User Manual

SENR9977 31
Systems Operation Section
Supply Voltage – Supply voltage is a constant
voltage that is
supplied to a component in order to
provide electrical power for operation. Supply voltage
may be generated by the ECM. Supply voltage may
also be the bat
tery voltage of the vehicle that is
supplied by the vehicle wiring.
“T” Harness –
This harness is a test harness that
is designed to permit normal circuit operation and
the measurement of the voltage simultaneously.
Typically, t
he harness is inserted between the two
ends of a connector.
Throttle Pos
ition – The Throttle position is sent
from the accelerator pedal. This signal is interpreted
by the ECM. The throttle position may be used as
part of a pow
er take-off control.
Total Tattletale – The total tattletale is the total
number of ch
anges to all system parameters.