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 appropriate component or system in Computers and Control Systems for the specific vehicle being serviced.

AFCM - Alternative Fuel Control Module.

Bus + or Bus - - Multiplex circuits that carry SCP data from module to module to the DLC.

CONT - Continuous Memory. The portion of KAM (keep alive memory) used to store DTCs generated during Continuous Memory Self-Test.

DLC - Data Link Connector. J1962 connector providing access to vehicle diagnostic information.

DTC - Diagnostic Trouble Code. An alpha/numeric identifier for a fault condition identified by the On-Board Diagnostic System.

KOEO - Key On Engine Off.

KOER - Key On Engine Running.

LPG - Liquefied Petroleum Gas.

MIL - Malfunction Indicator Lamp. An indicator lamp alerting the driver of an emission related malfunction. May also read "CHECK ENGINE" or "SERVICE ENGINE SOON."

OBD - On-board Diagnostics.

PCM - Powertrain Control Module.

PID - Parameter Identifier. Identifies an address in PCM memory that contains operating information.

PSIA - Pressure-Absolute. A pressure reference to a perfect vacuum.

PSIG - Pressure-Gauge. The amount by which absolute pressure exceeds the ambient atmospheric pressure.

SCP - Standard Corporate Protocol.