F 150 2WD Lightning V8-5.4L SOHC SC VIN 3 (2001)
Positive Crankcase Ventilation: Description and Operation
Acronyms and Definitions
2V - L
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
Vehicle System for the specific vehicle being serviced.
2V: Two Valve engine configuration.
4V: Four Valve engine configuration.
ABS: Anti-lock Brake System.
A/C: Air Conditioning. A vehicle accessory system that modifies the passenger compartment air by cooling and dehydrating the air.
ACC: Air Conditioning Clutch. Indicates status of the A/C clutch.
ACCS: Air Conditioning Cycling Switch. Indicates status of the A/C cycling switch.
ACD: Air Conditioning Demand. A signal input to the PCM from the Air Conditioning control panel.
ACP: Air Conditioning Head Pressure or A/C cycling switch input state.
ACPSW: Air Conditioning Pressure Switch.
ACPV: Air Conditioning Head Pressure Volts. A voltage input to the Powertrain Control Module (PCM) from the ACP switch or sensor.
ACR: Air Conditioning Relay. Commanded output controlled by the PCM and acts as an A/C cutout control during heavy acceleration.
A/D: Analog-to-Digital. Analog-to-Digital signal conversion.
ADC: See ATDC.
AFCM: Alternative Fuel Control Module.
AIR: Secondary Air Injection.
AIRB: Secondary Air Injection Bypass.
Air Diverter: Air Diverter Valve. Part of the EAIR system. Diverts fresh air to the exhaust system when the electric air pump is commanded on.
AIR EVAL: Air System Evaluated. Displays a YES or NO status indicating whether the Air System has been evaluated for OBD (On-Board
Diagnostic) II purposes.
Air/Fuel Ratio: Air to fuel mixture ratio. An air/fuel mixture that is 14.7:1 is also called stoichiometry.
AIRM: Secondary AIR pump monitor.
Ambient Air Temperature: Temperature of the air surrounding an object.
Analog (Electrical/Electronic): An electrical signal that can obtain any value within the voltage limits of the signal.
ARB: Air Resource Board.
ARPMIDES: Ancillary RPM Desired. RPM required to maintain the vehicle speed commanded by Speed Control Command Switch (SCCS) inputs.
ASCII: American Standard Code for Information Interchange.
ATDC: After Top Dead Center. The location of the piston after it has reached the top of its stroke. Measured in degrees of crankshaft rotation.
AVOM: Analog Volt-Ohm Multimeter. Readings are indicated by a sweep hand on a printed scale, rather than a digital display.
