Glossary “adaptive memory” Definition:
The feature of a computer memory that allows the microprocessor to automatically compensate for changes in the dynamics of the process being controlled. Anything stored in adaptive memory is lost when power to the computer is interrupted, such as when the battery is disconnected.
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adaptive strategy
Glossary “adaptive strategy” Definition:
The ability of the PCM to adapt to hardware, aging and other variables. Also permits the PCM to substitute learned values for a failed sensor in FMEM. Used for fuel system, idle air control and transmission adjustments.
AD
Glossary “AD” Definition:
Air Diverter
adapter
Glossary “adapter” Definition:
1). Any of various pieces of hardware that permits non-matching parts to connect, mesh, or function together. 2). A device used to connect an engine and a transmission not originally designed to be used together.
adaptive fuel monitor
Glossary “adaptive fuel monitor” Definition:
OBD II required monitor to flag adaptive fuel adjustments that may cause emissions to exceed California ARB limits.
adaptive fuel trim
Glossary “adaptive fuel trim” Definition:
Allows the fuel system to operate at the correct A/F. Systems has learned or adapted the both the driver’s and engine’s needs.
ACV
Glossary “ACV” Definition:
Acronym for Air-Control Valve, or Actual Cash Value.
ACVD
Glossary “ACVD” Definition:
Air Cleaner Vacuum Diaphragm
active testing
Glossary “active testing” Definition:
OBD-II Diagnostic testing in which the PCM controls the system or component in a specific action while monitoring takes place. May also be referred to as Active Commands.
ACTS
Glossary “ACTS” Definition:
Air Charge Temperature Sensor
Actual Cash Value (ACV)
Glossary “Actual Cash Value (ACV)” Definition:
The true value of a product, such as a used vehicle, wholesale price.
actual throat
Glossary “actual throat” Definition:
A welding term indication the shortest distance between the weld root and the face of a fillet weld.
actuator
Glossary “actuator” Definition:
1).Any device that receives an output signal or command from a computer and does something in response to the signal. 2). A device that translates hydraulic pressure into mechanical force or movement.
actuator cable
Glossary “actuator cable” Definition:
Cable that is responsible for transferring movement of the speed control vacuum diaphragm in the servo to the throttle plates.
Acura
Glossary “Acura” Definition:
All Cars Usually Require Adjustment
active suspension system
Glossary “active suspension system” Definition:
Also known as computer-controlled suspension system, able to control body roll, body pitch, brake dive, acceleration squall, and ride height. Suspension systems that are controlled by double-acting hydraulic cylinders or solenoids (actuators) mounted at each wheel. The actuators support the vehicles weight, instead of conventional springs or air springs.
active sensor
Glossary “active sensor” Definition:
Those sensors that generate their own signal, like a VRS.
active solvent
Glossary “active solvent” Definition:
Liquid that can dissolve a paint binder when used alone.
active spring coil
Glossary “active spring coil” Definition:
Active coils in the center of the spring operate during the complete range of spring loading. Also, see inactive spring coil and transitional spring coil.
ACSE
Glossary “ACSE” Definition:
Acronym for the Automotive Cooling System Institute.