F

FAILURE MODE EFFECTS MANAGEMENT (FMEM) STRATEGY - EEC IV strategy designed to reduce the adverse effects that may be caused by an EEC system sensor failure. Should a sensor fail, the ECA substitutes a good sensor signal in its place. This allows the engine to keep running so that the vehicle can be driven to the shop for service.

FIELD (A/C) - A coil with many turns of wire located behind the clutch rotor. Current passing through this coil sets up a magnetic field and causes the clutch to engage.

FIELD - Magnetic lines of force orientated from north to south as in a magnetic field. A magnetic field may be natural as with a permanent magnet or created when electricity flows in a wire.

FIELD COIL - A coil of insulated wire usually wound around an iron core. Current flowing in the coil produces a magnetic field. Also called "field winding."

FILAMENT - A resistance in a light bulb which glows and produces light when a current is forced through it.

FIRING LINE:

FIRING LINE - The total amount of voltage being expended through the secondary circuit.

FLUX - Electric or magnetic lines of force passing or flowing in a magnetic field. Also, material used to cause joining metal to adhere to both parts to be joined.

FOUR-WAY FLASHERS - See "hazard warning system."

FREE ELECTRON - Electrons that are not bound to a certain atom but are free to move around from atom to atom.

FREQUENCY - Refers to the number of times something repeats itself (such as a signal from a sensor) in one second.

FUEL PUMP MONITOR (FPM) - Input used to monitor the fuel pump secondary circuit.

FUEL PUMP RELAY (FP) - Relay or its control line. Relay is controlled by ECA processor. Supplies power to electric fuel pump of EFI/CFI system.

FUSE - A metal link in a circuit that melts when the current flow is excessive, thereby breaking the circuit.


FUSE BLOCK - An assembly concentrating most or all of a car's fuses at one point.


FUSIBLE LINK - A wire or bar designed to melt if more than a certain amount of electrical current is transmitted through it. Often used as a main fuse or backup fuse for large sectional portions of a car's electrical system.