Acronyms And Definitions

NOTE: This acronyms and definitions listing contains technical terms applicable to Ford Motor Company products. It is not intended to be an all-inclusive dictionary of components and their functions. If a detailed description of a particular system or component is desired, refer to the applicable information within this Engine Controls article or refer to the Service Information for additional information regarding the specific vehicle being repaired.

AAT: Ambient Air Temperature

APP: Accelerator Pedal Position

A/T: Automatic Transmission

AWD: All Wheel Drive

BARO: Barometric Pressure

BPP: Brake Pedal Position

BTDC: Before Top Dead Center

CAC: Charge Air Cooler

CAN: Controller Area Network

CCM: Comprehensive Component Monitor

CF: Cooling Fan

CHT: Cylinder Head Temperature

CKP: Crankshaft Position

CL: Closed Loop

CMP: Camshaft Position

CO: Carbon Monoxide

CO₂ : Carbon Dioxide

COP: Coil On Plug

CPP: Clutch Pedal Position

CPU: Central Processing Unit

CTO: Clean Tach Output

DC: 1. Direct Current 2. Duty Cycle

DFI: Direct Fuel Injection

DFSO: Deceleration Fuel Shut Off

DLC: Data Link Connector

DTC: Diagnostic Trouble Code

E10: Fuel containing 10% ethanol

E85: Fuel containing 85% ethanol

E100: Fuel containing 100% ethanol

ECT: Engine Coolant Temperature

EEC: Electronic Engine Control

EEGR: Electric Exhaust Gas Recirculation

EEPROM: Electrically Erasable Programmable Read-Only Memory

EGR: Exhaust Gas Recirculation

EGRT: Exhaust Gas Recirculation Temperature

EI: Electronic Ignition

EMD: Engine Manufacturers Diagnostics

EMI: Electromagnetic Interference

EONV: Engine Off Natural Vacuum

EOT: Engine Oil Temperature

EP: Exhaust Pressure

EPS: Exhaust Phase Shifting

ERFS: Electronic Returnless Fuel System

ESOF: Electronic Shift-on-the-Fly

ETB: Electronic Throttle Body

ETBTACM: Electronic Throttle Body Throttle Actuator Control Motor

ETBTPS: Electronic Throttle Body Throttle Position Sensor

ETC: Electronic Throttle Control

EVAP: Evaporative Emission

EVAPCP: Evaporative Emission Canister Purge Valve

FAOS: Fore-Aft Oxygen Sensor

FEPS: Flash EEPROM Programming Signal

FFV: Flexible Fuel Vehicle

FLI: Fuel Level Input

FMEM: Failure Mode Effects Management

FP: Fuel Pump

FPDM: Fuel Pump Driver Module

FPM: Fuel Pump Monitor

FRP: Fuel Rail Pressure

FRPT: Fuel Rail Pressure Temperature

FSS: Fan Speed Sensor

FTP: Fuel Tank Pressure

FWD: Front Wheel Drive

GPM: 1. Grams per Mile 2. Gallons per Minute

GTDI: Gasoline Turbocharged Direct Injection

H: Hydrogen

HC: 1. Hydrocarbon 2. High Compression

HDR: High Data Rate

HO2S: Heated Oxygen Sensor

IAC: Idle Air Control

IAT: Intake Air Temperature

IFS: Inertia Fuel Shutoff

I/M: Inspection/Maintenance

IMRC: Intake Manifold Runner Control

IMTV: Intake Manifold Tuning Valve

IPC: Independent Plausibility Checker

IPS: Intake Phase Shifting

ISO: International Standards Organization

KAM: Keep Alive Memory

KOEO: Key On Engine Off

KOER: Key On Engine Running

KS: Knock Sensor

LDR: Low Data Rate

LONGFT: Long-Term Fuel Trim

MAF: Mass Airflow

MAP: Manifold Absolute Pressure

MAP/IAT2: Manifold Absolute Pressure/Intake Air Temperature 2

MFF: Misfire Freeze Frame

MIL: Malfunction Indicator Lamp

MRFS: Mechanical Returnless Fuel System

MSOF: Manual Shift-on-the-Fly

M/T: Manual Transmission

NO _X : Nitrogen Oxides

NVM: Non-Volatile Memory

NVRAM: Non-Volatile Random Access Memory

OASIS: On-line Automotive Service Information System

OBD: On Board Diagnostic

OL: Open Loop

ORVR: On Board Refueling Vapor Recovery

OSC: Output State Control

OSR: On Board System Readiness

OSS: Output Shaft Speed

PATS: Passive Anti-Theft System

PCM: Powertrain Control Module

PCV: Positive Crankcase Ventilation

Pd: Palladium

PID: Parameter Identification

PIP: Profile Ignition Pickup

PPM: Parts per Million

PSP: Power Steering Pressure

Pt: Platinum

PTS: Professional Technician Society

PWM: Pulse Width Modulation

PZEV: Partial Zero Emission Vehicle

RAM: Random Access Memory

Rh: Rhodium

ROM: Read-Only Memory

RPM: Revolutions Per Minute

RWD: Rear Wheel Drive

SAE: Society of Automotive Engineers

SFI: Sequential Multiport Fuel Injection

SHRTFT: Short-Term Fuel Trim

TAC: Throttle Actuator Control

TACM: Throttle Actuator Control Motor

TC: Turbocharger

TCBP/CACT: Turbocharger Boost Pressure/Charge Air Cooler Temperature

TCBY: Turbocharger Bypass

TCIPT: Turbocharger Intake Pressure And Temperature

TCM: Transmission Control Module

TCS: Transmission Control Switch

TDC: Top Dead Center

TIVCT: Twin Independent Variable Camshaft Timing

TP: Throttle Position

TPPC: Throttle Plate Position Controller

TR: Transmission Range

TSB: Technical Service Bulletin

TWC: Three Way Catalytic Converter

VCT: Variable Camshaft Timing

VECI: Vehicle Emission Control Information

VID: Vehicle Identification

VIN: Vehicle Identification Number

VR: Variable Reluctance

VSS: Vehicle Speed Sensor

WOT: Wide Open Throttle