EGR Vacuum Regulator

EXH - Exhaust

F4WD - Full Time Four Wheel Drive

FAN - Cooling Fan (Low or High Speed)

FBC - Feedback Carburettor

FBCA - Feedback Carburettor Actuator (Ford)

FC - Fan Control

FCA - Fuel Control Assembly (Chrysler)

FCS - Fuel Control Solenoid (Ford)

FDBK - Feedback

FDC - Fuel Deceleration Valve (Ford)

FDV - Fuel Decal Valve (Ford)

FEEPROM - Flash Electronically Erasable Programmable Read Only Memory

FEPROM - Flash Erasable Programmable Read Only Memory

FF - Flexible Fuel

FI - Fuel Injector

FIC - Fast Idle Control

FICD - Fast Idle Control Device

FIPL - Fuel Injection Pump Lever

FLC - Fluid Lock-up Converter (Ford)

FLS - Fluid Level Sensor (GM)

FM - Fan Motor Program in PCM

FMEM - Failure Mode Effect Management

FMVSS - Federal Motor Vehicle Safety Standards

FOM - Fix Operating Mode (Limp Mode)

FP - Fuel Pump Relay (Ford)

FP - Fuel Pump

FPM - Fuel Pump Monitor (in PCM)

FPRC - Fuel Pump Regulator Control

FRC - Forced

FRP - Fuel Rail Pressure

FRT - Fuel Rail Temperature

FRZ - Freeze Frame

FT - Fuel Trim

FTL - Fuel Tank Level Sensor

FTO - Filtered Tachometer Output

FTP - Fuel Tank Pressure

FTT - Fuel Tank Temperature

FWD - Front Wheel Drive

g/sec - Grams per Second

GA - Gage

GCM - Governor Control Module

GCW - Gross Combination Weight

GDC - Fuel Data Centre

GDI - Gasoline Direct Injection

GEM - Generic Electronic Module

GEN - Generator (Alternator)

GND - Electrical Ground Connection

GOOSE - Brief Throttle Open/Close

GPM - Grams Per Mile

GPS - Governor Pressure Sensor

GST - Generic Scan Tool

GVW - Gross Vehicle Weight

H - Hydrogen

H/CMPR - High Compression

H2O - Water

HAC - High Altitude Compensator

HAIS - Heated Air Intake System (Chrysler)

HBV - Heater Blower Voltage

HC - Hydrocarbons

HCDS - High Clutch Drum Speed

HCV - Hydrocarbon (Ford)

HCV - Exhaust Heat Control Valve (Ford)

HD - Heavy Duty

HDC - Heavy Duty Cooling

HDR-CKP - High Data Rate CKP Sensor

HEGO - Heated Exhaust Gas Oxygen Sensor

HEI - High Energy Ignition (GM)

HFC - High (speed) Fan Control

HFP - High Fuel Pump (Relay) Control

Hg - Mercury

HIC - Hot-Idle Compensator (Ford)

HLOS - Hardware Limited Operation System

HO - High Output

HO2S - Heated Oxygen Sensor

HO2S-1-1 - Bank One Sensor One Signal

HO2S-1-2 - Bank One Sensor Two Signal

HO2S-1-3 - Bank One Sensor Three Signal

HO2S-2-1 - Bank Two Sensor One Signal

HO2S-2-2 - Bank Two Sensor Two Signal

hp - Horsepower

HPC - High Pressure Cut off

HPL - High Pressure Liquid

HPS - High Performance System

HPV - High Pressure Vapour

HSC - High Swirl Combustion

HT - High Tension

HUD - Heads Up Display

HVAC - Heater Ventilation and Air Conditioning

HVACM - Heater-Vent-Air Conditioning Module

HVS - High Voltage Switch

Hz - Hertz

I/M - Inspection and Maintenance

I/O - Input / Output

I/P - Instrument Panel

IA - Intake Air

IAC - Idle Air Control (motor or solenoid)

IACV - Idle Air Control Valve

IAS - Inlet Air Solenoid (Ford)

IAT - Intake Air Temperature

IBP - Integral Back Pressure

IC - Integrated Circuit

IC - Ignition Control

ICM - Ignition Control Module

ICP - Injection Control Pressure

ICS - Idle Control Solenoid (GM)

ID - Inside Diameter

IDI - Integrated Direct Ignition

IDL - Idle Position Switch

IDM - Ignition Diagnostic Monitor

IDM - Injector Driver Module

IFI - Indirect Fuel Injection

IFS - Inertia Fuel Switch

IGN - Ignition

IGN ADV - Ignition Advance

IGN GND - Ignition Ground

ILC - Idle Load Compensator

IMA - Idle Mixture Adjuster

IMRC - Intake Manifold Runner Control

IMS - Ignition Module Signal

IMS - Inferred Mileage Sensor (Ford)

IMT - Intake Manifold Timing

INJ 1 to INJ 10 - Fuel Injectors 1 to 10

INT - Integrator (replaced with ST FUEL TRIM)

IPC - Instrument Panel Cluster

IPR - Injector Pressure Regulator

IRCM - Integrated Relay Control Module

ISA - Idle Speed Actuator

ISC - Idle Speed Control

ISO - International Standard of Organization

ISS - Input Shaft Speed

ITA - Ignition Timing Adjustment

ITCS - Ignition Timing Control System (Honda)

ITS - Idle Tracking Switch

IVS - Idle Validation Switch

IVSC - Integrated Vehicle Speed Control

IVV - Idle Vacuum Valve (Ford)

JAS - Jet Air System (Mitsubishi)

JSV - Jet Mixture Solenoid Valve

KAM - Keep Alive Memory

KAPWR - Direct Battery Power

KD - Kick down

KDLH - Kick down Low Hold

Kg/cm2 - Kilograms/ Cubic Centimetres

kHz - Kilohertz

Km - Kilometres

KOEC - Key On, Engine Cranking

KOEO - Key On, Engine Off

KOER - Key On, Engine Running

KPA - Kilopascal

KS - Knock Sensor

KSM - Knock Sensor Module

L - Litres

L4 - Four Cylinder Inline Engine

LAMBSE - Short Term Fuel Trim

LCD - Liquid Crystal Display

LED - Light Emitting Diode

LFC - Low Fan Control

LFP - Low Speed Fuel Pump Control

LHD - Left Hand Drive

LOAD - Calculated Load Value

LOC - Light Off Catalyst

LONGFT - Long Term Fuel Trim

LOOP - Engine Operating Loop Status

LOS - Limited Operating Strategy

LPG - Liquid Petroleum Gas

LSS - Linear Shift Solenoid

LTFT - Long Term Fuel Trim

LTS - Low Coolant Switch

LUS - Lock-Up Solenoid

LV8 - Load Variable

LWB - Long Wheel Base

M/C - Mixture Control

M/T - Manual Transmission

MAF - Mass Air Flow Sensor

MAF RTN - Mass Airflow Sensor Ground

MAP - Manifold Absolute Pressure Sensor

MAS - Mixture Adjust Screw

MAT - Manifold Air Temperature

MC - Mixture Control

MCS - Mixture Control Solenoid (GM)

MCT - Manifold Charge Temperature Sensor (Ford)

MCU - Microprocessor Control Unit (Ford)

MCV - Manifold Control Valve (Ford)

MDP - Manifold Differential Pressure

MECS - Mazda Electronic Control System

MEMCAL - Memory Calibration

MFI - Multiport Fuel Injection

MIC - Mechanical Instrument Cluster

MIL - Malfunction Indicator Lamp

MISAR - Micro processed Sensing and Automatic Regulation


MLP - Manual Lever Position

MLUS - Modulated Lock Up Solenoid or its Control Circuit (Ford)

MLVLPS - Manual Valve Lever Position

MPFI - Multi-Port Fuel Injection

MPG - Miles Per Gallon

MPH - Miles Per Hour

MPI - Multi Port Injection

mS or ms - Millisecond

MSFF - Miles Since First Fail

MSLF - Miles Since Last Fail

MST - Manifold Surface Temperature

MT - Manual Transmission

MTV - Manifold Tune Valve

mV or mv - Milivolt

MVLPS - Manual Valve Lever Position

MVZ - Manifold Vacuum Zone

N - Nitrogen

N.C. - Normally Closed Position

N.O. - Normally Open Position

N/MIL - A Code Set Without a MIL Request

N/V - Input Shaft Speed to Vehicle Speed

NDIR - Non Dispersive Infrared

NDS - Neutral Drive Switch

NGS - Neutral Gear Switch (Ford)

NGV - Natural Gas Vehicles

Nm - Newton Meters

NOx - Oxides of Nitrogen

NTC - Negative Temperature Coefficient

NVRAM - Non Volatile Random Access Memory

O2 - Oxygen

O2S-11 - Oxygen Sensor Signal (Bank 1)

O2S-21 - Oxygen Sensor Signal (Bank 2)

OASIS - Ford Motor Company Online Automotive Service Information System

OBD I - On Board Diagnostics Version I

OBD II - On Board Diagnostics Version II

OBD STAT - On Board Diagnostic System Status

OC - Oxidation Catalytic Converter

OCC - Output Circuit Check (Ford)

OCIL - Overdrive Cancel Indicator Lamp

OCS - Overdrive Cancel Switch

OCT ADJ - Octane Adjust Fuel Switch

OD - Overdrive

OD - Outside Diameter

ODM - Output Device Monitor

ODS - Overdrive Drum Speed

OE - Original Equipment

OEM - Original Equipment Manufacturer

OHC - Overhead Cam Engine

OHV - Over Head Valve

OL - Open Loop

ORC - Oxidation Reduction Converter

OS - Oxygen Sensor

OSAC - Orifice Spark Advance Control (Chrysler)

OSC - Output State Check (Ford)

OSM - Output State Monitor

OSS - Output Speed Shaft

OTIS - Overhead Travel Information System

OVCV - Outer Vent Control Valve

P/B - Power Brakes

P/E - Power Enrichment

P/N - Part Number

P/S - Power Steering

PA - Pressure Air (Honda)

PAFS - Pulse Air Feeder System (Chrysler)

PAIR - Pulsed Secondary Air Injection

PAS - passive Anti-Theft System

PAS - Power Assisted Steering

PASS - Personalized Automotive Security System

PC - Pressure Control

PCB - Printed Circuit Board

PCI - Programmable Communications Interface

PCM - Power train Control Module

PCS - Pressure Control Solenoid

PCV - Positive Crankcase Ventilation

PECV - Power Enrichment Control Valve

PF - Purge Flow Sensor

PFE - Pressure Feedback EGR Sensor

PFI - Port Fuel Injection

PFI - Port Fuel Injection (GM)

PGM-FI - Programmed Gas Management Fuel Injection (Honda)

PID - Parameter Identification Location

PID SUP - Parameter Identification Supported

PIP - Profile Ignition Pickup Signal

PIV - Peak Inverse Voltage

PKE - Passive Keyless Entry

PMD - Pump Mounted Driver

PNP - Par Neutral Position

POT - Potentiometer

PPM - Parts Per Minute

PPS - Ported Pressure Switch (Ford)

PR - Pressure Relief

PRC - Pressure Regulator Control

PRNDL - Switch

PROM - Programmable Read-Only Memory

PS - Power Steering

PSA - Pressure Switch Assembly

PSC - Power Steering Control

PSI - Pounds Per Square Inch

PSOM - Programmable Speedometer Odometer Module

PSOV - Purge Shut Off Valve (Ford)

PSP - Power Steering Pressure

PSPS - Power Steering Pressure Switch

PTC - Positive Temperature Coefficient Resistor

PTO - Power Take Off (4WD Option)

PTOX - Periodic Trap Oxidizer

PTU - Part Throttle Unlock

PVA - Ported Vacuum Advance

PVS - Ported Vacuum Switch

PWM - Pulse Width Modulation

PWR GND - Power Ground for PCM

QDM - Quad Driver Module

RABS - Rear Antilock Brake System

RAM - Random Access Memory

RAP - Retained Access Power

RECAL - Calibration Adjustment

REDOX - Reduction Oxidation Converter

REF - Reference

RFI - Radio Frequency Interference

RHD - Right Hand Drive

RKE - Remote Keyless Entry

RM - Relay Module

ROM - Read Only Memory

RON - Rated Octane Number

RPM - Revolutions Per Minute

RRS - Variable Reluctance Sensor

RTD - Real Time Dampening

RTN - Dedicated Sensor Ground Circuit

RTV - Room Temperature Vulcanizing

RVP - Reid Vapour Pressure

RWAL - Rear Wheel Anti-Lock

RWD - Rear Wheel Drive

S4WD - Selectable Four Wheel Drive

SAE - Viscosity Grade

SA-FV - Separator Assembly Fuel/Vacuum

SAVM - Spark Advance Vacuum Modulator

SAW - Spark Angle Work

SBDS - Service Bay Diagnostic System

SBEC - Single Board Engine Controller (replaced with PCM0

SBS - Boost Solenoid (Ford)

SBT - Serial Bus Traveler

SC - Supercharged Engine

SCAP - Silicone Capacitance Absolute Pressure Sensor (Ford)

SCB - Supercharger Bypass

SCC - Spark Control Computer (Chrysler)

SCP - Standard Corporate Protocol

SDI - Saab Direct Ignition

SDM - Sensing Diagnostic Module

SDV - Spark Delay Valve

SDV - Spark Deceleration Valve

SEFI - Sequential Electronic Fuel Injection

SEO - Special Equipment Option

SES - Service Engine Soon (replaced with MIL)

SFI - Sequential Fuel Injection

SHED - Sealed Housing Evaporative Determination System

SHO - Super High Output Engine

SHRT FT - Short Term Fuel Trim

SHRTFT1 - Short Term Fuel Trim Bank 1

SIG RTN - Signal Return (sensor ground)

SIL - Shift Indicator Lamp

SIPS - Side Impact Protections System

SIR - Supplemental Inflatable Restraint

SIS - Solenoid Idle Stop

SMEC - Single Module Engine Controller (replaced with PCM)

SMPI - Sequential Multiport Fuel Injection (Chrysler)

SO2 - Sulphur Dioxide

SOHC - Single Overhead Cam

SPD - Speed

SPFI - Single Point Fuel Injection (throttle body)

SPI - Serial Peripheral Interface

SPL - Smoke Puff Limiter

SPOUT - Spark Output Signal

SPS - Service Programming System

SRC - Selective Ride Control

SRDV - Spark Retard Delay Valve

SRI - Service Reminder Indicator

SRS - Spark Retard Solenoid

SRS - Supplemental Restraint System (air bag)

SRT - System Readiness Test

SS - Speed Sensor (Honda)

SS1, SS2,etc. - Shift Solenoid 1, 2, etc.

SSI - Solid State Ignition (Ford)

ST - Scan Tool

STAR - Self Test Automatic Readout

STI - Self Test Input

STI - Self-Test Input (Ford)

STO - Self Test Output

STO - Self-Test Output (Ford)

STS - Service Throttle System (lamp)

SUSP - Suspension System Module

SVV - Solenoid Vent Valve (Ford)

SWB - Short Wheel Base

TA - Temperature Air (Honda)

TAB - Thermostat Air Bypass

TAC - Throttle Actuator Control

TAC - Thermostatic Air Cleaner (GM)

TACH - Tachometer

TAD - Thermostat Air Diverter

TAP - Transmission Adaptive Pressure

TAV - Temperature Actuated Vacuum

TBI - Throttle Body Injection

TC - Turbocharger

TCA - Thermostat Controlled Air Cleaner

TCC - Torque Converter Clutch

TCCP - Torque Converter Clutch Pressure

TCCS - Toyota Computer Controlled System

TCIL - Transmission Control Indicator Lamp

TCM - Transmission Control Module

TCP - Torque Charger

TCP - Temperature Compensated Accelerator Pump (Ford)

TCS - Traction Control Switch

TCS - Transmission Control Switch

TCS - Transmission Controlled Spark (GM)

TD - Turbo Diesel

TDC - Top Dead Center

TDI - Turbo Direct Injection

TE - Thermal Expansion

TFP - Transmission Fluid Pressure

TFP - Throttle Fluid Pressure

TFT - Transmission Fluid Temperature

THM - Turbo Hydra-Matic

TI - Transistorized Ignition System

TIC - Thermal Ignition Control (Chrysler)

TIV - Thermactor Idle Vacuum Valve (Ford)

TK - Throttle Kicker Actuator (Ford)

TKS - Throttle Kicker Solenoid

TOT - Transmission Oil Temperature

TP - Throttle Position

TP Mode - Throttle Position Mode

TPCV - Tank Pressure Control Valve

TPI - Tuned Port Injection

TPM - Tire Pressure Monitor

TPP - Throttle Position Potentiometer

TPS - Throttle Position Sensor

TPT - Throttle Position Transducer (Chrysler)

TR - Transmission Range Sensor

TRLHP - Thermal Vacuum Valve

TRS, TRS+1 - Transmission Regulated Spark Control System

TSB - Technical Service Bulletin

TSP - Throttle Solenoid Positioner (Ford)

TSS - Transmission Shaft Speed Sensor

TSS - Turbine Speed Shaft Sensor

TV - Throttle Valve

TVS - Temperature Vacuum Switch

TVV - Thermal Vent Valve (Ford)

TWC - Three Way Catalyst

TWC + OC - Three Way Catalyst

UART - Universal Asynchronous Receiver-Transmitter

UD - Under drive

UIDI - Up-Integrated Direct Ignition

V - Volts

VAC - Vacuum

VAF - Vane Airflow Meter

VAF - Volume Air Flow

VAT - Vane Air Temperature Sensor

VATS - Vehicle AntiTheft System

VBAT - Vehicle (system) Battery Voltage

VCC - Vacuum Cut Control Solenoid

VCM - Vehicle Control Module

VCRM - Variable Control Relay Module

VCTS - Vacuum Control Temperature Sensing Valve (Ford)

VCV - Vacuum Control Valve (Ford)

VDOT - Variable Displacement Orifice Tube

VDV - Vacuum Delay Valve

VDV - Vacuum Differential Valve (Ford)

VECI - Vehicle Emission Control Information Decal

VF - Vacuum Fluorescent

VIM - Vehicle Interface Module

VIN - Vehicle Identification Number

VIS - Variable Induction System

VLCM - Variable Load Control Module

VMV - Vapor Management Valve (EVAP)

VMV - Vacuum Modulator Valve

VNT - Variable Nozzle Turbocharger

VOTM - Vacuum Operated Throttle Modulator (Ford)

VPWM - Variable Pulse Width Modulated

VPWR - Ignition Switched Power

VR - Voltage Regulator

VR/S - Vacuum Regulator/Solenoid (Ford)

VRDV - Vacuum Retard Delay Valve (Ford)

VREF - Reference Voltage (from PCM)

VRESER - Vacuum Reservoir (Ford)

VREST - Vacuum Restrictor (Ford)

VRIS - Variable Resonance Induction System

VRS - Variable Reluctance Sensor

VRV - Vacuum Regulator Valve (Ford)

VSS - Vehicle Speed Sensor

VVA - Venturi Vacuum Amplifier (Ford)

VVC - Variable Voltage Choke (Ford)

VVV - Vacuum Vent Valve (Ford)

W/B - Wheelbase

WAC - WOT A/C Cut out Relay

WACA - A/C WOT Cut out Relay Monitor

WOT - Wide Open Throttle

WOTV - Wide-Open Throttle Valve (Ford)

WSS - Wheel Speed Sensor

WU OC - Warm Up Oxidation Catalytic Converter

WU TWC - Warm Up Three Way Catalytic Converter

AAC: Auxiliary Air Control

AAV: Anti After burn Valve

ABS: Anti-lock Brake System

A/C: Air Conditioning

ACC: Accessory Position

ACL: Air Cleaner (Thermostatic Type)

ACM: Air Bag Control Module

ACR-4: Air Conditioning Refrigerant, Recovery, Recycling, Recharging

ACT: Air Charge Temperature

A/D: Analogue to Digital

AECM: Air Bag Electronic Control Module

A/F: Air/Fuel Ratio

AIR: Secondary Air Injection

AIRB: Secondary Air Injection Bypass

AIRD: Secondary Air Injection Diverter

AIS: Secondary Air Injection

ALDL: Assembly Line Diagnostic Link

AM1: Thermactor Air Management 1 (TAB)

AM2: Thermactor Air Management 2 (TAB or TAD)

AP: Accelerator Pedal

API: American Petroleum Institute

APP: Accelerator Pedal Position

APS: Accelerator Position Sensor

ARS: Automatic Restraint System

ASD: Automatic Shutdown

ASDM: Air Bag System Diagnostic Module

ASR: Automatic Slip Regulation

A/T: Automatic Transaxle or Transmission

ATC: Active Transfer Case

ATDC: After Top Dead Centre

BAP: Barometric Atmosphere Pressure

BAR: Bureau of Auto Repair

BARO: Barometric Pressure

BBL: Barrel

BCM: Body Control Module

BID: Breaker less Inductive Discharge

BOB: Breakout Box

BOO: Brake On/Off

BP: Barometric Pressure

BPA: Bypass Air

BPT: Backpressure Transducer

BTDC: Before Top Dead Centre

BVT: Backpressure Variable Transducer

B+: Battery Positive Voltage

C: Continuous Memory

CA: California

CAB: Controller Anti-lock Brake

CAC: Charge Air Cooler

CANP: Canister Purge

CARB: California Air Resources Board

CARB: Carburettor

CAT: Catalytic Converter

CBD: Closed Bowl Distributor

CCA: Centre Control Assembly

CCC: Converter Clutch Control Solenoid

CCCI:Computer Controlled Coil Ignition

CCD:Chrysler Collision Detection

CCD: Computer Controlled Dwell

CCECS: Computer Controlled Emission Control System

CCO: Converter Clutch Overdrive Solenoid

CCOT: Cycling Clutch Orifice Tube

CCP: Carbon Canister Purge

CCRM: Constant Control Relay Module

CEC: Computerized Emission Control System

CES: Clutch Engage Switch

CFRM: Condenser Fan Relay Module

CID: Cylinder Identification

CID:Cubic Inch Displacement

CIS: Constant Injection System

CIS-E: Constant Injection System Electronic

CKP: Crankshaft Position Sensor

CLECS: Closed Loop Emission Control System

CLFCS: Closed Loop Fuel Control System

CMFI: Central Multi-Port Fuel Injection

CMP: Camshaft Position Sensor

CMTC: Compass/Mini-Trip Computer

CNG: Compressed Natural Gas

CO: Carbon Monoxide

COP: Coil On Plug

CO2: Carbon Dioxide

CP: Canister Purge

CP: Crankshaft Position

CPP: Clutch Pedal Position

CPU:Central Processing Unit

CSF: Crankshaft Speed Fluctuation

CSFI: Central Sequential Fuel Injection

CTM: Central Timer Module

CTOX: Continuous Trap Oxidizer

CTP: Closed Throttle Position

CVVT: Continuous Variable Valve Timing

CYP: Cylinder Position

C3: Computer Command Control

C-4:Computer Controlled Catalytic Converter

DAB: Driver Air Bag

DCL: Data Communications Link

DDS: Driveline Disengagement Switch

DEC: Diesel Engine Control

DERM: Diagnostic Energy Reserve Module

DFI: Digital Fuel Injection

DI: Distributor Ignition

DIC:Driver Information Center

DIS: Distributorless Ignition System

DIS: Direct Ignition System

DLC: Data Link Connector

DME: Digital Motor Electronics

DMIVA: Distributor Mounted Ignition Vacuum Advance

DOHC: Dual Overhead Camshaft

DPFE: Differential Pressure Feedback EGR

DPI: Dual Plug Ignition

DRB: Diagnostic Readout Box

DRB II:Diagnostic Readout Box II

DRB III: Diagnostic Readout Box III

DRL: Daytime Running Lamps

DS-I: Dura Spark I Ignition System

DS-II: Dura Spark II Ignition System

DSAS: Deceleration Spark Advance System

DSS: Downshift Solenoid

DTC: Diagnostic Trouble Code

DTM: Diagnostic Test Mode

DVOM:Digital Volt Ohm Meter

EAIR: Electronic Secondary Air Injection

EAT: Electronically Controlled Automatic Transaxle Or Transmission

EBCM: Electronic Brake Control Module

EBL: Electric Back Lite (Rear Window Defroster)

EBP: Exhaust Back Pressure

ECA:Electronic Control Assembly

ECCS: Electronic Concentrated Engine Control System

ECITS:Electronic Control Ignition Timing System

ECL: Engine coolant Level

ECM: Engine Control Module

ECT: Engine Coolant Temperature

ECTF: Cooling Fan Engine Coolant Temperature

ECU: Engine Control Unit

EDF: Electro Drive Fan

EDFI: Electronic Diesel Fuel Injection

EDI: Electronic Controlled Direct Ignition System

EDIS: Electronic Distributorless Ignition System

EDL: Engine Data Line

EEC-I: Electronic Engine Control I

EEC-II: Electronic Engine Control II

EEC-III: Electronic Engine Control III

EEC-IV: Electronic Engine Control IV

EEC-V: Electronic Engine Control V

EEPROM: Electronically Erasable Programmable Read Only Memory

EET: Electronic EGR Transducer

EFC: Electronic Feedback Carburetor

EFE: Early Fuel Evaporation

EFI:Electronic Fuel Injection

EGO: Exhaust Gas Oxygen Sensor

EGR: Exhaust Gas Recirculation

EEGR: Electronic EGR Valve

EGRC: EGR Control

EGRT:EGR Temperature

EGRV: EGR Vent

EI: Electronic Ignition

EIC: Electronic Instrument Cluster

EICU: Electronic Ignition Control Unit

EITC: Electronic Ignition Timing Control

ELB: Electronic Lean Burn System

ELC: Electronic Level Control

ELCD: Evaporative Loss Control Device

ELD: Electric Load Detector

EMR: Electronic Module Retard

EOP: Engine Oil Pressure

EOT:Engine Oil Temperature

EPA: Environmental Protection Agency

EPC: Electronic Pressure Control

EPR: Exhaust Back Pressure Regulator

EPROM: Erasable Programmable Read Only Memory

EPT: EGR Pressure Transducer

ESA: Electronic Spark Advance

ESC: Electronic Spark Control

ESS: Engine Speed Sensor

EST:Electronic Spark Timing

ETC: Electronic Temperature Control

ETC: Electronic Throttle Control

ETCS-i: Electronic Throttle Control System-intelligent

ETW: Equivalent Test Weight

EVAP: Evaporative Emission Control System

EVIC: Electronic Vehicle Information Center

EVO: Electronic Variable Orifice

EVP: EGR Valve Position

EVR: EGR Vacuum Regulator

EVSV: Electronic Vacuum Switching Valve

EWL: Engine Warning Lamp

EZL:Electronic Ignition System With Variable Characteristics

FBC: Feedback Carburetor

FDCS: Fuel Demand Command Signal

FED: Federal

FEEPROM: Flash Electrically Erasable Programmable Read Only Memory

FEPROM: Flash Electrically Programmable Read Only Memory

FF: Flexible Fuel

FI:Fuel Injection

FMEM: Failure Mode Effects Management

FMI: Failure Mode Identifiers

FPM: Fuel Pump Monitor

FPCM: Fuel Injection Pump Control Module

FPRC: Fuel Pressure Regulator Control

FR: Fillpipe Restrictor

FSS: Flexible Service System

GFD:Generic Field Data

GFP: Gaseous Fuel Prep

GPC: Glow Plug Control

GPL: Glow Plug Wait Lamp

GPM: Gallons Per Minute

gpm: Grams Per Million

GPR: Glow Plug Relay

GVW: Gross Vehicle Weight

GVWR: Gross Vehicle Weight Rating

HC: Hydrocarbons

HCU: Hydraulic Control Unit

HD: Heavy Duty

HDC: Heavy Duty Emission Cycle

HE: Hall Effect

HEDF: High Electro Drive Fan

HEGO: Heated Exhaust Gas Oxygen Sensor

HEI: High Energy Ignition System

HEUI: Hydraulically Actuated Electronically Controlled Unit Injectors

HFAN: High Speed Cooling Fan

HFC: High Fan Control

HFM: Hot Film Air Mass Sensor

HO: High Output

HO2S: Heated Oxygen Sensor

HSC:High Swirl Combustion

HSIA: High Speed Inlet Air Control

HVAC: Heater Vent Air Conditioning

HVS: High Voltage Switch Ignition System

IAC: Idle Air Control

IACV-AAC: Idle Air Control Valve-Auxiliary Air Control Valve

IAT: Intake Air Temperature

IC: Ignition Control

ICM: Ignition Control Module

ICP: Injector Control Pressure

ICS:Ignition Control System

ICTO: Ignition Coolant Temperature Override

IDI: Indirect Diesel Injection

IDI: Indirect Fuel Injection

IDM: Ignition Diagnostic Monitor

IDM: Injector Driver Module

ILEV: Inherently Low Emissions Vehicle

IMRC: Intake Manifold Runner Control

IMT: Intake Manifold Temperature

IOD: Ignition Current Off Draw

IPR:Injection Control Pressure Regulator

ISC:Idle Speed Control

ITS: Idle Tracking Switch

IVS: Idle Validation Switch

JTEC: Jeep Truck Powertrain Control Module System

KAM: Keep Alive Memory

KOEO: Key On Engine Off

KOER: Key On Engine Running

KS:Knock Sensor

LCD: Liquid Crystal Display

LDP: Leak Detection Pump

LED: Light Emitting Diode

LEV: Low Emissions Vehicle

LFAN:Low Speed Cooling Fan

LH: Lefthand

LPG: Liquid Propane Gas

LPT: Light Pressure Turbo

LUS:Lock-Up Solenoid

LVW: Loaded Vehicle Weight

M/CCC: Modulated Converter Clutch Control

MAF: Mass Air Flow

MAP: Manifold Absolute Pressure

MAT: Manifold Air Temperature

MC-VAF: Measuring Core Volume Air Flow

MCC: Manifold Catalytic Converter

MCCA:Message Center Control Assembly

MCS:Mixture Control System

MCU: Microprocessor Control Unit

MDP: Manifold Differential Pressure

MEMCAL: Memory Calibration Unit

MFI: Multi-Port Fuel Injection

MIC: Mechanical Instrument Cluster

MID: Message Identifier

MIL: Malfunction Indicator Lamp

MPI: Multi-Port Injection

MLP: Manual Lever Position

MLUS: Modulator Lock-Up Solenoid

MST: Manifold Surface Temperature

M/T: Manual Transaxle Or Transmission

MTA: Managed Thermactor Air

MUI: Mechanical Unit Injection

MUT II: Multi-Use Tool, Second Edition

NGS: New Generation Star Tester

NGV: Natural Gas Vehicle

NOx: Oxides Of Nitrogen

NVRAM: Non Volatile Random Access Memory

O: Key On Engine Off

OBD: On-Board Diagnosis

OBD II: On-Board Diagnosis II

OC:Oxidation Catalytic Converter

OCC: Output Circuit Check

ODO: Odometer

ODM: Output Driver Module

OHC: Overhead Cam

ORVR: On Board Refueling Vapor Recovery

OSAC: Orifice Spark Advance Control

OSC: Output State Control

OSS: Output Shaft

OSS: Output Speed Sensor

OTIS: Overhead Travel Information System

OWL: Oil/Water Warning Lamp

O2S:Oxygen Sensor

PAB: Passenger Air Bag

PAD: Passenger Air Bag Disable

PAG: Polyalkaline Glycol

PAIR: Pulsed Secondary Air Injection

PCI: Programmable Communication Interface

PCM: Powertrain Control Module

PCV: Positive Crankcase Ventilation

PDC: Power Distribution Center

PFE:Pressure Feedback EGR

PG: Pulse Generator

PGM-CARB: Programmed Carburetor

PGM-FI: Programmed Fuel Injection Control System

PGM-IG: Programmed Ignition

PID: Parameter Identifier

PIP: Profile Ignition Pickup

PNP:Park/Neutral Position

ppm: Parts Per Million

PRC: Pressure Regulator Control

PROM: Programmable Read Only Memory

PSI: Pounds Per Square Inch

PSP: Power Steering Pressure

PSPS: Power Steering Pressure Switch

PTEC: Powertrain Electronic Controller Management System

PTO: Power Take Off

PWM: Pulse Width Modulated

R: Key On Engine Running

RABS: Rear Anti-lock Braking System

RAM: Random Access Memory

RAP: Retained Accessory Power

RDS: Radio Data System

REDOX: Reduction Oxidation Catalytic Converter

REGT: Recirculated Exhaust Gas Temperature

RFI: Radio Frequency Interference

RH: Righthand

RKE: Remote Keyless Entry

ROM: Read Only Memory

RON: Research Octane Number

RPM: Revolutions Per Minute

RPS:Revolutions Per Second

SAW: Spark Angle Word

SBEC: Single Board Engine Control

SC: Supercharger

SCC: Spark Control Computer

SCCS:Speed Control Command Switches

SCS: Speed Controlled Spark

SFI: Sequential Multi-Port Fuel Injection

SFTP: Supplementary Federal Test Procedure

SHO: Super High Output

SID: Subsystem Identifier

SIL: Shift Indicator Lamp

SKIM: Smart Key Immobilizer Module

SMEC: Single Module Engine Control

SOHC:Single Overhead Camshaft

SO2: Sulfur Dioxide

SPCS: Spark Plug Switching Control System

SPI: Serial Peripheral Interface

SPK: Spark Control

SPOUT: Spark Output

SRI: Service Reminder Indicator

SRS:Supplemental Restraint System

SS: Shift Solenoid

SSI: Solid State Ignition

SST: Special Service Tool

STAR: Self-Test Automatic Readout

STC: Spark Timing Control

STI:Self-Test Input

STO: Self-Test Output

SULEV: Super Ultra Low Emissions Vehicle

SVO: Special Vehicle Operations

SVT: Special Vehicle Team

TAB: Thermactor Air Bypass Vacuum Solenoid Valve

TAC: Tachometer Output Signal

TAD: Thermactor Air Diverter Vacuum Solenoid Valve

TBI: Throttle Body Fuel Injection

TC: Turbocharger

TCC:Torque Converter Clutch

TCS: Transmission Controlled Spark

TDC: Top Dead Centre

TFI-I: Thick Film I Ignition System

TFI-IV: Thick Film IV Ignition System

TFT: Transmission Fluid Temperature

TI Transistor Ignition System

TLEV: Transitional Low Emission Vehicle

TOT: Transmission Oil Temperature

TP: Throttle Position

TP: Throttle Positioned

TPI: Tuned Port Injection

TPOUT: Throttle Position Output

TPS: Throttle Position Sensor

TRS: Transmission regulated Spark

TSB: Technical Service Bulletin

TSS: Transmission Speed Sensor

TSS: Turbine Speed Sensor

TTS: Transaxle Temperature Switch

TV: Throttle Valve

TVP: Throttle Valve Potentiometer

TVV: Thermal Vacuum Valve

TWC: Three-Way Catalytic Converter

TWC+OC: Three-Way + Oxidation Catalytic Converter

UIC: Universal Integrated Circuit Ignition

ULEV: Ultra Low Emissions Vehicle

UVC: Under Valve Cover

VAF: Vane Air Flow

VAF:Volume Air Flow

VANOS: Double Variable Camshaft Control

VAT: Vane Air Temperature

VCM: Vehicle Control Module

VCRM: Variable Control Relay Module

VDV: Vacuum Delay Valve

VEPS:Vehicle Electronic Programming System

VFD:Vacuum Fluorescent Display

VIC: Vehicle Information Center

VICS: Variable Inertia Charging System

VIN: Vehicle Identification Number

VIT: Vehicle Interface Tool

VPM: Vehicle Personality Module

VP-20: Bosch VP-20 Diesel Engine Control System

VRE: Vehicle Retarded Enable

VREF: Reference Voltage

VRV: Vacuum Regulator Valve

VSS:Vehicle Speed Sensor

VTEC: Variable Valve Timing & Valve Lift Electronic Control

VTSS: Vehicle Theft Security System

VVTi: Variable Valve Timing With Intelligence

WAC: Wide Open Throttle A/C Cut off

WOT: Wide Open Throttle

WOTPS: Wide Open Throttle Position Switch

WSS: Wheel Speed Sensor

WU-OC: Warm-Up Oxidation Catalytic Converter

WU-TWC: Warm-Up Three-Way Catalytic Converter

X: Equipped

ZEV: Zero Emissions Vehicle

1 BBL: 1 Barrel Carburettor

2 BBL: 2 Barrel Carburettor

3 BBL:3 Barrel Carburettor

4 BBL: 4 Barrel Carburettor

2 VH: 2 Valve Head

4 VH: 4 Valve Head


A/C = Air Conditioning
A/F = Air/Fuel Ratio
A/T = Automatic Transmission or Transaxle
ABS = Antilock Braking System
ABSV = Air Bypass Solenoid Valve
AC = Alternating Current
ACTS = Air Charge Temperature Sensor
AFC = Air Flow Control
AFM = Air Flow Meter
AFS = Air Flow Sensor
ALCL = Assembly Line Communications Link
ALDL = Assembly Line Data Link
APS = Absolute Pressure Sensor
APS = Atmospheric Pressure Sensor
ASDM = Airbag System Diagnostic Module
ATDC = After Top Dead Centre
ATF = Automatic Transmission Fluid
ATS = Air Temperature Sensor
AWD = All Wheel Drive

-

B+ = Battery Positive Voltage
BARO = Barometric Pressure
BAT = Battery
BCM = Body Control Module
BHP = Brake Horse Power
BMAP = Barometric/Manifold Absolute Pressure Sensor
BPS = Back pressure Sensor
BPT = Back Pressure Transducer
BTDC = Before Top Dead Center
Btu = British Thermal Units

C = Celsius
C3I = Computer Controlled Coil Ignition
CALPAK = Calibration Pack
CAN = Controller Area Network
CANP = Canister Purge Solenoid Valve
CAS = Crank Angle Sensor
CC = Cubic Centimetres
CDI = Capacitor Discharge Ignition
CEAB = Cold Engine Air Bleed
CECU = Central Electronic Control Unit
CER = Cold Enrichment Rod
CESS = Cold Engine Sensor Switch
CFI = Central Fuel Injection
CFI = Continuous Fuel Injection
cfm = Cubic Feet Per Minute
CID = cylinder identification sensor
CID = Cubic Inch Displacement
CIS = Continuous Injection System
CKP = Crankshaft Position Sensor
CMP = Camshaft Position Sensor
CO = Carbon Monoxide
CO2 = Carbon Dioxide
COP = Coil On Plug ignition
CPI = Central Port Injection
CPU = Central Processing Unit
CSSA = Cold Start Spark Advance
CSSH = Cold Start Spark Hold
CTS = Coolant Temperature Sensor
CTVS = Choke Thermal Vacuum Switch
CVR = Control Vacuum Regulator

dB = Decibels
DC = Direct Current
DEFI = Digital Electronic Fuel Injection
DFS = Deceleration Fuel Shutoff
DIS = Distributorless Ignition System
DIS = Direct Ignition System
DLC = Data Link Connector
DOHC = Double OverHead Camshaft
DPF = Diesel Particulate Filter
DTC = Diagnostic Trouble Code
DVOM = Digital Volt Ohm Meter

E2PROM = Electrically Erasable Programmable Read Only Memory
EACV = Electronic Air Control Valve
EBCM = Electronic Brake Control Module
EBM = Electronic Body Module
ECA = Electronic Control Assembly
ECM = Engine Control Module
ECT = Engine Coolant Temperature
ECU = Electronic Control Unit
EDIS = Electronic Distributorless Ignition System
EEPROM = Electronically Erasable Programmable Read Only Memory
E2PROM = Electronically Erasable Programmable Read Only Memory
EFC = Electronic Fuel Control
EFCA = Electronic Fuel Control Assembly
EFI = Electronic Fuel Injection
EGO = Exhaust Gas Oxygen Sensor
EGR = Exhaust Gas Recirculation
EGRPS = EGR Valve Position Sensor
EGRT = EGR Temperature
EI = Electronic Ignition
EMI = Electromagnetic Interference
EMR = Electronic Module Retard
EOS = Exhaust Oxygen Sensor
EOBD = European Onboard Diagnostics
EPOS = EGR Valve Position Sensor
EPROM = Erasable Programmable Read Only Memory (chip)
ESC = Electronic Spark Control
EST = Electronic Spark Timing
EVAP = Evaporative Emission System
EVP = EGR Valve Position

F = Fahrenheit
FBC = Feedback Carburetor System
FBCA = Feedback Carburetor Actuator
FCS = Fuel Control Solenoid
FDC = Fuel Deceleration Valve
FI = Fuel Injection
FLS = Fluid Level Sensor
ft.lb. = Foot Pound
FWD = Front-Wheel Drive

GAL = Gallon
GDI = Gasoline Direct Injection
GEN = Generator
GND = Ground
GPM = Grams Per Mile
GPS = Global Positioning System
GVW = Gross Vehicle Weight

H20 = Water
HC = Hydrocarbon
HEGO = Heated Exhaust Gas Oxygen Sensor
HEI = High Energy Ignition
Hg = Mercury
HO2S = Heated Oxygen Sensor
hp = Horsepower
HT = High Tension

IAC = Idle Air Control
IAT = Intake Air Temperature
IATS = Intake Air Temperature Sensor
IC = Integrated Circuit
ICM = Ignition Control Module
ICS = Idle Control Solenoid
ID = Inside Diameter
IFI = Indirect Fuel Injection
IGN = Ignition
ISC = Idle Speed Control
ISO = International Standards Organization
ITCS = Ignition Timing Control System
ITS = Idle Tracking Switch

JAS = Jet Air System

kHz = Kilohertz
Km = Kilometres
KOEC = "Key On, Engine Cranking"
KOEO = "Key On, Engine Off"
KOER = "Key On, Engine Running"
kPa = Kilopascals
KS = Knock Sensor
KV = Kilovolts

L = Litres
lb. ft. = Pound Feet
LCD = Liquid Crystal Display
LED = Light Emitting Diode
LHD = Left-Hand Drive
LTFT = Long Term Fuel Trim
LWB = Long Wheel-Base

MAF = Mass Air Flow
MAP = Manifold Absolute Pressure
MAT = Manifold Air Temperature
MCS = Mixture Control Solenoid
MCT = Manifold Charge Temperature
MFI = Multi Port Fuel Injection
MIL = Malfunction Indicator Light
mm = Millimetres
MPFI = Multi Point Fuel Injection
MPG = Miles Per Gallon
MPH = Miles Per Hour
MPI = Multi Port Injection
MPV = Multi-Purpose Vehicle
ms = Millisecond
mV = Millivolts

Nm = Newton Metres
NOX = Oxides of Nitrogen
NVRAM = Nonvolatile Random Access Memory

O2 = Oxygen
O2S = Oxygen Sensor
OBD = Onboard Diagnostics
OBD I = Onboard Diagnostics One
OBD II = Onboard Diagnostics Two
OD = Outside Diameter
OE = Original Equipment
OEM = Original Equipment Manufacturer
OHC = OverHead Camshaft
OHV = OverHead Valve
OS = Oxygen Sensor

P/B = Power Bakes
P/N = Part Number
PA = Pressure Air
PAIR = Pulsed Secondary Air Injection
PAS = Power-Assisted Steering
PCM = Powertrain Control Module
PCV = Positive Crankcase Ventilation
PECV = Power Enrichment Control Valve
PFI = Port Fuel Injection
PID = Parameter ID
PIP = Profile ignition pickup
PNP = Park/Neutral Switch
PPM = Parts Per Million
PROM = Program Read Only Memory (chip)
PS = Power Steering
PSI = Pounds Per Square Inch
PSP = Power Steering Pressure
pt. = Pint
PTC = Pending Trouble Code
PTC = Positive temperature coefficient Additional : This is applied to the way the resistance of a thermistor varies with temperature. In this case, the resistance will increase as the temperature raises
PWR = Power to Weight Ratio

RAM = Random Access Memory
RFI = Radio Frequency Interference
RHD = Right-Hand Drive
ROM = Read Only Memory
RON = Rated Octane Number
RPM = Revolutions Per Minute
RWD = Rear-Wheel Drive

SC = Supercharged
SEFI = Sequential Electronic Fuel Injection
SES = Service Engine Soon (light)
SFI = Sequential Fuel Injection
SIPS = Side Impact Protection System
SOHC = Single Over Head Camshaft
SRS = Secondary Restraint System
SRS = Supplemental Restraint System (air bag)
SRT = System Readiness Test
SS = Speed Sensor
SSI = Solid State Ignition
STFT = Short Term Fuel Trim
SWB = Short Wheel-Base

TACH = Tachometer
TB = Throttle Body
TBI = Throttle Body Injection
TC = Turbocharged
TCC = Torque Converter Clutch
TCM = Transmission or Transaxle Control Module
TCS = Traction control solenoid (SAAB 9000)
TD = Turbo Diesel
TDC = Top Dead Center
TDI = Turbo Direct Injection (A turbo charged direct injected diesel engine)
TIV = Thermactor Idle Vacuum Valve
TKS = Throttle Kicker Solenoid
TPI = Tuned Port Injection
TPP = Throttle Position Potentiometer
TPS = Throttle Position Sensor
TPT = Throttle Position Transducer
TSP = Throttle Solenoid Positioner
TV = Throttle Valve
TVS = Thermal Vacuum Switch
TWC = Three Way Catalyst
TWC+OC = Three Way + Oxidation Catalytic Converter


V V C = Variable Valve Control
V V T = Variable Valve Timing

WOT = Wide Open Throttle

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