HWFET - Highway Fuel Economy Test (driving schedule)
HYPAS - Hydraulic Power Assisted Steering
Hz - Hertz
IA - Intake Air
IABM - Integrated AirBag Module
IAC - Idle Air Control
IAFM - Integrated Air Fuel Module
IAFS - Integrated Air Fuel System
IAT - Intake Air Temperature
iATN - International Automotive Technicians Network
IBOB - Intelligent BreakOut Box
IC - Ignition Control
IC - Integrated Circuit
ICA - Injector Cam Actuation
ICC - Intelligent Cruise Control
ICCS - Integrated Chassis Control System
ICDX - Integrated Compact Disc Changer
ICE - Internal Combustion Engine
ICM - Ignition Control Module
ICP - Injection Control Pressure
ICS - Integrated Chassis System
ICWS - Intersection Collision Warning System
ID - Identification
ID - Inside Diameter
IDI - Integrated Direct Ignition
IDIS - International Dismantling Information System
IDM - Ignition Diagnostic Module
IDM - Injector Driver Module
IEDIS - Integrated Electronic Distributorless Ignition System
IFES - Integrated Front End System
IFI - Indirect Diesel Injection
IFS - Inertia Fuel Shutoff
IFSM - Integrated Fuel System Module
IGN - Ignition
ILC - Idle Load Compensator
illum - Illumination
I/M - Inspection Maintenance
IMA - Integrated Motor Assist
IMDX - Integrated Mini Disc Changer
IMLUT - Inspection/Maintenance Look-Up Table
immo - Immobilizer
IMRC - Intake Manifold Runner Control
IMS - Inductive Magnetic Saturation
IMS - Instant Mobility System
IMT - Intake Manifold Tuning
IMTD - Intake Manifold Temperature Differential
in - Inch(es)
inadv - Inadvertant
inc - Increment
INCA - In-Car Aquisition
incand - Incandescent
infl - Inflatable
init - Initial
INJ - Injector
INP - Input
inst - Instant
int - Interior
INT - Integrator (replaced with ST FUEL TRIM)
I/O - In/Out
IOC - Instant Oil Change
I/P - Instrument Panel
IPC - Instrument Panel Cluster
IPM - Instrument Panel Module
IPM - Integrated Power Module
IPR - Injector Pressure Regulator
IRDS - Independant Rear Drive Suspension
IRQ - Interrupt Request
ISA - Integrated Starter-Alternator
ISAD - Integrated Starter Alternator Damper
ISB - Interact System B
ISC - Idle Speed Control
ISG - Integrated Starter-Generator
ISI - Ion Sensing Ignition
ISO - Interior Systems Optimization
ISO - International Standards Organization
iso - Isolation
ISS - Input Shaft Speed
ITARDA - Institute for Traffic Acccident Research and Data Analysis
ITTB - Idle Time To Boil
ITTR - Inflatable Tubular Torso Restraint
ITS - Idle Tracking Switch
IVC - Integral Vapour Canister
IVCS - Integrated Vehicle Control System
IVI - Intelligent Vehicle Initiative
IVIS - In Vehicle Information System
IVS - Idle Validation Switch
IVSC - Integrated Vehicle Speed Control
IWC - Inertia Weight Class
JARI - Japan Automotive Research Institute
JTEC - Jeep, Truck Engine Control
JTEC - Joint Transmission-Engine Controller
KAM - Keep Alive Memory
KAPWR - Keep Alive power
KDD - Keyboard Display Driver
kg - Kilogram
kg/h - Kilograms per Hour
kHz - Kilohertz
km - Kilometer
km/h - Kilometers per Hour
km/l - Kilometers per Litre
KOEO - Key On Engine Off
KOER - Key On Engine Running
kPa - Kilopascal
KS - Knock Sensor
kV - Kilovolts
L - Liter(s)
L4 - Four Cylinder Inline Engine
LATCH - Lower Anchors and Tethers for CHildren
LB - Long Box, Long Bed
LCD - Liquid Crystal Display
LCM - Lighting Control Module
LDCL - Left Door Close Locking
LDCM - Left Door Control Module
LDDT - Light Duty Diesel Truck
LDGT - Light Duty Gasoline (fueled) Truck
LDP - Leak Detection Pump
lduty - Light Duty
LEADER - Low Emissions Advanced Engine Range
LED - Light Emitting Diode
LEP - Light Emitting Polymer
LF - Left Front
LFC - Lamp Fault Code
LFC - Low Fan Control
LFWS - Left Front Wheel Speed
LFCS - Low Flow Cooling System
LFP - Low Fuel pump
LGM - Lift Gate Module
LH - Left Hand
LIE - Laterally Inclined Engine
LMD - Left Mid Door
LNG - Liquid Natural Gas
LO - Low
LOMA - Lifter Oil Manifold Assembly
LOS - Limited Operation Strategy
LPG - Liquified Petroleum Gas
LPM - Litres Per Minute
LPS - Low Pressure Sensor
LR - Left Rear
LR - Loaded Radius
LRA - Latching Rocker Arm
LRD - Left Rear Door
lrn - Learn
LSD - Limited Slip Differential
LSEGR - Linear Solenoid Exhaust Gas Recirculation
LSP and BV - Load Sensing Proportioning and Bypass Valve
LSUV - Luxury Sport Utility Vehicle
LT - Left
LT - Long Term (Fuel Trim)
LTA - Low Temperature Aftercooling
LTD - Long-Travel Dampened (clutch)
LTPWS - Low Tire Pressure Warning System
LUS Lock-Up Solenoid (see TCC)
LV8 - Load Variable 8 Cylinder
LVDT - Linear Variable Differential Transducer
LVL - Level
LWB - Long WheelBase (see LB)
MAF - Mass Air Flow
malf - Malfunction
MALL - Multifunction Alarm Lighting and Locking
MAN - Manufacturer
MAP - Manifold Absolute Pressure
MAT - Manifold Air Temperature
MC - Measuring Core
MC - Mixture Control
MCM - Message Center Module
MCU - Microprocessor Control Unit
MD - Mini Disc
MD - Modulated Displacement
MDP - Manifold Differential Pressure
MDS(2) - Mopar Diagnostic System
MDX - Mini Disc Changer
MECS - Mazda Electronic Control System
med - Medium
MEM - Memory
MEMCAL - Memory Calibration
MFI - Multiport Fuel Injection
MGMT - Management
MIC - Mechanical Instrument Cluster
MID - Midrange
MIL - Malfunction Indicator Lamp
MIN - Minute(s)
MIN - Mobile Identification Number
MIP - Mixer Inlet Pressure
ML - Manual Longitudinal
MLP(s) - Manual Lever Position (sensor)
mm - Millimetre
mm3 - Cubic Millimetre(s)
MMC - Manifold Mounted Converter
MMT - Methylcyclopentadienyl Manganese Tricarbonyl
MPa - Megapascal
MPFI - Multiport Fuel Injection
ms - Millisecond
MSFF - Miles Since First Fail
MSLF - Miles Since Last Fail
MSO - Mixed Signal Oscilloscope
MST - Manifold Surface Temperature
MTBE - Methyl Tertiary Butyl Ether
MTV - Manifold Tuning Valve
MV - Megavolt
mV - Millivolt
MVLPS - Manual Valve Lever Position Sensor
MVSA - Motor Vehicle Safety Act
MVSS - Motor Vehicle Safety Standards
NAAO - North American Automotive Operations
NAICC - Navigation-Aided Intelligent Cruise Control
NC - Normally Closed
NCAP - New Car Assessment Program
NEG - Negative
NFF - No Fault Found
NG - Natural Gas
NGS - New Generation STAR (Self Test Automatic Readout)
NGSC - Next Generation Speed Control
NGV - Natural Gas Vehicle
NGV - New Generation Vehicle
NGVM - Natural Gas Vehicle Module
NHTSA - National Highway Traffic Safety Administration
NLGI - National Lubricating Grease Institute
N-m - Newton Meters
NO - Normally Open
NOx - Nitrogen Oxides
NPTC - National Pipe Thread Coarse
NPTF - National Pipe Thread Fine
NVH - Noise, Vibration and Harshness
NVLD - Natural Vacuum Leak Detection
NVRAM - Non Volatile Random Access Memory
NYCC - New York City Cycle
O2 - Oxygen
O2S - Oxygen Sensor
OBD - On Board Diagnostics
OBD II - On Board Diagnostics, Generation 2
OC - Oxidation Catalyst Only
OCC - Output Circuit Check
OCR - Oil Control Ring
OD - Outside Diameter
OD - Overdrive
OE - Original Equipment
OEM - Original Equipment Manufacturer
OHC - Overhead Camshaft
OL - Open Loop
OLED - Organic Light Emitting Diode
OPR - Over Pressure Relief
ORC - Oxidation Reduction Converter
OSC - Output State Check
OSC - Output State Control
OSGI - Open-Service Gateway Interface
OSS - Output Shaft Speed (sensor)
OTC - Overhead Trip Computer
OTIS - Overhead Travel Information System
PAB - Passenger Air Bag
PADS - Passenger Airbag Disarm Switch
PAG - Polyalkylene Glycol
PAG - (Ford) Premier Automotive Group
PAIR - Pulsed Secondary Air Injection
PASE - PAssive Start and Entry system
PASM - Porche Active Steering Management
PASS - Personalized Automotive Security System
PATS - Passive Anti-Theft System
PCB - Printed Circuit Board
PCM - Powertrain Control Module
PCI - Programmable Communications Interface
PCI - Programmable Controller Interface
PCS - Pre-Crash Sensor
PCS - Pressure Control Solenoid
PCV - Positive Crankcase Ventilation
PDC - Park Distance Control
PDC - Parts Distribution Center
PDC - Power Distribution Center
PEM - Proton Electric Membrane
PEMFC - Proton Exchange Membrane Fuel Cell
PEP - Peripheral Expansion Port
PFE - Pressure Feedback EGR
PFI - Port Fuel Injection
PID - Parameter Identification
PIP - Profile Ignition Pickup (replaced with CKP)
PKE - Passive Keyless Entry
PM - Permanent Magnet
PMD - Pump Mounted Driver
P/N - Part Number
PNP - Park/Neutral Position
POA - Pilot Operated Absolute
POS - Positive
POT - Potentiometer
ppm - Parts Per Million
PPS - Passenger Presence Sensor
PROM - Programmable Read Only Memory
PROX - PReferential OXidation
PS - Power Steering
PSA - Pressure Switch Assembly
PSD - Power Sliding Door
psi - Pounds Per Square Inch
PSIR - Passenger Side Inflatable Restraint
PSM - Passenger Seat Module
PSOM - Programmable Speedometer/Odometer Module
PSP - Power Steering Pressure
PSV - Public Service Vehicle
PTC - Pending Trouble Code
PTC - Positive Temperature Coefficient
PTO - Power Takeoff
PTOX - Periodic Trap Oxidizer
PTU - Part Throttle Unlock
PWM - Pulse Width Modulation
PWR - Power
PZEV - Partial Zero Emision Vehicle
QDM - Quad Driver Module
QDR - Quality, Durability, Reliability
QVM - Qualified Vehicle Modifier
RABS - Rear Antilock Brake System
RAM - Random Access Memory
RAM - Ride Air Module
RAP - Remote Anti-theft Module
RAP - Retained Access Power
RBC - Rotary Blade Coupling
RCC - Remote Climate Control
RDS - Radio (broadcast) Data System
RECIS - Remote Entry Control and Immobilizer System
REDOX - Reduction Oxidation Catalytic Converter
REEGR - Rotary Electric EGR
REF - Reference
RESC - Remote Emergency Satellite Unit
RF - Radio Frequency
RFF - Roller Finger Followers
RFI - Radio Frequency Interference
RKE - Remote Keyless Entry
RM - Relay Module
ROM - Read Only Memory
RPM - Remote Power Module
RPM - Revolutions Per Minute
RPO - Regular Production Option
RTD - Real Time Dampening
RTN - Return
RTV - Room Temperature Vulcanizing
RVP - Reid Vapour Pressure
RWAL - Rear Wheel Anti-lock
RWD - Rear Wheel Drive