Ford 6.0L POWER STROKE Service Procedures And General Diagnostics Download

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Glow Plug Sleeves

Stainless steel sleeves used to protect the glow plugs from
coolant.

GPCM Glow Plug Control Module

Module which supplies power to the glow plugs and identifies
variation in current flow to the glow plugs.

IAT Intake Air Temperature Sensor

A thermistor style sensor used to indicate air temperature
before the charge air cooler.

ICP Injection Control Pressure

A variable capacitance style sensor used to indicate high
pressure oil system pressure.

IAT2 Intake Air Temperature 2 Sensor

A thermistor style sensor used to indicate air temperature
after passing through the charge air cooler.

IDM Injector Driver Module

An electronic unit which has the primary function of an
electronic distributor for the injectors. It also is the power
supply for the injectors.

Impedance

A form of opposition to AC current flow measured in Ohms.

I/O Injector Test

A test that can be performed using the WDS to disable one
injector at a time while watching Mfdes to determine a weak
contributing injector.

IPR Injection Pressure Regulator

Controls injection oil pressure. An electrical signal to a
solenoid creates a magnetic field which applies a variable
force on a poppet to control pressure. The quantity of fuel
delivered to the combustion chamber is proportional to injec-
tion control pressure.

IVS Idle Validation Switch

An on/off switch that indicates when the accelerator pedal is
in the idle position.

KOEO Key on Engine Off Test

A self-test operation that is performed with the ignition switch
in the ON position with the engine OFF.

KOER Key on Engine Running Test

A self-test operation that is performed with the ignition switch
in the ON position and the engine RUNNING.

Long Life Ethylene Glycol Coolant

A premium coolant, with an Ethylene Glycol base, that can be
used in a cooling system for an extended time without need-
ing to be changed. Long life coolants do not require the use
of extenders. Long life coolants can be identified by its yellow
color.

Main Power Relays

(Two) Battery power relay switches for the ECM and IDM
(modules) that are key power initiated and controlled by the
corresponding powered module.

MAP Manifold Absolute Pressure

A MAP sensor generates a digital frequency that indicates
manifold boost pressure above atmospheric pressure. The
signal is created by switching action caused by manifold
pressure of a diaphragm connected to a capacitor circuit in
the sensor. The digital frequency increases as pressure
increases. A MAP sensor has three connection: signal
return(gnd), MAP signal, and Vref.

Misfire Detection

Uses engine RPM changes during a firing cycle to determine
a low contributing cylinder.

Modular Water Pump

Is a water pump that uses the front cover as a housing and
only the hub and impeller are replaceable.

Normally Closed

Refers to a switch or a solenoid that is closed when no con-
trol or force is acting on it.

Normally Open

Refers to a switch or a solenoid that is open when no control
or force is acting on it.

POT Potentiometer

Converts a mechanical motion to a voltage value. Most often
used to sense the position of a component. This sensor
works as a variable voltage divider. The wiper arm is
mechanically connected to the component desired to be
sensed. Potentiometers have three connections: Vref, signal
out, and ground.

Pulse Width

The length of time an actuator, such as an injector, remains
energized.

Relative Compression Test

A test that can be run with the WDS to measure compression
of a cylinder relative to the other cylinders in the engine. This
test is accomplished by comparing the rpm of the engine
during each compression stroke.

G L O S S A R Y